Meanwhile, the methods for lower aborting seeds both in fertilization and in embryo formation stages should be accepted to increase seeds of a spike efficiently.

• 对于穗粒数低于30粒的品种，要增加受精前的小花数，同时要针对不同的品种，采取措施减少受精败育数或成胚后籽粒的退化数才能有效地提高穗粒数。