Nitrogen reduction with green manure roots return maintains spring wheat yield and alleviates soil N2O emission in saline-alkali agroecosystem
The growing global demand for grain drives a greater need for nitrogen (N) input. Yet, it contributes to nitrous oxide (N2O) emissions, aggravating global climate change. To tackle this dual challenge of fulfilling crop demands while maintaining or reducing N2O emissions, a field study was performed...
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Elsevier
2025-06-01
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| Series: | Resources, Environment and Sustainability |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666916125000143 |
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| author | Fangdi Chang Hongyuan Zhang Peiyi Zhao Na Zhao Jiashen Song Ru Yu Jing Wang Xiquan Wang Dongxun Han Hanjiang Liu Jie Zhou Yuyi Li |
| author_facet | Fangdi Chang Hongyuan Zhang Peiyi Zhao Na Zhao Jiashen Song Ru Yu Jing Wang Xiquan Wang Dongxun Han Hanjiang Liu Jie Zhou Yuyi Li |
| author_sort | Fangdi Chang |
| collection | DOAJ |
| description | The growing global demand for grain drives a greater need for nitrogen (N) input. Yet, it contributes to nitrous oxide (N2O) emissions, aggravating global climate change. To tackle this dual challenge of fulfilling crop demands while maintaining or reducing N2O emissions, a field study was performed in wheat-green manure cropping system to assess the effects of varying fertilizer application (N100, N90 and N80: N fertilizer reduced by 0%, 10% and 20%) combined with green manure return strategy (GMR: green manure roots return, GMRS: green manure roots and shoots return), and wheat fallow after harvest (CK) on wheat yield and yield stability from 2020 to 2024, N2O emissions, as well as N2O emission intensity from 2022 to 2024. Results showed that, although N fertilizer combined with green manure return strategy increased spring wheat yield by 8%–22% by increasing soil mineral N contents, it decreased yield stability compared with CK. Soil N2O emissions were mainly negatively and positively regulated by pH and NO3−-N content in saline-alkali soil, respectively. N80 decreased cumulative soil N2O emission and N2O intensity by 20% and 10% compared with N100, respectively. Irrespective of the variations in N fertilizer levels, GMR decreased cumulative N2O emission and N2O intensity by 20%–34% and 22%–38% compared with GMRS, respectively. Overall, the findings highlighted N fertilizer reduced by 20% (160 kg N ha −1) with green manure roots returned in relative to normal rate (200 kg N ha −1) is a viable option to ensure spring wheat yield and alleviate soil N2O emission in saline-alkali agroecosystem. |
| format | Article |
| id | doaj-art-01f7ffe96d4240b5aa9cc2440b1bf2c0 |
| institution | OA Journals |
| issn | 2666-9161 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Resources, Environment and Sustainability |
| spelling | doaj-art-01f7ffe96d4240b5aa9cc2440b1bf2c02025-08-20T02:35:57ZengElsevierResources, Environment and Sustainability2666-91612025-06-012010020210.1016/j.resenv.2025.100202Nitrogen reduction with green manure roots return maintains spring wheat yield and alleviates soil N2O emission in saline-alkali agroecosystemFangdi Chang0Hongyuan Zhang1Peiyi Zhao2Na Zhao3Jiashen Song4Ru Yu5Jing Wang6Xiquan Wang7Dongxun Han8Hanjiang Liu9Jie Zhou10Yuyi Li11State Key Laboratory of Efficient Utilization of Arable Land in China, the Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China; College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, PR ChinaState Key Laboratory of Efficient Utilization of Arable Land in China, the Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, PR ChinaInner Mongolia Academy of Agricultural and Animal Husbandry Sciences, Hohhot 010031, PR ChinaBayannur Academy of Agricultural and Animal Husbandry Sciences, Linhe 015000, PR ChinaState Key Laboratory of Efficient Utilization of Arable Land in China, the Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, PR ChinaState Key Laboratory of Efficient Utilization of Arable Land in China, the Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, PR ChinaState Key Laboratory of Efficient Utilization of Arable Land in China, the Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, PR ChinaCollege of Agronomy, Inner Mongolia Agricultural University, Hohhot 10010, PR ChinaBayannur Academy of Agricultural and Animal Husbandry Sciences, Linhe 015000, PR ChinaBayannur Academy of Agricultural and Animal Husbandry Sciences, Linhe 015000, PR ChinaCollege of Agriculture, Nanjing Agricultural University, Nanjing 210095, PR ChinaState Key Laboratory of Efficient Utilization of Arable Land in China, the Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China; Correspondence to: Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.The growing global demand for grain drives a greater need for nitrogen (N) input. Yet, it contributes to nitrous oxide (N2O) emissions, aggravating global climate change. To tackle this dual challenge of fulfilling crop demands while maintaining or reducing N2O emissions, a field study was performed in wheat-green manure cropping system to assess the effects of varying fertilizer application (N100, N90 and N80: N fertilizer reduced by 0%, 10% and 20%) combined with green manure return strategy (GMR: green manure roots return, GMRS: green manure roots and shoots return), and wheat fallow after harvest (CK) on wheat yield and yield stability from 2020 to 2024, N2O emissions, as well as N2O emission intensity from 2022 to 2024. Results showed that, although N fertilizer combined with green manure return strategy increased spring wheat yield by 8%–22% by increasing soil mineral N contents, it decreased yield stability compared with CK. Soil N2O emissions were mainly negatively and positively regulated by pH and NO3−-N content in saline-alkali soil, respectively. N80 decreased cumulative soil N2O emission and N2O intensity by 20% and 10% compared with N100, respectively. Irrespective of the variations in N fertilizer levels, GMR decreased cumulative N2O emission and N2O intensity by 20%–34% and 22%–38% compared with GMRS, respectively. Overall, the findings highlighted N fertilizer reduced by 20% (160 kg N ha −1) with green manure roots returned in relative to normal rate (200 kg N ha −1) is a viable option to ensure spring wheat yield and alleviate soil N2O emission in saline-alkali agroecosystem.http://www.sciencedirect.com/science/article/pii/S2666916125000143Soil N2OSpring wheat yieldN fertilizerGreen manureSaline-alkali soil |
| spellingShingle | Fangdi Chang Hongyuan Zhang Peiyi Zhao Na Zhao Jiashen Song Ru Yu Jing Wang Xiquan Wang Dongxun Han Hanjiang Liu Jie Zhou Yuyi Li Nitrogen reduction with green manure roots return maintains spring wheat yield and alleviates soil N2O emission in saline-alkali agroecosystem Resources, Environment and Sustainability Soil N2O Spring wheat yield N fertilizer Green manure Saline-alkali soil |
| title | Nitrogen reduction with green manure roots return maintains spring wheat yield and alleviates soil N2O emission in saline-alkali agroecosystem |
| title_full | Nitrogen reduction with green manure roots return maintains spring wheat yield and alleviates soil N2O emission in saline-alkali agroecosystem |
| title_fullStr | Nitrogen reduction with green manure roots return maintains spring wheat yield and alleviates soil N2O emission in saline-alkali agroecosystem |
| title_full_unstemmed | Nitrogen reduction with green manure roots return maintains spring wheat yield and alleviates soil N2O emission in saline-alkali agroecosystem |
| title_short | Nitrogen reduction with green manure roots return maintains spring wheat yield and alleviates soil N2O emission in saline-alkali agroecosystem |
| title_sort | nitrogen reduction with green manure roots return maintains spring wheat yield and alleviates soil n2o emission in saline alkali agroecosystem |
| topic | Soil N2O Spring wheat yield N fertilizer Green manure Saline-alkali soil |
| url | http://www.sciencedirect.com/science/article/pii/S2666916125000143 |
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