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为了摸清信阳地区马尾松毛虫自然种群数量变化的规律,找出影响种群数量变化的关键因子,为马尾松毛虫虫情的正确测报和有效的害虫管理提供可靠的依据;我们从82年以来,运用生命表的方法,对该区马尾松毛虫的自然种群动态进行了比较系统的研究。现将结果整理如下。
In order to find out the regularity of the population variation of natural population of Dendrolimus punctatus in Xinyang area and find out the key factors that affect the population quantity change, we can provide a reliable basis for the correct report and effective pest management of Dendrolimus punctatus. From 82 years ago, Using the method of life table, the dynamics of natural populations of Dendrolimus punctatus in this area were systematically studied. The results are now organized as follows.