【目的】 本研究旨在评估昆明市石林地区西花蓟马Frankliniella occidentalis田间种群对6种药剂的敏感性，并对供试农药的田间药效进行评价，以筛选更高效防治药剂并建立西花蓟马防治策略。【方法】 采用叶管药膜法测定田间种群与室内敏感种群西花蓟马的毒力差异，结合双剂量田间药效试验（药剂推荐剂量及其2倍剂量）评价防效。【结果】 毒力测定结果表明，昆明市石林地区的西花蓟马对供试药剂仍处于敏感状态，抗性倍数均低于5倍；田间试验结果表明，乙基多杀菌素和金龟子绿僵菌这2种药剂对西花蓟马的防效较高；药后3 d，乙基多杀菌素对西花蓟马的防治效果高达91.01%，具有良好的速效性；药后7 d，金龟子绿僵菌对西花蓟马的防治效果达到74.92%，持效性良好。【结论】 综合室内毒力测定和田间药效试验结果，推荐使用乙基多杀菌素为防治西花蓟马的首选药剂，可与金龟子绿僵菌轮换使用，以延缓抗药性发展。

 [Aim]  To evaluate the susceptibility of populations of Frankliniella occidentalis in the Shilin area of Kunming to 6 commonly used insecticides, assess the efficacy of these, and identify more effective control agents for controlling this pest. [Methods]  The TIBS bioassay method was used to assess the toxicity of the 6 different insecticides to each population. A double-dose field efficacy test (using the recommended dose and twice the recommended dose of each pesticide) was conducted to determine the efficacy of each pesticide. [Results]  All populations of F. occidentalis had ratios of resistance to the tested pesticides of < 5-fold and were therefore susceptible. Field trial results showed that 6% spinetoram suspension concentrate and 10 billion spores∙g^﹣1 Metarhizium anisopliae suspension concentrate, were most effective against F. occidentalis. The control efficacy of 6% spinetoram suspension concentrate reached 91.01% just 3 d after application, which is excellent, rapid effectiveness. The control efficacy of 10 billion spores∙g^﹣1 M. anisopliae suspension concentrate reached 74.92% 7 d after application, which is good sustained effectiveness. [Conclusion]  Based on the results of toxicity tests and field efficacy trials, 6% spinetoram suspension concentrate was the best of six insecticides tested for controlling F. occidentalis. To delay the development of pesticide resistance this should be used in rotation with 12% chlorfenapyr·lufenuron suspension concentrate and 10 billion spores∙g^﹣1 M. anisopliae suspension concentrate.