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三代粘虫进入发生盛期
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三代粘虫进入发生盛期
2015年8月13日,全国农业技术推广服务中心发布了当前我国三代粘虫发生情况。根据信息显示,自7月末始,三代粘虫在东北、华北和黄淮北部陆续发生,目前大部地区已进入发生盛期。截至8月11日,黑龙江、吉林、辽宁、内蒙古、河北、北京、天津、山西、山东和河南等10个省(区、市)发生,发生面积为1766万亩。目前幼虫以3龄以上高龄为主,玉米田和谷子田发生较为普遍,杂草多、管理粗放田块发生重,其中辽宁朝阳、内蒙古通辽、吉林松原和四平、河北廊坊和沧州、天津静海、山东威海等地有局部出现高密度集中为害田块。 目前...
Insecticides China News 201508 (Chinese version)
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