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首页> 外文期刊>International Journal of Agricultural and Biological Engineering >Optimization of equitable irrigation water delivery for a large-scale rice irrigation scheme
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Optimization of equitable irrigation water delivery for a large-scale rice irrigation scheme

机译：大型水稻灌溉计划的合理灌溉水输送优化

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Equitable water allocation is essential in an irrigation scheme for obtaining potential crop yields from the entire scheme, especially when water supply is inadequate. An optimization model achieved this goal by coupling an optimal water allocation model with available water supply and irrigation water demand for a river-fed rice irrigation system in Malaysia. This model consists of a paddy field water balance module and an optimization module. The outputs from the module are daily irrigation demand and surface runoff, if there is any. The optimization module consists of an objective function, which minimizes water shortage across the scheme area while maintaining equity in water allocation. This model performs optimization subject to several system constraints, and the decision variable of the model is daily releases or supply to the tertiary canals. Performance of this model remained unaffected under different water supply conditions, and the optimization model reliably examined the effects of alternate water allocation and management rules with field information. It improves efficiency and equity in water allocation with respect to crop growth stages and water shortages rather than simply cutting irrigation supply on a proportional basis to overcome water shortages.
机译：在灌溉计划中，合理的水分配对于从整个计划中获得潜在的农作物产量至关重要，尤其是在供水不足的情况下。通过将最佳配水模型与马来西亚河灌水稻灌溉系统的可用供水和灌溉需水结合起来，优化模型实现了这一目标。该模型包括一个水田水平衡模块和一个优化模块。该模块的输出是每日灌溉需求和地表径流量（如果有）。优化模块由目标函数组成，该函数可在计划范围内最大程度地减少水资源短缺，同时保持水资源分配的公平性。该模型在受到几个系统约束的情况下执行优化，并且该模型的决策变量是每日排放量或向第三运河的供应量。该模型的性能在不同的供水条件下保持不变，并且该优化模型利用现场信息可靠地检验了替代水分配和管理规则的影响。相对于作物生长阶段和缺水，它提高了水分配的效率和公平性，而不是简单地按比例减少灌溉供应以克服缺水。

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