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美洲黑杨新无性系主要物理力学性能研究
潘彪,王丰,连彩萍,潘惠新
0
(南京林业大学材料科学与工程学院,南京 210037;南京林业大学林学院,南京 210037)
摘要:
对11年生的11个美洲黑杨新无性系和1个对照组NL-351杨木材的气干密度、基本密度、干缩性、顺纹抗压强度、抗弯强度、抗弯弹性模量以及冲击韧性等物理力学性能进行了比较研究。结果表明,美洲黑杨新无性系木材的物理力学性能在无性系间存在显著差异;11个无性系中,无性系4-45、7-40和10-34的材性表现最好;密度与力学性能之间存在正相关关系;除了冲击韧性外,其他性能之间都存在显著或极显著的线性相关。
关键词:  美洲黑杨  无性系  物理力学性能
DOI:10.13610/j.cnki.1672-352x.20141029.017
基金项目:“超高产优质杨树速生材新品种选育”(2012BAD01B0303)资助。
Physical and mechanical properties of new Populus deltoides clones
PAN Biao,WANG Feng,LIAN Caiping,PAN Huixin
(College Science and Engineering, Nanjing Forestry University, Nanjing 210037;College of Forestry, Nanjing Forestry University, Nanjing 210037)
Abstract:
The physical and mechanical properties of 11 new Populus deltoides clones species at 11years old were studied. The 11-year-old clone NL-351 was the control. The result showed there were significant differences in the physical and mechanical properties among the 11 clones were observed. Clone 4-45, 7-40, and 10-34 showed the better physical and mechanical properties than other eight clones. A positive correlation between density and mechanical properties was determined. Except the toughness, other five properties were significantly linear correlated.
Key words:  Populus deltoides  clones  physical and mechanical properties

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