Abstract:A model simulation of the growth period,dry matter distribution and yield of rice was conducted based on the data from multiple field experiments and meteorological data in Hubei Province to promote the development of the “Shifting from indica rice to japonica rice” planting model in Hubei Province,increase the utilization efficiency of light and temperature resources in the rice farming model,and improve the quality of rice. Results showed that the simulation error of the growth period of indica and japonica rice in Hubei Province was within 2 days of physiological development. The simulation of growth period and panicle dry matter distribution was basically distributed near the 1∶1 line,and the fitting effect was good. The relative root mean square error (RRMSE) of the practical rice yield and the simulated yield was 11.4%,indicating that the simulation process is credible. At the same time,the simulation method of this model was used to preliminarily predict the suitable sowing date of japonica rice in Hubei Province. It will provide references for selecting the planting distribution and sowing date of indica and japonica rice in Hubei Province.