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本文阐述了养分和水分对作物产量及其增产潜力的交互影响。肥和水既是作物产量的决定因素,又是人为的可控因素。作物需要的营养离子从土壤向根表面的移动,受土壤水分含量的影响,特别是在旱地。肥是土水系统的物质基础,水是肥效发挥的关键,二者互为制约,又互相促进。肥水激励机制要求二者有一个适宜的匹配,这样,养分和水分才能发挥其最大经济效益。
This article describes the interactive effects of nutrients and moisture on crop yield and its potential yield. Fertilizer and water are both determinants of crop yield and artificially controllable. The nutrients that crops need to move from soil to root surfaces are affected by soil moisture content, especially in drylands. Fertilizer is the material basis of soil-water system. Water is the key to fertilizer efficiency. The two are mutually restrictive and promote each other. Fertilizer-water incentive mechanism requires a suitable match between the two, so that nutrients and moisture can play its greatest economic benefits.