The artificial neural network provides convenient and fast tools to simulate rice growth and gets ride of the limitation of traditional models . 4 . fuzzy discrimination system of photothermal traits was developed with fuzzy logic theory and matlab 5 . 1 4 、在水稻高产栽培专家系统的基础上，利用模糊逻辑的理论和方法，以matlab5 . 3为编程工具，研制了水稻光温生态特性的模糊鉴别系统，试图提高专家系统的功能。
