6种杀虫剂对草地贪夜蛾的防效及对螟黄赤眼蜂的安全性  

Control efficiency of six insecticides on the Spodoptera frugiperda and the evaluation of toxicity to Trichogramma chilonis Ishii

作　　者：赵建伟[1] 赵金凤 邱良妙[1] 丁雪玲[1] 游世奇 何玉仙[1] 卢学松[1] ZHAO Jianwei;ZHAO Jinfeng;QIU Liangmiao;DING Xueling;YOU Shiqi;HE Yuxian;LU Xuesong(Institute of Plant Protection,Fujian Academy of Agricultural Sciences,Fuzhou,Fujian 350012,China;Plant Protection and Quarantine Station of Changting County,Longyan,Fujian 366300,China)

机构地区：[1]福建省农业科学院植物保护研究所,福建福州350012 [2]福建省长汀县植保植检站,福建龙岩366300

出　　处：《福建农业学报》2023年第8期960-965,共6页Fujian Journal of Agricultural Sciences

基　　金：福建省科技计划公益类专项(2022R1024002);福建省农业科院科技创新团队建设项目(CXTD2021027);福建省农业高质量发展超越“5511”协同创新工程项目(XTCXGC2021011、XTCXGC 2021017);福建省农业科学院科技创新平台专项(CXPT202105);福建省农业科学院自由探索项目(ZYTS202211)。

摘　　要：【目的】明确6种杀虫剂对草地贪夜蛾Spodoptera frugiperda的防效及对螟黄赤眼蜂Trichogramma chilonis的安全性。【方法】分别采用茎叶喷雾法测试甲氨基阿维菌素苯甲酸盐(甲维盐)、乙基多杀菌素、虫螨腈、氯虫苯甲酰胺、虱螨脲和茚虫威对田间玉米草地贪夜蛾的防治效果,采用浸叶法测定以上6种杀虫剂对草地贪夜蛾2龄幼虫的室内毒力,以及试管药膜法研究以上6种杀虫剂对螟黄赤眼蜂的室内毒性。【结果】6种供试药剂对草地贪夜蛾的速效性和持效性均较好,药后1 d对草地贪夜蛾的田间防效达78.68%~95.75%;药后3 d对草地贪夜蛾的防效均达90%以上,药后7 d对草地贪夜蛾的防效仍达88.27%~96.3%。甲维盐、虫螨腈、乙基多杀菌素和氯虫苯甲酰胺对螟黄赤眼蜂具有极强的毒力,其50%推荐剂量即可导致螟黄赤眼蜂全部死亡,预示着上述这些杀虫剂的田间应用对螟黄赤眼蜂具有很高的直接杀伤风险;茚虫威和虱螨脲对螟黄赤眼蜂的毒力均较低。【结论】综上,甲维盐、虫螨腈、乙基多杀菌素和氯虫苯甲酰胺可作为草地贪夜蛾应急防治的首选药剂,茚虫威和虱螨脲可作为草地贪夜蛾综合防控的推荐用药。【Objective】To determine the control efficiency of six insecticides(emamectin benzoate,spinetoram,clorfenapyr,chlorantraniliprole,lufenuron and indoxacarb)on Spodoptera frugiperda and their toxicity to Trichogramma chilonis Ishii.【Methods】Foliar spray application was used to evaluate the control efficiency of those insecticides on Spodoptera frugiperda in the field,leaf dipping was adopted to examine the toxicity of those insecticides to the second-instar larvae of S.frugiperda in the lab,and residues contact was carried out to test the toxicity of those insecticides to T.chilonis.【Results】Those tested insecticides had acute and long-lasting toxicity to S.frugiperda.The control efficiency was 78.68%-95.75%,more than 90%,and 88.27%-96.3%,respectively,on the 1st,3rd and 7th day after insecticide application.Emamectin benzoate,spinetoram,clorfenapyr and chlorantraniliprole were highly toxic to T.chilonis,with half of their field recommended dosage causing mortality rates of 100%,implying the application of those insecticides in the field is dangerous to T.chilonis.However,the toxicity of lufenuron and indoxacarb to T.chilonis was low.【Conclusion】Emamectin benzoate,spinetoram,clorfenapyr and chlorantraniliprole can be used first for emergency control of S.frugiperda.Lufenuron and indoxacarb can also be used in the integrated pest management of S.frugiperda.

关 键 词：草地贪夜蛾 螟黄赤眼蜂 杀虫剂 毒力 田间药效 

分 类 号：S435.132[农业科学—农业昆虫与害虫防治]