3种药剂对苹果红蜘蛛的防治作用研究

Control Effect of Three Pesticides to Apple Red Mite

苹果红蜘蛛(以山楂红蜘蛛为主)是苹果树上为害叶片的重要害虫,为了筛选出防效好的无公害药剂,对24%螺螨酯悬浮剂等3种农药进行了田间药效试验。结果表明,1.8%阿维菌素乳油速效性最好;24%螺螨酯悬浮剂持效性最好;50%丁醚脲悬浮剂的持效性及速效性在药后3～30 d均居中。施药时应根据红蜘蛛发生情况,选用有效药剂。

Apple red mites （ mainly aw thorn spider mites ） is an important harmful insect to the apple tree leaves in Shanxi province. To select effective nuisance free pesticides, field experiment with 24% Spirodielofen SC and 3 kind of pesticides were conducted. The result shows 1.8 % Abamectin EC is the most effective in quick, 24% Spirodiclofen SC has the best durable effect, the quick and persisent effect of 50% Diafenthiuron SC is middle in 3 d to 30 d. So we should choose the insecticide according to the actual situation.