东北地区是国家重点林区之一,又是我国最大的木材生产基地。搞好林木良种化,对东北地区林业现代化建设具有十分重要的意义。几年来,东北地区林木良种化的工作,有了较快的进展,已经有计划、有步骤地设立了一批人工母树林、采穗园和种子园。早期设立的人工母树林和种子园已陆续结实。去年黑龙江省大面积的落叶松、樟子松人工母树林种喜获丰收。为全省育苗、造林提供了大量的品质优良的种子,基本扭转了过去靠天然林远征采种或由外省盲目引种所造成的品种混杂质量低劣的局面。事实说明,东北一些地区在林木良种化的道路上,已经迈出了可喜的一步,积累了一些经验,为今后更好地开展林木良种化工作奠定了初步的基础。但是,由于这项工作在林业建设上还是新的,在我国特别是北方,良种化的工作起步较晚,经验还不多,因此,在生产实践中, Northeast China is one of the key national forest areas and the largest timber production base in China. Doing a good job of planting trees is of great significance to the modernization of the forestry in Northeast China. In recent years, there has been a rapid progress in the forestation of trees in northeast China. A number of artificial parent trees, scion parks and seed gardens have been established in a planned and step-by-step manner. The early establishment of artificial mother woods and seed gardens have gradually solidified. Last year, a large area of ​​Heilongjiang Province larch, Pinus sylvestris plantation mother tree harvest. For the province’s nursery, afforestation provides a large number of high-quality seeds, the basic reverse the past by natural forest expedition or blind introduction by other provinces caused by the poor quality of mixed species mixed situation. Facts have shown that some areas in northeast China have taken a gratifying step toward improving the forestation of trees and have accumulated some experience and laid the initial foundation for better forest tree improvement in the future. However, since this work is still new in the forestry construction, the work of improving the planting has started late and the experience is scarce in our country, especially in the north. Therefore, in the production practice,