Green manuring combined with optimal water management achieves a triple-win for paddy soil quality, rice productivity, and environmental benefits
文献类型： 外文期刊
作者： Zhou, Guopeng 1 ; Ma, Zhengbo 2 ; Han, Shang 4 ; Chang, Danna 2 ; Sun, Jinxin 2 ; Liu, Han 5 ; Zhou, Guodong 6 ; Ma, Qingxu 7 ; Liu, Jia 5 ; Wu, Ji 4 ; Chadwick, David R. 3 ; Jones, Davey L. 3 ; Cao, Weidong 2 ;
作者机构： 1.Anhui Agr Univ, Coll Resources & Environm, Anhui Prov Engn & Technol Res Ctr Intelligent Manu, Anhui Prov Key Lab Farmland Ecol Conservat & Nutri, Hefei 230036, Peoples R China
2.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, State Key Lab Efficient Utilizat Arable Land China, Beijing 100081, Peoples R China
3.Bangor Univ, Sch Environm & Nat Sci, Bangor LL57 2UW, Gwynedd, Wales
4.Anhui Acad Agr Sci, Soil & Fertilizer Inst, Key Lab Nutrient Cycling & Arable Land Conservat A, Natl Agr Expt Stn Soil Qual, Hefei 230001, Peoples R China
5.Jiangxi Acad Agr Sci, Soil & Fertilizer & Resources & Environm Inst, Nanchang 330200, Peoples R China
6.Hohai Univ, Coll Agr Sci & Engn, Nanjing 210098, Peoples R China
7.Zhejiang Univ, Coll Environm & Resource Sci, Zhejiang Prov Key Lab Agr Resources & Environm, Hangzhou 310058, Peoples R China
关键词： Green manure; Delayed flooding; Soil quality index; Environment footprint; Net ecosystem economic budget
期刊名称：AGRICULTURE ECOSYSTEMS & ENVIRONMENT （ 影响因子：6.4； 五年影响因子：6.8 ）
ISSN： 0167-8809
年卷期： 2025 年 383 卷
页码：
收录情况： SCI
摘要： Green manuring significantly increased rice yield and soil carbon (C) stocks, however, improper farming practices may result in elevated methane (CH4) emissions. This study investigated the effects of optimizing water management after green manure incorporation on soil quality index (SQI), rice productivity, C Footprint, net ecosystem economic budget (NEEB), and comprehensive evaluation index (CEI) over a 2-year period in a ricegreen manure rotation system. A field experiment was conducted including five treatments: winter fallow-rice (WF) and green manure-single rice rotation combined with 0, 5, 10, and 15 days of delayed flooding after green manure incorporation (GM, GM-WM5, GM-WM10, GM-WM15). Compared with WF, green manuring treatments enhanced rice productivity and SQI. Delayed flooding following green manure incorporation achieved CH4 emission levels equal to or lower than those from WF, with emissions reduced by 37.7 %-76.1 % relative to GM. C Footprint and yield-scaled C Footprint lowered respectively from 43.9 t CO2-eq ha(-1) and 2.7 kg CO2-eq kg(-1) in GM to 9.8 -26.1 t CO2-eq ha(-1) and 0.6 (-1).6 kg CO2-eq kg(-1) in delayed flooding managements, while NEEB increased by 1594 -2340 CNY ha- 1 compared with GM. CEI showed the trend of WF < GM < GMWM15 < GM-WM5 < GM-WM10. In conclusion, delayed flooding practice, especially delayed by 10 days after incorporating green manure, achieved a triple-win scenario for soil quality, rice productivity, and environmental benefits compared with traditional water management practices.
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