作　　者： ; ; ;

机构地区： 仲恺农业工程学院农学院植保系

出　　处： 《长江蔬菜》 2010年第2期68-70,共3页

摘　　要： 采用浸叶法测试了虫螨腈、氯虫苯甲酰胺、埃玛菌素、丁醚脲、阿维菌素、氟虫腈6种药剂对小菜蛾3龄幼虫的室内毒力。结果表明,处理后24h,埃玛菌素的毒力最高,丁醚脲的毒力最小,其LC50值分别为22.21mg/L和996.17mg/L;处理后48h,埃玛菌素和氯虫苯甲酰胺的毒力最高,丁醚脲的毒力最小,其LC50值分别为13.08mg/L,13.90mg/L和244.57mg/L;处理后72h,氯虫苯甲酰胺和埃玛菌素毒力最高,丁醚脲的毒力最小,其LC50值分别为4.77mg/L,8.59mg/L和135.94mg/L。 The toxicities of Chlorfenapyr, Chlorine insects benzamide, Emma streptozotocin, Diafenthiuron, Abamectin and Fipronil to 3 instar larvae of Plutella xylostella were tested by leaf-dipping method. The results indicated that Emma streptozotoein activity was the highest after 24 h with the LC50 of 22.21 mg/L. Diafenthiuron activity was the lowest with the LC50 of 996.17 mg/L. The most toxic insecticides were Emma streptozotocin and Chlorine insects benzamide after 48 h with the LC50 of 13.08 mg/L and 13.90 mg/L, the minimal toxicity insectieide was Diafenthiuron with the LCso of 244.57 mg/L. The most toxic insecticides were Chlorine insects benzamide and Emma streptozotocin with the LC50 of 4.77 mg/L and 8.59 mg/L, the minimal toxicity insecticide was Diafenthiuron with the LC50 of 135.94 mg/L after 72 h.

关 键 词： 小菜蛾 杀虫剂 毒力测定

领　　域： [农业科学] [农业科学] [农业科学] [农业科学]