近几年来，天牛等蛀干害虫在三峡库区杉木、松树、柏木、经济林木林区的危害面积不断蔓延扩大，危害程度越来越重，对库区已有和正在发展的用材林、防护林、经济林是一个潜在的威胁，至今尚无既无公害，又能有效控制灾害的防治措施。１９９４年我们在长江上游泸县林场粗鞘... In recent years, the harmful insect pests, such as beetles and other pests, have been spreading and expanding in the areas of fir, pine, cypress and economic forest in the Three Gorges Reservoir area, and they are more and more harmful. For existing and developing timber forest and shelterbelts in the reservoir area, , Economic forest is a potential threat, so far no pollution control, but also effectively control the disaster prevention and control measures. In 1994 we in the upper reaches of the Yangtze River Forest Farm thick sheath ...