摘要
采用浸渍法测定了4种氯代烟碱类杀虫剂在不同温度下对梨黄粉蚜的室内毒力。结果表明:20℃时,吡虫啉的LC50为6.412 1 mg/L,触杀毒力明显高于啶虫脒、阿克泰、F4;25℃,30℃时啶虫脒的LC50值分别为2.828 1 mg/L,1.549 5 mg/L,触杀毒力明显高于吡虫啉、阿克泰、F4。同一温度下4种药剂的毒力测定结果表明:F4、吡虫啉、啶虫脒、阿克泰均在30℃时表现高的触杀毒力,其LC50分别为10.036 9,2.368 6,1.549 5,9.255 5 mg/L,温度对4种药剂对梨黄粉蚜的毒力有明显影响。
The toxicity of four insecticides to Aphanostigma jakusuiensis was tested with the dip method . The resuits showed that when the temperature was 20 ℃, the LCs0 value of imidacloprid was 6.412 1 mg/L, the contact toxicity was obviously higher than any of acetaniprid, thiamethoxam and F4 EC, when the temperature was 25 ℃ and 30 ℃, the LC50 of acetaniprid were 2. 828 1 mg/L and 1. 549 5 mg/L respectively, the contact toxicity was the highest of the four insecticides . The experiment of four insecticides at the same temperature showed that when the temperature was 30 ℃, the contact toxicity of all the four insecticides was the highest, the LC50 were 10.036 9, 2.368 6, 1.549 5and 9.255 5 mg/L respetively, the temperature influenced their toxicity to Aphanostigma jakusuiensis.
出处
《华北农学报》
CSCD
北大核心
2006年第B10期144-146,共3页
Acta Agriculturae Boreali-Sinica
基金
河北农业大学博士基金
关键词
杀虫剂
梨黄粉蚜
温度
毒力测定
Insecticicides
Aphanostigma jakusuiensis
Temperature
Toxicity
