油松半同胞子代及亲本木材构造与物理力学性质的研究

A Study on Wood Structure and Physical and Mechanical Properties of the Half Sib Progeny and Parent of Pinus tabulaeformis Carr

通过对陕西省陇县八渡林场油松 ( Pinus tabulaeformis)优树半同胞子代及亲本木材解剖构造与物理力学性质的比较研究 ,结果表明 :油松优树半同胞子代林家系尚处于幼龄材阶段 ,顺纹抗压强度低 ;但全干干缩系数小 ,微纤丝角亦较小 ,尺寸稳定性高 ,不易变形 。

The wood anatomical, physical and mechanical properties of the half sib progeny of the pinus trees and parents of P. tabulaeformis were studied. The results show that the wood of the half sib progeny of the pinus trees are still in juvenile stage; its compressive strength parrallel to grain are low but shrinkage rate from green to dry and microfibril angle are low, the dimentional stability is slightly better, and the wood is uneasily deformed. Therefore the mature wood will be a good structural wood.