<正>笔者对太行山低山丘陵区石榴树吸水根根系空间分布特征进行研究 ,结果表明 :在垂直方向上 ,石榴吸水根根量主要集中于 0～ 80cm土层内 ,约占总量 91.32 % ,80cm土层以下仅约为总量的 8.6 8%左右 ,根长密度随土层深度的变化 ,呈负指数函数分布 ;在水平方向上 ,主要分布为距果树行带 0～ 10 0cm范围内 ,石榴吸水根根量约占总量的 76 .0 7% ,而距果树行带 10 0～ 2 5 0cm时其只占总量的 2 3.93%。

The spatial distribution characteristics of fine roots of Punica granatum tree in the hilly area of Taihang Mountain were analyzed.The main results showed that vertically,the fine roots concentrated at the 0～80 cm soil zone where the amount of the fine roots accounted for 91.32% of the total,and varied with the soil depth in a negative exponent curve;horizontally,the amount of the fine root in the zone to 0～100 cm and 100～250 cm from the tree row accounted for 76.07% and 23.93% of the total respectively.