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林业科学 ›› 2002, Vol. 38 ›› Issue (4): 30-33.doi: 10.11707/j.1001-7488.20020405

• 论文及研究报告 • 上一篇    下一篇

果农复合系统中果树根系空间分布特征

张劲松 孟平 尹昌君   

  1. 中国林业科学研究院林业研究所,北京100091
  • 收稿日期:2002-03-20 修回日期:1900-01-01 出版日期:2002-07-25 发布日期:2002-07-25

SPATIAL DISTRIBUTION CHARACTERISTICS OF APPLE TREE ROOTS IN THE APPLE-WHEAT INTERCROPPING

Zhang Jinsong,Meng Ping,Yin Changjun   

  1. Research Institute of Forestry, CAF Beijing100091
  • Received:2002-03-20 Revised:1900-01-01 Online:2002-07-25 Published:2002-07-25

摘要:

本文对太行山低山丘陵区苹果 小麦复合系统果树吸水根根系空间分布特征进行研究,以期为苹麦复合系统苹果根系吸水运移模型的建立及水分生态特征的分析提供基础资料。结果表明:垂直方向上,苹果吸水根根量主要集中0~80cm土层内,约占总量94.33% ,且0~40cm所占比例较大,达63.76% ,80cm土层以下仅约为总量的5.67%左右;在水平方向上,分布在林带区和作物区内各占39.71%和60.29%,其中作物区内的根量主要集中在40~120cm带距范围内,约占作物区内的74.7% ;吸水根根长密度(RD:cm·cm-3)与距果树带距离(X:cm)、土壤深度(Z:cm)的关系方程式可表达为:RD=- 6.617×10-9Z4+1.8149×10-6Z3-1.7526×10-4Z2+4.9418×10-3Z-5.83×10-7X2+ -2.16×10-5X+1.1299ZX+0.06359,复相关系数r=0.8647。

关键词: 苹果小麦复合系统, 苹果吸水根, 空间分布特征

Abstract:

The spatial distribution characteristics of apple tree fine roots in the apple-wheat intercropping were analyzed in order to provide the basic documents for constructing the model of water uptake by roots and analyzing the water ecological characteristics of the inter cropping in the hilly area of Taihang Mountain. 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 94.33% of the total; horizontally, the amount of the fine root in the wheat zone and the tree land accounted for 60 29% and 39.71% of the total respectively;the regression function between the fine roots density(RD:cm·cm-3) , the soil depth (Z:cm) and the distance from the tree row (X:cm)was the following: RD=- 6.617×10-9Z4+1.8149×10-6Z3-1.7526×10-4Z2+4.9418×10-3Z-5.83×10-7X2+ -2.16×10-5X+1.1299ZX+0.06359,r=0.8647.

Key words: Apple-wheat intercropping, Fine roots of apple tree, Spatial distribution characteristics