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8、9月份是京郊烟粉虱发生的高峰期,大量的烟粉虱直接刺吸植物叶片汁液,造成植株衰弱,分泌蜜露造成煤污病的发生。另外,还可以在30多种作物上传播70种以上的病毒病,危害严重。为降低烟粉虱造成的损失,日前北京市植物保护站蔬菜作物科要求菜农应依据“防早、控少、治小”原则,及时做好防控工作。1.清洁田园,减少虫源。烟粉虱可在杂草上大量繁殖,成为传播的源头,因此一定要注意清除田间和棚室周围杂草,保持棚室
August and September is the peak of the occurrence of Bemisia tabaci in the suburbs of Beijing. A large amount of whitefly, Whitefly, directly suck the plant leaf juice, resulting in the weakness of the plant and the secretion of honeydew causing the occurrence of coal pollution. In addition, more than 70 kinds of virus diseases can be transmitted on more than 30 kinds of crops, which are detrimental. In order to reduce the loss caused by whitefly, the vegetable crops department of Beijing Plant Protection Station recently requested that farmers should make timely prevention and control work based on the principle of “preventing early, controlling less and treating small ones”. 1. Clean the garden, reduce the source of insects. Bemisia tabaci can multiply on weeds and become the source of transmission, so we must pay attention to clear the weeds in the field and the greenhouse, keep the greenhouse