第三代稻螟虫预防措施_资讯_农业致富网手机版

第三代稻螟虫预防措施

2015-05-18 21:21 点击:136

normal style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 18pt; LINE-HEIGHT: 125%; TEXT-ALIGN: left; mso-char-indent-count: 2.0; mso-pagination: widow-orphan; mso-layout-grid-align: none" align=left>根据田间化蛹进度剥查，结合历年资料和近期气象预报综合分析，预计本区的第三代螟虫发生如下：　　

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normal style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; LINE-HEIGHT: 125%; TEXT-ALIGN: center; mso-pagination: widow-orphan; mso-layout-grid-align: none" align=center>螟蛾盛发期			normal style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; LINE-HEIGHT: 125%; TEXT-ALIGN: center; mso-pagination: widow-orphan; mso-layout-grid-align: none" align=center>螟卵盛孵期
normal style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; LINE-HEIGHT: 125%; TEXT-ALIGN: center; mso-pagination: widow-orphan; mso-layout-grid-align: none" align=center>始期	normal style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; LINE-HEIGHT: 125%; TEXT-ALIGN: center; mso-pagination: widow-orphan; mso-layout-grid-align: none" align=center>高峰期	normal style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; LINE-HEIGHT: 125%; TEXT-ALIGN: center; mso-pagination: widow-orphan; mso-layout-grid-align: none" align=center>末期	normal style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; LINE-HEIGHT: 125%; TEXT-ALIGN: center; mso-pagination: widow-orphan; mso-layout-grid-align: none" align=center>始期	normal style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; LINE-HEIGHT: 125%; TEXT-ALIGN: center; mso-pagination: widow-orphan; mso-layout-grid-align: none" align=center>高峰期	normal style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; LINE-HEIGHT: 125%; TEXT-ALIGN: center; mso-pagination: widow-orphan; mso-layout-grid-align: none" align=center>末期
normal style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; LINE-HEIGHT: 125%; TEXT-ALIGN: center; mso-pagination: widow-orphan; mso-layout-grid-align: none" align=center>7/18	normal style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; LINE-HEIGHT: 125%; TEXT-ALIGN: center; mso-pagination: widow-orphan; mso-layout-grid-align: none" align=center>7/22-24	normal style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; LINE-HEIGHT: 125%; TEXT-ALIGN: center; mso-pagination: widow-orphan; mso-layout-grid-align: none" align=center>8/1	normal style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; LINE-HEIGHT: 125%; TEXT-ALIGN: center; mso-pagination: widow-orphan; mso-layout-grid-align: none" align=center>7/25	normal style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; LINE-HEIGHT: 125%; TEXT-ALIGN: center; mso-pagination: widow-orphan; mso-layout-grid-align: none" align=center>7/30-8/1	normal style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; LINE-HEIGHT: 125%; TEXT-ALIGN: center; mso-pagination: widow-orphan; mso-layout-grid-align: none" align=center>8/7

normal style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 18pt; LINE-HEIGHT: 125%; TEXT-ALIGN: left; mso-char-indent-count: 2.0; mso-pagination: widow-orphan; mso-layout-grid-align: none" align=left>2．发生量：二代田间亩残留量平均为106头，比去年98头多8头；平均白穗率为0.185%，比去年0.173%高0.008%。预计第三代三化螟为中等发生。　　

normal style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; LINE-HEIGHT: 125%; TEXT-ALIGN: center; mso-pagination: widow-orphan; mso-layout-grid-align: none" align=center>螟蛾盛发期				normal style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; LINE-HEIGHT: 125%; TEXT-ALIGN: center; mso-pagination: widow-orphan; mso-layout-grid-align: none" align=center>螟卵盛孵期
normal style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; LINE-HEIGHT: 125%; TEXT-ALIGN: center; mso-pagination: widow-orphan; mso-layout-grid-align: none" align=center>始期	normal style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; LINE-HEIGHT: 125%; TEXT-ALIGN: center; mso-pagination: widow-orphan; mso-layout-grid-align: none" align=center>高峰期	normal style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; LINE-HEIGHT: 125%; TEXT-ALIGN: center; mso-pagination: widow-orphan; mso-layout-grid-align: none" align=center>末期	normal style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; LINE-HEIGHT: 125%; TEXT-ALIGN: center; mso-pagination: widow-orphan; mso-layout-grid-align: none" align=center>始期	normal style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; LINE-HEIGHT: 125%; TEXT-ALIGN: center; mso-pagination: widow-orphan; mso-layout-grid-align: none" align=center>高峰期	normal style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; LINE-HEIGHT: 125%; TEXT-ALIGN: center; mso-pagination: widow-orphan; mso-layout-grid-align: none" align=center>末期
normal style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; LINE-HEIGHT: 125%; TEXT-ALIGN: center; mso-pagination: widow-orphan; mso-layout-grid-align: none" align=center>7/20	normal style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; LINE-HEIGHT: 125%; TEXT-ALIGN: center; mso-pagination: widow-orphan; mso-layout-grid-align: none" align=center>7/25-27	normal style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; LINE-HEIGHT: 125%; TEXT-ALIGN: center; mso-pagination: widow-orphan; mso-layout-grid-align: none" align=center>8/3	normal style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; LINE-HEIGHT: 125%; TEXT-ALIGN: center; mso-pagination: widow-orphan; mso-layout-grid-align: none" align=center>7/27	normal style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; LINE-HEIGHT: 125%; TEXT-ALIGN: center; mso-pagination: widow-orphan; mso-layout-grid-align: none" align=center>8/1-3	normal style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; LINE-HEIGHT: 125%; TEXT-ALIGN: center; mso-pagination: widow-orphan; mso-layout-grid-align: none" align=center>8/10

normal style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 18pt; LINE-HEIGHT: 125%; TEXT-ALIGN: left; mso-char-indent-count: 2.0; mso-pagination: widow-orphan; mso-layout-grid-align: none" align=left>2．发生量：二代田间亩残留量平均为86头，比去年74头多12头；平均白穗率为0.253%，比去年0.242%高0.011%；预计第三代二化螟为中等发生。　　

normal style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 18pt; LINE-HEIGHT: 125%; TEXT-ALIGN: left; mso-char-indent-count: 2.0; mso-pagination: widow-orphan; mso-layout-grid-align: none" align=left>三、为害趋势：今年螟虫将集中在迟秧田和早、中插本田产卵，本田防治压力较大，受害将较重。　　

normal style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 18pt; LINE-HEIGHT: 125%; TEXT-ALIGN: left; mso-char-indent-count: 2.0; mso-pagination: widow-orphan; mso-layout-grid-align: none" align=left>2．秧田在7月25日至8月10日螟卵盛孵期内要普治一次，或插秧时浸秧尾带药插秧，同时要注意清除卵块。　　

normal style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 18pt; LINE-HEIGHT: 125%; TEXT-ALIGN: left; mso-char-indent-count: 2.0; mso-pagination: widow-orphan; mso-layout-grid-align: none" align=left>3．本田返青后（插秧后5-7天）要立即施药防治，或在出现大量枯心、枯鞘时及时再防治一次，以防止螟虫的转株为害。　　

normal style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 18pt; LINE-HEIGHT: 125%; TEXT-ALIGN: left; mso-char-indent-count: 2.0; mso-pagination: widow-orphan; mso-layout-grid-align: none" align=left>（1）晚稻亩选用40%辛·唑磷乳油120毫升或40%毒死蜱乳油100毫升或20%三唑磷乳油150毫升，兑水40-50公斤喷雾或洗秧尾，防治稻螟虫和卷叶螟。　　

normal style="MARGIN: 0cm 0cm 0pt; LAYOUT-GRID-MODE: char; TEXT-INDENT: 18pt; LINE-HEIGHT: 125%; TEXT-ALIGN: left; mso-char-indent-count: 2.0; mso-pagination: widow-orphan; mso-layout-grid-align: none" align=left>（2）晚稻秧田于秧苗二叶一心至三叶一心期，亩用38.5%苄·二氯可湿粉30-40克兑水40公斤喷雾，防治稗草和阔叶杂草；本田于插秧后5-7天，亩用18％苄·乙·甲可湿粉20克混肥（土）撒施，防除本田杂草。　　

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