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我区于1958年首次在崑嵛山林场发现松干蚧,目前已蔓延到文登、海阳、莱阳等11个县(市),受害面积近万亩,严重地威胁了松树的正常生长。在毛主席革命路线的指引下,我区广大林业工人和贫下中农,为了消灭害虫,保护森林资源,因地制宜地,积极开展了防治工作。自1972年起,用氟乙酰胺涂环的方法防治了90多万亩,防治效果良好。但由于氟乙酰胺毒性大,使用不安全。为确保人畜安全和解决林业生产上的急需,1974年我们重点做了新农药的筛选、性信息激素的引诱以及瓢虫的释放、饲养和对松干蚧的抑制作用等研究工作。在工作
My area was first discovered in Kunyu Mountain Forest Farm in 1958, and now it has spread to 11 counties (cities) such as Wendeng, Haiyang and Laiyang. The area affected is nearly 10,000 mu, which seriously threatens the normal growth of pine trees. Guided by Chairman Mao’s revolutionary line, the vast majority of foresters and poor peasants in our region actively carried out prevention and control work to eliminate pests and protect forest resources and to local conditions. Since 1972, Fluoroacetamide coated ring method to prevent more than 90 million mu, control effect is good. However, due to the toxicity of fluoroacetamide, the use of unsafe. In order to ensure the safety of human beings and animals and solve the urgent need of forestry production, in 1974 we focused on screening of new pesticides, luring of sex hormones and the release of ladybugs, feeding, and the inhibition of Songkrania. working