四种杀虫剂对棉蚜药效试验的初报

Toxicity of four insecticides to Aphis gossypii.

采用浸渍法 ,室内测定了 4种杀虫剂对越冬寄主木槿上棉蚜的毒力 ,这几种药剂的防治效果均良好 ,其毒力 (LC50 )为阿维菌素 >吡虫啉 >甲氰菊酯 >氰戊菊酯。

The toxicity of four pesticides to Aphis gossypii Glover in Hibiscus syriacus L. was measured in the laboratory using the immersion method. The results indicate that these pesticides are highly effective in controlling this pest.The relative order of toxicity of the pesticides tested was as follows: abamectin> imidacloprid>fenpropathrin>fenvalerate.We recommend that A. gossypii should be controlled on overwindering host.