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松干蚧壳虫是赤松、油松和马尾松等主要害虫。在国内山东、辽宁、浙江、江苏等省相继发现,严重危害着松树生长,导致许多松林毁灭,给我国林业生产造成很大损失。在防治方面,用氟乙酰胺、杀螟松等药剂防治已有一定效果。在此基础上,怎么用生物天敌来控制防治效果,是国内尚未解决和急需解决的重要问题。在前几年对蒙古光瓢虫和异色瓢虫研究利用的基础上,为了选择比上两种瓢虫更为优越的天敌,七四年以来,我们对浙江杭州的隐斑瓢虫作了引进饲养试验。
Loose scale insects are red pine, Pinus tabulaeformis and other major pests. In Shandong, Liaoning, Zhejiang, Jiangsu and other provinces have found that serious damage to pine growth, resulting in the destruction of many pine forests, to our country forestry production caused great losses. In the prevention and treatment, with fluoroacetamide, fenitrothion and other agents have a certain effect of prevention and treatment. On this basis, how to use biological predators to control the effects of prevention and control is an important issue that has not yet been solved and is in urgent need of solution in China. A few years ago on the light of the ladybug and ladybug Mongolia research and utilization, in order to choose more than the two ladybugs superior predators, since 1974 or so, we have a hidden spot ladybird in Hangzhou, Zhejiang The introduction of feeding test.