在“预防为主,综合防治”的方针指导下,普遍认为生物防治是松干蚧防治的一个重要途径。据有关报导和实际调查松干蚧的天敌种类很多,仅在我省也不下二十余种,可见在其开发利用上具有很大潜力。近几年来,省内、外在天敌利用方面巳逐步开展,诸如生物激素性信息技术的引进,捕食性天敌瓢虫的利用等都已初见成效。鉴于一些资料记载和材料报导,草蛉在农业方面防治棉蚜虫、棉蛉虫、红蜘蛛等效果都很显著。又据初步调查,该虫在松干蚧危害的松林中也有分布,为了扩大松干蚧生物防治门路,探求草蛉在防治松干蚧上的作用,对草蛉进行了一些饲养观察试验工作,初步总结如下: Guided by the principle of “prevention first, comprehensive prevention and control”, biological control is generally considered as an important way to prevent and cure pine cercaria. According to the reports and actual investigations, there are many kinds of natural enemies of Songkyeongwa, not more than twenty species in our province alone, showing great potential in development and utilization. In recent years, the utilization of natural enemies in the province and outside has been gradually carried out, such as the introduction of bio-hormonal information technology and the use of predatory ladybugs. In view of some data records and material reports, the effects of cotton budworm on cotton aphids, cotton insects and spider mites in agriculture are all remarkable. According to the preliminary investigation, the insect is also distributed in the pine forest which is endangered by pine and dry scales. In order to expand the biological control of the pine dry and dry scales, and explore the role of the weeds in the prevention and control of the pine dry and dry scales, some observations were made on the observation and experimental work of the weeds. The preliminary conclusions are as follows: