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松干蚧、松毛虫是我省松林的两大害虫。为了有效地保护森林资源,控制“两虫”的蔓延为害,寻求“两虫”的综合防淄方法,在1974年明确应用久效磷涂环防治松干蚧有效的基础上,近两年来,以昆嵛山林场和文登县界石公社社办林场为基点,组织烟台地区10个场、队,广泛地开展了群众性的科学实验,先后选用新农药18种,应用施药方法6种,反复试验150余次,寻求出应用久效磷一次涂环兼治松干蚧、松毛虫的新方
Song Kuwana, pine caterpillars are the two major pests pine forests. In order to effectively protect forest resources, control the spread of “two worms” and seek a comprehensive “method of preventing insects and insects” by using “two insects”, on the basis of the effective application of monocrotophos in 1974 to prevent and cure pine calamus, in the past two years, Yingshan Forest Farm and community community Shingon community run forest farm as the starting point, Yantai area 10 field teams were organized to carry out mass scientific experiments, has selected 18 kinds of new pesticides, the application of pesticides 6, 150 repeated trials Yu times, to find a long-term application of monocrotophos ring tussock, pine caterpillar new side