灭幼脲Ⅲ号防治杨毒蛾幼虫试验:对其它虫态的延续作用

Experiment of using Benzoylphenal urea Ⅲ against Stilpnotia candida larvae:Its continuous effect on other stages

通过使用低于杨毒蛾 Stilpnotia candida幼虫期灭幼脲 号最佳用药量 (450 g/hm2 )的 5组防治试验 ,得出灭幼脲防治对杨毒蛾其它虫态延续作用显著 ,防治用药 1 50 g/hm2以上 ,杨毒蛾一个世代内总杀虫率可达 96%以上。

Control experiments using Benzoylphenal urea Ⅲ at dosages lower than the optimum one (450g/hm 2) against Stilpnotia candida larvae were made.The result showed that the continuous effect on the other stages of Stilpnotia candida was significant.At the dosage of 150g/hm 2,the general mortality in one generation was above 96%.