不同种源杉木物理力学性质的比较研究

为优选杉木种源，制定速生丰产林的定向培育措施，按照《木材物理力学性质试验方法》的规定，对江苏省句容县，江西省分宜县，广西省柳州市三个试验点的三十三个杉木种源木材的气干密度、顺纹抗压强度，抗弯弹性模量和抗弯强度等主要物理力学指标进行了测定分析。结果表明，同生长点不同种源间存在差异，同种源不同生长点间也存在差异，随着生长点纬度的增加，材性指标也有渐增的趋势；在一定程度上地理环境因素比遗传因素对材性的影

Comparative Studies on Wood Major Physic mechanical Properties of Cunninghamia lanceolata from Different Provenances

In order to optimum select Cunninghamia lanceolata provenances and make up directive breeding steps of fast growing and high yield forests, the air dried density, bastard compressive strength, bend elastic modulus and bend strength of wood for thirty three Cunninghamia lanceolata provenances were determined according to the rules of Test Method on Wood Physic mehanical. These provenances trials distribute respectively in Jurong of Jiangsu Province, Fenyi of Jiangxi Province and Liuzhou of Guangxi Province. The resutls show that there are differences among provenances as well as different growing points of the same provenances, and wood indexes have the tendency of increasing with the increase of the latitute of growing points. To some extent, the influence of geographical conditions on wood properties is more notable than that of heredity factors.