兰考泡桐木纤维长度变异规律初探

兰考泡桐木材纤维长度的水平变异从里向外,不断增长,且与距髓心的距离成线性回归关系。纤维长度垂直变异从下向上开始增加到最大值而后降低;距髓心恒定年龄的同一植株的不同年龄和不同植株的同一年龄垂直变异略有区别。

A Preliminary Study of Fibre Length Variations of Paulownia elongata Wood

Describes the radial and vertical fibre length variations of Paulownia (Paulownia elongata S. Y. Hu) wood. Radially, fibre length increases gradually from pith to bark and has a simple linear regression relation with the distance away from pith. Vertically, fibre length increases from basal stem to top wood and reaches a maximum at certain height then decreases. The vertical fibre length variations of different year rings of a single tree or of the identical year ring of different trees are somewhat varied.