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农田蒸散量是灌溉排水设计的重要参数。由于它是十分复杂的物理过程和生理综合过程，关联许多学科，所以研究农田蒸散规律对现代农业学科中很多实际问题的解决具有重要意义。
Farmland evapotranspiration is an important parameter in irrigation drainage design. Because it is a very complicated process of physical processes and physiology, it is related to many disciplines. Therefore, it is of great significance to study the law of farmland evapotranspiration to solve many practical problems in modern agriculture.