湿地松与马尾松人工林木材物理力学性质的比较研究

通过对湿地松和马尾松人工林木材物理力学性质的测定和比较分析,结果表明:湿地松人工林木材密度、干缩系数和除冲击韧性以外的力学强度均稍大于马尾松人工林木材,而冲击韧性则恰恰相反.经差异显著性t检验表明:湿地松和马尾松木材物理力学性质指标中顺纹抗压强度、抗弯强度、弦面顺纹抗剪强度和冲击韧性差异极显著,气干密度、基本密度、径面顺纹抗剪强度和端面硬度差异显著,除此之外的其余指标差异不显著.

Comparative Study on Physical and Mechanical Properties of Pinus Elliottii and Pinus Massoniana Wood from Plantation

Physical and Mechanical of P. Elliottii and P. Massoniana from plantation were determined and analyzed comparatively. The results showed that the wood density, shrinkage coefficient and the indexes of mechanical strength except impact toughness of P. Elliottii wood from plantation were slightly bigger than that of P. Massoniana wood from plantation and that it was on the contrary for impact toughness. Different significant test showed that there were extremly significant differences on compressive strength parallel to grain, bending strength, shearing strength parallel to grain of tangential section, impact toughness and that there were significant differences on air-dried density, basic density, shearing strength parallel to grain of radial section, hardness of cross section but no ones on the other indexes between the wood of P. Elliottii and P. Massoniana from plantation. The conclusions provide scientific basis for rational utilization of P. Elliottii and P. Massoniana wood from plantation.