杀虫剂对小菜蛾幼虫的毒力研究  

Toxicity of Several Insecticides to Plutella xylostella L.

作　　者：梁延坡[1] 谢圣华[1] 林珠凤[1] 吉训聪[1] 黎洪 

机构地区：[1]海南省农业科学院农业环境与植物保护研究所,海南海口571100

出　　处：《热带农业科学》2010年第7期24-26,34,共4页Chinese Journal of Tropical Agriculture

基　　金：公益性行业(农业)科研专项(200803001);国家科技支撑计划课题(2007BAD48B07-02)

摘　　要：采用浸叶法测定10种杀虫剂对海南省海口、三亚、儋州小菜蛾田间种群的毒力。结果表明:10种药剂对海口地区小菜蛾3龄幼虫的毒力LC50大小顺序为:Bt>氟啶脲>多杀菌素>茚虫威>虫螨腈>阿维菌素>丁醚脲>虫酰肼>杀螟丹>高效氯氰菊酯;三亚地区小菜蛾3龄幼虫的毒力LC50大小顺序为:Bt>多杀菌素>氟啶脲>茚虫威>虫螨腈>阿维菌素>虫酰肼>丁醚脲>杀螟丹>高效氯氰菊酯;儋州地区小菜蛾3龄幼虫的毒力LC50大小顺序为:Bt>多杀菌素>茚虫威>氟啶脲>虫螨腈>阿维菌素>丁醚脲>虫酰肼>杀螟丹>高效氯氰菊酯。3个地区对Bt和多杀菌素均表现敏感,海口地区小菜蛾种群除对高效氯氰菊酯、杀螟丹和Bt外,对其他药剂的敏感性均比三亚种群和儋州种群敏感。The toxicities of 10 insecticides to the 3 instar larvae of Plutella xylostella collected from Haikou, Sanya and Danzhou of Hainan Province were tested by leaf-dipping method. The result indicated that the orders of toxicity （LC50） to Plutella xylostella collected from Haikou were Bt 〉 chlorfluazuron〉 spinosad 〉indoxacarb 〉 chlorfenapyr 〉 abamectin 〉 diafenthiuron 〉tebufenozide 〉 Cartap 〉 Beta cypermethrin. The orders to Plutella xylostella collected from Sanya were Bt 〉spinosad 〉 chlorfluazuron 〉indoxacarb 〉 chlorfenapyr 〉 abamectin 〉 tebufenozide 〉 diafenthiuron 〉 Cartap 〉 Beta cypermethrin. The orders to Plutella xylostella collected from Danzhou were Bt 〉 spinosad 〉 indoxacarb 〉 chlorfluazuron 〉 chlorfenapyr 〉 abamectin 〉 diafenthiuron 〉 tebufenozide 〉 Cartap 〉 Beta cypermethrin. They were all sensitive to Bt and spinosad, Haikou population was more sensitive than Sanya and Danzhou, expect the insecticides of Beta cypermethrin, Cartap and Bt.

关 键 词：杀虫剂 小菜蛾 毒力测定 

分 类 号：S436.3[农业科学—农业昆虫与害虫防治]