波涌灌溉的水流推进规律研究

Study on the Law of Water Flow Course in Surge Flow Irrigation

根据大田波涌灌与连续灌的试验实测资料,分析讨论了二者在灌水方向上的水流推进的时间分布特征,结论为第一周期的水流推进过程和连续灌基本相同,且波涌灌在各周期的平均水流推进速度均大于连续灌,认为最佳灌溉方式是合适的停水时间和合适的灌水总时间相结合,还对水流推进过程进行了分段拟合,相关系数均令人满意。

Based on the experimental data of surge and continue irrigation in the field, the distribution characteristics of the time in flow direction for both methods were analyzed, it was made a conclusion that the first period are almost the same between the two methods, further more the average flow velocity in each period of surge flow is greater than the continuous irrigation. The best irrigation method is the proper intermission time combined with the proper time of irrigation, numerical stimulations are also made for each period of surge flow, as the result, the regressions coefficient above are all satisfied.