不同立地条件香椿人工林木材材质的比较  

Comparative Study on Wood Quality of Toona sinensis Plantation in Different Sites

作　　者：缪妙青 吴光华 范振富 

机构地区：[1]福安市林业局,福建福安355000 [2]福安市赛岐林业站,福建福安355001

出　　处：《福建林业科技》2003年第4期12-14,21,共4页Journal of Fujian Forestry Science and Technology

摘　　要：通过对不同立地条件下香椿人工林木材物理力学性质的测定和比较分析表明:香椿人工林木材密度和干缩性随着立地级的提高而减小;木材顺纹抗压强度、抗弯强度和硬度:Ⅰ级地<Ⅱ级地<Ⅲ级地,抗弯弹性模量、抗劈力、冲击韧性:Ⅱ级地>Ⅰ级地>Ⅲ级地,顺纹抗剪强度:Ⅱ级地>Ⅲ级地>Ⅰ级地。差异显著性t检验表明:香椿人工林木材密度Ⅰ级地、Ⅱ级地、Ⅲ级地间差异不显著。香椿人工林木材干缩性和力学性质指标Ⅰ级、Ⅱ级、Ⅲ级地3者间有的指标差异极显著,有的指标差异显著,大部分指标差异不显著。Physical and mechanical properties of Toona sinensis wood in different sites from plantation were determined and analyzed comparatively.The results showed that the density,shrinkage decreased with the increase of site degree.As for Compression strength parallel to grain,the bending strength and hardness,Ⅰ<Ⅱ<Ⅲ.As for elastic modulus of bending,impact toughness and cleavage resistance,Ⅱ>Ⅲ>Ⅰ.As to shear strength parallel to grain,Ⅱ>Ⅲ>Ⅰ.Different significant t test showed that there are not significant differences on the density between Toona sinensis wood in different sites Ⅰ,Ⅱ,Ⅲ but as for shrinkage and mechanical strength differences of some indexes are extremely significant,ones of some indexes are significant and ones of some indexes are not significant between Toona sinensis wood in different sites,Ⅰ,Ⅱ,Ⅲ.So,affection on wood properties by sites must be considered carefully when Toona sinensis woods from plantation are managed and used.The conclusions provide scientific basis for directive silviculture and rational use efficiently of Toona sinensis wood.

关 键 词：香椿 人工林 木材材质 立地条僻 木材物理力学性质 木材力学性质 

分 类 号：S781.2[农业科学—木材科学与技术]