棉蚜、棉铃虫是我国北方棉区的主要害虫。田间化学防治多年沿用 E605、DDT 等杀虫剂,棉蚜、棉铃虫产生了抗药性,防治效果显著降低,使用浓度和防治次数不断增加。提高了防治成本,还大量杀伤天敌,严重污染环境,而棉花年年仍受棉蚜、棉铃虫为害造成不同程度的减产。 Cotton aphids, cotton bollworm is the main pest in northern cotton area of ​​our country. Field chemical control for many years along with E605, DDT and other insecticides, cotton aphids, cotton bollworm resistance, the control effect was significantly reduced, the use of concentration and the number of prevention and control continues to increase. Increase the cost of prevention and treatment, kill a large number of natural enemies in a large amount, and seriously pollute the environment. However, cotton is still affected by cotton aphids and cotton bollworm every year to different degrees of yield reduction.