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兴安落叶松木材解剖性质及其与生长应变关系研究

发表时间:2009-08-31  浏览量:1593  下载量:729
全部作者: 刘盛全,白默飞,周亮,刘倩
作者单位: 安徽农业大学林学与园林学院
摘 要: 以黑龙江省哈尔滨市高楞乡方正林场选取的20年生兴安落叶松4株木材为材料,深入探讨兴安落叶松管胞形态特征和微纤丝角径向变异规律及其与内部径向残余生长应变关系。结果表明:1) 兴安落叶松木材管胞长度平均值为2 125.43 μm,管胞宽度平均值为35.06 μm,长宽比平均值为60.67,壁腔比平均值为0.33,微纤丝角平均值为27.37°,属于长纤维,是很好的制浆造纸纤维原料。2) 兴安落叶松木材管胞长度径向变化模式为Panshin Ⅱ型;管胞宽度、长宽比径向变化为从髓心到树皮逐渐增加;壁腔比径向变化呈波动上升趋势;微纤丝角径向变化呈逐渐减小趋势。3)兴安落叶松木材内部径向残余应变随着纤维长度、纤维宽度、长宽比的增加而减少,呈负相关,相关系数分别为0.834 4,0.761 6,0.615 8,与壁腔比的关系不明显;与微纤丝角呈正相关,相关系数达到0.611 0.
关 键 词: 木材科学与技术;兴安落叶松;解剖特征;内部残余生长应变;变异规律
Title: Study on variation of wood anatomy features and their relationships with growth strain in Larix gmelinii (Rupr.)
Author: LIU Shengquan, BAI Mofei, ZHOU Liang, LIU Qian
Organization: School of Forestry and Landscape Architecture, Anhui Agricultural Uniersity
Abstract: In this paper, 4 trees aged 20-year-old of Larix gmelinii (Rupr.) from Fangzheng forest station in Gaoleng town, Harbin city of Heilongjiang province were selected as the material. The variation pattern of anatomical features and their relationships with growth strain were analyzed. The results showed that: 1) The average tracheid length of Larix gmelinii was 2 125.43 μm, the average tracheid width was 35.06 μm, the average ratio of length to width of wood tracheid was 60.67, the average ratio of cell wall to lumen of wood tracheid was 0.33 and the average microfibril angle of wood tracheid was 27.37°. It belongs to the long fiber, which is suitable for the pulp and paper fiber raw materials. 2) The radial variation pattern of tracheid length belongs to the type of Panshin II. The tracheid width and the ratio of tracheid length to width increased gradually from pith to bark. The ratio of the cell wall to lumen increased from pith outward with fluctuation and the microfibril angle decreased gradually. 3) The inner residual growth strain decreased with the increase of tracheid length, tracheid width and ratio of tracheid length to width, there existed negative correlation (r=0.834 4, 0.761 6, 0.615 8, respectively), except ratio of cell wall to lumen. There existed positive correlation between inner residual growth strain and microfibril angle (r=0.611 0).
Key words: wood science and technology; Larix gmelinii (Rupr.); anatomical features; inner residual growth strain; variation pattern
发表期数: 2009年8月第16期
引用格式: 刘盛全,白默飞,周亮,等. 兴安落叶松木材解剖性质及其与生长应变关系研究[J]. 中国科技论文在线精品论文,2009,2(16):1695-1703.
 
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