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美洲斑潜蝇寄生蜂对设施蔬菜常用农药的敏感性评价

DOI: 10.7668/hbnxb.2009.03.018, PP. 83-86

Keywords: 农药,美洲斑潜蝇,寄生蜂,敏感性

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Abstract:

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.

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