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Improvement of Saline Soil Properties and Brassica rapa L. Growth Using Biofertilizers

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  • Rui Li

    (Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
    University of Chinese Academy of Sciences, Beijing 100049, China)

  • Bo Sun

    (Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
    University of Chinese Academy of Sciences, Beijing 100049, China)

  • Manjiao Song

    (Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
    University of Chinese Academy of Sciences, Beijing 100049, China)

  • Gaojun Yan

    (Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
    University of Chinese Academy of Sciences, Beijing 100049, China)

  • Qing Hu

    (University of Chinese Academy of Sciences, Beijing 100049, China
    Xiongan Innovation Institute, Xiongan New Area, Xiongan 071000, China)

  • Zhihui Bai

    (Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
    University of Chinese Academy of Sciences, Beijing 100049, China
    Xiongan Innovation Institute, Xiongan New Area, Xiongan 071000, China)

  • Jiancheng Wang

    (Binzhou Institute of Technology, Weiqiao-UCAS Science and Technology Park, Binzhou 256606, China)

  • Xuliang Zhuang

    (Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
    University of Chinese Academy of Sciences, Beijing 100049, China
    Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China)

Abstract

The decline in agricultural productivity because of soil salinization has become a global problem in recent years. Biofertilizers show great potential for soil improvement as a sustainable strategy; however, their effectiveness in improving saline soils and enhancing plant growth under saline stress is poorly understood. We assessed the effectiveness of biofertilizers in improving saline soils and enhancing crop growth under saline stress and investigated the related potential mechanisms. Changes in soil physicochemical properties, plant physiological parameters, and soil microbial communities were analyzed using pot experiments. The results showed that biofertilizer application reduced total soluble salts in the soil by 30.8% and increased Brassica rapa L. biomass by 8.4 times. Biofertilizer application increased soil organic matter, total nitrogen, and available phosphorus by 56.1%, 57.0%, and 290%, respectively. Simultaneously, superoxide dismutase, catalase, chlorophyll a, chlorophyll b, total soluble sugar, and proline levels also increased by 89.5%, 140%, 110%, 190%, and 130%, respectively. Biofertilizers increased the abundance of Bacillus and Planococcus and decreased the abundance of Mortierella and Aspergillus, which could potentially be the underlying reason for the promotion of plant growth. Overall, the results of this study demonstrate the efficacy of biofertilizers in improving saline soils and that the application of biofertilizer could greatly promote agricultural production.

Suggested Citation

  • Rui Li & Bo Sun & Manjiao Song & Gaojun Yan & Qing Hu & Zhihui Bai & Jiancheng Wang & Xuliang Zhuang, 2024. "Improvement of Saline Soil Properties and Brassica rapa L. Growth Using Biofertilizers," Sustainability, MDPI, vol. 16(5), pages 1-17, March.
    • Handle: RePEc:gam:jsusta:v:16:y:2024:i:5:p:2196-:d:1352166
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    References listed on IDEAS

    as
    1. Yong Li & Jiejie Zhang & Jianqiang Zhang & Wenlai Xu & Zishen Mou, 2019. "Characteristics of Inorganic Phosphate-Solubilizing Bacteria from the Sediments of a Eutrophic Lake," IJERPH, MDPI, vol. 16(12), pages 1-15, June.
    2. Richard D. Bardgett & Wim H. van der Putten, 2014. "Belowground biodiversity and ecosystem functioning," Nature, Nature, vol. 515(7528), pages 505-511, November.
    3. Aadhityaa Mohanavelu & Sujay Raghavendra Naganna & Nadhir Al-Ansari, 2021. "Irrigation Induced Salinity and Sodicity Hazards on Soil and Groundwater: An Overview of Its Causes, Impacts and Mitigation Strategies," Agriculture, MDPI, vol. 11(10), pages 1-17, October.
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