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Chinese Agricultural Science Bulletin ›› 2025, Vol. 41 ›› Issue (23): 74-83.doi: 10.11924/j.issn.1000-6850.casb2025-0349

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Research on Effect of Agricultural Waste Returning to Field on Reducing Carbon Emissions, Increasing Carbon Sink and Improving Soil: Taking TCMR + Straw as An Example

LIU Shiliang1(), WANG Yu2, GUAN Xiujing2, ZHANG Dongbo2, XU Li3, ZHOU Mengmeng4, XIA Wei2()   

  1. 1 Hedong District Agricultural and Rural Development Service Center of Linyi, Linyi, Shandong 276034
    2 Agro-environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191
    3 Tianjin Huanke Environmental Technology Co., Ltds, Tianjin 300191
    4 Yucheng Agriculture and Rural Bureau, Dezhou City, Dezhou, Shandong 251200
  • Received:2025-04-25 Revised:2025-07-15 Online:2025-08-19 Published:2025-08-19

Abstract:

Agricultural carbon reduction and sink increase is a key strategy to cope with climate change. Straw returning is one of the most effective methods for sequestering carbon in soil. However, the conventional straw returning methods currently used in China are often associated with the occurrence of soil-borne diseases and pests, and their carbon sequestration performance lacks stability. Therefore, this study innovatively proposed the synergistic returning mode of Traditional Chinese Medicinal Residues (TCMR) and straw, aiming to clarify its synergistic mechanism, which using TCMR to effectively inhibit soil-borne pests and diseases caused by straw returning, and synergistically optimize soil nutrient structure, so as to improve carbon sequestration efficiency. This study mainly used the method of literature review and case analysis to systematically sort out the current situation of soil application of TCMR and its impact on crop growth, and focused on evaluating the potential of this synergistic returning mode in alleviating greenhouse gas emissions and enhancing farmland soil carbon sink capacity. The results showed that the combined application of TCMR and straw could significantly increase soil organic matter content, effectively improve acidified and saline-alkali soil, and promote crop yield and quality. As a major producer of straw and Chinese medicinal materials, the promotion of this technology can realize the large-scale resource utilization of two kinds of agricultural solid wastes and provide an innovative path for waste recycling. Their combined capacity for carbon emission reduction, carbon sequestration, and soil improvement is also of significant importance for achieving China’s “dual carbon” goals and promoting the sustainable development of agriculture, with the potential to simultaneously enhance crop yields and improve ecological quality.

Key words: TCMR, straw return, carbon reduction and carbon sequestration increase, soil improvement