落叶松毛虫是落叶松人工林的主要害虫,其种群消长多受各虫态众多天敌的制约,特别是松毛虫卵,最易遭受天敌侵袭。通过近几年调查研究发现,卵期寄生天敌对松毛虫种群影响最大,往往使90%以上的卵不能孵化。在10多种卵期寄生天敌中,前期以松毛虫黑卵蜂为主,寄生率高达34.4%;中期以宽缘金小蜂为多,寄生率达40%以上;后期各种天敌共、过寄生现象普遍发生,因此,搞好松毛虫卵期寄 Larix caterpillar is the main pests of Larix gmelinii plantation, its population growth and more restricted by the many natural enemies of various insect states, especially pine caterpillar eggs, the most vulnerable to natural enemies. Through the investigation and study in recent years, it has been found that parasitoid natural enemies of eggs have the greatest impact on the population of pine caterpillars, often making it impossible for more than 90% of the eggs to hatch. In more than 10 kinds of parasitoid natural enemies of eggs, the predominate was Dendrolimus black oyster, the parasitism rate was as high as 34.4%; in the medium-term, the golden bee was more, the parasitism rate was over 40%; Parasitism occurs generally, therefore, do pine caterpillar egg period to send