落叶松尺蠖(Eranhis ankeraria Standinger)是重要的落叶松食叶害虫,1983—1984年在我省围场县落叶松林中大暴发,1984年发生20多万亩,每株十七年生树上虫口高达数千头到数万头,有大片落叶松林树叶被吃光,是落叶松生产的一大威胁.1983年我们首次分离到了落叶松尺蠖核型多角体病毒(EaNPV),为了探索利用EaNPV防治落叶松尺蠖的有效方法,明确防治效果,1984—1985年,我们进行了林地防治 Larix leaf (Eranhis ankeraria Standinger) is an important larch leaf insects, 1983-1984 years in the province in the county Larch forest large outbreak occurred in 1984, more than 20 million mu of pests per tree plant height of up to a few Thousands to tens of thousands of head, a large larch tree leaves are eaten, is a major threat to the production of larches .In 1983 we first isolated the larch seedlings nuclear polyhedrosis virus (EaNPV), in order to explore the use of EaNPV control larch An effective method of scale, a clear control effect, 1984-1985, we conducted a forest land control