数字农科院2.0

A Review Of Nitrogen Translocation A.nd Nitrogen-Use Efficiency

文献类型： 外文期刊

作者： Xing, YY; Jiang, WT; He, XL; Fiaz, S; Ahmad, S; Lei, X; Wang, WQ; Wang, YF; Wang, XK

作者机构：

关键词： crop growth; crop yield; nitrogen use efficiency; nitrogen fertilizer

期刊名称： JOURNAL OF PLANT NUTRITION

ISSN： 0190-4167

年卷期： 2019 年 42 卷 19 期

页码：

收录情况： JCR（2021版）

摘要： Nitrogen (N) is a primary nutrient for crop growth. In most agricultural areas, crop production relies heavily on the supply of exogenous N fertilizers. Globally, a large amount of nitrogenous fertilizer is applied to achieve maximum crop productivity. However, N fertilizer application is costly and negatively impacts the environment. One way around these problems is to provide a new N-use efficiency (NUE) framework that promotes the efficient acquisition and use of N and high N translocation rates from vegetative organs to reproductive organs under reduced N inputs. This review integrates the current knowledge about the direct and indirect effects of soil properties, crop varieties, soil water status, soil N fertilizers, and soil microbes on N translocation. In addition, we explore strategies that specifically accomplish N translocation via mycorrhizal fungi. Finally, we discuss recent advances in plant physiology, demonstrating that N translocation is an effective target to improve cereal yields and NUE. Although the relationship between crop variety and N translocation is mostly unknown, understanding this relationship is necessary to select and breed crop varieties that exhibit high yields and N translocation efficiency.

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