Effect of Rape Intercropping on Soil Macropore Structure in Dryland Apple Orchard of the Loess Plateau

HE Nana; JIA Ruhao; YE Miaotai; ZHAO Xining; GAO Xiaodong

doi:10.13870/j.cnki.stbcxb.2021.01.037

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Effect of Rape Intercropping on Soil Macropore Structure in Dryland Apple Orchard of the Loess Plateau

更新时间：2025-03-12

- Effect of Rape Intercropping on Soil Macropore Structure in Dryland Apple Orchard of the Loess Plateau
- Vol. 35, Issue 1, Pages: 259-264(2021)
- 作者机构：
  
  1. 西北农林科技大学水土保持研究所, 陕西杨凌,712100
  2. 西北农林科技大学水利与建筑工程学院, 陕西杨凌,712100
  3. 中国科学院水利部水土保持研究所, 陕西杨凌,712100
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2021.01.037
  CLC： S152.4
- Published：2021
- 稿件说明：
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HE Nana, JIA Ruhao, YE Miaotai, et al. Effect of Rape Intercropping on Soil Macropore Structure in Dryland Apple Orchard of the Loess Plateau[J]. 2021, 35(1): 259-264.
DOI：

HE Nana, JIA Ruhao, YE Miaotai, et al. Effect of Rape Intercropping on Soil Macropore Structure in Dryland Apple Orchard of the Loess Plateau[J]. 2021, 35(1): 259-264. DOI： 10.13870/j.cnki.stbcxb.2021.01.037.

摘要

采用X-ray computed tomography（CT）技术研究了果树行间不同油菜间作密度（CK：清耕；L：低密度间作；M：中密度间作；H：高密度间作）对土壤大孔隙特征参数的影响。结果表明：油菜间作改善了果树行间（0—60 cm）土壤大孔隙特征，各土层的土壤大孔隙数量、大孔隙面积、大孔隙度等参数分别较清耕显著提高（P<0.05）；不同间作密度对土壤大孔隙的作用不同，除10—20 cm外，中密度间作对土壤大孔隙度的改善效果均显著好于其他处理；中密度处理下大孔隙（d > 1 mm）在各土层间的数目多、差异小，并且在0—30 cm土壤剖面上的成圆率最高。中、高密度油菜间作的土壤大孔隙特征参数均优于清耕及低密度间作，而中密度间作的土壤大孔隙分布更均匀、形状更规则，是黄土高原旱地苹果园改善土壤结构的适宜间作密度。

Abstract

The X-ray computed tomography (CT) technique was used to study the effects of different rape intercropping densities (CK: clean tillage; L: low-density intercropping; M: medium-density intercropping; H: high-density intercropping) on the characteristics of soil macropores in the apple orchard. The results showed that compared with the CK

rape intercropping improved the characteristics of soil macropores between rows of apple trees (0—60 cm)

and the number of soil macropores

macropores' area and macro porosity in each soil layer were significantly higher (P<0.05). The effects of different intercropping densities on the macropores were different in the same soil layer

except for 10-20 cm

the improvement effect of the medium-density intercropping on soil macro porosity was significantly better than that of other treatments. Under the medium-density treatment

the number of macropores (d > 1 mm) was large

and the difference in macropores number between soil layers was small

and the rounding rate was the highest in 0-30 cm soil profile. The soil macropore characteristic parameters of medium and high-density rape intercropping were better than those of the clean tillage and low-density treatments

and that in the medium-density intercropping treatment

the distribution of macropores was more uniform and the shape was more regular

which was an appropriate intercropping density to improve soil structure for dryland apple orchards in the Loess Plateau.

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