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以人工饲料饲养棉铃虫幼虫，采用ＦＡＯ推荐的点滴法测定了两种常用杀虫剂对我国北方棉区一些地方棉铃虫的毒力，并以泰安敏感虫种为对照，鉴别抗性是否存在。在我国用拟除虫菊酯类药剂较多的棉区，１９８６年的棉铃虫对氰戊菊酯抗性已有显示；１９９０年及１９９３年对该药的最高抗性倍数分别达到７０．０倍及３９８．５倍，均出现于山东省境内；而该虫对久效磷的抗性程度相对较低，１９９０年最高抗性达１２．７倍（河北正定），１９９３年山东省境内最高抗性达１６．６倍（聊城）。在室内分别用氰戊菊酯、灭多威、甲基对硫磷、辛硫磷及甲基对硫磷－辛硫磷（３：２）以选育泰安敏感棉铃虫的抗药性，其抗性提高倍数依次为：３１１．０（Ｆ＿（１５））、１０．８（Ｆ＿（１２））、３．５倍（Ｆ＿（１４））、５．２（Ｆ＿（１３））及４．８倍（Ｆ＿（１２））。
Helicoverpa armigera larvae were fed on artificial diet, and the toxicity of two commonly used insecticides to some local cotton bollworm in northern cotton area of China was determined by spotting method recommended by FAO. The susceptible species of Tai’an were used as control to identify the existence of resistance. The resistance to fenvalerate of H. armigera in 1986 has been shown to be high in cotton areas with more pyrethroid agents in China. In 1990 and 1993, the highest resistance to the fenvalerate was 70.0-fold and 398.5-fold, all in Shandong Province; and the insects of monocrotophos resistance is relatively low, the highest resistance in 1990 up to 12.7 times (Hebei Zhengding), Shandong Province in 1993 the highest resistance Up to 16.6 times (Liaocheng). In the laboratory, fenvalerate, methomyl, methyl parathion, phoxim and methyl parathion-phoxim (3: 2) The sexual enhancement multiples were 311.0 (F 15), 10.8 (F 12), 3.5 (F 14), 5.2 (F 13) and 4.8 Times (F_ (12)).