Nitrogen fertilizer levels and application timing can impact winter wheat yield. In this study, different nitrogen levels and application ratios were tested. The best results were seen with 225 kg/hm2 of nitrogen and a 60%+40% application ratio. Increasing nitrogen initially boosted the number of ears, grains per ear, thousand-grain weight, and overall yield, but excessive nitrogen led to diminishing returns. 225 kg/hm2 was found to be the most suitable nitrogen application rate for winter wheat. Proper nitrogen management can maximize yield and prevent overuse of fertilizer.