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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。
Ten clones of 10 fast-growing black poplar clones of five-year-old experimental climbers in Linhai, Zhejiang Province were harvested for the determination of their physical and mechanical properties. The results showed that the wood density was higher than that of the fast-growing Chinese fir and Cryptomeria fortunei in the same area. The wood physical properties were similar to those of the fast-growing clones, but the mechanical properties were significantly or extremely significant. The wood Density and mechanical properties were significantly correlated, while wood properties were independent of DBH growth. Clones 36 7, 36 6,370, 1388 and 121 were most suitable for the construction of short-cutting commercial timber stands.