火炬松木材的抗弯弹性模量和抗弯强度的变异  

Variations of MOE and MOR in loblolly pine wood.

作　　者：徐曼琼[1] 鹿振友 李黎[1] 王洁瑛[1] 王淑娟[1] 

机构地区：[1]北京林业大学森林工业学院,北京100083

出　　处：《北京林业大学学报》2001年第4期56-59,共4页Journal of Beijing Forestry University

基　　金："九五"国家科技攻关课题! (11 0 3 0 5 )"工业用材林木材材质性研究"资助

摘　　要：10年生速生材火炬松的 2 8个家系间 ,木材的抗弯弹性模量 (MOE)和抗弯强度 (MOR)分别在 0 .0 0 1显著性水平和 0 .0 1显著性水平下差异显著 .整体上 ,2 8个家系的MOE ,MOR的个体变异大部分大于家系间的变异 ,因此火炬松材质改良在家系基础上进行个体改良效果会更好 .其中 17,37,5 1等 3个家系为抗弯性能较好的优树家系 .2 8个家系的MOE和MOR存在线性相关 ,相关系数为r=0 .5 74.MOE和MOR分别与气干密度达到 0 .0 5和 0 .0Among the 10 years old wood of loblolly pine from 28 clones, MOE (modulus of elasticity) and MOR (modulus of rapture) had notably differences respectively at 0.001 and 0.01 levels. The individual variations of MOE and MOR in a clone were mostly higher than those among the clones, which showed that the effect of genetic improvement of plantation loblolly wood properties could be better on the individuals in a clone. Among the 28 clones,number 17, 37 and 51 were better in respect to MOR. MOE and MOR of the 28 clones had linear relations, r=0.547. MOE and MOR with air drying density had remarkable relation respectively at 0.05 and 0.01 level.

关 键 词：速生材 火炬松 家系 抗弯弹性模量 抗弯 强度 线性相关 显著性 木材 松材 

分 类 号：S781.2[农业科学—木材科学与技术] S791.255[农业科学—林学]