The study looked at how nitrogen and potassium fertilizers affect the growth and yield of hybrid rice. They found that increasing the rates of these fertilizers led to more tillers, larger leaves, and higher grain yield. The application rates of nitrogen and potassium had a specific relationship with the growth rate and yield of the rice. Hybrid rice responded more to nitrogen fertilizer, so higher nitrogen application rates were recommended for the best grain yield. However, potassium application was important for a balanced economic return. For every 100 kg of grain in high-yield cultivation, the optimal application rates were 1.8 kg of nitrogen and 1.6 kg of potassium.