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遵循毛主席“在生产斗争和科学实验范围内,人类总是不断发展的,自然界也总是不断发展的,永远不会停止在一个水平上。因此,人类总得不断地总结经验,有所发现,有所发明,有所创造,有所前进”的教导,根据当前林业生产上存在的技术关键问题,我们继利用赤眼蜂防治松毛虫之后,1971年又在风沙干旱较严重的西部地区与白城地区森林病虫害防治站、镇查县大岗机械林场一起利用赤眼蜂防治杨树三种主要食叶害虫——双尾天社蛾,拟小
In accordance with Chairman Mao’s “In the struggle for production and within the scope of scientific experiments, mankind always develops continuously, and the nature always develops constantly and never stops at a level. Therefore, mankind always has to sum up his experience and make some discoveries, Invented, created, advanced ”. According to the current technical problems in forestry production, following the prevention and control of Trichinella spiralis by Trichogramma, in 1971, in the western region where Baisha Regional Forest Disease and Pest Control Station, Zhencha Dagang Machinery Forest Farm Trichogramma together with the prevention and treatment of poplar three kinds of leaf-eating pests -