文章摘要
何娜娜, 贾如浩, 叶苗泰, 赵西宁, 高晓东.黄土高原旱地苹果园油菜间作对土壤大孔隙结构的影响[J].水土保持学报,2021,35(1):259~264
黄土高原旱地苹果园油菜间作对土壤大孔隙结构的影响
Effect of Rape Intercropping on Soil Macropore Structure in Dryland Apple Orchard of the Loess Plateau
投稿时间:2020-06-05  
DOI:10.13870/j.cnki.stbcxb.2021.01.037
中文关键词: 大孔隙  油菜间作  土壤结构  X-ray CT  黄土高原
英文关键词: macropore  rape intercropping  soil structure  X-ray CT  the Loess Plateau
基金项目:国家重点研发计划项目(2016YFC0400204);国家自然科学基金项目(41771316)
作者单位E-mail
何娜娜1, 贾如浩3, 叶苗泰1, 赵西宁1,2, 高晓东1,2 1. 西北农林科技大学水土保持研究所, 陕西 杨凌 712100

2. 中国科学院水利部水土保持研究所
, 陕西 杨凌 712100

3. 西北农林科技大学水利与建筑工程学院
, 陕西 杨凌 712100 
gao_xiaodong@nwafu.edu.cn 
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中文摘要:
      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。
英文摘要:
      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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