通过离体酶活性测定 ,研究取食小麦、豌豆等寄主植物和人工饲料对棉铃虫羧酸酯酶、谷胱甘肽 S-转移酶和乙酰胆碱酯酶活性的影响。结果表明取食不同寄主植物的棉铃虫体内羧酸酯酶活性不仅存在量的差异 ,而且存在质的差异 ,寄主植物对棉铃虫谷胱甘肽 S-转移酶、乙酰胆碱酯酶活性有显著影响 In vitro enzymatic activity assays were used to study the effects of feeding host plants such as wheat and peas on the activities of carboxylesterase, glutathione S-transferase and acetylcholinesterase in cotton bollworm (Helicoverpa armigera). The results showed that the carboxylesterase activity of H. armigera fed on different host plants was not only different in quantity, but also different in quality. The host plants had significant effects on the activities of glutathione S-transferase and acetylcholinesterase