Subsurface Drip Irrigation with Emitters Placed at Suitable Depth Can Mitigate N2O Emissions and Enhance Chinese Cabbage Yield under Greenhouse Cultivation

Agricultural practices, such as applying excessive water and nitrogen fertilizer to increase the crop yield, can be a significant source of greenhouse gas emissions (GHGs). Therefore, techniques proper management are needed mitigate these without yield reduction. The experiment used three subsurface drip irrigation (SDI) depths with emitters buried at 0.05, 0.10, 0.15 m below soil surface, along two (Urea, N > 46.2%) application levels 300 kg ha?1 (N300) 240 (N240) investigate effect vertical horizontal distribution on N2O under different SDI in conditions. results indicated that from SDI10 SDI15 decreased by 7.06% 10.69%, respectively, compared SDI5. N2O, WFPS, NH4+-N, NO3?-N were significantly reduced increased radial distance emitter. was positively correlated WFPS NH4+-N while negatively NO3?-N. concentrations depth fertilization events. Furthermore, N300 N240 (p 0.05). findings demonstrated Chinese cabbage enhanced SDI5 SDI10. more than among all treatments.