Film hole irrigation is a new technique in agricultural production, which can improve water conservation and increase soil temperature. The purpose of this study was to disclose the effects of fertilizer solution concentration (c) on soil water and nitrogen transport characteristics under muddy water film hole infiltration. The laboratory experiments were conducted with muddy water film hole infiltration, using five fertilizer solution concentration treatments (c = 0, 300, 600, 900, and 1200 mg L⁻¹). The cumulative infiltration, migration distance of the wetting front, soil moisture content, and \( \mathrm{N}{\mathrm{O}}_3^{-}-\mathrm{N} \) and \( {\mathrm{NH}}_4^{+}-\mathrm{N} \) contents in the wetted body were observed. The models about (i) the relationship between the cumulative infiltration volume per unit film hole area (I(t)) and infiltration duration (t) and (ii) the relationship among the horizontal and vertical migration distances of the wetting front (F_x, F_z), c, and t were established. The results showed that fertilizer solution concentration (c) had a significant effect on I(t), F_x, F_z, and moisture distribution in the wetted body. Cumulative infiltration volume per unit film hole area and infiltration duration conformed to the Kostiakov infiltration model (R² > 0.98, P < 0.05). \( \mathrm{N}{\mathrm{O}}_3^{-}-\mathrm{N} \) is mainly distributed in the range of the wetting radius 12 cm, while \( {\mathrm{NH}}_4^{+}-\mathrm{N} \) is mainly distributed in the range of the wetting radius 6 cm. This study could provide a theoretical basis and technical support for fertilizer solution infiltration under muddy water film hole irrigation.

膜孔灌溉是农业生产中的一项新技术，可以提高节水效果，提高土壤温度。这项研究的目的是揭示在浑水膜孔渗入条件下肥料溶液浓度（c）对土壤水和氮运移特性的影响。使用五种肥料溶液浓缩处理（c  = 0、300、600、900和1200 mg L ^-1）对浑浊的水膜孔渗入进行实验室实验。累积入渗量，湿润锋面的迁移距离，土壤含水量以及\（\ mathrm {N} {\ mathrm {O}} _ 3 ^ {-}-\ mathrm {N} \）和\（{\ mathrm { NH}} _ 4 ^ {+}-\ mathrm {N} \）观察湿润体内的内含物。关于（i）单位膜孔面积的累积渗透量（I（t））和渗透持续时间（t）之间的关系以及（ii）湿润前沿的水平和垂直迁移距离之间的关系（F _x，F _z），c和t被建立。结果表明，肥料溶液浓度（C ^）对一个显著影响我（吨），˚F _X，˚F _ž以及湿润体内的水分分布。单位膜孔面积的累积入渗量和入渗持续时间符合Kostiakov入渗模型（R ²  > 0.98，P  <0.05）。\（\ mathrm {N} {\ mathrm {O}} _ 3 ^ {-}-\ mathrm {N} \）主要分布在润湿半径12 cm的范围内，而\（{\ mathrm {NH}} _4 ^ {+}-\ mathrm {N} \）主要分布在润湿半径6 cm的范围内。该研究可以为泥水膜孔灌下肥料溶液入渗提供理论依据和技术支持。