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该文针对井灌区井水灌溉水温低的特点 ,生产实际中需设晒水池来提高水温 ,以便防止井灌水稻冷水害的发生。通过太阳辐射——水体——土壤系统 ,对静水状态和动水状态下晒水池升温机理进行了探讨 ,建立了静水情况下晒水池平衡水温的数学模型 ,并说明各参数的数值算法 ;利用平衡水温的数学模型 ,通过解非奇次方程的方法 ,建立了晒水池内任意时刻各点水温的预测模型 ,并利用建三江垦区七星农场的晒水池实测水温加以验证 ,最大相对误差在 9.6 %以内 ,结果表明预测精度符合生产实际要求 ,这一数学模型为井灌区井水升温提供了较为科学的依据。
In this paper, according to the characteristics of low well water irrigation in well irrigation area, the production of water basins to increase the water temperature in order to prevent the occurrence of cold water damage in well irrigation. Through the solar radiation - water body - soil system, the mechanism of the sunning pool temperature rising under the condition of still water and moving water was discussed. The mathematical model of the equilibrium water temperature of the sunning pool under the condition of still water was established, and the numerical algorithm of each parameter was explained. By using the method of solving non-odd-degree equations, a prediction model of water temperature at various points in the sunning pool was established and verified by the measured water temperature in the sunning pool at Qixing Farm in Jian Sanjiang. The maximum relative error was less than 9.6% The results show that the prediction accuracy accords with the actual production requirements. This mathematical model provides a scientific basis for well water temperature warping in well irrigation areas.