玉米发育期动态模拟模型

Simulation Model of Maize Phenology

通过对玉米不同生育阶段与环境因子关系的分析 ,借鉴“水稻钟模型”的构建思路 ,建立了玉米发育期动态模拟模型。利用试验数据资料对模型进行检验 ,结果表明 :对不同生育阶段模拟 ,绝对误差均在 2 d之内 ;对全生育期模拟 ,绝对误差均在 5d之内 ;平均相对误差小于 5%。

Following the idea of “Rice Clock Model”,a model to simulate maize phenology was established in this study.The model focused on the influence of temperature and daylength on the maize development.The data used to determine the model parameters came from field experiments conducted in Nanjing in 1998.Model validation against the data from independent measurements and the field surveys showed that the standard errors,comparing the simulated values with the observed values,were within 2 days for the different development period and within 5 days for entire development period.The results also showed that average relative error was less than 5%.