4种相思树种的解剖特征与木材材性比较分析  

ANALYSIS AND COMPARISON OF ANATOMIC FEATURES AND WOOD PROPERTIES OF FOUR ACACIA SPECIES

作　　者：庞宇[1] 刘君良[2] 

机构地区：[1]中国林业科学研究院林产化学工业研究所,南京210042 [2]中国林业科学研究院木材工业研究所,北京100091

出　　处：《内蒙古农业大学学报（自然科学版）》2007年第1期99-103,共5页Journal of Inner Mongolia Agricultural University(Natural Science Edition)

基　　金：中国APEC科技产业合作项目"高产优质人工用材林培育和利用技术的研究"的部分内容

摘　　要：本文运用对比分析的方法对4种相思木材的解剖特征、纤维形态等进行了详细的测量、观察与分析,对4种木材的基本密度、气干密度、干缩系数、抗弯强度、抗弯弹性模量、冲击韧性等进行了对比研究。结果表明,厚荚相思的纤维平均长度最大为1179.6μm,而马占相思的导管平均长度333.1μm为最大。4种相思木材的纤维微观形态可以满足制浆造纸的要求,可以作为纸浆材使用。卷荚相思的气干密度和基本密度值均为最大,分别为721 kg/m3和617 kg/m3。马占相思的干缩和湿胀系数基本上都是最小的,所以马占相思的尺寸稳定性最好,而卷荚相思的各项力学指标都是最好的,所以卷荚相思的力学性能最好。The anatomic features and fiber morphology of four Acacia species were investigated by the method of comparative analysis. Physical and mechanical properties such as air dry density, dimension stability, MOR, MOE, toughness were also measured and compared. Results indicated that A. crassicarpa is of the greatest average fiber length and A. mangium is of the greatest average vessel length, which are 1179.6μm and 333.1μm respectively. Fiber morphology of all four Acacia species is in accord with the requirement on pulping and papermaking so the 4 Acacia timbers can be used for pulpwood. A. cincinata is of the greatest air - dry density 721 Kg/ m^3 and greatest basic density 617 Kg/m^3 , however, A. mangium is of the best dimensional stability because of its smallest coefficients of shrinkage. With the highest values of every index, A. cincinata is of the best mechanical properties.

关 键 词：相思 纤维形态 物理性质 力学性能 

分 类 号：S781.1[农业科学—木材科学与技术]