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杨树具有生长快,产量高,用途广,培育周期短的特点,在世界上一些缺林国家,都把营造杨树人工林做为解决木材不足的重要措施。我省森林采伐事业随着社会主义建设对木材日益增长的需要,每年要出现新采伐迹地达××万亩以上。在天然森林资源日趋减少的情况下,在采伐迹地上有计划发展杨树速生用材林,对加速迹地更新,快速培育后备森林资源,保持青山常在,永续利用,实现以场定居,以场轮伐具有重大的意义。近年来,我所对长白山林区乡土树种火青杨、香杨做了初步调查,并从1974年开始,与
Poplar has the characteristics of fast growth, high yield, wide range of uses and short cultivation period. Some poplar plantations in the world regard the construction of poplar plantations as an important measure to solve the problem of insufficient timber. Deforestation in our province With the increasing need for timber for the socialist construction, new deforested land amounts to more than × 10,000 mu each year. With the reduction of natural forest resources, there are plans to develop poplar timber for deforestation, to update the accelerated trail, to rapidly cultivate reserve forest resources, to maintain the evergreen and sustainable use of trees, Cutting has great significance. In recent years, I made a preliminary investigation of native tree species of Populus euphratica and Poplar in the Changbai Mountain forest area. Since 1974,