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日本松干蚧Matsucoccus matsumurae Kuwana在我国山东、辽宁、江苏和浙江等地危害松树枝干,严重时使整株枯死,甚至成片松林被摧毁;但也有些林分虽然虫口数量不少,而幸免毁灭。其原因除了地形、植被、土壤以及抚育管理等因子外,一个重要原因是由于在该林分中生存着较多种类及数量的捕食性昆虫、螨类以及病原微生物,它们是日本松干蚧的重要天敌。由于松林环境维持自然生态平衡,在一定程度上,使松干蚧对松树危害所造成的损失在经济阈值以下,因此,这些天敌对日本松干蚧的抑制作用就不可忽视。本文就几年来对江苏地区日本松干蚧重要天敌的研究作一小结。
In Japan, Matsucoccus matsumurae Kuwana endangered the branches of pine in Shandong, Liaoning, Jiangsu and Zhejiang provinces. In severe cases, the whole plant died and even the pine forest was destroyed. However, some forests were spared the destruction despite the large number of insects. The reason for this is that besides the factors of topography, vegetation, soil and tending and management, one of the important reasons is that many species and numbers of predatory insects, mites and pathogenic microorganisms exist in this forest and they are important natural enemies of Japanese pine and scrap . As the pine forest environment to maintain the natural ecological balance, to a certain extent, so that the damage caused by pine c on pine damage in the economy below the threshold, therefore, these natural enemies of Japan pine dry scale can not be ignored. In this paper, we summarize the researches on important natural enemies of Japanese pine and dry scale in Jiangsu Province in recent years.