2种杨树湿心材化学成分分析  

Chemical Composition of the Wetwoods of Two Kinds of Poplar Species

作　　者：李明月 段洪南 吴振强 李兴会 邱坚 LI Ming-yue;DUAN Hong-nan;WU Zhen-qiang;LI Xing-hui;QIU Jian(College of Materials Engineering,Southwest Forestry University,Kunming,Yunnan 650224,Chin)

机构地区：[1]西南林业大学材料科学与工程学院,云南昆明650224

出　　处：《西北林学院学报》2018年第4期211-214,共4页Journal of Northwest Forestry University

基　　金：国家自然科学基金项目(31570555)

摘　　要：探究2种常见杨树三脉青杨(Populus trinervis)、康定杨(Populus kangdingensis)的心材、边材的化学成分,观察心边材主要化学成分差异,分析杨树湿心材形成的原因及其对不同化学成分之间的影响,并为杨树湿心材的利用提供基础数据。结果表明,2种杨树心材与边材主要化学成分有明显差异,湿心材现象明显,心材颜色较深,边材颜色浅;综纤维素含量心材低于边材;木质素含量心材高于边材;苯醇抽出物含量心材低于边材;1%NaOH抽出物的含量心材小于边材;冷水抽出物和热水抽出物含量心材均小于边材;灰分含量心材高于边材。In order to examine the difference between wet heartwood and sapwood and to explore the mechanism of wet heartwood formation,wet heartwoods and sapwood of two kinds of common poplar species（Populus trinervis,P.kangdingensis）were used as the raw materials to analyze the chemical compositions.Significant differences in the main chemical compositions were observed between the wet heartwoods and sapwoods of two poplar species.The colour of heartwood was darker than that of sapwood,the contents of holocellulose in heartwood was lower than the sapwood,and the lignin content was higher than that of sapwood,benzene-ethanol extractive in heartwood content was less than sapwood heartwood,1%NaOH extractive content of heartwood was less than sapwood,water extractive content of heartwood was less than sapwood,ash content in heartwood was higher than the sapwood.

关 键 词：杨树 湿心材 心材 边材 化学成分 

分 类 号：S781.41[农业科学—木材科学与技术]