›› 1985, Vol. 21 ›› Issue (3): 268-273.
• 论文及研究报告 •
摘要： 本文对湖南会同县的杉木木材进行了宏观、微观以及扫描电镜下观察试验。根据4株不同年龄杉木观察,杉木木材构造的变异受生长轮年龄的影响显著;伪轮的出现与生长季中的湿度、温度变化有关. 本试验试图为林业生产单位了解杉木生长规律,确定营林措施提供依据,为杉木木材利用及材质研究提供参考。
Abstract: The variation of wood structure in normal growth rings and false rings as well as the structure outwards from the pith to bark are investigated with four trees of Cunninghamia lanceolata at different age stages. The width of growth rings become gradually narrow with the increase of the tree-age after about ten years. False rings mainly appear in the wide growth rings near the pith,the number of which may be 1—3.It might be due to changes of temperature and moisture in the growing season.False ring always locates in the transition region from early to late wood within the growth ring.The sizes of wood elements in false ring are in the range of non-false rings. In normal growth rings,the average length of tracheids in late wood is 21% longer than that in early wood,the thickness of tangential cell wall of tracheids is 55% thicker,and the radial diameter of tracheid is 50% smaller than those in early wood. The size of wood elements in growth rings of the first 10th-15th outwards from the pith increases with the tree-age and undulates in rings there after. There are much warties on the inner surface of tracheid walls and bordered pit.
卢洪瑞. 杉木木材构造随树龄的变异[J]. , 1985, 21(3): 268-273.
Lu Hongrui. THE WOOD ANATOMICAL VARIATION OF CUNNINGHAMIA LANCEOLATA DUE TO TREE AGES[J]. , 1985, 21(3): 268-273.
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