您好，欢迎访问安徽省农业科学院 机构知识库！

Variable responses of soil pore structure to organic and inorganic fertilization in a Vertisol

文献类型： 外文期刊

作者： Ruan, Renjie 1 ; Zhang, Zhongbin 2 ; Tu, Renfeng 1 ; Wang, Yuekai 2 ; Xiong, Peng 2 ; Li, Wei 3 ; Chen, Huan 3 ;

作者机构： 1.Anhui Agr Univ, Sch Resources & Environm, Hefei, Peoples R China

2.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, 71 East Beijing Rd, Nanjing, Peoples R China

3.Anhui Acad Agr Sci, Hefei, Peoples R China

关键词： long-term fertilization; computed tomography; pore characteristics; air permeability; penetration resistance

期刊名称：INTERNATIONAL AGROPHYSICS （ 影响因子：2.317； 五年影响因子：2.244 ）

ISSN： 0236-8722

年卷期： 2021 年 35 卷 2 期

页码：

收录情况： SCI

摘要： Soil pore structure may become highly variable under different fertilization regimes. This study aims to identify the impacts of long-term fertilization on the soil pore characteristics in a Vertisol and their relationships with water-holding capacity, air permeability and penetration resistance, using X-ray computed tomography. Intact soil cores were sampled from a long-term (37 years) continuous fertilization experiment including treatments with no fertilization (Control), inorganic fertilization, and organic fertilization. The basic soil properties, the three-dimensional characteristics of the macropores, water-holding capacity, air permeability and penetration resistance were all analysed. The results show that, in comparison with the control, the organic fertilization treatment resulted in increased total porosity, macroporosity and porosity with a diameter >1000 tun, this was probably due to the increased soil organic carbon content and aggregate stability. The inorganic fertilization treatment had a lower macropore connectivity, air permeability and higher penetration resistance relative to the control, a probable explanation is the decreased aggregate stability resulting from a large amount of dispersing ions in the inorganic fertilizers. Air permeability was positively correlated with macropore connectivity, while water-holding capacity and penetration resistance had no relationship with macropore characteristics. Our findings demonstrate that long-term organic fertilization can improve the macroporosity of Vertisol, while long-term inorganic fertilization has a detrimental effect on soil macropore connectivity.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：安徽省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台