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海城市现有15万亩天然次生油松林,上代松林由于松毛虫、松干蚧的严重危害和人为的破坏活动,已经所剩无几。为有效地控制虫灾,确保松林正常生长,我们于1981—1985年,以王石乡中沟村的4,000亩集体所有异龄油松天然次生林为试验基地,进行了松毛虫综合治理的试验研究。这次试验的重点放在:掌握虫情动态,了解发生规律;通过封山育林、抚育管理和林地补植等林业措施,保护和改善松林生态环境,充分利用自然控制因素抑制虫害;只有在害虫数量达到一定程度时,才采用相应的防治措施,
There are only 150,000 mu of secondary natural Pinus tabulaeformis forest in Haicheng City, and there is not much left over in the previous generation due to the serious damage and man-made sabotage activities of pine caterpillars and pine dry scales. In order to effectively control pests and ensure the normal growth of pine forests, we conducted a pilot study on the comprehensive management of pine caterpillars in 4,000 mu of collective secondary natural forests of Pinus tabulaeformis in Zhonggou Village, Wang Shixiang, China from 1981 to 1985. The focus of this trial was on: grasping the dynamics of insects, understanding the rules of occurrence; protecting and improving the ecological environment of pine forests through closed-cut afforestation, tending management and replanting of forest land to make full use of natural control factors to suppress pests; and only when the number of pests reached To a certain extent, only use the appropriate prevention and treatment measures,