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大袋蛾(Cryptothelea voriegata Snellen)在菏泽地区危害泡桐逐年严重,1984年仅农桐间作受灾面积即达100多万亩。加上数万亩丰产林和四旁所植泡桐计有600多万株。泡桐受害而影响材积生长损失价值可达3600万元。为了迅速控制该虫蔓延危害,急需探索简便易行的防治办法。我们于1983—1984年采用几种内吸剂做了干基打孔注药防治试验,取得了较好的效果,现介绍如下:
The Cryptothelea voriegata Snellen harms paulownia in Heze area year by year. In 1984, the area affected by intercropping capercaolus alone was over 1 million mu. Plus tens of thousands of acres of high yield forest and Paulownia planted around more than 600 million strains. Paulownia affected volume growth loss worth up to 36 million yuan. In order to quickly control the spread of the insects, the urgent need to explore a simple and easy way of prevention and treatment. We used several kinds of APIs in 1983-1984 to make dry-based perforating injection prevention and control experiments and achieved good results. The introduction is as follows: