For big-ears variety, key was increasing the number of kernels per ear and 1000-kernels weight to achieve super high yield. The optimum yield structure was 467.6 ears/m2, 49.73 kernels/ear, 49. 38g/1000-kemels.

• 大穗型品种实现超高产的关键是：主攻穗粒数和千粒重，其最佳产量结构模式为：穗数约467.；6万穗/hm~2，穗粒数约49