研究结果表明,水稻旱作条件下灌浆速率为单峰曲线,以强势粒灌浆为主;水作条件下灌浆速率为双峰曲线,强势粒和弱势粒灌浆并重,旱作条件下结实率较低是由于缺乏弱势粒的灌浆,所以应取相应的提高弱势粒灌浆速率的栽培措施来提高结实率。 The results showed that the filling rate of rice under single cropping was in single peak curve, with strong grain filling as the main one. Under water as the condition, the filling rate was bimodal curve, and both strong grain and weak grain filling were equal. The seed setting rate was lower under dry cultivation Is due to the lack of weak grain filling, so should take appropriate cultivation measures to increase the grain filling rate of inferior grains to improve the seed setting rate.