安徽农学通报2023年02期病原菌·有害生物·动植物防护作者简介戴旭东(1972—),男,农艺师,从事农业技术推广工作。收稿日期2021-12-224种杀虫剂对花椰菜甜菜夜蛾和斜纹夜蛾的防治效果戴旭东1翟勤2(1和县农业技术推广中心,安徽和县238200;2和县植保植检站,安徽和县238200)摘要该文研究了4种化学杀虫剂对花椰菜甜菜夜蛾和斜纹夜蛾的防治效果。结果表明,34%乙基多杀菌素甲氧虫酰肼悬浮剂、60g/L乙基多杀菌素悬浮剂和200g/L氯虫苯甲酰胺悬浮剂对2种害虫的防效较好。药后3d,3种药剂对甜菜夜蛾防效为88.17%~92.05%,对斜纹夜蛾的防效为87.51%~93.15%。药后7和14d,3种药剂对甜菜夜蛾的防效在90.29%以上,对斜纹夜蛾的防效在83.53%以上。25g/L联苯菊酯乳油对2种害虫的防效较差。关键词杀虫剂;甜菜夜蛾;斜纹夜蛾;防效中图分类号S436.3文献标识码A文章编号1007-7731(2023)02-0109-04FieldEfficacyofFourInsecticidesagainstSpodopteraexiguaandS.lituraonBroccoliDAIXudong1ZHAIQin2(1HexianAgro-TechExtensionCenter,HexianAnhui238200;2HexianPlantProtectionandQuarantineStation,HexianAnhui238200)AbstractThefieldefficacyoffourinsecticidesagainstSpodopteraexiguaandS.lituraonbroccoliwasstudiedonthispaper.Theresultsshowedthatspinetoram+methoxyfenozide34%SC,spinetoram60g/LSCandchlorantraniliprole200g/LSCprovidedbettercontrolofthetwopestinsects.At3daysafterthetreatment,thecontrolefficacyofthethreeinsecticidesagainstS.exiguarangedfrom88.17%to92.05%andS.liturarangedfrom87.51%to93.15%.At7and14daysafterthetreatment,thecontrolefficacyofthethreeinsecticidesagainstS.exiguawashigherthan90.29%andS.liturahigherthan83.53%.However,bifenthrin2.5g/LECwaslesseffectiveagainstthetwopestinsects.Keywordsinsecticides;Spodopteraexigua;spodopteralitura;controlefficacy甜菜夜蛾(SpodopteraexiguaHübner)属鳞翅目夜蛾科,是为害多种农作物的重要害虫,此虫在我国南北各省均有发生,以长江流域及以南省份发生普遍[1]。甜菜夜蛾食性杂,其幼虫取食的寄主范围涉及30余科130余种植物,如玉米、棉花、甜菜、芝麻、花生以及多种蔬菜作物[2]。在蔬菜中,受害最重的是十字花科蔬菜和豆科蔬菜。甜菜夜蛾以幼虫为害,低龄幼虫在叶背群集结网食害叶肉,蔬菜叶片仅剩1层表皮和叶脉,呈窗纱状;高龄幼虫吃叶成...