云南箭竹纤维形态变异规律  

Morphological differences of Fargesia yunnanensis fibers

作　　者：王曙光[1] 普晓兰[2] 丁雨龙[1] 万贤崇[3] 林树燕[1] 

机构地区：[1]南京林业大学竹类研究所,江苏南京210037 [2]西南林学院资源学院,云南昆明650224 [3]中国林业科学研究院新技术研究所,北京100091

出　　处：《浙江林学院学报》2009年第4期528-532,共5页Journal of Zhejiang Forestry College

基　　金：国家林业科技支撑项目(2006BAD19B02)

摘　　要：对云南箭竹Fargesia yunnanensis纤维形态特征进行了显微观测和系统分析,结果为:云南箭竹纤维长度为0.50～5.18mm,平均长度为1.74mm;云南箭竹纤维宽度为5.70～52.00μm,平均宽度为19.98μm;长宽比为18.86～361.71,平均为92.80;壁厚为0.80～416.00μm,平均为14.17μm;腔径为0.30～390.00μm,平均为5.53μm;壁腔比为0.03～109.00,平均值为3.11。云南箭竹纤维平均长度的纵向变异规律为中部>基部>上部,纤维的平均宽度表现出类似的变化规律;云南箭竹纤维的平均壁厚表现出的变化规律,1年生和2年生均为基部>中部>上部,而3年生云南箭竹纤维平均壁厚的变异规律为基部<中部<上部,腔径也表现出与壁厚类似的变化规律。年龄和部位对云南箭竹纤维特征影响显著。Fargesia yunnanensis is one alpine bamboo that belongs to Fargesia Franchet, which has no reports on variation pattern of fiber properties so far. Morphology of F. yunnanensis fibers was examined and analyzed systematically to investigate the growth change of F. yunnanensis fibers by adopting the method of fiber isolation, so as to provide a theoretical foundation for the rational development and utilization of this bamboo. The results showed that fiber length ranged from 0.50 to 5.18 mm averaging 1.74 mm, fiber width rariged from 5.70 to 52.00 μm averaging 19.98 μm, the fiber length to width ration ranged from 18.86 to 361.71 averaging 92.80, fiber cell cavity diameter fiber cell wall thickness ranged from 0.80 ranged from 0.30 to 390.00μm averaging to 416.00 μm averaging 14.17 μm, 5.33 μm, and the fiber cell wall to cavity ratio varied from 0.03 to 109.00 averaging 3.11. The change for average fiber length in mature bamboo culms was middle 〉 bottom 〉 top, and average fiber width showed an analogous rule to average fiber length. Also, the change for average fiber wall thickness in one- and two-year-old bamboo culms was bottom 〉 middle 〉 top and in three-year-old bamboo culms was top 〉 middle 〉 bottom; fiber lumen diameter showed an analogous rule to fiber cell wall thickness. Thus, age and the bamboo longitudinal location had a strong influence on fiber characteristics. [Ch, 1 tab. 10 ref.]

关 键 词：木材学 云南箭竹 纤维形态 变异规律 

分 类 号：S781.3[农业科学—木材科学与技术] S718.43[农业科学—林学]