Fe-deficiency is the major cause of reduced crops yield in North,Northeast,and Northwest China.Studies showed that the Fe-deficiency is associated with P element content,the precipitation induced by P-Fe interaction results in effec-tiveness reduction of the two elements.Therefore,the relationship between P-Fe interaction and Fe efficiency was dis-cussed,by combining and summarizing from research status of plant adaptation mechanism under iron deficiency,P-Fe in-teraction,and nutrition using efficiency.Some suggestions were made for the study about nutrients balance rule,hope to pro-vide theoretical basis for scientific fertilization.%缺铁是导致我国华北、东北及西北地区作物减产的重要因素之一。大量研究表明植物体内铁缺乏与磷的含量密切相关，磷和铁互作形成沉淀导致这两种元素的有效性都降低。从植物缺铁适应机制、磷铁互作研究现状以及营养高效利用三个方面进行了整理和总结，探讨铁高效利用与磷铁互作之间的关系，并对养分平衡规律的研究提出了一些建议，旨在为科学施肥提供理论依据。
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