摘要
[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] The study aimed to make sure the wood property of Machilus Paunoi Kanenira.[Method] M.Paunoi was selected from Daguishan Forestry Farm in Guazhou City of Guangxi,the green wood volume were determined by the drainage method and the bark percentage was determined by the volume method and the quality method so as to study the density,bark percentage and heartwood percentage of the green wood of M.Paunoi.[Result] The green wood density of M.Paunoi was reduced with the rising of tree height,with the average value of 0.789 g/cm3.The radial change of the basic density was increased with the increasing tree age.As for the longitudinal change,with the rising of the tree height,the basic density was reduced gradually before the first living branch and was increased gradually,with the average value of 0.454 g/cm3.The moisture content of green wood showed a decreasing trend in the north orientation from the pith to the sapwood and had a trend of first increasing and then decreasing in the south orientation;with the rising of the tree height,the moisture content was increased gradually before the first living branch and had little change after that,with the average value of 73.8%.The bark volume percentage and bark quality percentage were increased with the rising of the tree height,with the average value of 12.2% and 13.2% resp.[Conclusion] This study provided the scientific basis for the protection of main precious tree species in Guangxi and the development of M.Paunoi.
出处
《安徽农业科学》
CAS
北大核心
2011年第9期5278-5280,5296,共4页
Journal of Anhui Agricultural Sciences
基金
广西自然科学基金重点项目(2010GXNSFD013024)
关键词
刨花润楠
密度
树皮率
生材含水率
Machilus Paunoi Kanenira
Density
Bark percentage
Moisture content of green wood
作者简介
樊吉尤（1973-），男，广西马山人，工程师，从事林业管理研究。
通讯作者，副教授，博士，从事木材材性及其功能改良研究，E—mail：fylin@126．com
