1.6%狼毒素水乳剂及其复配剂对豌豆蚜的室内毒力测定

Toxicity of Ochamaejasmin 1.6% EW and Its Mixuere with Three Kinds of Bactericides Against Acyrthosiphon Pisum

为明确狼毒制剂及其复配剂对豌豆蚜的触杀效果,采用点滴法,测定了70%吡虫啉水分散粒剂、40%乐果乳油、1.8%阿维菌素乳油、1.6%狼毒素水乳剂4种单剂以及狼毒素与其他3种药剂的复配剂对豌豆蚜成蚜的杀虫活性。结果表明,供试药剂中,70%吡虫啉水分散粒剂的触杀效果最好,1.6%狼毒素水乳剂的触杀效果最差。在1.6%狼毒素水乳剂与3种药剂的复配剂对豌豆蚜的触杀效果明显比单一药剂的触杀效果好。随着复配药剂浓度比的增大,3种复配剂的联合毒力对豌豆蚜的触杀效果均呈逐渐增强的趋势。

In order to clear the toxicity of ochamaejasmin 1.6%EW and its mixed with three kinds of bactericides against Acyrthosiphon pisum,the toxicity tests were carried out.A single drug test showed that the toxicity of 70%imidacloprid was the best,the toxicity of ochamaejasmin 1.6%EW was the worst.In experiments of ochamaejasmin 1.6%EW mixed with three kinds of bactericides,the results showed that the toxicity of mixed preparations were better than single one.With the increase of the mixed reagent concentration,three kinds of complex dispensing joint toxicity enhanced.