Abstract: To clarify the effects of high temperature and insecticides on the parasitic capacity of Telenomus remus，and to optimize its integrated use with chemical controls against Spodoptera frugiperda，the lifespan and parasitic capacity of T.remus at 26 ℃ and 35 ℃ were determined，and the safety of five common insecticides against T.remus was also evaluated via selective toxicity assays.Results showed that when exposed to 35 ℃，the survival time and parasitism of T.remus decreased，the parasitism duration of single egg and the parasitism interval of eggs increased，and the emergence rate of T.remus decreased，and the negative effect increased with the prolongation of exposure time.Compared to 26 ℃，exposure to 35 ℃ for 12，24，and 48 h reduced parasitoid survival time by 13.28%，13.55%，and 32. 88%，respectively；the total parasitism by 20.84%，27.13%，and 46.26%，and emergence rate by 9.22%，11.80%，and 19.26%. Concurrently，the time required to parasitize a single egg was extended by 26.98%，38.25%，and 79.71%，and the parasitism interval of eggs increased by 22.93%，46.50%，and 71.81%.The 5% lufenuron，30% chlorantraniliprole，5% emamectin benzoate，10 billion PIB S.litura nucleopolyhedrovirus，and 10 billion cfu/g Bacillus thuringiensis，all exhibited negative selectivity against both adult T.remus and parasitized eggs.The selective toxicity ratio（STR）values for adult T.remus were 0.94，0.93，0.42，0.73，and 0.78，respectively，while the STR values for parasitized eggs were 0. 62，0.71，0.73，0.86 and 0.75，respectively.In conclusion，high⁃temperature 35 ℃ reduces the parasitic effect of T.remus，so the release of T.remus at 35 ℃ should be avoided. While integrated use of T.remus with 5% lufenuron shows potential for field control of S.frugiperda，insecticide applications should be withheld as much as possible during the peak period of parasitized eggs.

Key words: Telenomus remus, Spodoptera frugiperda, High temperature, Insecticide, Selective toxicity ratio（STR）

摘要： 为明确高温和药剂对夜蛾黑卵蜂（Telenomus remus）寄生作用的影响，协调利用夜蛾黑卵蜂和化学药剂防治草地贪夜蛾（Spodoptera frugiperda），分别测定26 ℃和35 ℃条件下夜蛾黑卵蜂的寿命及寄生作用；采用选择毒力指数测定法，测定5种常用防治草地贪夜蛾的药剂对夜蛾黑卵蜂的安全性。结果表明，在35 ℃高温下，夜蛾黑卵蜂存活时间、寄生量降低，单粒卵寄生时长和卵粒寄生间隔增加，羽化率下降，且随高温处理时间延长其负面影响增强。与26 ℃相比，35 ℃处理12、24、48 h后，夜蛾黑卵蜂的存活时间分别下降13.28%、13.55%和32.88%，总寄生量分别下降20.84%、27.13%和46.26%，羽化率分别下降9.22%、11.80% 和19.26%；同时，寄生单粒草地贪夜蛾卵所需时长分别延长26.98%、38.25% 和79.71%，卵粒寄生间隔分别延长22.93%、46.50%和71.81%。常用防治草地贪夜蛾的药剂5%虱螨脲、30%氯虫苯甲酰胺、5%甲氨基阿维菌素苯甲酸盐、100亿PIB斜纹夜蛾核型多角体病毒和100亿芽孢/克苏云金杆菌对夜蛾黑卵蜂成蜂和寄生卵均表现出负向选择性，对夜蛾黑卵蜂成蜂的选择毒力指数（STR）值分别为0.94、0.93、0.42、0.73和0.78，对寄生卵的STR值分别为0.62、0.71、0.73、0.86和0.75。综上，35 ℃高温处理降低了夜蛾黑卵蜂的寄生作用，应避免在35 ℃高温下释放夜蛾黑卵蜂。此外，在田间可利用夜蛾黑卵蜂和5%虱螨脲协同防治草地贪夜蛾，但在寄生卵高峰期应尽可能避免使用药剂。

关键词: 夜蛾黑卵蜂, 草地贪夜蛾, 高温, 农药, 选择毒力指数