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截止至3月9日,中国油菜蚜虫发生面积同比减少30.7%
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截止至3月9日,中国油菜蚜虫发生面积同比减少30.7%
截止至2018年3月9日,中国油菜蚜虫全国发生面积698.9万亩(46.59万公顷),同比减少30.7%。冬油菜主产区普遍发生,西南地区虫量高。各省(市)平均百株蚜量,四川523头,江西390头,云南328头,湖南、贵州、重庆100头左右,湖北、安徽、河南、陕西一般为15-35头。最高百株蚜量,云南楚雄局部高达5.2万头,四川为5850头,湖南东安、湘潭、邵东超过3000头,江西、湖北、贵州、河南为1000-1500头,陕西、安徽、重庆为200-470头。 另外油菜甲虫在陕西、河南、云南和湖南有...
Insecticides China News 201803 (Chinese version)
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