Simulation Effect of Water and Nitrogen Transport under Wide Ridge and Furrow Irrigation in Winter Wheat Using HYDRUS-2D

An experiment was conducted to create a science-based program of irrigation and fertilizer application for two-year winter wheat under wide ridge furrow in the Yellow River area. The study performed test field located Zhengzhou, Henan Province, China. A numerical model soil water nitrogen transport created using HYDRUS-2D. behavior predicted different treatments analyzed identify pathways transformation. balance calculated treatments. coefficients determination measured values content, nitrate nitrogen, ammonium both horizontal vertical directions were all >0.68; mean absolute error <0.06; root square <0.1. These indicate feasibility irrigation. correlation coefficient R2 between simulated uptake total crop content 0.88, RMSE value 10.58 kg/ha, MAE 5.9 kg/ha. Nitrogen loss primarily caused by denitrification, quantity gaseous 7.05–38.2% form. absorbed plant roots each treatment 7.6–15.1% amount absorbed. maximum 155.53 kg/ha with yield 6888.67 at rate 220 irrigating 70% capacity. UE capacity relatively high, PFP 120 80% use efficiency 320 60% lowest overall. This provides basis investigating mechanisms