A study looked at how different amounts of nitrogen fertilizer and planting densities affect the yield and quality of a type of early hybrid rice called W-Liangyou 3418. They found that increasing nitrogen fertilizer improved the number of productive panicles and grain quality, while planting density had less impact on these factors. Grain yields varied significantly with different nitrogen rates and planting densities. Overall, higher nitrogen levels led to better milling and appearance quality of the rice, while planting density affected the grain quality of W-Liangyou 3418.