Water is a common resource shared by many agents or farmers in irrigation districts, where water management is, therefore, a very complex problem if the target is the equitable distribution of resources or the efficient use of water. This paper aims to present the design and implementation of an Irrigation Agent-Based Model (IABM) for the distribution of water in an irrigation district. In the IABM proposed, each field or farm can be considered as a micro-level and a region or irrigation district as a macro-level. The most approximated irrigation scheduling at each micro-level allows determining the water needs at the macro-level, as a reference for the negotiation of water distribution. A Geographical Information System (GIS) was used to manage georeferenced field information. Field capacity and permanent wilting point values, initial soil moisture, crop types, crop coefficients, root depth, sowing dates and weather data were incorporated into the IABM model for determining irrigation prescriptions. When water available in the irrigation district is insufficient to supply water requirements of all the irrigation fields, the IABM allows water distribution among them according to the cultivated field sizes, irrigation priorities, phenological states and the behavior of neighbors. When water resources are distributable, the proposed negotiation algorithm ensures that fields will use irrigation prescriptions defined with technical and agronomic criteria, thus avoiding the waste of water resource. The IABM developed meets the satisfaction requirement of the greatest number of agents by avoiding as much as possible that the soil water stress increases, using 25% of permissible level of moisture depletion respect to the total available water in each field.

水是灌溉区许多代理人或农民共享的公共资源，因此，如果目标是公平分配资源或有效利用水，那么水管理是一个非常复杂的问题。本文旨在介绍基于灌溉代理的模型 (IABM) 的设计和实现，用于灌溉区的水分配。在提议的 IABM 中，可以将每个田地或农场视为微观层面，将区域或灌区视为宏观层面。每个微观层面最近似的灌溉调度可以确定宏观层面的用水需求，作为协商配水的参考。地理信息系统 (GIS) 用于管理地理参考字段信息。田间容量和永久萎蔫点值，初始土壤水分、作物类型、作物系数、根深、播种日期和天气数据被纳入 IABM 模型以确定灌溉处方。当灌区的可用水不足以满足所有灌区的用水需求时，IABM 允许根据耕地大小、灌溉优先级、物候状态和邻居的行为在它们之间分配水。当水资源可分配时，所提出的协商算法确保田地将使用由技术和农艺标准定义的灌溉处方，从而避免水资源浪费。开发的IABM通过尽可能避免土壤水分胁迫的增加来满足最大数量的代理的满意要求，