摘要
对采自于河南省南阳市的21年生楸树新无性系宛楸8401和宛楸8402与生产上广泛应用的金丝楸无性系进行木材主要物理力学性质的对比研究。结果表明:3个无性系的基本密度、气干密度、端面硬度、弦面硬度、径面硬度、抗弯强度、抗弯弹性模量、顺纹抗压强度、顺纹抗拉强度、冲击韧性、弦向抗剪强度和径向抗剪强度差异极显著,宛楸8401和金丝楸相近,且显著优于宛楸8402;3个无性系的成熟材与幼龄材的物理力学性质也表现出显著差异;与黄菠萝、核桃楸、红椿和香樟相比,宛楸8401和金丝楸与香樟和黄菠萝相近,优于红椿,但是比核桃楸稍差,宛楸8402与红椿相近。
In order to study the differences of physical and mechanical properties between two new Catalpa bungei clones ＂Wanqiu 8401＂, ＂ Wanqiu 8402＂ and ＂Jinsiqiu＂ , three ramets of each clone were determination. The results showed ihat basic density, air-dried density, hardness of end surface, hardness of tangential section, hardness of radial section, bending strength, modulus of elasticity, compression strength parallel to grain, tensile strength parallel to grain, toughness, shear strength parallel to grain of tangential direction and shear strength parallel to grain of radial direction had significant differences among clones. ＂Wanqiu 8401＂ and ＂Jinsiqiu＂ were highly similar, which was significantly better than ＂Wanqiu 8402＂. Also, significant differences was obversed between mature wood and juvenile wood of three clones. Additionally, three clones were comparison with other timber which were popular in China, ＂ Wanqiu 8401 ＂ and ＂Jinsiqiu＂ were better than Toona ciliate, but worse than Juglans mandshurica, ＂Wanqiu 8402＂ and Toona ciliata were highly similar, ＂Wanqiu 8401＂, ＂Jinsiqiu＂ and Cinnamomum camphora, Phellodendron amurense were highly similar.
出处
《林业科学》
EI
CAS
CSCD
北大核心
2013年第9期126-134,共9页
Scientia Silvae Sinicae
基金
林业公益性行业科研专项(201104001)
农业成果转化资金项目"珍贵用材树种楸树优良新品种的中试与示范"(2008GB24320414)
关键词
楸树
新无性系
木材
物理力学性质
差异
Catalpa bungei
new clones
timber
physical and mechanical properties
differences
