【目的】 比较新型杀虫剂对棉铃虫Helicoverpa armigera田间种群的毒力效果，从中筛选出高效农药种类，为当前棉铃虫防治中合理用药提供参考。【方法】 在室内采用点滴法，测定了甲氨基阿维菌素苯甲酸盐（甲维盐）、氯虫苯甲酰胺、溴氰虫酰胺、茚虫威、溴虫腈、甲维•茚虫威对4个地理种群棉铃虫3龄幼虫的毒力效果；并比较了甲维盐、氯虫苯甲酰胺对2-5龄幼虫的毒力作用。【结果】 6种杀虫剂对3龄幼虫的毒力效果从高到低的顺序依次为：氯虫苯甲酰胺>甲维盐>甲维•茚虫威>溴氰虫酰胺>茚虫威>溴虫腈；不同地理种群对茚虫威的敏感性差异最大，其次依次为甲维•茚虫威、氯虫苯甲酰胺、溴氰虫酰胺、甲维盐和溴虫腈。甲维盐、氯虫苯甲酰胺对2-4龄幼虫均具有较好毒杀效果，但氯虫苯甲酰胺对5龄幼虫的毒效明显优于甲维盐。【结论】 氯虫苯甲酰胺和甲维盐是当前防治棉铃虫的首选农药，且氯虫苯甲酰胺对高龄幼虫毒杀效果较好。

 [Objectives]  To determine the relative toxicity of six insecticides to the cotton bollworm Helicoverpa armigera and provide a foundation and reference for the rational use of insecticides in the management of this pest. [Methods]  Using the topical application method, the toxicities of six insecticides; emamectin benzoate, chlorantraniliprole, cyantraniliprole, indoxacarb, chlorfenapyr, and a mixture of emamectin benzoate and indoxacarb (M-EBI), were tested on 3rd instar H. armigera larvae which collected from four wild populations. The effectiveness of emamectin benzoate and chlorantraniliprole against 2nd-5th instar larvae were also compared. [Results]  The relative toxicity of these six insecticides against H. armigera was: chlorantraniliprole > emamectin benzoate > M-EBI > cyantraniliprole > indoxacarb > chlorfenapyr. The sensitivity of H. armigera from the four different populations to same insecticide varied; sensitivity to indoxacarb varied the most, followed by sensitivity to M-EBI, chlorantraniliprole, cyantraniliprole, emamectin benzoate and chlorfenapyr. Emamectin benzoate and chlorantraniliprole were both highly toxic to 2-4 instar larvae but chlorantraniliprole was more toxic to 5th instar larvae than emamectin benzoate. [Conclusion]  Emamectin benzoate and chlorantraniliprole are currently the best choices for controlling H. armigera and chlorantraniliprole is more effective on older larvae than emamectin benzoate.