开展林木种苗检疫,是防止危险性病虫害通过人为活动传播,保护林业生产发展的重要措施。近年来有的省、区在这方面做了一些工作,但从全国范围看,这项工作还没有很好开展起来。随着林业生产的发展,林业科研工作的开展,以及林产品国际贸易活动的增加,林木种子、苗木、木材等调运日益频繁,危险性病虫随这些调运材料远距离传播的机会也日益 Carrying out the quarantine of forest seedlings is an important measure to prevent the spread of dangerous pests and diseases through human activities and to protect the development of forestry production. In recent years, some provinces and autonomous regions have done some work in this respect. However, from a national perspective, this work has not yet been well carried out. With the development of forestry production, the development of forestry research work and the increase of international trade activities of forest products, the transportation of tree seeds, seedlings and timber is increasingly frequent, and the risk of pests and diseases spreading with these transport materials is also growing