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稻飞虱和稻纵卷叶螟累计发生面积分别同比增加30.5%和69.5%
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稻飞虱和稻纵卷叶螟累计发生面积分别同比增加30.5%和69.5%
据全国农技中心消息,南方早稻当前大部处于孕穗期,正值水稻"两迁"害虫发生为害关键阶段。据各地监测,5月中旬以来,华南、江南和西南南部早稻区"两迁"害虫迁入量大、田间虫口密度高,发生程度明显重于上年同期。截至6月12日,稻飞虱和稻纵卷叶螟累计发生面积分别同比增加30.5%和69.5%。下阶段,长江中下游及其以南大部地区将有明显降雨过程,降水量偏多,有利于"两迁"害虫的发生繁殖。预计早稻后期稻飞虱在华南和江南东部稻区偏重发生(4级),华南东部和江南东部局部大发生(5级);稻纵卷叶螟在华南、江南稻区中...
Insecticides China News 201906(Chinese version)
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