The mechanism irrigati dels combined with fertilizer utilization strategies under the biodegradable fil mul ng cold greatly promote crop photosynthesis, vascular bundles struresource ation and maize production are unclear in semi-arid areas. Unfortuly, mechaniprovides a scientific basis for improving irrigation and fertilizer utilizaion. A fi study wa rried out during 2021-2022 years. Seven treatments were established: two nit e l vels: low-N (150 kg N ha- 1) and high-N (300 kg N ha- 1) combined with three ffe t irrig models: drip irrigation (DI), ridge irrigation (RI) and border irrigation (BI) u the biodegradable film mulching with (CK) treatment have no irrigation, fertilizer and mul g Our results revealed that DIH treatment considerably increased soil water storage, enhanchotosynthesis rate (Pn) of maize by mainly to facilitate stomatal opening compared to the rest of all treatments. In addition, it also enhances the differentiation of the vascular bundle system and maintains its post silk function under better environmental conditions, greatly mproving nitrogen storage in soil and plants, and enhancing maize productivity. DIH and RIH treatments significantly increased net photosynthesis rate (Pn), stomatal conductance (Gs), transpiration rate (Tr), maximum quantum yield of PSII photochemistry (Fv/Fm), and effective quantum yield of PSII photochemistry (Phi PSII), photochemical quenching (qP), nonphotochemical quenching (NPQ), and yield were observed, but evapotranspiration (ET) decreased at different growth stages. The results showed that DIH treatment was an effective tillage strategy, which increased biomass yield by 32.6 %, grain yield by 46.0 %, water use efficiency (WUE) by 46.2 %, and nitrogen use efficiency (NUE) by 86.4 % compared to other treatments. Given these results, thus we recommend the drip irrigation combined with a high-N level under a biodegradable film mulching increase photo-fluorescence efficiency, maize production and resource utilization efficiency in semi-arid regions.