Greenhouse Gas Mitigation and Yield Response to Biochar-Microbial Amendment in Saline-Alkali Soil
[Objective] To investigate the effects of combined application of biochar and microbial fertilizer on greenhouse gas emissions and sunflower yield in saline-alkali soil under plastic film mulching and drip irrigation. [Methods] Field experiments were conducted in saline-alkali soil in the Hetao Irri...
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Editorial Department of Journal of Soil and Water Conservation
2025-02-01
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| Series: | Shuitu Baochi Xuebao |
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| Online Access: | http://stbcxb.alljournal.com.cn/stbcxben/article/abstract/20250129 |
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| author | QIN Jianjie YANG Wei ZHANG Ruxin ZHANG Yudi REN Enliang JI Wentao QU Zhongyi |
| author_facet | QIN Jianjie YANG Wei ZHANG Ruxin ZHANG Yudi REN Enliang JI Wentao QU Zhongyi |
| author_sort | QIN Jianjie |
| collection | DOAJ |
| description | [Objective] To investigate the effects of combined application of biochar and microbial fertilizer on greenhouse gas emissions and sunflower yield in saline-alkali soil under plastic film mulching and drip irrigation. [Methods] Field experiments were conducted in saline-alkali soil in the Hetao Irrigation Area of Inner Mongolia, with different combinations of biochar (0, 7.5, 15 t/hm2) and microbial fertilizer (0, 112.5, 225 kg/hm2). Greenhouse gas emissions were monitored using static chamber-gas chromatography method. Changes in soil physicochemical properties, global warming potential (GWP), and sunflower yield were analyzed. [Results] 1) Compared with the control (0 t/hm2 biochar+0 kg/hm2 microbial fertilizer), the treatment of 7.5 t/hm2 biochar+225 kg/hm2 microbial fertilizer increased soil organic carbon, available phosphorus, and available potassium contents by 63.9%, 155.7%, and 46.8%, respectively. 2) Compared to the control, the treatment with 7.5 t/hm2 biochar +225 kg/hm2 microbial fertilizer reduced cumulative CO2 emissions from 4 373 kg/hm2 to -394.3 kg/hm2, increased cumulative CH4 emissions from -0.08 kg/hm2 to 0.1 kg/hm2, reduced cumulative N2O emissions from 0.23 kg/hm2 to -0.09 kg/hm2, and decreased GWP from 4 438.3 kg/hm2 to -417.2 kg/hm2. 3) Under the treatment of 15 t/hm2 biochar+225 kg/hm2 microbial fertilizer, sunflower yield reached 4 137.5 kg/hm2, which was increased by 39.4% compared with the control (2 968 kg/hm2). 4) Mantel test analysis revealed that sunflower yield was extremely significantly correlated with soil physicochemical properties (p<0.01); CO2 emissions were significantly correlated with ammonium-nitrogen content and soil moisture, N2O emissions were significantly correlated with nitrate-nitrogen content, and CH4 emissions were extremely significantly correlated with nitrate-nitrogen content (p<0.05). [Conclusion] Combined application of biochar and microbial fertilizer can simultaneously improve saline-alkali soil, reduce greenhouse gas emissions, and increase sunflower yield, with 7.5 t/hm2 biochar+225 kg/hm2 microbial fertilizer being the optimal combination. This technique provides a new strategy for reducing greenhouse gas emissions in agricultural production and increasing crop yields on saline-alkali soils. |
| format | Article |
| id | doaj-art-137db68f19bd4a128796425dbd56232a |
| institution | DOAJ |
| issn | 1009-2242 |
| language | zho |
| publishDate | 2025-02-01 |
| publisher | Editorial Department of Journal of Soil and Water Conservation |
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| series | Shuitu Baochi Xuebao |
| spelling | doaj-art-137db68f19bd4a128796425dbd56232a2025-08-20T03:02:10ZzhoEditorial Department of Journal of Soil and Water ConservationShuitu Baochi Xuebao1009-22422025-02-0139127428310.13870/j.cnki.stbcxb.2025.01.0381009-2242-(2025)01-0274-10Greenhouse Gas Mitigation and Yield Response to Biochar-Microbial Amendment in Saline-Alkali SoilQIN Jianjie0YANG Wei1ZHANG Ruxin2ZHANG Yudi3REN Enliang4JI Wentao5QU Zhongyi6College of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia 014010, ChinaCollege of Grassland, Resources and Environment, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010011, ChinaCollege of Water Conservancy and Civil Engineering, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010018, ChinaCollege of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia 014010, ChinaCollege of Mining and Coal, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia 014010, ChinaCollege of Water Conservancy and Civil Engineering, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010018, ChinaCollege of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia 014010, China[Objective] To investigate the effects of combined application of biochar and microbial fertilizer on greenhouse gas emissions and sunflower yield in saline-alkali soil under plastic film mulching and drip irrigation. [Methods] Field experiments were conducted in saline-alkali soil in the Hetao Irrigation Area of Inner Mongolia, with different combinations of biochar (0, 7.5, 15 t/hm2) and microbial fertilizer (0, 112.5, 225 kg/hm2). Greenhouse gas emissions were monitored using static chamber-gas chromatography method. Changes in soil physicochemical properties, global warming potential (GWP), and sunflower yield were analyzed. [Results] 1) Compared with the control (0 t/hm2 biochar+0 kg/hm2 microbial fertilizer), the treatment of 7.5 t/hm2 biochar+225 kg/hm2 microbial fertilizer increased soil organic carbon, available phosphorus, and available potassium contents by 63.9%, 155.7%, and 46.8%, respectively. 2) Compared to the control, the treatment with 7.5 t/hm2 biochar +225 kg/hm2 microbial fertilizer reduced cumulative CO2 emissions from 4 373 kg/hm2 to -394.3 kg/hm2, increased cumulative CH4 emissions from -0.08 kg/hm2 to 0.1 kg/hm2, reduced cumulative N2O emissions from 0.23 kg/hm2 to -0.09 kg/hm2, and decreased GWP from 4 438.3 kg/hm2 to -417.2 kg/hm2. 3) Under the treatment of 15 t/hm2 biochar+225 kg/hm2 microbial fertilizer, sunflower yield reached 4 137.5 kg/hm2, which was increased by 39.4% compared with the control (2 968 kg/hm2). 4) Mantel test analysis revealed that sunflower yield was extremely significantly correlated with soil physicochemical properties (p<0.01); CO2 emissions were significantly correlated with ammonium-nitrogen content and soil moisture, N2O emissions were significantly correlated with nitrate-nitrogen content, and CH4 emissions were extremely significantly correlated with nitrate-nitrogen content (p<0.05). [Conclusion] Combined application of biochar and microbial fertilizer can simultaneously improve saline-alkali soil, reduce greenhouse gas emissions, and increase sunflower yield, with 7.5 t/hm2 biochar+225 kg/hm2 microbial fertilizer being the optimal combination. This technique provides a new strategy for reducing greenhouse gas emissions in agricultural production and increasing crop yields on saline-alkali soils.http://stbcxb.alljournal.com.cn/stbcxben/article/abstract/20250129biocharmicrobial fertilizergreenhouse gas emissionssunflower yieldsaline-alkali land |
| spellingShingle | QIN Jianjie YANG Wei ZHANG Ruxin ZHANG Yudi REN Enliang JI Wentao QU Zhongyi Greenhouse Gas Mitigation and Yield Response to Biochar-Microbial Amendment in Saline-Alkali Soil Shuitu Baochi Xuebao biochar microbial fertilizer greenhouse gas emissions sunflower yield saline-alkali land |
| title | Greenhouse Gas Mitigation and Yield Response to Biochar-Microbial Amendment in Saline-Alkali Soil |
| title_full | Greenhouse Gas Mitigation and Yield Response to Biochar-Microbial Amendment in Saline-Alkali Soil |
| title_fullStr | Greenhouse Gas Mitigation and Yield Response to Biochar-Microbial Amendment in Saline-Alkali Soil |
| title_full_unstemmed | Greenhouse Gas Mitigation and Yield Response to Biochar-Microbial Amendment in Saline-Alkali Soil |
| title_short | Greenhouse Gas Mitigation and Yield Response to Biochar-Microbial Amendment in Saline-Alkali Soil |
| title_sort | greenhouse gas mitigation and yield response to biochar microbial amendment in saline alkali soil |
| topic | biochar microbial fertilizer greenhouse gas emissions sunflower yield saline-alkali land |
| url | http://stbcxb.alljournal.com.cn/stbcxben/article/abstract/20250129 |
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