我县地处山区,山林多,大部分是松林,经常受松毛虫为害,每年受害面积少则几万亩,多则十多万亩,严重影响松林生长和松香生产。为了落实毛主席“备战、备荒、为人民”的伟大战略方针,发展林业生产,我县广大革命群众积极开展防治松毛虫的科学实验,特别是去年三月以来,大力推广白僵菌防治松毛虫的先进经验,取得一定的成绩。全县十五个公社(除蚕桑区外),都施放了白僵菌,防治面积四万多亩,松毛虫死亡率达95％以上,基本控制了松毛虫的蔓延扩展,使一些松毛虫常灾区变成无灾区。实践证明,用白僵菌防治松毛 My county is located in the mountains, mountains and forests, mostly pine forests, often affected by pine caterpillars, each affected area of ​​less than tens of thousands of acres, as many as one hundred thousand acres, seriously affecting pinewood growth and rosin production. In order to implement Chairman Mao’s great strategic guideline of “preparing for war, preparing for war and for the people,” and developing forestry production, the revolutionary masses in our county have actively carried out scientific experiments on controlling pine caterpillars. In particular, since March last year, the promotion of Beauveria bassiana to control pine caterpillars Advanced experience, and achieved some results. Fifteen communes (except sericulture area), the release of Beauveria bassiana, control area of ​​40,000 acres, pine mortality of 95% or more, the basic control of the spread of expansion of the pine caterpillars, so that some often Disaster into a disaster-stricken area. Practice has proved that the prevention and treatment of pine with Beauveria bassiana