通过对银杏木材微纤丝角的径向变化及其与生长轮密度相关性质的研究 ,结果表明 ,银杏木材平均微纤丝角为 1 8.5°,生长轮内早材微纤丝角较大 ,晚材较小 ;生长轮间沿径向呈减小趋势。木材微纤丝角与生长轮年龄、生长轮宽度、生长轮密度之间有较密切关系 ,建立了 5个相关模型 ,为银杏用材林的定向培育和木材加工利用提供依据 The results showed that the average microfibril angle of Ginkgo biloba was 1 8.5 ° and the angle of microfibril angle of earlywood was larger in growth ring. Latewood is smaller; between the growth of the wheel is decreasing along the radial direction. Wood microfibril angle and growth wheel age, growth wheel width, growth wheel density is more closely related to the establishment of the five related models, ginkgo timber for directional cultivation and timber processing and utilization provide the basis