摘要： 为筛选对大棚菜豆美洲斑潜蝇寄生蜂毒性小的农药,在丽潜蝇姬小峰、潜蛾姬小峰等寄生蜂大龄幼虫至蛹期,用18种常用农药的常规剂量进行分区处理,试验结果表明:毒死蜱和联苯菊酯毒性最大,寄生蜂校正死亡率大于90%;阿维菌素中度有害,校正死亡率为55.29%;高氯、啶虫脒、哒螨灵、腈菌唑、嘧霉胺、霜脲锰锌处理的校正死亡率25%～5%;灭蝇胺、阿克泰、吡虫啉、氟硅唑、苯醚甲环唑、多菌灵、速克灵、安克、代森锰锌处理的校正死亡率则小于25%.此外,为验证药剂残留对寄生蜂的影响,调查了药后7d羽化的成蜂8h存活率,灭蝇胺处理的成蜂存活率接近90%,高氯、啶虫脒、哒螨灵、吡虫啉均在80%以上,阿维菌素为1.67%,阿克泰仅为8.33%;各杀菌剂处理药后5～7d羽化的寄生蜂8h存活率与清水对照无明显差异.

关键词: 农药, 美洲斑潜蝇, 寄生蜂, 敏感性

Abstract: Susceptibility of the field parasitoids populations of Liriomyza sativae Blanchard to 18 currently used pes2 ticides were tested by sprayed. The results showed as follows:There were some significant differences in toxicity of these insecticides to the larvae and pupae. The revised mortality of parasitoids treated by chlorpyrifos,bifenthrin were > 90 %; which of abamectin treatment was 55. 32 %;which of parasitoids treated by beta2cypermethrin,acetamiprid,pyridaben, myclobutanil,pyrimethanil Cymoxanil2mancozeb were 25 % - 45 %; Which of parasitoids treated by cyromazine,thi2 amethoxam,imidacloprid,flusilazole,difenoconazole,carbendazim,procymidone,dimethomorph,mancozeb were < 25 %; The residual toxicity of these insecticides to adults after treatment 7 days had significantly difference. The survivor of adults in 48 h by cyromazine treatment was near to 90 %. Above 80 % live adults were observed in treatment with beta2 cypermmethrin,acetamiprid,pyridaben and imidacloprid.Abamectin and thiamethoxam caused significantly higher mortali2 ty,the survivor rate was 41. 67 % and 8. 33 %,respectively. These fungicides did not produce a significant effect compared with water control.

Key words: Pesticide, Liriomyza sativae Blanchard, Parasitoid, Susceptibility

中图分类号: 

• S436.3