8种杀虫(螨)剂对橡胶六点始叶螨的室内毒力测定  

Determination of Toxicities of 8 Insecticides to Eotetranychus sexmaculatus Riley

作　　者：郝慧华[1] 王鸿宾[2] 李培征[1] 程立生[3] 

机构地区：[1]海南大学环境与植物保护学院,海南儋州571737 [2]河南农业大学植物保护学院,河南郑州450002 [3]海南大学教务处,海南海口570228

出　　处：《热带农业科学》2009年第3期1-3,共3页Chinese Journal of Tropical Agriculture

基　　金：科技部"十一五"国家科技支撑计划课题;海南大学科技基金项目(No.Rnd0613)

摘　　要：采用玻片浸渍法,测定8种杀虫剂对海南白沙及东方两地的橡胶六点始叶螨(Eotetranychus sexmaculatus Riley.)♀成螨的室内毒力。结果表明:1.8%阿维菌素对白沙及东方两地的♀成螨毒力均最高,LC50值分别为0.09、0.08mg/L;其次为10%溴虫腈和2.5%高效氯氟氰菊酯,LC50值分别为15.48、10.15mg/L和431.90、350.07mg/L,8种药剂对该螨雌成螨的毒力大小顺序均为阿维菌素、溴虫腈、高效氯氟氰菊酯、毒死蜱、哒螨灵、甲氰菊酯、三唑锡与克螨特。与敏感种群相比,白沙、东方两地六点始叶螨对克螨特、毒死蜱、甲氰菊酯、哒螨灵与三唑锡均已产生较高抗药性。Eight insecticides to the six-spotted mite （Eotetranychus sexmaculatus Riley）♀ from Baisha County and Dongfang City in Hainan Province were tested in terms of toxicity by means of slide glass immersion. The results showed that the 1.8% Abamectin had the highest toxicity to E. sexmaculatus in the two locations with LC50 value being 0.07 mg/L and 0.08 mg/L respectively, followed by 20% Chlorfenapyr （LC50 value： 15.48 mg/L, 10.15 mg/L） and 2.5% Lambda-cyhalothrin （LC50 value： 431.90 mg/L, 350.07 mg/L）. The six-spotted mite ♀ had already produced higher resistance to the rest 5 insecticides （Propargite, Chlorpyrifos, Fenpropathrin, Pyridaben, Azocyclotin） in the two locations.

关 键 词：六点始叶螨 杀虫(螨)剂 毒力测定 

分 类 号：S433.7[农业科学—农业昆虫与害虫防治]