蓝桉、直干桉地下害虫防治药剂的筛选

Insecticides Screening for Control Subterranean Pest of Eucalyptus globulus and E.maidenii

经采用对比法和随机区组设计，通过比较不同药剂种类，不同施药方法和不同剂量的防治效果。筛选出较好的防治药剂为３％呋喃丹颗粒剂、２．５％高丙体粉剂和３％溴氰菊酯粉剂。定植时，每塘施用６—８ｇ。筛选出的防治药剂经试验示范林应用，幼林保存率达９２一９８％。林内虫害死亡率＜５％。

According to compare different kinds of insecticides,using different method anddosage,with the method of comparison and randomized block design,the best insecticide tocontrol pest is 3% of carbofuran and 2.5% of BHC ect.has been chosen, The experiment re-sult shows in demostration forest,the suvival of seedlings is 92%～98%,the death rate ofsubterranean nest is<5% in forest。