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1959年材性室代林业土壤研究所试验人工林长白落叶松木材强度时,发现该树种在人工培育条件下生长迅速,木材物理力学性质优良。为此作者等于1960年赴长白山林区,在天然林和人工林内重新采伐长白落叶松(Larix olgensis A.Henry),比较其木材构造及其物理、力学性质。除按幼龄材和壮龄材来分别考虑其材性外,并初次应用“生长轮的年龄”这个方法和理论来阐明在不同树高部位上解剖特性产生差异的主要原因。
In 1959, Institute of Soil Science, Agency for Forestry and Forestry, China, experimentally tested the wood strength of Larix olgensis plantations, it was found that the species grew rapidly under artificial cultivation conditions, and the physical and mechanical properties of wood were excellent. For this reason, the author came to Changbai Mountain in 1960 for reforestation of Larix olgensis A. Henry in natural forests and plantations, and compared its wood structure and its physical and mechanical properties. In addition to the young material and young material to consider their material properties, respectively, and for the first time using the “growth wheel of the age” of this method and theory to clarify the differences in the anatomical characteristics of different parts of the main reasons for height.