二代稻纵卷叶螟将中等发生
2010
07/09
12:38
1793
据随州市植物保护工作站近期调查，各地田间赶蛾亩蛾量0-200头，平均30头，田间虫量较轻于去年同期。但是，由于今年我市优质稻面积达80万亩以上，且水稻正处分蘖末期至孕穗期，营养条件好，对稻纵卷叶螟的发生有利；同时，因为6月份干旱少雨，稻纵卷叶螟迁入量少。而据气象部门预报，我市本月上旬中期、后期各有一次较明显降水天气过程，旬雨量正常略偏多，可能入梅，有利于稻纵卷叶螟迁入和危害。
因此，植保专家建议，把优质稻和生长嫩绿的田块作为防治重点，时间以7月8日-15日内为宜，当百蔸小苞达30个以上的田块为防治对象田。
防治药剂主要有：（1）亩用25%螟蛾杀星(毒.单)60-90克或20%闪击螟 (阿.三)50－70ml或48%毒死蜱亩用60－80ml；（2）亩用1.8%福成 （阿维＋助剂）40ml或1.8%卷叶康（阿维）80－100ml；（3）18%杀虫双亩用300ml。
来源：
随州日报社
发布人：
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