【摘要】 以6年生白蜡杆为研究对象,采用树干解析和木材离析方法,对不同立地条件上白蜡杆的树高、地径、材积生长量和基本密度进行了测定和分析;并借助电子显微镜,从微观角度对白蜡杆木材解剖性质及其径向和轴向变异规律进行了测定和分析。结果表明:不同立地条件上白蜡杆树高、地径和材积生长量差异显著,基本密度的轴向变异规律不明显,在树高间无显著差异;两个立地条件上纤维长度、纤维宽度和纤维长宽比径向变异规律一致,纤维形态特征在株内不同高度间差异显著。更多还原

【Abstract】 Fraxinus chinensis is one of the main wind-breaking and sand-fixing tree species,can be used to make bentwood furniture and sports equipment.Stem-analysis and timber segregation observation were conducted to explore the effects of different sites on the height,ground diameter,volume,basic density and fiber morphology of Fraxinus chinensis of 6-year-old.The anatomical properties and their variation patterns were systematically studied by using electronic microscopic.The results show that the growth differences were significant in different sites,it grew better in site of sufficient water and fertilizer and good soil texture.The variation of the basic density between axis and the height was not significant and significantly different.The radial variation of the fiber length,fiber width,ratio of fiber length to width was consistent in different site.The fiber morphological features in different tree height were significantly different.更多还原