The drought during the early filling stage accelerated wheat filling velocity and increased wheat grain weight, while the drought during the late filling stage restrained the wheat filling process.

• 灌浆前期干旱有促进灌浆和增加粒重的作用，而后期干旱对小麦灌浆有抑制作用，全程干旱使小麦的灌浆速率明显减弱。