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Efficacy Evaluation of Civil-Works Mud as Soil Matrix Modified by Organic Amendments

Author

Listed:
  • Yuan Su

    (School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China)

  • Qian Zhang

    (College of Agriculture, Guangxi University, Nanning 530004, China)

  • Junwei Tang

    (School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China)

  • Juanjuan Yin

    (School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China)

  • Kai Zhong

    (College of Agriculture, Guangxi University, Nanning 530004, China)

  • Jingying Gu

    (School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China)

  • Zicong Xiong

    (School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China)

  • Haile Wu

    (Guangxi Qinghui Environmental Protection Technology Co., Ltd., Chongzuo 532100, China)

  • Xingzhi Pang

    (School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China)

  • Chaolan Zhang

    (School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China)

Abstract

Converting civil-works mud (CWM) into soil matrix is a significant method for resource utilization, effectively mitigating CWM accumulation. In this study, CWM was utilized as a soil matrix and modified with three organic materials: pig manure, biochar, and corn straw. Field experiments were conducted using pig manure (PM), pig manure combined with biochar (PMB), and pig manure combined with straw (PMC), with the total organic matter content of the amendments applied in each treatment maintained at a consistent level. The physicochemical properties and soil matrix microbial biomass for all treatments were determined at the time of corn harvest. Additionally, the soil quality index (SQI) was calculated to evaluate the effectiveness of the various treatments. The results indicated that the addition of organic amendments significantly enhanced the physicochemical and soil microbial properties of soil matrix, significantly increasing the crop yield. Among the treatments, the application of pig manure combined with biochar (PMB) significantly improved the quality of soil matrix, with the SQI increasing by 65.2 times compared to soil matrix. This treatment achieved a crop yield of 5525 kg/ha, and the safety of the crops in all treatments complied with the National Food Safety Standard Limits of Contaminants in Foods. This study proposes a novel and feasible approach for the resource utilization of CWM, and the improved soil matrix can help alleviate the increasing issue of soil resource scarcity.

Suggested Citation

  • Yuan Su & Qian Zhang & Junwei Tang & Juanjuan Yin & Kai Zhong & Jingying Gu & Zicong Xiong & Haile Wu & Xingzhi Pang & Chaolan Zhang, 2025. "Efficacy Evaluation of Civil-Works Mud as Soil Matrix Modified by Organic Amendments," Agriculture, MDPI, vol. 15(10), pages 1-15, May.
    • Handle: RePEc:gam:jagris:v:15:y:2025:i:10:p:1056-:d:1655008
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    References listed on IDEAS

    as
    1. Lucio Di Matteo & Lorenzo Bulletti & Eliana Capecchi & Antonio La Viola & Davide Piccinino & Vincenzo Piscopo, 2020. "Perspectives of Using Lignin as Additive to Improve the Permeability of In-Situ Soils for Barrier Materials in Landfills," Sustainability, MDPI, vol. 12(12), pages 1-14, June.
    2. Cheng Ren & Kesi Liu & Pengpeng Dou & Jiahuan Li & Kun Wang, 2022. "The Changes in Soil Microorganisms and Soil Chemical Properties Affect the Heterogeneity and Stability of Soil Aggregates before and after Grassland Conversion," Agriculture, MDPI, vol. 12(2), pages 1-16, February.
    3. Tianyu Qin & Lan Wang & Jianshe Zhao & Gaifang Zhou & Caihong Li & Liyue Guo & Gaoming Jiang, 2022. "Effects of Straw Mulching Thickness on the Soil Health in a Temperate Organic Vineyard," Agriculture, MDPI, vol. 12(11), pages 1-14, October.
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