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双条杉天牛是我省主要用材树种——杉木的蛀干性大害虫,活动隐蔽,危害性大,不易防治,常使整株杉木枯死。一九七零和一九七二年曾进行过敌百虫、DDT等六种常用农药,采用打针注射,割皮涂茎,毛刷涂干,喷射树干等方法的毒杀试验。今年全国农药大田试验示范会议时分配我所五种新杀虫农药,于七、八月份进行毒杀双条杉天牛幼虫的防治试验,取得较好效果。现将试验的初步结果小结如下:
Double cedar Tianxian is the main timber species in our province - Chinese moth dry big pests, hidden activities, harmful, difficult to control, often make whole plant dead. In 1970 and 1972, there were six commonly used pesticides such as trichlorfon and DDT. The poisoning test was carried out by injection, skin pruning, hair brushing and trunk spraying. In this year’s National Pesticide Field Experiment Demonstration Conference, I will allocate five new insecticide pesticides in our country and carry out the prevention and control test of poisoning the larvae of Cunninghamia lanceolata in July and August with good results. The preliminary results of the experiment are summarized as follows: