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近年来,大袋蛾(Clania Variegata Snellen)在安徽、河南、山东等泡桐产区危害日趋严重,直接威胁林木的生长与生存。据调查阜阳地区70万亩泡桐林,八十年代年受害面积达80%以上,每年投入的防治经费达百万元。各地在大袋蛾防治中进行多种试验,其中以根部注射久效磷防治大袋蛾效果最好,杀虫率达90%以上,而且方法简便,对人畜无害,不污染环境。但在实际操作中,其用药量难以准
In recent years, Clania Variegata Snellen has become more and more serious in the areas of Paulownia producing areas such as Anhui, Henan and Shandong, which directly threaten the growth and survival of trees. According to a survey of 700,000 mu of paulownia forest in Fuyang area, the area affected by the disease in the 1980s reached more than 80%, and the annual prevention and treatment expenses invested in the project amounted to one million yuan. Various tests have been carried out in the control of the big-bagged moths. Among them, the prevention and treatment of the big-bagged moth with the root of the monocrotophos is the best, with the insecticidal rate reaching more than 90%. The method is simple, harmless to humans and animals and does not pollute the environment. However, in practice, its dosage is difficult to prospective