对４个水稻品种插秧至抽穗期的出叶动态进行了模拟，结果表明，各品种模拟值与实际观察值吻合较好。根据叶龄与根、蘖、穗等器官的同伸关系，用叶龄模型预测各器官的发育进程，可用以编制水稻生长日历，同时提供相应的促、控措施，使水稻品种的高产潜力得到充分发挥。 The leaf dynamics of four rice varieties during transplanting to heading stage were simulated. The results showed that the simulation values ​​of all the varieties were in good agreement with the actual observations. According to the relationship between leaf age and the same growth of roots, tillers, spikes and other organs, the leaf age model can be used to predict the developmental process of various organs, which can be used to compile the rice growth calendar and provide the corresponding measures of promotion and control so that the high yield potential of rice varieties can be obtained fully use.