The extension of irrigated agriculture is essential to fulfilling the mounting demand for food and fibre from a growing population which is anticipated to reach about 10 billion individuals in 2050. Lacking the necessary drainage, this extension can bring about salinization issues in irrigated regions. Continuous irrigation over many years with no adequate drainage services has led to huge agricultural regions becoming unproductive. Salinization problems linked to poor drainage are widespread in agricultural zones over the world. The aforementioned drainage‐related salinization issues in agricultural land have been solved by using various methods and techniques. This paper presents an assessment of some non‐conventional methods and strategies utilized for dealing with salinization and drainage issues of irrigated land. An indication of the drainage and salinization issues of irrigated areas and the significance of the study are given. Reasoning and foundation of the issues are presented. Numerical and analytical solutions of the problems are described. The drainage water management technique for managing nutrient losses from a drainage system is discussed. The analysis revealed that conjunctive water use with an increased groundwater proportion can to some extent manage the salinization and root‐zone submergence problems of irrigated areas. © 2020 John Wiley & Sons, Ltd.

中文翻译：

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农业用地盐渍化和排水问题

灌溉农业的扩展对于满足不断增长的人口对食物和纤维的日益增长的需求至关重要，人口增长预计到2050年将达到100亿左右。缺乏必要的排水设施，这种扩展会在灌溉地区带来盐碱化问题。多年来连续灌溉，没有足够的排水服务，导致广大的农业地区无产。与排水不良有关的盐渍化问题在世界各地的农业地区普遍存在。通过使用各种方法和技术，已经解决了上述农田中与排水有关的盐渍化问题。本文介绍了一些用于处理灌溉土地盐渍化和排水问题的非常规方法和策略。指出了灌溉区的排水和盐碱化问题，并指出了研究的意义。介绍了问题的原因和基础。描述了问题的数值和解析解。讨论了用于管理排水系统中养分流失的排水管理技术。分析表明，增加地下水比例的混合用水可以在一定程度上管理灌溉区的盐碱化和根区淹没问题。分级为4 +©2020 John Wiley＆Sons，Ltd. 讨论了用于管理排水系统中养分流失的排水管理技术。分析表明，增加地下水比例的混合用水可以在一定程度上管理灌溉区的盐碱化和根区淹没问题。分级为4 +©2020 John Wiley＆Sons，Ltd. 讨论了用于管理排水系统中养分流失的排水管理技术。分析表明，增加地下水比例的混合用水可以在一定程度上管理灌溉区的盐碱化和根区淹没问题。分级为4 +©2020 John Wiley＆Sons，Ltd.