介绍了DSSAT3模型的结构与功能，组建了黄土高原地区DSSAT3模型气象、土壤和作物品种参数数据库，包含了28个气象台站逐日气象资料数据、60种主要农耕土壤土种特性数据和7种作物136个品种的遗传特性数据，覆盖了黄土高原不同生态类型区。还特别介绍了CERES-小麦和CERES-玉米模型品种遗传特性参数的确定方法与取值范围，为DSSAT3模型在黄土高原地区应用奠定了基础。%The structure and functions of DSSAT3 model were introduced. Thedatabases of weather, soil and crop growth parameter of DSSAT3 model on the loess plateau were created. The weather database contains daily weather data of 28 weather stations, and soil database contains 60 varieties of soil profile data and the crop genetic parameter database includes 136 cultivars of 7 crops. Three databases cover different ecological districts of the loess plateau. The calculation method and values of cultivar genetic parameters of CERES-wheat and CERES-maize model were introduced especially. This has laied the foundation to applied DSSAT3 model on the loess plateau region.
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