The study compared different crop types for wheat production and nitrogen use efficiency in the Jianghan Plain in China. They looked at two rotations: summer rice-winter wheat and summer soybean-winter wheat. By optimizing nitrogen management, they found that wheat yield was higher in the dryland wheat system compared to the rice-wheat system. The dryland wheat had more spikes and nitrogen accumulation, leading to higher grain yield. This suggests that with proper nitrogen management, the rice-wheat system can be as productive as the dryland wheat system in the Jianghan Plain.