Abstract The cash crop industry has been developed extensively around the world, but in some cases high yields are obtained at the expense of large water and fertilizer input. Although the yield is higher under these practices, it may not be a high-efficient approach from the perspective of crop quality, economical revenue and sustainability in a long term. To solve this problem, an integrated high-efficient irrigation strategy for water-saving and quality-improving of cash crops (WSQI) has to be proposed. Here, we review the research frontiers in this field and the findings of our research group, aiming to expound WSQI with the following perspectives (1) Deficit irrigation under certain conditions and reasonable fertilization can significantly improve the quality of cash crops. Based on the screening of water/nutrient-sensitive quality traits, comprehensive evaluation methods combining the determination of weight for single quality attributes can be used to evaluate and compare comprehensive fruit quality index. (2) Statistical models of water-yield-quality for cash crops were developed that consider the compromise between crop yield and quality. The exploration of biophysical models revealed the mechanisms underlying crop quality formation. (3) Linear, non-linear, dynamic and multi-objective programming models can be powerful tools for supporting irrigation decision-making while considering crop water-yield-quality relationships, market supply and demand, consumer preferences, crop price and resource availability. The integrated high-efficient irrigation strategy proposed in this review would motivate the transition of irrigation strategies from the conventional field irrigation theory, to a new chapter of irrigation management for water conservation and quality improvement in cash crops. The first one is based on water balance and water-yield models, while the second one is based on the information of crop water demand and comprehensive consideration of the water-yield-quality relationship. In addition, this review will provide a theoretical basis and decision-making guidance for research innovation and agricultural production.

中文翻译：

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经济作物节水提质综合灌溉策略：理论与实践

摘要 经济作物产业在世界范围内得到广泛发展，但在某些情况下，高产是以牺牲大量的水肥投入为代价的。虽然在这些做法下产量更高，但从作物质量、经济收入和长期可持续性的角度来看，这可能不是一种高效的方法。为解决这一问题，必须提出经济作物节水提质综合高效灌溉策略（WSQI）。在此，我们回顾了该领域的研究前沿和课题组的研究成果，旨在从以下几个角度阐述WSQI： (1) 一定条件下的亏缺灌溉和合理施肥可以显着提高经济作物的品质。基于对水/养分敏感品质性状的筛选，综合评价方法可结合确定单一品质属性的权重，对水果综合品质指标进行评价和比较。(2) 建立了兼顾作物产量和品质的经济作物产水水质统计模型。生物物理模型的探索揭示了作物品质形成的潜在机制。(3) 线性、非线性、动态和多目标规划模型可以成为支持灌溉决策的有力工具，同时考虑作物水分产量与质量关系、市场供需、消费者偏好、作物价格和资源可用性。本综述提出的综合高效灌溉策略将推动灌溉策略从传统的田间灌溉理论转变为经济作物节水和质量改善的灌溉管理新篇章。第一个是基于水分平衡和产水量模型，第二个是基于作物需水量信息，综合考虑产水量关系。此外，本综述将为研究创新和农业生产提供理论依据和决策指导。而第二种是基于作物需水信息，综合考虑产水水质关系。此外，本综述将为研究创新和农业生产提供理论依据和决策指导。而第二种是基于作物需水信息，综合考虑产水水质关系。此外，本综述将为研究创新和农业生产提供理论依据和决策指导。