刺楸木材微纤丝角与组织比量的变异研究

以安徽琅Ｙａ山天然林内刺楸成年树木为材料，对其微纤丝角与组织比量的变异进行了分析，结果表明：（１）木纤维次生壁Ｓ２层微纤丝角自髓心向外逐渐减小，１７年左右达最小值，然而又增加。

Study on the Variation of Microfibrillar Angie and TissueProportion in Pricky Coster Oil Tree(Kalopanax septemlobus)

The testing material was drawn from the mature trees grawn in naturalstands of Mount.Langya,Anhui Province,The wood variation of microfilrillar angle andtissue proportion were analyzed.The results show:1)microfibrillar angle within the S2 lay-er of the secondary wall in fibers decreases to minimum at 17-year from pith outward,thenincreases again near the bark of the tree;2)along the stem height,microfibrillar angle de-creases to minimum at 1.3m height,then increases again near top of the tree;3)the corre-lation coefficient between the fiber length and the microfibrillar angle is not significent (r= 0. 5206);4) the tissue proportion is different with anatomical elements:the fiber proper-tion decrease gradually,the vessel proportion and the ray proportion of the wood increasegradually from pith outward and along the stem height.