摘要
通过对滨海沙地和山地红壤湿地松人工林木材物理力学性质和管胞形态的测定和比较分析 ,结果表明 :滨海沙地湿地松人工林木材除硬度大于山地红壤湿地松人工林外 ,其余物理力学性质指标均稍小于山地红壤湿地松人工林 ;滨海沙地湿地松人工林木材管胞长度和宽度在同一年轮内均小于山地红壤湿地松人工林 ,长宽比大于山地红壤湿地松人工林 ,且滨海沙地湿地松人工林工艺成熟期比山地红壤湿地松人工林早两年左右。经差异显著性t检验表明 :滨海沙地和山地红壤湿地松人工林木材物理力学性质指标中顺纹抗压强度、抗弯弹性模量和冲击韧性差异极显著 ,抗弯强度差异显著 ,其余物理力学性质指标差异不显著。研究结果为湿地松人工林培育和木材合理利用提供科学依据。
The tracheid morphological features, physical and mechanical properties of Pinus elliottii wood from plantation in coastal sand and mountainous red soil were determined and analyzed comparatively. The results showed that almost all the physical and mechanical indexes except hardness of Pinus elliottii wood from plantation in coastal sand were slightly smaller than those of Pinus elliottii wood from mountainous red soil. The length and width of tracheid in the same growth ring of Pinus elliottii wood from plantation in coastal sand were also smaller than those of Pinus elliottii wood from mountainous red soil, but it was inverse for the ratio of length to width. The technological maturity of Pinus elliottii wood from plantation in coastal sand was about 2 years earlier than that of Pinus elliottii wood from mountainous red soil. Different significant t test showed that there were extremely significant differences in compression strength parallel to grain, elastic modulus of bending, impact toughness, significant differences in strength of bending but no significant differences in other physical and mechanical indexes between Pinus elliottii wood from plantation in coastal sand and that from mountainous red soil. The conclusions provide scientific basis for plantation cultivation and rational utilization of Pinus elliottii.
出处
《江西农业大学学报》
CAS
CSCD
2002年第5期640-644,共5页
Acta Agriculturae Universitatis Jiangxiensis
基金
福建省教育厅科学基金资助 (JA0 1 0 5 2 )
关键词
滨海沙地
山地红壤
湿地松
人工林
材质
Pinus elliottii
plantation forest
coastal sand
mountainous red soil
physical and mechanical properties of wood
tracheid morphological features
