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棉虫防治上的问题很多,这里只谈棉田打药的关键问题和打药的标准,借答同志们垂询并请指正.棉田打药治虫,常有人说效果不好,甚至对药剂的效能发生怀疑.其实,影响药剂杀虫效果的因子很多,轻下结论是不妥当的.一、棉田打药治虫的关键生产实践中防治效果的好坏,一般有以下五个关键性问题,只要过好这五关,防治效果就好;掌握不住,效果就差.1.对症下药 每种杀虫药剂,对各种害虫的防治效果当然是不相同的.这种药防治这种虫子好,防治另一种虫子不一定也好,甚至完
There are many problems in the prevention and control of cotton insects. Here we only talk about the key issues of drug fight in the cotton fields and the standards of drug fight, and please answer the questions and suggestions from comrades. Cotton fields play a role in pest control. Some people say that the effect is not good and even doubt the efficacy of medicaments. , Many factors that affect the insecticidal effect of pesticides, light conclusion is not appropriate .Table 1, the key to cotton insecticide production and control practices in the prevention and control of good or bad, generally have the following five key issues, as long as the good five, Prevention and control effect is like; can not hold, the effect is poor .1. Each of the right insecticide pesticides, prevention and treatment of various pests, of course, is not the same effect .This medicine is good to control such insects, prevention and control of another insects Certainly, even finished