松毛虫是松林的大敌,俗有“不冒烟的森林火灾”之称。1961年阜新地区首先在周家店林场发生,1965年在章古台地区也有发现。二十年来,随着松林面积逐年扩大和幼林的成长,松毛虫亦不断发展蔓延,为害日趋严重。尤其是1979年秋,针叶被害90％以上的松林面积达8万多亩,其中近2干亩松林死亡。分布在阜新地区的松毛虫有油松毛虫、赤松毛虫和落叶松毛虫三种,同时还有油松毛虫和赤松毛虫的自然杂交种。凡有松毛虫 Pine caterpillar is the enemy of the pine forest, vulgar “forest fire does not smoke,” said. In 1961 Fuxin area first occurred in Zhoujiadian forest farm, in 1965 in Zhanggu area also found. In the past two decades, with the expansion of pine forests and the growth of young forests year after year, the development and spread of pine caterpillars have also continued to worsen. In particular, in the autumn of 1979, more than 90% of the coniferous forests were planted with more than 80,000 mu of pine needles, of which nearly 2 mu of pine forests died. Pine caterpillars distributed in Fuxin area have three kinds of pine caterpillars, dendrolimus caterpillar and dendrolimus caterpillars, as well as natural hybrids of Dendrolimus tabulaeformis and Dendrolimus punctatus. Where there are pine caterpillars