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黄斑星天牛是宝鸡地区主要蛀干害虫之一。主要分布在陇县、千阳、宝鸡、凤翔等县,而陇县受害最重。据统计,1965年以来,陇县因虫害被砍伐的树木达18万株,折合材积6千多立方米,价值36万余元,给林业生产造成很大损失。为探讨黄斑星天牛生物防治途径,1979年6月,我们从河北林专引进了青杨天牛天敌昆虫肿腿蜂,进行了繁殖利用试验。现将试验情况初步总结如下:一、肿腿蜂适应能力和发育状况
Asteroidus is one of the major pests in Baoji area. Mainly located in Longxian, Qianyang, Baoji, Fengxiang and other counties, and Longxian most affected. According to statistics, since 1965, the number of trees cut off by insects in Longxian reached 180,000, equivalent to more than 6,000 cubic meters worth of 36 million yuan, causing a great loss to forestry production. In order to explore the biological control methods of Asteraceae, in June 1979, we introduced the Cyclops beetle, a natural enemies insect from the forest of Hebei Province, and carried out the breeding and utilization test. Preliminary test situation is summarized as follows: First, swollen legs bee adaptation and development status