Surface irrigation methods enable a lower cost of investment and energy requirements than pressurized systems if they are designed and managed properly. The aim of this investigation was to devise a new simulation model that would enable the determination of the optimum water application time and furrow length in a blocked end furrow system. The infiltration properties of the soil, net irrigation water requirement of the crop and inflow to the furrow constitute the main variables of this process. Deep percolation and the cross-sectional area of the wetting pattern where the net irrigation water requirement of the crop is met along the furrow are the main components that were simulated interactively in the model. They were described as a function of time. The proposed model devised in this investigation was run for two different sample applications. While values of 93 and 94% water application efficiencies were obtained by running the USDA SCS method for the first and second sample applications, respectively, values of 92 and 94% were obtained, respectively, from the proposed model. These results indicate that the proposed model can be used in the design of a blocked end furrow system.

中文翻译：

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抛物线模拟模型在封堵端沟灌法中最小化深层渗透

如果设计和管理得当，地表灌溉方法比加压系统的投资成本和能源需求更低。本次调查的目的是设计一种新的模拟模型，该模型能够确定封闭的末端犁沟系统中的最佳施水时间和犁沟长度。土壤的渗透特性、作物的净灌溉需水量和流入犁沟的水构成了这个过程的主要变量。深度渗透和润湿模式的横截面积（满足作物净灌溉需水量）是模型中交互模拟的主要组成部分。它们被描述为时间的函数。在本次调查中设计的建议模型针对两个不同的示例应用程序运行。虽然通过对第一个和第二个样本应用运行 USDA SCS 方法分别获得 93% 和 94% 的水应用效率值，但从建议的模型中分别获得 92% 和 94% 的值。这些结果表明，所提出的模型可用于封闭端沟系统的设计。