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赤松毛虫(Dendrolimus spectabilisButler)在我省沿海及燕山油松林区,每年发生面积达几十万亩,历年来多采用化学农药喷雾进行防治。由于化学防治破坏生态平衡,污染环境,杀伤天敌,害虫产生耐药性等弊端,近年来,国内开始探讨综合治理的措施控制害虫为害。为了制订一套适合我省燕山林区的赤松毛虫综合治理措施,有必要详细了解自然界中天敌对赤松毛虫种群的控制作用。我们于1984、1985两年在抚宁县,对不同类型林分中天敌对赤松毛虫的寄生和捕食情况进行了初步调查,现总结如下。
Dendrolimus spectabilis Butler (Dendrolimus spectabilisButler) in the coastal areas of our province and Yanshan pine forest area, each year an area of hundreds of thousands of acres, over the years the use of chemical pesticide spray prevention and treatment. In recent years, due to the chemical control and destruction of ecological balance, environmental pollution, natural enemies, resistance to pests and other malpractice, in recent years, the domestic began to explore measures to control integrated pest damage. In order to develop a set of comprehensive management measures for Cinnamon caterpillar, suitable for our province Yanshan forest area, it is necessary to understand in detail the control effect of natural enemies on the population of Ciliate dendrolimus in nature. In 1984 and 1985, in Funing County, we conducted a preliminary investigation on parasitism and predation of Dendrolimus spectabilis in different types of stands, and are summarized as follows.