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用溴氰菊酯、久效磷、灭多威及硫丹４种杀虫剂以浸渍法分别累代处理敏感棉蚜，选育至１６代，棉蚜对溴氯菊酯的抗性倍数达６７１９倍，对灭多威、久效磷及硫丹的抗性倍数分别为１９．９、１０．７和８．５倍。用计算机模拟预测棉蚜对４种药剂的抗性发展速度，若用上述４种药剂连续选育３２代，则棉蚜对溴氰菊酯、灭多威、久效磷及硫丹的抗药性将分别达６０７２１．７、２７９．３、１６．９０及６９．２倍。
With the insecticides deltamethrin, monocrotophos, methomyl and endosulfan, respectively, by the impregnation method to deal with the sensitive cotton aphid generations, breeding to 16 generations, cotton aphid resistance to bryonfrin 6795 Fold, the multiple of resistance to methomyl, monocrotophos and endosulfan were 19.9, 10.7 and 8.5 times respectively. A computer simulation was used to predict the development of cotton aphid’s resistance to four kinds of agents. If 32 generations were selected by the above four agents, the resistance of cotton aphids to deltamethrin, methomyl, monocrotophos and endosulfan Will reach 60721.7, 279.3, 16.90 and 69.2 times respectively.