The use of treated wastewater (TWW) as an alternative resource to fresh water (FW) for irrigation purposes is becoming increasingly important, especially in semiarid and arid regions. However, achieving success in crop production largely depends on the adoption of appropriate on‐farm management strategies aimed at optimizing crop yields, maintaining soil productivity and safeguarding the environment. For this purpose, predictive models are of particular interest. A safe irrigation management (SIM) model developed and tested in this research was used to schedule irrigation under controlled management tailored to the use of 1) TWW and 2) FW and to reproduce farmers' strategies. These management strategies aim to improve actual irrigation practices, accounting for water quality, soil characteristics, and crop yield. The results of the application of SIM on a citrus farm in Souss‐Massa, Morocco, show that the management strategy adopted by farmers withdraws considerable amounts of water and results in substantial drainage volumes compared to those in the SIM strategy. In the specific case of TWW, the strategy simulated by the SIM model resulted in a decrease in yield of approximately 4%, compared to the 23% decrease derived from the farmers' traditional strategy. Moreover, SIM allowed for great savings in terms of fertilizing elements and for the reduction in the movement of water and salts beyond the root zone, usually considered the main source of groundwater contamination. These results confirm the appropriateness of using prediction models and the accuracy of the SIM model in adapting irrigation strategies to TWW, which will be an integral part of the strategies that encourage their use in irrigated agriculture. Integr Environ Assess Manag 2020;16:910–919. © 2020 SETAC

中文翻译：

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半干旱地区污水处理后灌溉管理预测模型的开发和应用。

为了灌溉目的，使用处理后的废水（TWW）作为淡水（FW）的替代资源变得越来越重要，特别是在半干旱和干旱地区。但是，要想在农作物生产中取得成功，很大程度上取决于采取适当的农场管理策略，以优化农作物产量，保持土壤生产力和保护环境。为此，预测模型尤为重要。在本研究中开发和测试的安全灌溉管理（SIM）模型用于根据1）TWW和2）FW量身定制的受控管理下的灌溉计划，并重现农民的策略。这些管理策略旨在改善实际灌溉方式，并考虑水质，土壤特性和农作物产量。SIM在摩洛哥Souss-Massa的柑桔农场上的应用结果表明，与SIM战略相比，农民采用的管理策略抽取了大量水，并导致大量排水。在TWW的特定情况下，由SIM模型模拟的策略导致产量降低了约4％，而农民的传统策略则使产量降低了23％。此外，SIM可以极大地节省施肥元素，并减少水和盐分超出根部区域（通常被认为是地下水污染的主要来源）的运动。这些结果证实了使用预测模型的正确性以及SIM模型在使灌溉策略适应TWW方面的准确性，Integr环境评估管理2020； 16：910-919。©2020 SETAC