30%乙唑螨腈悬浮剂防治苹果叶螨田间试验

Field Test of 30% Acetonitrile Suspension against Apple Spider Mites

苹果叶螨是苹果的主要害虫之一,在乳山市为害苹果的叶螨主要有山楂叶螨、苹果全爪螨和白蜘蛛(二斑叶螨)。叶螨以刺吸寄主植物嫩芽、叶片汁液为害,被害处叶正面出现黄褐色斑点,严重时拉丝结网、叶片枯焦发红脱落。通过田间试验,明确了30%乙唑螨腈悬浮剂对苹果叶螨防治效果、持效期及对作物的安全性。试验证明30%乙唑螨腈悬浮剂防治苹果叶螨持效期长、对作物安全,在生产上可以推广使用。

The apple leaf mites are the main pests of apple.In Rushan City,the main apple mites are Hawthorn leaf mite,apple claw mite and white spider（Twospotted spider mite）.The bud and leaf of the host plant was sucked and the front of the injured leaf appeared yellowish brown spots.In the serious case,the leaf turned red and dropped.Through field test,the effect of 30% of the Acetonitrile Suspension on apple leaf mites,the duration of efficacy and the safety of the crop were determined.The result showed that 30% Acetonitrile suspension had long effective period of control apple leaf mites which was safe to crops and could be popularized and used in production.