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Effects of Super-Absorbent Polymer on Soil Remediation and Crop Growth in Arid and Semi-Arid Areas

Author

Listed:
  • Fang Yang

    (State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China)

  • Rui Cen

    (Department of Irrigation and Drainage, China Institute of Water Resources and Hydropower Research, Beijing 100089, China)

  • Weiying Feng

    (School of Space and Environment, Beihang University, Beijing 100191, China
    Beijing Advanced Innovation Center for Big Data-Based Precision Medicine, Beihang University, Beijing 100191, China)

  • Jing Liu

    (Environment Research Institute, Shandong University, Qingdao 266237, China)

  • Zhongyi Qu

    (College of Water Conservancy and Civil Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China)

  • Qingfeng Miao

    (College of Water Conservancy and Civil Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China)

Abstract

The water-retaining and yield-increasing capacity of super-absorbent polymer (SAP) are essential for soil remediation in arid and semi-arid areas. Therefore, it is of great significance to investigate the influencing factors and mechanisms of SAP effects on soil environments and crop growth for the precise management of agricultural water-saving irrigation. In this study, we adopted SAP as a soil conditioner and monitored changes in soil temperature, photosynthetic rate, leaf transpiration rate, chlorophyll, crop growth indexes (plant height, stem diameter, leaf area index, dry matter accumulation), and yield under different SAP doses during the growth stage of maize, on the basis of which the improvement mechanism of SAP in arid and semi-arid soil was analyzed. The results demonstrated the following: (1) 45 kg/hm 2 of SAP application could increase the temperature of the soil layer, effectively reduce the diurnal temperature variation of the soil surface, and promote the stable growth of maize; (2) when different SAP doses were applied, the leaf surface temperature of maize increased by 0.95 °C on average. In particular, when 135 kg/hm 2 of SAP was applied, the leaf surface temperature increased by 1.55 °C; (3) SAP could promote the photosynthetic rate of maize. In addition, the plant height, leaf area index, and dry matter accumulation of maize gradually increased with an increasing amount of SAP; (4) the application of SAP not only increased the grain row number, ear row number, and average 100-seed weight, but also increased the crop yield by nearly 6%. The application of SAP demonstrated a comprehensive utility (redistribution of soil water and temperature, synergy between SAPs and plants), which suggests that the most basic goal, to ensure socio-economic and ecological sustainability in dryland systems, was obtained.

Suggested Citation

  • Fang Yang & Rui Cen & Weiying Feng & Jing Liu & Zhongyi Qu & Qingfeng Miao, 2020. "Effects of Super-Absorbent Polymer on Soil Remediation and Crop Growth in Arid and Semi-Arid Areas," Sustainability, MDPI, vol. 12(18), pages 1-13, September.
    • Handle: RePEc:gam:jsusta:v:12:y:2020:i:18:p:7825-:d:417318
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    References listed on IDEAS

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    Cited by:

    1. Zhao, Chenhao & Zhang, Lina & Zhang, Qiang & Wang, Jun & Wang, Shengsen & Zhang, Min & Liu, Zhiguang, 2022. "The effects of bio-based superabsorbent polymers on the water/nutrient retention characteristics and agricultural productivity of a saline soil from the Yellow River Basin, China," Agricultural Water Management, Elsevier, vol. 261(C).
    2. Hazem S. Elshafie & Ippolito Camele, 2021. "Applications of Absorbent Polymers for Sustainable Plant Protection and Crop Yield," Sustainability, MDPI, vol. 13(6), pages 1-12, March.
    3. Weiying Feng & Jiayue Gao & Rui Cen & Fang Yang & Zhongqi He & Jin Wu & Qingfeng Miao & Haiqing Liao, 2020. "Effects of Polyacrylamide-Based Super Absorbent Polymer and Corn Straw Biochar on the Arid and Semi-Arid Salinized Soil," Agriculture, MDPI, vol. 10(11), pages 1-17, November.
    4. Zheng, Huifang & Mei, Peipei & Wang, Wending & Yin, Yulong & Li, Haojie & Zheng, Mengyao & Ou, Xingqi & Cui, Zhenling, 2023. "Effects of super absorbent polymer on crop yield, water productivity and soil properties: A global meta-analysis," Agricultural Water Management, Elsevier, vol. 282(C).

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