Hybrid rice types, like super and ordinary hybrids, produce more grain than inbred rice when given low to medium nitrogen levels. In a study in China, super hybrid rice had 3.33-7.41% higher yields than inbred rice with no nitrogen, and 5.94-10.87% higher with moderate nitrogen. Ordinary hybrid rice also outperformed inbred rice by 4.53-6.17% and 4.35-4.69% at low and moderate nitrogen levels. The ordinary hybrid's higher yield was due to more plant growth, while the super hybrid's yield was boosted by better grain production efficiency. The super hybrid also used nitrogen more efficiently for grain production compared to inbred rice. Overall, both hybrid rice types showed better yields than inbred rice under low and moderate nitrogen conditions, but for different reasons.