窄冠黑杨窄冠黑白杨的选育(II)木材性质的研究  

Breeding of Narrow Crown Black Poplar and Narrow Crown Black-white Poplar (Ⅱ) Study of timber character

作　　者：刘国兴[1] 李际红[1] 张友朋[1] 庞金宣[1] 孙埠 李金岭 姜维国 李富恩 周保林 韩荣廷 

机构地区：[1]山东农业大学科技学院,泰安271000 [2]莒县林业局 [3]东明县林业局

出　　处：《山东林业科技》2003年第5期7-10,共4页Journal of Shandong Forestry Science and Technology

摘　　要：研究证明所育成的窄冠黑杨、窄冠黑白杨心材的比例小 ,颜色浅 ,有利于提高制浆的白度 ,木材的基本密度随树高而增大 ,木材纤维长度与树高的关系不大 ,但随年龄的增大而增长 ,纤维长度 5年生时基本稳定 ,可达 1mm。因此 ,为提高制浆质量 ,以 5年生以上采伐利用为好 ,为提高树木的经济价值 ,最好 10年生采伐利用 ,4m以下做胶合板材 ,4m以上制浆造纸。In our study, it is proved that the heart wood proportionment of narrow crown black poplars and narrow crown black-white poplar is small, which makes for improving pulp brightness. Wood basic density of all the narrow crown black poplars is higher at the high portion of stem than at the lower portion. The lumber fiber length, which can get to 1 mm, continues increasing until the tree get to 5 years old, while it has nothing to do with the stem height. Thinking of pump quality, we should not cut trees before the trees get 5 years old. To get the max economic efficiency, we had better cut trees at the age of 10, and make plywood with the stem portion under 4 m, while make paper pump with the upside stem above 4m.n

关 键 词：窄冠黑杨 窄冠黑白杨 木材基本密度 杂交育种 

分 类 号：S722.34[农业科学—林木遗传育种]