The study looked at how planting density and nitrogen fertilization affect the quality and yield of winter wheat. They tested different densities and nitrogen levels in a field experiment. Results showed that increasing planting density led to more wheat culms, but higher densities didn't always mean more growth. Nitrogen levels affected grain weight and yield, with the best results seen with moderate nitrogen levels under low planting density. Overall, it's suggested to adjust nitrogen levels based on planting density to maximize wheat production efficiently.