Effects of nitrogen fertilization combined with subsurface irrigation on alfalfa yield, water and nitrogen use efficiency, quality, and economic benefits.

ABSTRACT: Proper water and fertilizer management strategies are essential for alfalfa cultivation in arid areas. However, at present, the optimal amounts of subsurface irrigation and nitrogen (N) supply for alfalfa (Medicago sativa L.) cultivation are still unclear. Therefore, a field experiment was conducted in 2022 in Yinchuan, Ningxia, China, to explore the effects of different subsurface irrigation levels (W₁, 50% of ET_C (crop evapotranspiration); W₂, 75% of ET_C; W₃, 100% of ET_C) and N application rates (N₀, 0 kg/ha; N₁, 75 kg/ha; N₂, 150 kg/ha; N₃, 225 kg/ha; N₄, 300 kg/ha) on alfalfa yield, crop water productivity (CWP), N use efficiency (NUE), quality, and economic b

SUBMITTER: Ma H 

PROVIDER: S-EPMC10859442 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature