The study looked at how different types of winter wheat and nitrogen fertilizer affected nitrogen absorption and wheat yield. They found that the type of wheat had a big impact on nitrogen levels in different parts of the plant and on yield. Nitrogen fertilizer didn't change nitrogen levels much, but it did increase the number of plants, spikes, and kernels, leading to higher yields. Overall, nitrogen fertilizer helped with plant growth and yield, but didn't change the nitrogen content in the grains.