Attempts are underway to speed up timber production using genetic improvement and enhanced management practices. However, the impacts of possible morphological and chemical changes on the properties of secondary wood products are less studied. This research thus studied the relationship of tree-ring widths of eastern poplar trees (Populus deltoides Bartr.) and the morphological and chemical characteristics of the wood fibers. Cellulose, lignin, ash, and extractives contents were determined according to the Technical Association of Pulp and Paper Industry standards. Accordingly, the mean values of the various parameters measured, such as the fiber length and diameter, the diameter of the cell cavity, and the cell wall thickness along with functionality parameters such as Runkel, slenderness, and flexibility ratio, and the amounts of cellulose, lignin, extractives, and ash contents were determined. As a result, statistical analysis indicated significant correlations between tree-ring width and length and diameter of the fiber, cell cavity, Runkel ratio, cell wall thickness, cellulose content and wood density. On the contrary, there were no significant correlations between tree-ring width and slenderness and flexibility ratios, lignin, ash, and extractives contents. The investigation on the radial variation of wood properties showed from the pith to the bark, fiber length and diameter, cell wall thickness, cellulose, and density increased, and cell cavity, Runkel ratio, ash, extractives, and lignin contents decreased. Overall, increases in tree-ring width of eastern poplar improved wood quality, as raw material, for manufacturing of the most common secondary products in the wood industry, including paper and fiberboard with wide-ranging wood applications.

正在尝试通过遗传改良和强化管理实践来加快木材生产。但是，关于可能的形态和化学变化对次生木制品性能的影响的研究较少。因此，本研究研究了东部杨树（Populus deltoides）的年轮宽度之间的关系。Bartr。）和木纤维的形态和化学特性。纤维素，木质素，灰分和提取物的含量根据纸浆和造纸工业技术协会的标准确定。因此，测量的各种参数的平均值（例如纤维长度和直径，细胞腔直径和细胞壁厚度）以及功能参数（例如Runkel，细长度和柔韧性比）以及纤维素量测定了木质素，提取物和灰分。结果，统计分析表明树木年轮宽度与纤维长度和直径，细胞腔，Runkel比，细胞壁厚度，纤维素含量和木材密度之间存在显着相关性。相反，树木年轮的宽度和细长度与柔韧性比，木质素，灰分和提取物含量之间无显着相关性。木材特性的径向变化研究表明，从髓到树皮，纤维长度和直径，细胞壁厚度，纤维素和密度增加，细胞腔，Runkel比，灰分，提取物和木质素含量降低。总体而言，增加东部杨树的年轮宽度可以改善木材质量，作为原材料，可用于制造木材工业中最常见的次级产品，包括具有广泛用途的纸张和纤维板。纤维素和密度增加，细胞腔，Runkel比，灰分，提取物和木质素含量降低。总体而言，增加东部杨树的年轮宽度可以改善木材质量，作为原材料，可用于制造木材工业中最常见的次级产品，包括具有广泛用途的纸张和纤维板。纤维素和密度增加，细胞腔，Runkel比，灰分，提取物和木质素含量降低。总体而言，增加东部杨树的年轮宽度可以改善木材质量，作为原材料，可用于制造木材工业中最常见的次级产品，包括具有广泛用途的纸张和纤维板。