不同树龄西南桦木材物理力学性质株内变异研究  

Study on Variation Within Different Trees Ages of Wood Physical Properties of Betula alnoides

作　　者：孙庆丰[1] 陈太安[1] 王昌命[1] 

机构地区：[1]西南林学院木质科学与装饰工程学院,云南昆明650224

出　　处：《林业科技》2007年第5期41-44,共4页Forestry Science & Technology

基　　金：云南省自然科学基金重点资助项目(2003C009Z)

摘　　要：对4种树龄西南桦木材物理力学性质株内变异进行测定分析的结果表明,西南桦木材物理力学性质在株内变异趋势随着树高的增加而降低;株内变异差异显著性t检验表明:7年生与11年生株内差异显著,15年生和19年生差异显著和不显著;3项木材力学主要指标与木材密度的相关系数随树高的增加呈降低表现。The were determined variation within four - different - age of Betula alnoides trees of wood physical properties and analyzed. The results showed that the tendency of variation within Betula alnoides trees of wood ph significant test of ysical properties was declined with the height increasing. The results of different variation within trees of wood physical properties showed that the variation within 7 year old and 11 year old were significant, 15 year old and 19 year old were significant and insignificant. The correlation coefficients between mechanical and density were declined with the height increased.

关 键 词：西南桦 树龄 株内变异 

分 类 号：S792.15[农业科学—林木遗传育种] S781.29[农业科学—林学]