松毛虫是松树的大害虫,据我国过去记载,已有三、四百年的历史。危害轻的,影响林木生长,重的,造成大片松林死亡。解放后,在党政领导重视下,开展了大面积治虫运动,取得了很大的成绩。过去由于对虫情掌握不够,往往产生防治不及时的缺点。为了进一步贯彻“治早、治小、治了”的方针,特制定本办法,供各地研究试行,并在工作中不断修正和补充。 Pine caterpillar is a large pine pests, according to our past records, there are three or four hundred years of history. Harmful light, affecting the growth of trees, heavy, resulting in the death of a large pine forest. After the liberation, under the great attention of party and government leaders, a large-scale pest control campaign was launched and great achievements have been made. In the past due to lack of mastery of insects, often have the shortcomings of prevention and treatment is not timely. In order to further implement the principle of “treating early, treating small and treating the poor”, we have formulated this approach for the study and trial of all localities and constantly revised and supplemented them at work.