棉花害虫种类繁多,发生时期往往互相重叠,致同一块棉田往往有好几种棉虫同时为害,给防治上带来了困难。兹将棉花目前三种主要害虫——蚜虫,红蜘蛛和盲蝽蟓的发生和防治法介绍如后,供作参考。一棉花蚜虫,红蜘蛛和盲蝽蟓的发生和危害性:1.棉蚜:在各棉区都有发生,而以华北、东北、西北以及河南、山东等省为害最烈。 There are many kinds of cotton pests, which often overlap with each other during the occurrence period. In the same cotton field, several kinds of cotton insects are often harmed at the same time, which brings difficulties in prevention and control. The current three major cotton pests - aphids, spider mites, and bugs are introduced here for reference. A cotton aphids, red spider and blind bugs occurrence and hazards: 1. Cotton aphid: occurred in all cotton areas, while in North China, northeast, northwest and Henan, Shandong and other provinces most affected.