Consistent with LAI and LAD, shoot dry weight at jointing stageand heading time and crop growth rate (CGR) before jointing wereincreased with the increase of N rates in all the irrigation regimes,and they were the largest in the CF and the smallest in the AWSDregimes when N rate was the same (Table 3). Shoot dry weightat maturity showed no significant difference between NN and HNin either CF or AWMD regimes, but it was significantly increasedwith the increase of N rates in the AWSD regime. The CGR fromheading to maturity was smaller at HN than at NN in the CF regime,and showed no significant difference between NN and HN in theAWMD regime, and was increased with the increase of N rates inthe AWSD regime. At the same N rate, the AWMD regime had thelargest CGR from heading to maturity among the three irrigationregimes (Table 3), indicating that a moderate wetting drying regimebenefits dry mater production during the grain filling period of rice.