中文摘要：

选取正常生长和偏心生长欧美杨107杨为研究材料,测试其表面轴向生长应变,并测定应变测试位置处木材的纤维形态和干缩性质,分析应变与木材性质之间的关系。结果表明：1）随着生长应变数值的增加,正常生长立木纤维长度、胞腔径、长宽比、径向全干干缩率、弦向全干干缩率出现微弱的下降趋势,而纤维宽度、双壁厚、壁腔比、轴向全干干缩率出现微弱的上升趋势,正常生长立木生长应变与所有纤维形态指标和干缩性指标之间的相关系数均不显著;2）随着生长应变数值的增加,偏心生长立木双壁厚、长宽比、径向全干干缩率、弦向全干干缩率、轴向全干干缩率出现较快的下降趋势,而纤维宽度、胞腔径同时出现较快的上升趋势,纤维长度出现微弱的上升趋势,偏心生长立木生长应变与双壁厚、轴向全干干缩率、径向全干干缩率、弦向全干干缩率、壁腔比、弦向全干干缩率、长宽比的负相关关系显著,与腔径、纤维宽度的正相关关系显著,与纤维长度之间相关系数不显著;3）对于不含应拉木正常生长的立木,其生长应力与木材纤维形态和木材干缩性质之间关系较为微弱;对于含应拉木偏心生长的立木,由于应拉木材性与正常木之间的差别,其生长应力与多数木材纤维形态指标和木材干缩性质指标之间关系较为紧密。

英文摘要：

Both normal growth and eccentric growth poplar clone 107 standing tree were selected for studying materials in this paper.Surface longitudinal growth strain was determined,and fiber morphological properties and shrinkage properties of wood sample beneath which strain determined area were measured also.Relationships between growth strain and selected wood properties were deduced,and the result shown：along with increasing of growth strain,fiber length,ratio of fiber length to width,tangential oven-dry shrinkage and longitudinal oven-dry shrinkage of normal growth tree decreasing slightly,however,fiber width,width of double cell wall,runkel ratio,radial oven-dry shrinkage increasing slightly.Correlations among growth strain and all selected wood properties were insignificant.Along with increasing of growth strain,width of double cell wall,ratio of fiber length to width,longitudinal oven-dry shrinkage,tangential oven-dry shrinkage,radial oven-dry shrinkage of eccentric growth tree decreasing sharply,however,fiber width,runkel ratio increasing sharply,and fiber length increasing slightly.Negative correlation coefficients between growth strain and width of double cell wall,ratio of fiber length to width,longitudinal oven-dry shrinkage,tangential oven-dry shrinkage,radial ovendry shrinkage were significant,and positive correlation coefficients between growth strain and fiber width,runkel ratio were also significant.However,apparent correlation between growth strain and fiber length have not been found.When normal growth tree which did not contain tension wood was concerned,relationships between strain and fiber morphological properties and wood shrinkage properties were feeble.When it came to eccentric growth tree which contained tension wood,almost all relationships between strain and fiber morphological properties and wood shrinkage properties were tighter than normal growth tree owing to different properties of normal wood and tension wood.