Effects of mild alternate wetting and drying irrigation and mid-season drainage on CH and NO emissions in rice cultivation.

Rice, one of the major sources of CH and NO emissions, is also the largest consumer of water resources. Mild alternate wetting and drying (AWD) irrigation is widely adopted to save irrigation water resources and maintain rice production, but its effects on CH and NO emissions are unclear. In addition, previous studies have revealed different effects of mid-season drainage on global warming potential (GWP), owing to the different criteria used.