Alternate wetting and drying (AWD) for growing rice improves water productivity (WP), minimize methane emission and net ecosystem carbon balance (CO₂), but might be responsible for increased nitrous oxide emissions. The combined effects of water management and different organic manure application on methane emission, carbon dioxide and nitrous oxide fluxes, emission factor (EF) and WP are not well documented, which has been evaluated during dry seasons of 2018 and 2019. AWD and continuous flooding (CF) were imposed in NPKSZn, cowdung (CD), poultry manure (PM) and vermicompost (VC) treated plots. Closed chamber techniques were used for determining emissions of greenhouse gases. In comparison with CF, the AWD significantly reduced total GWP by 15–44% depending on soil amendments and 2–29% net ecosystem carbon balance (CO₂); but additional N₂O contribution to GWP was about 0.61–1.18% compared to sole chemical fertilizer treatments. Depending on soil amendments, the AWD reduced EF of CH₄ (22–36%) but increased WP by 25–27% compared to CF system along with 14–43% reduction in GHG intensity (GHGI). Vermicompost treatment had the lowest GHG emission, GWP, EF and GHGI than cowdung, poultry manure under both irrigation methods. Rice yield varied because of soil amendments but not with irrigation methods. Use of vermicompost improved soil organic carbon (SOC) storage significantly than cowdung and poultry manure. In conclusion, AWD practice and amendment of rice soil with vermicompost could be an effective strategy for reducing GHG emission, GWP, EF and GHGI without sacrificing rice yield.

水稻的交替湿润和干燥（AWD）可提高水生产率（WP），最大程度减少甲烷排放量和生态系统净碳平衡（CO ₂），但可能导致一氧化二氮排放量增加。水分管理和不同有机肥施用对甲烷排放，二氧化碳和一氧化二氮通量，排放因子（EF）和可湿性粉剂的综合影响尚未得到充分记录，已在2018年和2019年的旱季进行了评估。AWD和连续洪水（CF）施用在NPKSZn，coddung（CD），家禽粪便（PM）和Vermicompost（VC）处理的地块中。密闭室技术用于确定温室气体的排放。与CF相比，AWD的总GWP降低了15–44％，具体取决于土壤改良剂和2–29％的生态系统净碳平衡（CO ₂）；但是额外的N ₂与单独的化肥处理相比，O对GWP的贡献约为0.61-1.18％。取决于土壤改良剂，与CF系统相比，AWD降低CH _4的EF （22–36％），但WP增加25–27％，同时GHG强度（GHGI）降低14–43％。在两种灌溉方式下，麦处理的温室气体排放量，GWP，EF和GHGI均低于牛粪，家禽粪便。水稻产量因土壤改良而变化，但灌溉方法不同。与cow粪和家禽粪便相比，ver堆的使用显着改善了土壤有机碳（SOC）的存储量。总之，在不牺牲水稻产量的前提下，AWD做法和用ver子改良水稻土可能是减少温室气体排放，GWP，EF和GHGI的有效策略。