Iran has an arid to semi-arid climate where water resources are limited. Irrigation planning plays an essential role in the growth and development of crops. This study aims to enhance the current status of irrigation scheduling and improve farm water management on sugarcane farms in Khuzestan province, Iran. The AquaCrop model and the surface energy balance algorithm for land (SEBAL) were used to simulate sugarcane growth and performed well in estimating actual evapotranspiration and final yield based on the calibration and validation results. Four irrigation scenarios were considered: scenario 1, irrigation according to the current situation; scenario 2, irrigation based on maximum allowable depletion (40%–55%); scenario 3, irrigation based on field capacity; and scenario 4, deficit irrigation (causes 5% reduction in yield). Water efficiency based on water consumption (WP_IR), transpiration rate (WP_Tr), and evapotranspiration rate (WP_ET) were estimated to compare the scenarios in terms of water consumption. Scenario 3 was the selected scenario in which WP_IR, WP_Tr, and WP_ET were increased about 108.3%, 2.1%, and 1.0%, respectively. Finally, the scenarios were evaluated economically, and the results showed that improving irrigation management slightly increased the benefit.

中文翻译：

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使用 AquaCrop 模型和遥感评价甘蔗灌溉

伊朗气候干旱至半干旱，水资源有限。灌溉计划在作物的生长发育中起着至关重要的作用。本研究旨在加强伊朗胡齐斯坦省甘蔗农场的灌溉调度现状并改善农场用水管理。AquaCrop 模型和陆地表面能平衡算法 (SEBAL) 用于模拟甘蔗生长，并根据校准和验证结果在估计实际蒸散量和最终产量方面表现良好。考虑了四种灌溉方案：方案 1，根据现状灌溉；情景 2，基于最大允许消耗量的灌溉（40%–55%）；情景 3，基于田间容量的灌溉；情景 4，亏缺灌溉（导致产量减少 5%）。_估计IR )、蒸腾速率 (WP _Tr ) 和蒸散速率 (WP _ET ) 以比较用水量方面的情景。情景 3 是选定的情景，其中 WP _IR、WP _Tr和 WP _ET分别增加了约 108.3%、2.1% 和 1.0%。最后，对这些情景进行了经济评估，结果表明改善灌溉管理略微增加了收益。