TY - JOUR
T1 - Green manuring combined with optimal water management achieves a triple-win for paddy soil quality, rice productivity, and environmental benefits
AU - Zhou, Guopeng
AU - Ma, Zhengbo
AU - Han, Shang
AU - Chang, Danna
AU - Sun, Jinxin
AU - Liu, Han
AU - Zhou, Guodong
AU - Ma, Qingxu
AU - Liu, Jia
AU - Wu, Ji
AU - Chadwick, David R.
AU - Jones, Davey L.
AU - Cao, Weidong
PY - 2025/2/6
Y1 - 2025/2/6
N2 - 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 rice-green 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
AB - 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 rice-green 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
U2 - 10.1016/j.agee.2025.109507
DO - 10.1016/j.agee.2025.109507
M3 - Article
SN - 0167-8809
VL - 383
JO - Agriculture, Ecosystems and Environment
JF - Agriculture, Ecosystems and Environment
M1 - 109507
ER -
