This study used the location of the average advance time (method 1) and the mean infiltration opportunity time (method 2) as the midpoint of the two-point method for determining “power advance” and Kostiakov–Lewis infiltration parameters. Experiments were carried out in three border-irrigated fields. The results showed that calibration of the power advance equation obtained by the Elliot and Walker method had high accuracy, with an average relative error of 11.3% in the time to complete the advance phase. The root mean square deviation (d_RMS) index used by Elliot and Walker showed that method 1, with an average d_RMS value of 15.7 min, has the lowest d_RMS, which estimates the advance time with mean d_RMS values of 5.1 and 1.8 min less than the proposed method 2 and the method of Elliot and Walker, respectively. Furthermore, using all methods, the Kostiakov–Lewis infiltration equation parameters were determined. In estimating infiltration depth, method 1 had the highest accuracy with a minimum relative error of 0%, a maximum relative error of 8.7%, and an average relative error of 3.8%. Based on both the d_RMS index and the accuracy of the infiltration equation, method 1 had a higher accuracy.

中文翻译：

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研究用于预测地表灌溉推进和入渗的两点法的中​​点*

本研究使用平均提前时间（方法 1）和平均渗透机会时间（方法 2）的位置作为确定“功率提前”和 Kostiakov-Lewis 渗透参数的两点法的中​​点。在三个边灌区进行了试验。结果表明，Elliot和Walker方法得到的功率超前方程的标定精度较高，在完成超前阶段的时间内平均相对误差为11.3%。Elliot 和 Walker 使用的均方根偏差 ( d _RMS ) 指数表明，方法 1 的平均d _RMS值为 15.7 分钟，具有最低的d _{RMS ，它用平均}d估计提前时间_RMS值分别比建议的方法 2 和 Elliot 和 Walker 的方法小 5.1 和 1.8 分钟。此外，使用所有方法，确定了 Kostiakov-Lewis 渗透方程参数。在估算入渗深度时，方法 1 的准确度最高，最小相对误差为 0%，最大相对误差为 8.7%，平均相对误差为 3.8%。基于d _RMS指数和入渗方程的精度，方法1具有更高的精度。