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采用SPAC系统模型来模拟和预测大田作物的水热运移规律时 ,系统内各特征参数的确定是比较困难的。根据北京水科所永乐店试验站的气象观测资料 ,对农田SPAC系统中的上边界能量参数的确定作了初步分析 ,结果表明 ,所确定的参数具有一定的适用性。
When adopting the SPAC system model to simulate and forecast the water-heat transport law of field crops, it is difficult to determine the characteristic parameters in the system. According to the meteorological observation data of Yongledian Experimental Station of Beijing Water Science Institute, the determination of the upper boundary energy parameters in farmland SPAC system is preliminarily analyzed. The results show that the determined parameters have certain applicability.