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预计南方稻区害虫加重
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预计南方稻区害虫加重
摘要:目前,华南、江南中稻陆续成熟,晚稻处于分蘖至孕穗期。长江中下游和江淮单季稻处于抽穗至灌浆期,西南和东北单季稻处于灌浆乳熟期。水稻病虫害总体中等发生(3级),其中稻飞虱、二化螟、纹枯病中等发生(3级),稻纵卷叶螟偏轻至中等发生(2-3级)。近日,据中央气象台预报,未来10天南方稻区没有明显降雨,江南和华南的部分地区还有35℃以上的高温天气。不凉的气候条件有利于稻飞虱的发生繁殖。尤其是华南和江南双季晚稻区距离收获还有1-2个代次,稻飞虱存在点片暴发成灾的风险。 据统计,当前全国水稻病虫害发生面...
Insecticides China News 201909(Chinese version)
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