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松干蚧(Matsucoccus.matsumaraeku Wana)是我省赤松林的毁灭性害虫。该虫虫体微小,初发生时往往不易发现,当林木严重被害时多已失去防治良机。多年来,生产单位注意加强营林,改善森林环境,提高森林抗性,促进生态平衡,对于防止松干蚧猖獗发生已获得一定的成效,我们1981年于山东半岛地区的林场进行了初步调查。现将调查结果介绍如下。通过初步调查看出,目前实行的林分改建,营造混交林,林木修枝,扶育间伐、引
Matsucoccus.matsumaraeku Wana is a devastating pest in the red pine forests of our province. The insect body is tiny, often not easy to find the beginning, when the tree was severely victimized and lost control. Over the years, the production units have paid attention to strengthening the forest management, improving the forest environment, improving the forest resistance and promoting the ecological balance. Some achievements have been made to prevent the rampant occurrence of the tropical chondrus pubescups. We conducted a preliminary investigation in the forest farms in Shandong Peninsula in 1981. Now the survey results are as follows. Through the preliminary investigation, we can see that the current rebuilding of the stands has created a mixed forest, tree pruning,