The study looked at how delaying the application of nitrogen fertilizer can increase the yield of summer maize. By postponing nitrogen application, the researchers found that the grain yield of maize increased by 2.27%-5.33%. Providing maize plants with enough nitrogen during the later growth stage is crucial for achieving high yields. Postponing nitrogen application also improved nitrogen absorption and accumulation in maize, leading to higher protein yield. Overall, delaying nitrogen application can boost the efficiency of nitrogen fertilizer use and increase the yield of super-high-yield summer maize.