人工林尾巨桉株内、株间纤维形态变异的研究  

Internal and In-between Variation of Fiber Conformation in Eucalyptus urophylla×Eucalyptus grandis Trees

作　　者：苌姗姗[1] 刘元[2] 胡进波[2] 吴义强[2] 朱林峰[2] 

机构地区：[1]北京林业大学材料科学与技术学院,北京100083 [2]中南林业科技大学材料科学与工程学院,湖南长沙410004

出　　处：《中南林业科技大学学报》2007年第5期92-96,共5页Journal of Central South University of Forestry & Technology

基　　金：国家自然科学基金项目"我国主要桉树人工林树种木材材性性状遗传分析"(30170754)

摘　　要：对5株13年生的尾巨桉纤维形态的径向变异进行研究，在显微镜下观察木材解剖构造，同时对纤维长、纤维宽、胞壁厚和纤维长宽比进行了测量．结果表明：尾巨桉属阔叶散孔材，纤维形态指标径向上具有增大的趋势，株内径向上各纤维形态指标差异显著，株间略有差异．尾巨桉木材平均纤维长0．73～1．01mm，胞壁厚4．36～5．09μm，纤维跃宽比42～51，能满足纤维工业原料的要求，属较好的纸浆工业用材．The radial variability of fiber conformation in 5 13-year-old E. urophylla X E. grandis trees was studied. The microscopic structure of their wood was observed in transverse sections; and their fiber length, width, wall thickness and ratio of fiber length versus width were measured after maceration. Results show that E. urophylla X E. grandis belongs to diffuse-porous wood and its fiber conformation has an increasing trend which shows obvious internal and a little in-between variation, and that there exists little difference between trees., the average fiber length is 0.73-1.01 mm, the wall thickness 4.36-5.09 μm and the ratio of fiber length versus width 42- 51. Evaluated from the fiber conformation, E. urophylla X E. grandis can meet the demands of fiber material and is suitable for paper industry.

关 键 词：木材学 尾巨桉 纤维形态 

分 类 号：S792.39[农业科学—林木遗传育种] S781.1[农业科学—林学]