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松毛虫在我国10种森林病虫害排名之首,其危害性较大,全国每年发生面积达2000—4000万亩,重者松叶吃光,树木枯死,造成大面积森林被毁。为了彻底防治松毛虫,国内各级科研机构与防治单位进行了大量的试验示范,获得了很多科研成果和防治松毛虫方法,国家林业局制定了《国家级森林病
Dendrolimus ranked first in China’s 10 kinds of forest pests and diseases, its harmfulness, the annual area of up to 2000-4000 acres, the heavy cedar eaten, dead trees, causing a large area of forest destroyed. In order to thoroughly prevent and control pine caterpillars, a large number of experimental and demonstration projects have been conducted by scientific research institutes and prevention and treatment units at various levels in China, and many scientific research achievements and methods for prevention and control of pine caterpillars have been obtained. The State Forestry Administration has formulated the "National Forest Disease