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棉花蕾铃期是多种害虫发生为害的猖厥时期。此期可同时出现几种乃至10余种集中蛀食棉花的蕾、花、铃或吸吮叶片。轻者造成落花、落蕾,重者引起僵瓣、烂铃,造成严重减产。采用药剂保护,是此期防治的重要手段。但此期棉花枝叶繁茂,害虫危害较为隐蔽,常规喷雾,往往难于凑效。加上害虫天敌活动频繁影响天敌生长。为了协调化防与生防,达到保益防害的目的,现综合各地有效经验介绍于下,供参考。
Cotton boll stage is a variety of pest damage occurs during the rampant. During this period, several kinds of buds, flowers, bells or sucking leaves that focus on the eaten cotton may appear at the same time. Light caused by falling, falling buds, severe caused petal flap, bad bell, causing serious cuts. The use of pharmaceutical protection, is an important means of prevention and treatment of this period. But this period lush cotton leaves, pests more subtle hazards, conventional spray, often difficult to work together. Coupled with pest predators frequently affect the growth of natural enemies. In order to coordinate prevention and biological prevention and achieve the goal of protecting benefits and preventing harm, we shall make a comprehensive introduction on the basis of effective experiences from all over the world for reference.