大蓑蛾(Clania Variegata S)在我区果树上发生范围广,常暴发成灾。为指导果农正确用药,我们于1991年进行了用药种类与防治适期的试验。树种为红富士、金冠苹果,树龄5～10年生。共设4个试验点,各点均设5个处理,随机排列,每小区5株树,重复3次,供试树共300株。用药后7天检查幼虫死亡率,每小区一般调查100个左右幼虫,以4个试验点平均数 Clania Variegata S has a wide range of fruit trees in our area and is often catastrophic. In order to guide the correct use of fruit and vegetables, we conducted in 1991 the type of drug and control of the appropriate period of the test. Tree species of red Fuji, Golden Delicious apple, tree age 5 to 10 years old. A total of four test points, each set of five treatment, randomly arranged, each tree 5 trees, repeated 3 times for a total of 300 trees. Seven days after treatment, larval mortality was checked, and about 100 larvae were surveyed in each community, with an average of 4 test points