南京林业大学学报(自然科学版) ›› 2004, Vol. 28 ›› Issue (04): 89-91.doi: 10.3969/j.jssn.1000-2006.2004.04.021

• 研究论文 • 上一篇    下一篇

石榴树吸水根根系空间分布特征

张劲松;孟平   

  1. 中国林业科学研究院林业研究所;北京100091;中国林业科学研究院林业研究所;北京100091
  • 出版日期:2004-08-18 发布日期:2004-08-18

Spatial Distribution Characteristics of Fine Roots of Pomegranate Tree

ZHANG Jin-song,MENG Ping   

  1. Research Institute of Forestry,CAF,Beijing 100091,China
  • Online:2004-08-18 Published:2004-08-18

摘要: <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%。

Abstract: 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.

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