不同立地条件红壳竹竹材物理力学性质的比较  

Comparative study on physico-mechanical properties of Phyllostachys iridenscens wood under different sites

作　　者：俞友明[1] 方伟[1] 杨云芳[1] 余学军[1] 金永明[1] 

机构地区：[1]浙江林学院林产工业系,浙江临安311300

出　　处：《浙江林学院学报》2001年第4期380-383,共4页Journal of Zhejiang Forestry College

摘　　要：测定了不同地位级不同竹龄红壳竹竹材的物理力学性质。结果表明 :不同地位级红壳竹竹材的基本密度和力学性质都随竹龄的增大而提高 ;径向、弦向和体积全干缩率随竹龄增大而减少 ;地位级Ⅱ的竹材的基本密度和力学性质高于地位级Ⅰ ,径向、弦向和体积全干缩率小于地位级Ⅰ ;不同地位级的竹材基本密度、顺纹抗压强度、顺纹抗拉强度和弦向抗弯强度有显著差异 ,而径向抗弯强度无显著差异。表 4参The physico mechanical properties of  Phyllostachys iridenscens wood in different sistes and ages were determined.The results showed that the basic density and mechanical property of Phyllostachys iridenscens wood under different sites increase with the age while the full shrinkage ratio of the radial,chord and volume decrease gradually with the age;the basic density and mechanical property of site Ⅱ are better than site Ⅰ and the full shrinkage ratio of the radial,chord and volume of site Ⅱ are smaller than those of site Ⅰ.There are significant differences on the basic density,compression strength parallel to the grain,tensile strength parallel to the grain and chord bending strength and no one on the radical bending strength in different sites.

关 键 词：红壳竹 竹材 物理力学性质 地位级 竹龄 立地条件 

分 类 号：S781.8[农业科学—木材科学与技术] S781.29[农业科学—林学]