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Effect of Buried Straw Bioreactor Technology on CO 2 Efflux and Indian Cowpea Yields

Author

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  • Cenwei Liu

    (Institute of Resources, Environment and Soil Fertilizer, Fujian Academy of Agricultural Sciences, Fuzhou 350003, China
    Fujian Province Key Laboratory of Agro-Ecological Processes in Hilly Red Soil, Fuzhou 350003, China)

  • Jing Ye

    (Institute of Resources, Environment and Soil Fertilizer, Fujian Academy of Agricultural Sciences, Fuzhou 350003, China
    Fujian Province Key Laboratory of Agro-Ecological Processes in Hilly Red Soil, Fuzhou 350003, China)

  • Bangwei Zhang

    (Department of Plant, Food, and Environmental Sciences, Dalhousie University, Truro, NS B2N 5E3, Canada)

  • Yi Lin

    (Institute of Resources, Environment and Soil Fertilizer, Fujian Academy of Agricultural Sciences, Fuzhou 350003, China
    Fujian Province Key Laboratory of Agro-Ecological Processes in Hilly Red Soil, Fuzhou 350003, China)

  • Yixiang Wang

    (Institute of Resources, Environment and Soil Fertilizer, Fujian Academy of Agricultural Sciences, Fuzhou 350003, China
    Fujian Province Key Laboratory of Agro-Ecological Processes in Hilly Red Soil, Fuzhou 350003, China)

Abstract

This study evaluates the efficacy of buried straw bioreactor (SBR) technology in enhancing soil properties, CO 2 efflux, and crop yield, specifically focusing on Indian cowpea cultivation within a greenhouse environment. Conducted at the Yuxi Demonstration Park in Fujian, China, the experiment utilized a randomized block design incorporating seven treatments with varying straw application rates (4.5, 6, and 7.5 kg m −2 ) and burial depths (20 and 30 cm) alongside a control group. The investigation revealed that SBR technology significantly increased soil temperature, CO 2 efflux, soil total nitrogen (TN), and total organic carbon (TOC), contributing to a marked improvement in the biomass of Indian cowpea roots, stems, and leaves. Notably, the optimal results were observed with 7.5 kg m −2 straw applied at a 20 cm depth, enhancing soil temperature by 1.5–2.0 °C and multiplying cowpea biomass by 2.1–6.4 times relative to the control. This treatment also led to the highest increases in soil TOC and CO 2 efflux, demonstrating the potential of SBR technology for carbon sequestration and suggesting its application as a sustainable agricultural practice in cold regions to ameliorate the soil’s physical and nutritional characteristics, thus supporting enhanced crop production. The study underscores SBR technology’s role in addressing the challenge of agricultural waste through the effective reuse of crop straw, promoting the circular development of agriculture while safeguarding the ecological environment.

Suggested Citation

  • Cenwei Liu & Jing Ye & Bangwei Zhang & Yi Lin & Yixiang Wang, 2024. "Effect of Buried Straw Bioreactor Technology on CO 2 Efflux and Indian Cowpea Yields," Agriculture, MDPI, vol. 14(7), pages 1-13, July.
    • Handle: RePEc:gam:jagris:v:14:y:2024:i:7:p:1072-:d:1428114
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    References listed on IDEAS

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    1. Cao, Yune & Tian, Yongqiang & Gao, Lihong & Chen, Qingyun, 2016. "Attenuating the negative effects of irrigation with saline water on cucumber (Cucumis sativus L.) by application of straw biological-reactor," Agricultural Water Management, Elsevier, vol. 163(C), pages 169-179.
    2. Wenchen SONG & Xiaojuan TONG & Jinsong ZHANG & Ping MENG & Jun LI, 2017. "Autotrophic and heterotrophic components of soil respiration caused by rhizosphere priming effects in a plantation," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 63(7), pages 295-299.
    3. He, Ke & Zhang, Junbiao & Zeng, Yangmei, 2018. "Rural households' willingness to accept compensation for energy utilization of crop straw in China," Energy, Elsevier, vol. 165(PA), pages 562-571.
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