黑木相思木材化学性质株内变异研究  

Within-Tree Variation of Chemical Properties of Acacia melanoxylonWood

作　　者：周凡 付宗营 高鑫[1] 周永东[1] 晏婷婷 ZHOU Fan;FU Zong-ying;GAO Xin;ZHOU Yong-dong;YAN Ting-ting(Research Institute ofWood Industry,Chinese Academy of Forestry,Beijing 100091,China)

机构地区：[1]中国林业科学研究院木材工业研究所,北京100091

出　　处：《木材科学与技术》2021年第3期25-30,共6页Chinese Journal of Wood Science and Technology

基　　金：中央级公益性科研院所基金项目“火力楠、黑木相思无性系高效培育和木材干燥技术”(CAFYBB2018ZB004)。

摘　　要：研究我国黑木相思木材化学性质的株内变异规律,为其加工利用提供基础数据。对广东韶关产28 a黑木相思木材进行化学组成测定,其综纤维素(α纤维素、半纤维素)、酸不溶木质素和抽出物(冷水、热水、1%氢氧化钠、苯醇)的含量在株内纵向上的变异规律不明显;相较于边材,心材的综纤维素含量略低,酸不溶木质素含量略高,抽出物含量更高,pH值更低。实际加工利用中需考虑其心材和边材比例对原料化学组成的影响。The within-tree variation of wood chemical properties was evaluated for Acacia melanoxylon grown in China.The results showed that the longitudinal variation of the holocellulose(αcellulose and hemicellulose),acid-insoluble lignin,and extractive(cold water,hot water,1%sodium hydroxide and benzene alcohol)contents was not significant.Compared with the sapwood,the heartwood contained slightly lower holocellulose(αcellulose and hemicellulose)contents,slightly higher acid-insoluble lignin contents,higher extractive contents,and a lower pH value.The effect of the proportion of heartwood and sapwood within the tree on chemical composition contents should be considered as a quality characteristic in the processing application of Acacia melanoxylon wood.

关 键 词：黑木相思 化学性质 纵向变异 心材 边材 

分 类 号：S792.99[农业科学—林木遗传育种] S781[农业科学—林学]