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应用赤眼蜂防治林木虫害,已成为当前林木害虫防治工作中的一项重要措施。为了探索赤眼蜂在我场林地的防治效果,我场从1972年以来开展了应用赤眼蜂防治二尾舟蛾、柳天蛾等食叶性害虫的试验。二尾舟蛾 (双尾天社蛾)、柳天蛾等曾于1972年在我场莲花山作业站林地大发生,虫口密度最高者达125条(粒)/株,将80垧杨树人工林叶子全部食光(据72年7月调查),而后逐年蔓延遍及该站全林区,严重的危害杨树人工林的生长。为了防止其蔓延和发展,曾对其生活
The application of Trichogramma to prevent and control forest pests has become an important measure in the current pest management. In order to explore the effect of Trichogramma on the control of forest field in our country, our field has carried out the experiment of applying Trichogramma apatosae to leaf-eating pests such as two-tailed moth, Two-tailed boat moth (two-tailed day social moth), Liu Tian moth, etc. were in 1972 in my field Lotus Hill operation station occurred in woodland, the highest population density of 125 (grain) / strain, 80 垧 poplar artificial Lin Yezai all food (according to July 72 survey), and then spread throughout the station throughout the year all over the forest, seriously jeopardizing the growth of poplar plantations. In order to prevent its spread and development, had its life