The infiltration types of film hole irrigation (FHI) can be divided into film hole free infiltration (FHFI) and film hole interference infiltration (FHII). Numerical simulations were carried out with HYDRUS to investigate the influence of soil texture (ST), film hole diameter (D), film hole spacing (S) and water depth above the film hole (H) on the cumulative infiltration under two infiltration types of FHFI and FHII. The results showed that the amount of FHII was reduced significantly compared to that of FHFI. ST, D and S are the dominant factors affecting the infiltration reduction volume (ΔI). The relationship between ΔI and the time after interference (t − t₀) is a proportional function (R² ≥ 0.96), and its proportional coefficient has a good power function relationship with D and S. The power function coefficients have large differences for different ST, and the range of variation is 0.1–191, whereas there is little difference between the power function index of D and S; the average values were 2.6 and −2.5, respectively. A simplified calculation model of infiltration reduction was established, and the estimation accuracy was high (RMSE = 0.017 L, EF = 0.980). This research can provide a reference for the calculation of the irrigation water volume of the FHI.

中文翻译：

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干扰入渗过程中膜孔灌入减少特性及简化计算模型*

膜孔灌溉（FHI）的入渗类型可分为无膜孔入渗（FHFI）和膜孔干涉入渗（FHII）。采用HYDRUS进行数值模拟，研究土壤质地（ST）、膜孔直径（D）、膜孔间距（S）和膜孔上方水深（H）对两种入渗类型下累积入渗的影响。 FHFI 和 FHII。结果表明，与FHFI相比，FHII的量显着减少。ST、D和S是影响入渗减少量（ΔI）的主要因素。ΔI与干扰后时间的关系（t − t ₀ )是比例函数( R ²  ≥0.96)，其比例系数与D和S具有良好的幂函数关系。不同ST的幂函数系数差异较大，变化范围为0.1~191，而D和S的幂函数指数差异不大；平均值分别为 2.6 和 -2.5。建立了入渗减少的简化计算模型，估计精度高（RMSE = 0.017 L，EF = 0.980）。本研究可为FHI灌溉水量的计算提供参考。