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应用FAO推荐的微量毛细管点滴法，测定了棉蚜对六种常用杀虫剂的LD50，并与敏感蚜比较。得出抗药性倍数。棉蚜对有机磷杀虫剂的抗药性，增加缓慢，从1960年至今增加了500～700倍。而对于拟菊酯类杀虫剂的抗性增加较快，仅3～4年就达到667。7～9937．4倍。每年增加1.5～2倍。本项研究还应用棉蚜的防治指标和综合治理措施，对抗性棉蚜进行了治理抗性的试验研究。
The LD50 of cotton aphid against six commonly used insecticides was determined by the microtiter capillary point method recommended by FAO and compared with the susceptible aphid. Obtain resistance multiples. Cotton aphid resistance to organophosphate insecticides, increasing slowly, from 1960 to date increased by 500 to 700 times. However, the resistance to the insecticides of the pyrethroids increased rapidly, reaching 667.7 to 9937.4 times in only 3 to 4 years. Increase 1.5 to 2 times each year. In this study, the control index and comprehensive control measures of cotton aphid were also used to test the resistance of the resistant cotton aphid.