【摘要】 应用ＳＰＡＣ系统水分循环原理，建立了适合玉米生育的水分利用子模式；利用该模式模拟分析了辽宁省海城市、昌图县、阜新蒙古族自治县３ 地区的土壤水分动态变化过程、农田蒸发和蒸腾过程，并结合作物生物学特性建立了水分胁迫对作物生理过程的影响函数。经计算，该模式模拟结果（ 除个别期次外） 的相对误差范围海城为０．１３％ ～３４．９％ ，昌图为０ ．４４％ ～３２ ．５ ％ ，阜新为２．６％ ～２６．１％ 。更多还原

【Abstract】 Applied the water cycle principle in soil-plant-atmosphere system,the submodel of the maize water utility was founded.The soil water variation and evapotranspiration of the field was simulated in Haicheng city、Changtu county、Fuxin county in Liaoning province and the water effect function with crop biology feature was established.After calculated,the relative error range of the water submodel,except several simulation values,was 0.13%～34.9% in Haicheng、0.44%～32.5% in Changtu、2.6%～26.1% in Fuxin.更多还原