草履蚧大龄若虫防治方法研究

Studies on the Prevention Methods of Elder Nymph of Drosicha corpulenta

采用6种杀虫剂对草履蚧大龄若虫进行田间防治试验,筛选出40%久效磷乳油、40%氧化乐果乳油原液涂干、25%扑虱灵可湿性粉剂1000倍液树干和树冠喷雾及3%呋喃丹颗粒剂150g/株根施杀虫效果明显。四者药后7d校正防效分别达95.0%,92.9%,76.0%和61.6%。

Six pesticides were used to prevent the elder nymph of Drosicha corpulenta in a experiment, from which 40% raw omethoate dau and trunk,and 150 g of four bing effective methods were confirmed, including 40% monocrotop field hos, the trunk, 1000-fold of 25% buprofezin WP spraying the crown 3% carbofuran particles fertilizering the roots of each tree. Their rectifying efficacies were 95.0%, 92.9%, 76.0% and 61.6% respectively after 7 days of application.