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The significance of magnesium for crop quality.

机译：镁对作物品质的意义。

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摘要

Background: The quality of agricultural and horticultural products and its modulation by fertilization has increasingly received attention. However, whereas the importance of magnesium (Mg) as an essential plant nutrient is well established, the impact of Mg nutrition on quality parameters has only been rarely addressed. Scope: This review aims at evaluating the available knowledge on the influence of Mg on produce quality. A short discussion on the term quality as used in this review is followed by an overview of the various functions of Mg in plant metabolism in relation to quality aspects. Finally, the available literature on Mg-associated effects on crop quality is critically surveyed. The question whether Mg application beyond yield optimum further improves crop quality is specifically addressed. Conclusion: Increasing Mg supply on Mg-deficient sites tends to increase the quality of agricultural crops, particularly when the formation of quality traits is dependent on Mg-driven photosynthesis and assimilate translocation within the plant. In fruits and vegetables, ratios of Mg to other nutrients like Ca and K were shown to be a more reliable indicator of the quality response than the Mg status alone. Moreover, it is concluded that Mg doses beyond those required for maximum yield rarely induce a further improvement of produce quality.
机译：背景：农产品和园艺产品的质量及其通过施肥调节的问题日益受到关注。然而，尽管镁（Mg）作为植物必需营养素的重要性已得到公认，但镁营养对质量参数的影响却很少得到解决。范围：这篇综述旨在评估关于镁对产品质量影响的现有知识。在本文中对质量一词进行了简短的讨论，随后概述了镁在植物代谢中与质量相关的各种功能。最后，对与镁有关的作物质量影响的现有文献进行了严格的调查。特别讨论了镁的施用是否超出产量的最佳水平，从而进一步改善了作物质量。结论：缺镁地区增加的镁供应量往往会提高农作物的质量，特别是当质量性状的形成依赖于镁驱动的光合作用并吸收植物体内的易位时。在水果和蔬菜中，镁与其他营养素（例如钙和钾）的比例比单独的镁状态显示出更可靠的质量响应指标。此外，得出的结论是，超出最大产量所需剂量的镁剂量极少引起产品质量的进一步提高。

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