摘要
利用光学显微镜对云南松直干、弯干材木材构造进行解剖学观察,结果表明:弯干材在解剖结构上跟直干材基本保持一致。与直干材相比,弯干材的早材比直干材的早材窄,树脂道多;早、晚材管胞的长度、壁厚、弦向直径差幅分别为:0.14、0.63、4.4、13.56、-0.46、0.81;最大交叉场纹孔数和最大单列射线细胞个数比直干材分别多1个和2个;纺锤形射线高度超出直干材的51.73%。弯干材具有右旋扭转纹。另外,两种材料都是较好的造纸原料,且以弯干材为优。
Wood anatomy of straight stem and twist stem in Pinus yunnanensis Franch were studied via a microscope. The results showed that there was a little difference between them in main structure. Compared with straight stem, twist stem had more resin canal and springwood of twist stem was narrower. The difference index of the length, thinness of cell wall and diameter of tracheid between earlywood of straight stem and twist stem were 0.14, 4.4 and 0.46. The difference index between latewood of straight stem and twist stem were 0.63, 13.56 and 0.81. The maximum amount of Cross--field cells in twist stem was 1 more than that in straight stem and the maximum amount of uniseriates was 2 more than that in straight stem. The height of fusiform in twist stem was 51.73% more than that in straight stem. Twist stem had dextral spiral. Twist stem and straight stem were good material？ of paper making and twist stem was better.
出处
《山东林业科技》
2009年第5期51-54,共4页
Journal of Shandong Forestry Science and Technology
基金
云南省应用基础研究重点项目(2003C009Z)
面上项目(2006C0079M)
"西南林学院大学生科技创新项目(0810)"项目资助
关键词
云南松
直干
弯干
木材解剖
Pinus yunnanensis Franch
straight stem
twist stem
wood anatomy.
