黑杨派新无性系木材物理力学性质研究

伐取浙江临海无性系试验林 5年生 10个速生黑杨新无性系 30个样株 ,测定木材的物理力学性质。结果表明 ,其木材密度高于同地区速生杉木、柳杉 10年生木材的测定值 ,力学性质与之相近 ;木材物理性质在速生无性系间无显著差异 ,而力学性质差异显著或极显著 ;木材密度与力学性质显著相关 ,而木材性质与胸径生长相独立 ;参试无性系中 36 7、36 6、370、1388、12 1等无性系最适于营建短伐期工业用材林。

A Study on Timber Physical and Mechanical Properties of New Aigeiros Clones

Thirty individual trees of 10 five year old fast growing, new Aigeiros clones were felled from an experimental plantation in Linhai, Zhejiang Province to make measurements on physical and mehanical properties of the timber. It is showed that the timber density of the poplar is higher than those of 10 year old Cunninghamia lanceolata and Crypotumeria fortunei growing fast in the same region, while the mechanical properties are similar among tree species, there is no significant difference among clones in timber physical properties and there is significant or most significant difference among clones in mechanical properties. It is also revealed that timber density is in close correlation with mechanical properties, while timber properties are independent of DBH. Among the clones tested, clones 367, 366, 370, 1388 and 121 are suitable to be used in the establishment of a short rotation industrial timber forest.