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Improving Soil Properties by Sand Application in the Saline-Alkali Area of the Middle and Lower Reaches of the Yellow River, China

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  • Jian Wang

    (Key Laboratory of Degraded and Unused Land Consolidation Engineering, The Ministry of Nature and Resources, Xi’an 710021, China
    Institute of Land Engineering and Technology, Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Xi’an 710021, China)

  • Chenxi Yang

    (Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Xi’an 710075, China)

  • Haiou Zhang

    (Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Xi’an 710075, China)

  • Juan Li

    (Key Laboratory of Degraded and Unused Land Consolidation Engineering, The Ministry of Nature and Resources, Xi’an 710021, China
    Institute of Land Engineering and Technology, Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Xi’an 710021, China)

Abstract

Excessive soil salinity is a problem that makes soil unusable for agriculture, and most current research focuses on either chemical supplements or water conservation measures. Nevertheless, more information is needed about how sand treatment affects soil quality. In this study, a field experiment assessed the effect of sand application and cropping year on soil properties in an arid and semi-arid saline-sodic agricultural ecosystem. We found that sand application significantly improved the saline–alkali soil’s physical (i.e., pH, EC, TSC, BD), chemical (i.e., OC, AN, AP), and enzyme activity (i.e., Amy, Ure, Alp, Cat) properties, and that soil AN, AP, as well as TSC, were the crucial factors affecting soil properties. Simultaneously, soil properties gradually improved along with increasing cropping years, although these increases gradually became small. Our findings highlight the potential of sand as a soil supplement to enhance soil quality and structure in semi-arid agricultural ecosystems, especially when considering the cost.

Suggested Citation

  • Jian Wang & Chenxi Yang & Haiou Zhang & Juan Li, 2023. "Improving Soil Properties by Sand Application in the Saline-Alkali Area of the Middle and Lower Reaches of the Yellow River, China," Sustainability, MDPI, vol. 15(12), pages 1-14, June.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:12:p:9437-:d:1169268
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    References listed on IDEAS

    as
    1. Qing Zhao & Jie Tang & Zhaoyang Li & Wei Yang & Yucong Duan, 2018. "The Influence of Soil Physico-Chemical Properties and Enzyme Activities on Soil Quality of Saline-Alkali Agroecosystems in Western Jilin Province, China," Sustainability, MDPI, vol. 10(5), pages 1-15, May.
    2. Sining Wang & Jie Tang & Zhaoyang Li & Yuqing Liu & Zihao Zhou & Jingjing Wang & Yunke Qu & Zhenxue Dai, 2020. "Carbon Mineralization under Different Saline—Alkali Stress Conditions in Paddy Fields of Northeast China," Sustainability, MDPI, vol. 12(7), pages 1-17, April.
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