|
|
|
|
益阳市2007年上半年林业有害生物发生防治情况及下半年发生趋势预测
| 作者： 发布时间：2007-10-10 11:18:46 阅读次数：1770 来源： |
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 28.5pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 黑体; mso-ascii-font-family: 'Times New Roman'">一、</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 黑体">2007</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 黑体; mso-ascii-font-family: 'Times New Roman'">上半年林业有害生物发生情况</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 黑体"><?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 30pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly; mso-char-indent-count: 2.0; mso-char-indent-size: 15.0pt"><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">2007</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">年上半年我市主要林业有害生物发生面积</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">50.84</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩，另有低虫口感染面积</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">38.7</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩。与去年同比发生面积上升</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">13.7%</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">；病害发生面积</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">1.56</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩，比虫上年同比上升</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">2%</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">（去年同期未统计松褐天牛、松食叶害虫发生情况）。有害生物总发生面积中虫害发生面积</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">45.08</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">,</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">病害发生</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">1.56</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">,</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">鼠害发生面积</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">4.2</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">,</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">无林业有害生物无成灾面积。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"> <o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 30pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly; mso-char-indent-count: 2.0; mso-char-indent-size: 15.0pt"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-ascii-font-family: 'Times New Roman'">（一）有害生物发生的主要特点</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 楷体_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 30pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly; mso-char-indent-count: 2.0; mso-char-indent-size: 15.0pt"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">一是杨树食叶害虫呈上升趋势，发展势态迅猛。以杨小舟蛾为主的杨树食叶害虫在第二代呈现突发态势，</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">5</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">月</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">26-28</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">日，我市大通湖区、南县、沅江市以湖南天运公司在大通湖辖区内的南湾湖军垦农场杨树林为中心，暴发第二代杨小舟蛾危害，涉及面积</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">12</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万余亩，虫口密度多的达到每株</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">800</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">余条，造成轻中度危害</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">7.6</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万余亩。根据近年观察，杨树食叶害虫的突发性和虫口数与造林密度有一定关系。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 30pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly; mso-char-indent-count: 2.0; mso-char-indent-size: 15.0pt"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">二是蛀干害虫以对带林、片林边缘及优势木危害为主，面积继续扩大。桑天牛、云斑天牛、松褐天牛是我市杨树、松树主要蛀干害虫，在调查中发现以在带状林（堤、渠、路、宅）、片林林缘及片林优势木危害较重，这其中与天牛成虫生活习性的关系及利用这一习性作防治，值得作进一步研究。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"> <o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 30pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly; mso-char-indent-count: 2.0; mso-char-indent-size: 15.0pt"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">三是鼠类的危害与当年湖洲造林面积成正比关系。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">2007</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">年度我市杨树新造林只有</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">30</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩左右，其中在湖洲造林的只有</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">2</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万多亩，且以补植和在林地周边扩散种植苏柳为主，整体上对鼠类食物来源没有造成很大破坏，故今年鼠害发生明显较以往三个年度轻。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 28pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-ascii-font-family: 'Times New Roman'">（二）林业有害生物发生情况</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 楷体_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 30pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly; mso-char-indent-count: 2.0; mso-char-indent-size: 15.0pt"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">益阳市林业有害生物发生主要种类是：杨小舟蛾、杨扇舟蛾、云斑天牛、桑天牛、黄脊竹蝗、马尾松毛虫、松褐天牛、松材线虫病、杨树溃疡病等。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 楷体_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 28.5pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly"><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"><SPAN style="mso-spacerun: yes"> </SPAN>1</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">、食叶害虫</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"><SPAN style="mso-spacerun: yes"> </SPAN><o:p></o:p></SPAN></B></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 28.5pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">杨小舟蛾、杨扇舟蛾：以大通湖区、南县、沅江市北部垸内为主，中心地带在湖南天运公司的南湾湖基地，共发生总面积</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">8.25</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩，其轻度危害面积</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">4.59</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩，中度危害面积</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">3.66</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩，较去年同期</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">6.56</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩增长</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">25.76%</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 28.5pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">马尾松毛虫、思茅松毛虫：以安化县为主，全市今年共发生马尾松毛虫、思茅松毛虫</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">2.99</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩，均轻度危害。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 28.5pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">黄脊竹蝗：据</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">6</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">月</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">18</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">日统计，以桃江县、安化县、赫山区三地为主共发生</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">3.48</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩，其中轻度</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">2.17</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩，中度</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">0.81</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩，重度</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">0.5</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩，较去年同期</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">2.83</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩，增长</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">22.8%</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 28.5pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly"><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">2</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">、蛀干害虫</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"><o:p></o:p></SPAN></B></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 28.5pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">云斑天牛、桑天牛：主要危害杨树，全市发生</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">23.7</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩，全市各区县均有发生，主要集中在南县、沅江市、大通湖区、资阳区和赫山区。较去年发生</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">25</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩有所下降。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 28.5pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">松褐天牛：主要集中在松树较多的安化县，桃江县、赫山区和资阳区有分布，全市共发生</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">6.66</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩，</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 28.5pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly"><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">3</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">、病害</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"><SPAN style="mso-spacerun: yes"> </SPAN><o:p></o:p></SPAN></B></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 28.5pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">杨树溃疡病：共发生</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">0.6</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">,</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">集中在资阳区、南县、沅江市、赫山区，较去年下降。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 28.5pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly"><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">4</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">、鼠害</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"><SPAN style="mso-spacerun: yes"> </SPAN><o:p></o:p></SPAN></B></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 28.5pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">东方田鼠：发生</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">4.2</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩，其中沅江市</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">3</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩、资阳区</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">0.5</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">,</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">南县</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">(</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">含大通湖区</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">)0.7</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩，整体上呈逐年下降，较去年</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">5.3</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩下降</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">20.75%</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">，较</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">2005</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">年度</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">6.5</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩降</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">35.38%</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 28pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-ascii-font-family: 'Times New Roman'">（三）发生增减原因分析</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 楷体_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 26.1pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly; mso-char-indent-count: 1.74; mso-char-indent-size: 15.0pt"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">一是杨树食叶害虫呈增长趋势主要是前三年营造的杨树逐渐郁闭，透光性减小有利于虫口迁移，同时为食叶害虫提供了充足的食物来源；另外，近年对叶面害虫的防治以化学药物为主，杀死害虫的同时消灭卫敌，长期使用化学农药，也使虫体产生抗药性，加之防治不彻底，上一代留下了较大虫口基数，致使暴发形成可能。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 26.1pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly; mso-char-indent-count: 1.74; mso-char-indent-size: 15.0pt"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">二是松树食叶害虫呈上升趋势主要是因前两年虫口密度小，疏于了防治，积累了一定虫口基数。松蛀干害虫松褐天牛，近年以来未作防治，全靠天敌控制，发生面积也呈上升态势。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 26.1pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly; mso-char-indent-count: 1.74; mso-char-indent-size: 15.0pt"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">三是杨树蛀干害虫发生面积与去年基本持平，面积在不断扩大而虫害发生面积没有扩大主要得益于两个方面，一是通过近年每年造林前大面积扫障，清除了大量虫源媒介树；二是在防治中造林业主高度重视了蛀干害虫对杨树材质的不良影响，防治措施得以加强和创新。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 26.1pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly; mso-char-indent-count: 1.74; mso-char-indent-size: 15.0pt"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">四是鼠害呈逐年下降主要是社会对湖洲造林影响湿地生态的呼声越来越高，近两年我市在湖洲造林的现象越来越少，在未破坏鼠类食物来源植物结构的情况下，鼠类对林木的破坏力也并不大。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 26.1pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly; mso-char-indent-count: 1.74; mso-char-indent-size: 15.0pt"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">五是自然和气候条件的变化是引起有害生物发生呈上升趋势的外在因素，洞庭湖湿地冬季枯水时间延长、夏季汛期水位下降且丰水不足，冬季气温变暖等都直接影响林业有害生物的发生。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 26.1pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly; mso-char-indent-count: 1.74; mso-char-indent-size: 15.0pt"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">六是部分经营者管理粗放，尤其是零星四旁的林木，由于经营者缺乏技术或是防治不及时致使疫情扩散和发生较为严重的危害。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoBodyTextIndent style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 30pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly; mso-char-indent-count: 2.0; mso-char-indent-size: 15.0pt"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 黑体; mso-ascii-font-family: 'Times New Roman'">二、上半年林业有害生物防治情况</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 黑体"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 30pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly; mso-char-indent-count: 2.0; mso-char-indent-size: 15.0pt"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312">我市对林业有害生物的防治十分重视，尤其是对杨树有害生物的防治，各级政府都将其作为了阶段时期的重要内容。省厅森防总站对我市林业有害生物的防治也极为关注和支持。上半年我市虽然有害生物发生面积大，但没有一处形成灾害性损失，这与沅江市、桃江县、安化县三个国家级森林病虫害中心测报站在林业有害生物预测预报和防治指导上发挥的作用密不可分。我市的测报工做到了准确率在<SPAN lang=EN-US>95%以上，每次虫情都保证了提前一个星期到10天发布预告。特别是沅江市国家级森林病虫害中心测报站将每期虫情预报情况向益阳各区县（市）林业局、全市各大杨树造林户、益阳和沅江市委市政府主要领导及其辖区的各乡镇报送，对各级党委、政府和林业部门及造林业主及时组织防治起到了指导作用。5月18日，该测报中心报送的第二期虫情通报，测报5月26日起，第二代杨小舟蛾将在我市大通湖垸内大面积暴发，湖南天运公司依此预报从5月30日起至6月4日，实施近150多架次飞防和喷烟喷雾结合，将近7万亩杨小舟蛾扼杀在2-3龄最佳防治期。上半年，我市各林业有害生物防治情况是：</SPAN></SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 楷体_GB2312"><SPAN style="mso-spacerun: yes"> </SPAN></SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoBodyTextIndent style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 15.05pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly; mso-char-indent-count: 1.0; mso-char-indent-size: 15.05pt"><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312">(一)食叶害虫<SPAN style="mso-spacerun: yes"> </SPAN><o:p></o:p></SPAN></B></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 28.5pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">杨小舟蛾、杨扇舟蛾：防治面积合计</SPAN><SPAN style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"> <SPAN lang=EN-US>7.98</SPAN></SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩，防治率</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">96.73%</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">其中飞防</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">5.4</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩，喷雾、烟雾剂防治</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">2.58</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">;</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">使用化学制剂防治防治</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">7.66</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">,</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">细菌、寄生蜂和仿生制剂防治</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">0.32</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 28.5pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">马尾松毛虫、思茅松毛虫：未作防治。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 28.5pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">黄脊竹蝗：防治面积</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">2.855</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">,</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">防治率</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">82.16%,</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">其中仿生防治</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">1.005</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">,</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">化学防治</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">1.85</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 28.5pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly"><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">(</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">二</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">)</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">蛀干害虫</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"><o:p></o:p></SPAN></B></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 28.5pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">云斑天牛、桑天牛：防治面积</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">18.77</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">,</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">防治率</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">79.2%,</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">其中化学防治</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">12.27</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">,</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">人工防治</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">6.5</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 28.5pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">松褐天牛：未作防治，</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 28.5pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly"><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">(</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">三</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">)</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">病害</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"><SPAN style="mso-spacerun: yes"> </SPAN><o:p></o:p></SPAN></B></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 28.5pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">杨树溃疡病：共防治</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">0.6</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">,</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">防治率</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">100%</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 28.5pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly"><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">(</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">四</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">)</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">鼠害</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"><SPAN style="mso-spacerun: yes"> </SPAN><o:p></o:p></SPAN></B></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 28.5pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">东方田鼠：防治</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">3.2</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩，防治率</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">76.2%</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 28pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 黑体; mso-ascii-font-family: 'Times New Roman'">三、</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 黑体">2007</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 黑体; mso-ascii-font-family: 'Times New Roman'">年下半年发生趋势预报</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 黑体"><o:p></o:p></SPAN></P>
<P class=MsoBodyTextIndent style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 30pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly; mso-char-indent-count: 2.0; mso-char-indent-size: 15.0pt"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312">随着气温的升高和有害生物基数的加大，<SPAN lang=EN-US>7、8、9三个月将是食叶害虫和蛀干害虫发生的高峰时期，食叶害虫中杨小舟蛾、杨扇舟蛾第三、四代是全年中危害最为严重时代，竹蝗在这三个月中是取食和迁飞高峰期，也将对竹构成严重危害；蛀干害虫中云斑天牛、桑天牛、松褐天牛也将出现危害局面；杨树溃疡病在9-10有一个小的高峰，但因传染源分布面积不大且在上半年5月份均作了一次防治，不会导致大面积发生。如今年7、8月不发生大的、长时间的高水位，东方田鼠下半年不会发生新的危害，如汛期过长且水位过高，秋后鼠害会有新的发生，但相对来说会减轻明年鼠害危害程度。<o:p></o:p></SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 28.5pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly"><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">1</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">、食叶害虫</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 28.5pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">杨扇舟蛾、杨小舟蛾：发生面积</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">19</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩，上半年轻中危害的林地将在下半年继续受到危害，上半年低虫口感染面积将受到危害。主要发生地集中在南县（含大通湖区）、沅江市、资阳区，赫山区部分林地有危害，危害地类以垸内为主，部分湖洲及河滩地除受以上两种虫害外，还可能伴随有其它食叶害虫危害。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 28.5pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">马尾松毛虫、思茅松毛虫：发生</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">3.5</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩，主要在安化县发生。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 28.5pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">黄脊竹蝗：发生</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">7</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩，部分地段会发生较重危害，面积约</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">1</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩。主要分布在安化县长塘镇、小淹镇、仙溪镇，桃江县松木塘镇、泗里河乡及赫山区新市渡镇、泥江口镇等区域。但整体趋势平稳，不会发生大面积成灾。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 28.5pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly"><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">2</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">、蛀干害虫</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"><SPAN style="mso-spacerun: yes"> </SPAN><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 28.5pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">云斑天牛、桑天牛：预计下半年发生达到</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">45</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩，比上年度有所增加。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 28.5pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">松褐天牛：危害轻度以上面积达到</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">10</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩，以安化县库区为主。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 28.5pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly"><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">3</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">、病害</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"><SPAN style="mso-spacerun: yes"> </SPAN><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 28.5pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly"><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"> <o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 28.5pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">杨树溃疡病：发生</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">0.4</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">,</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">以危害湖洲片林为主。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 28.5pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly"><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">4.</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">鼠害</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 28.5pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">东方田鼠：发生</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312">1-3</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">万亩之间，以洲滩抬垄造林地为主。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 28pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 黑体; mso-ascii-font-family: 'Times New Roman'">四、</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 黑体">2007</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 黑体; mso-ascii-font-family: 'Times New Roman'">年下半年林业有害生物防治措施</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 黑体"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 30pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly; mso-char-indent-count: 2.0; mso-char-indent-size: 15.0pt"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-ascii-font-family: 'Times New Roman'">（一）加强监测预报。</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312">进一步强化沅江市、桃江县和安化县三个国家级监测站职能，并发动造林企业内部加强管理，搞好监测，做到早预报、早准备。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 30pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly; mso-char-indent-count: 2.0; mso-char-indent-size: 15.0pt"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-ascii-font-family: 'Times New Roman'">（二）加强综合防治。</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312">探索营林、生物、仿生等方面防治措施，减少化学药剂的使用，推进无公害化防治</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312; mso-ascii-font-family: 'Times New Roman'">。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 仿宋_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 30pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly; mso-char-indent-count: 2.0; mso-char-indent-size: 15.0pt"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-ascii-font-family: 'Times New Roman'">（三）加强宣传教育。</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312">进一步扩大林业有害生物对林业和经济危害的宣传，提高全民防范、防治、防控林业有害生物意识。</SPAN><SPAN lang=EN-US style="FONT-SIZE: 15pt; mso-fareast-font-family: 楷体_GB2312"><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 30pt; LINE-HEIGHT: 28pt; mso-line-height-rule: exactly; mso-char-indent-count: 2.0; mso-char-indent-size: 15.0pt"><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 楷体_GB2312; mso-ascii-font-family: 'Times New Roman'">（四）加大资金投入。</SPAN><SPAN style="FONT-SIZE: 15pt; FONT-FAMILY: 仿宋_GB2312">争取业务主管部门加大在林业有害生物测报方面的基础投入，改善改进设备，加强测报能力建设；动员造林企业在防治设施上购入专业设备，加强防治能力建设。<SPAN lang=EN-US><o:p></o:p></SPAN></SPAN></P>
附件下载：Info20071010_2738.jpg
|
| |
|
|