5种杀虫剂对可可广翅蜡蝉的毒力  

Toxicity of Five Insecticides to Ricania cacaonis

作　　者：范广玉[1] 刘学敏[2] 陈文龙[1] 秦仕华 

机构地区：[1]贵州大学昆虫研究所贵州山地农业病虫害重点实验室,贵州贵阳550025 [2]河北大学生命科学学院,河北保定071000 [3]贵州大学农学院,贵州贵阳550025

出　　处：《贵州农业科学》2014年第8期102-105,共4页Guizhou Agricultural Sciences

基　　金：贵州省科技厅农业攻关项目"茶树重要病虫害无公害防除技术研究与推广"[黔科合字NY字(2010)3024]

摘　　要：为筛选防治可可广翅蜡蝉的有效药剂,采用浸叶法于室内测定吡虫·毒死蜱、吡虫啉、啶虫脒、乐果和高效氯氟氰菊酯等杀虫剂对可可广翅蜡蝉若虫及成虫的毒力。结果表明:吡虫·毒死蜱、啶虫脒和高效氯氟氰菊酯等对可可广翅蜡蝉的若虫和成虫均表现出较高的毒力,3种药剂对若虫的LC50分别为4.800mg/L、20.978 mg/L和2.851 mg/L,对成虫的LC50分别为0.348 mg/L、2.535 mg/L和1.954mg/L;吡虫啉和乐果对其若虫和成虫的毒力均较低。可可广翅蜡蝉对杀虫剂的抗性若虫强于成虫。In order to screen out effective pesticides to control R.cacaonias,toxicity of imidacloprid-chlorpyrifos,acetamiprid, imidacloprid, dimethoate, lambda-cyhalothrin to R.cacaonias nymphs and adults were determined using leaf-dipping method in laboratory.The results indicated that imidacloprid-chlorpyrifos,acetamiprid and lambda-cyhalothrin had the higher toxicity to R.cacaonias nymphs and adults,the LC50 values to nymph were 4.800 mg/L,20.978 mg/L,2.851mg/L,and to adults were 0.348 mg/L,2.535 mg/L,1.954 mg/L respectively.But imidacloprid and dimethoate had the lower toxicity to R.cacaonias nymphs and adults.The resistance of R.cacaonias nymph to insecticides was higher than adults.

关 键 词：可可广翅蜡蝉 杀虫剂 毒力测定 LC50 

分 类 号：S482.3[农业科学—农药学]