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阐述了目前棉田使用杀虫剂中存在的问题和必须考虑的几个因素；根据多年试验结果，提出了棉田杀虫剂使用技术体系的主要内容，并通过示范对其经济效益进行了考核和分析
The problems existing in the use of insecticides in cotton fields and several factors that must be considered are described. According to the results of many years of experiments, the main contents of the technical system for the use of insecticides in cotton fields are put forward, and their economic benefits are evaluated and analyzed through demonstration