Cultivating japonica hybrid rice using specific techniques like super high yielding cultivation can significantly increase yields and improve population quality. This study compared different cultivation patterns and found that SHY and SHYHE methods resulted in 41.6% and 29.1% higher yields compared to the control group. These methods also increased productive tillers, leaf area, grain-leaf ratio, photosynthetic rate, and root-shoot ratio, leading to better overall rice quality. By optimizing cultivation techniques, farmers can improve rice population quality and achieve higher yields.