马尾松毛虫是我国南方各省松林中的头号害虫,大发生时,有密度高、数量多、面积厂、来势凶猛的特点。解放后,为了彻底摸清它的发生规律,找出根治措施,中央及有关各省的林业研究部门,均列入为重点研究项目;特别是近几年来,由于组织了防治松毛虫这一项目的大协作,其进度和成果,大有提高。当前讨论的焦点集中于松毛虫大发生有无周期性及究竟什么是松毛虫消长的主导 Dendrolimus punctatus is the number one pest in the pine forest in the southern provinces of our country. When it happened, it had the characteristics of high density, large quantity, area plant and ferocious ferocity. After the liberation, in order to thoroughly find out its law of occurrence and identify the root causes, all the forestry research departments in the central and relevant provinces were included as key research projects. In particular, in recent years, due to the organization of the project to control pine caterpillars Great cooperation, its progress and achievements have greatly improved. The focus of the current discussion is on the periodicity of large pine caterpillars and on what is the predominance of the growth and decline of the pine caterpillars