论文部分内容阅读
[目的]摸清刨花润楠的木材材性。[方法]从广西贺州市大桂山林场采集刨花润楠为试材,采用排水法测定生材体积,采用体积法及质量法测定树皮率,研究刨花润楠的生材密度、树皮率及含水率。[结果]刨花润楠的生材密度随树高增加而减小,平均值为0.789g/cm3;基本密度的径向变化随树龄增加而增大,纵向变化随树高增加,基本密度在枝下高以下缓慢减小,在枝下高以上缓慢增大,平均值为0.454 g/cm3;生材含水率,从髓心向外,北向减少,南向呈先增加后减少的趋势,并随树高增加,在枝下高以下逐渐增大,在枝下高以上变化不大,平均值为73.8%;树皮体积百分率及质量百分率均随树高增高而增加,平均值分别为12.2%和13.2%。[结论]该研究为保护、发展广西重点珍贵树种刨花润楠提供了科学依据。
[Objective] To find out the wood properties of Machilus wood. [Method] The samples of P. chinensis collected from Da Guishan Forest Farm in Hezhou City, Guangxi Province were taken as test materials. The volume of raw material was determined by drainage method. The bark rate was determined by volumetric method and mass method. The density of bark, Moisture content. [Result] The density of O. lucidum decreased with the increase of tree height, the average value was 0.789g / cm3. The radial density of basic density increased with the increase of tree height. The longitudinal variation increased with the height of tree, Under the high, it slowly decreased and slowly increased above the branch height, with an average value of 0.454 g / cm3. The moisture content of raw material decreased from the medulla to the outside and from the north to the south, then increased first and then decreased, The tree height increased, but increased gradually under the branch height, with little change over the branch height, with an average value of 73.8%. The volume percent and the percentage of the tree bark increased with the tree height increasing, with the average values of 12.2% and 13.2%. [Conclusion] The research provided the scientific basis for the protection and development of the precious wood species in Guangxi.