我区有三十多年的植棉历史,棉花害虫成为提高产量和品质的主要障碍之一。为了治虫保产,历年来一直采用有机磷、有机氯农药,棉虫抗性增强,使用浓度越来越大,打药次数不断增加,致使成本提高,污染加重,中毒增多,严重影响了棉花生产和人畜健康。为寻找高效低毒低残留的农药品种,我们于1982年选用国产20%中西杀灭菊酯与当前棉区使用广、用量大的常规农药,进行 With over 30 years of cotton-growing history in our area, cotton pests have become one of the major obstacles to improving yields and quality. For insect pest control, over the years has been using organic phosphorus, organochlorine pesticides, cotton insects increased resistance, the use of concentration is increasing, the number of batches increased, resulting in increased costs, increased pollution, increased poisoning, seriously affected the cotton production and Human and animal health. In order to find efficient, low toxicity and low residual pesticide varieties, we selected 20% of domestic and western fenvalerate in 1982 and used a large amount of conventional pesticides in the current cotton area to carry out