山杨树枝和树根气干密度及纤维形态的研究  

Research on wood air-dry density and fiber morphology of branches and roots of Populus dadavidiana

作　　者：张昭林 赵西平[1] 苗明月 夏重阳 郝金虎 王绍颖 王楠[1] 李盈 ZHANG Zhaolin;ZHAO Xiping;MIAO Mingyue;XIA Chongyang;HAO Jinhu;WANG Shaoying;WANG Nan;LI Ying(Forestry College,Henan University of Science and Technology,Luoyang 471003,China)

机构地区：[1]河南科技大学林学院,河南洛阳471003

出　　处：《辽宁林业科技》2018年第5期5-8,共4页Liaoning Forestry Science and Technology

基　　金：国家自然科学基金项目(31000265)

摘　　要：为扩大山杨Populus davidiana的全树使用范围,对生长于小兴安岭地区山杨的树枝、树根气干密度及纤维形态进行了研究。结果表明:山杨树枝气干密度为0.487 g·cm-3,纤维平均长度745.824μm,平均宽度23.947μm,壁厚13.904μm,内径10.043μm,长宽比32.203,壁腔比0.773;山杨树根木材气干密度为0.333 g·cm-3,纤维平均长度859.442μm,平均宽度28.411μm,壁厚18.282μm,内径10.043μm,长宽比32.473,壁腔比0.591。方差分析表明,山杨树枝和树根除内径和长宽比差异水平不显著之外,其余各项指标差异均达到显著水平。山杨树枝和树根基本达到造纸和重组木原料要求。山杨树根比树枝更适合制造石膏刨花板。In order to develop whole-tree wood utilization of Populus davidiana,wood air-dry density and fiber morphology of branch and root in the Xiaoxing'an Mountains were studied.For the branches,the wood density was 0.487 g/cm3,the average fiber length was 745.824μm,the average width was 23.947μm,the wall thickness was 13.904μm,the inner diameter was 10.043μm,the aspect ratio was 32.203,and the ratio of wall to cavity was 0.773.For the roots,the air-dry density was 0.333 g·cm-3,the average fiber length was 859.442μm,the average width was 28.411μm,the wall thickness was 18.282μm,the inner diameter was 10.043μm,the aspect ratio was 32.473,and the ratio of wall to cavity was 0.591.The analysis of variance showed that wood air-dry density and fiber morphology(except for the internal diameter and aspect ratio)varied significantly between branch and root wood.The result indicated that the branch and root wood of Populus davidiana could meet the requirements of paper-making raw materials and recombined wood raw materials.The root wood was more suitable for the manufacture of plaster particle board than the branch wood.

关 键 词：山杨 树枝 树根 气干密度 纤维形态 

分 类 号：S781.25[农业科学—木材科学与技术]