The article established the HDRICE model by modifying the structure of the ORYZA1 model and revising its parametersby field experiments. The HDRICE model consists of the modules of morphological development of rice, daily dry matteraccumulation and partitioning, daily CO2 assimilation of the canopy, leaf area, and tiller development. The model preferablysimulated the dynamic rice development because of the thorough integration of the effects of temperature and light on therates of rice development, photosynthesis, respiration, and other ecophysiological processes. In addition, this model hasattainable grain yield in the test experiment that showed the potential yield of cultivar Xieyou 46 ranged from 11 to 13 tonsha-1. Besides, the model was used to optimize the combinations of the transplanting date, seedling age and density forcultivar Xieyou 46 at Jinhua area, and the population quantitative indices to attain the potential yield such as maximumstems, effective panicles, filled grain number/leaf area, and so on. The result showed that the combination of transplantingdate on July 25, seedling age of 35 days and base seedling density of 1.33 × 106 ha-1 is the optimum combination for thesecond hybrid rice production in Jinhua County, China. And the maximum stems, the effective panicles, the filled grain perpanicle, the peak of optimum LAI, LAI in later filling stage, and the filled grain number/leaf were 6.03 × 106 ha, 3.99 × 106 ha,119.2, 8.59, 5-6, and 0.64, respectively. The article established the HDRICE model by modifying the structure of the ORYZA1 model and revising its parameters by field experiments. The HDRICE model consists of the modules of morphological development of rice, daily dry matteraccumulation and partitioning, daily CO2 assimilation of the canopy, leaf area, and tiller development. The model preferably simulates the dynamic rice development because of the thorough integration of the effects of temperature and light on therates of rice development, photosynthesis, respiration, and other ecophysiological processes. In addition, this model hasattainable grain yield in the test experiment that showed the potential yield of cultivar Xieyou 46 ranged from 11 to 13 tonsha-1. Besides, the model was used to optimize the combinations of the transplanting date, seedling age and density for cultivar Xieyou 46 at Jinhua area, and the population quantitative indices to attain the potential yield such as maximumstems, effective panicles, filled grain number / leaf area, and so on. The result showed that the combination of transplanting date on July 25, seedling age of 35 days and base seedling density of 1.33 × 106 ha-1 is the optimum combination for thesecond hybrid rice production in Jinhua County, China. And the maximum stems, the effective panicles, the filled grain perpanicle, the peak of optimum LAI, LAI in later filling stage, and the filled grain number / leaf were 6.03 × 106 ha, 3.99 × 106 ha, 119.2, 8.59, 5-6, and 0.64, respectively.