土壤无机氮残留与生态环境安全以及土壤氮素有效性、氮肥减量施用等紧密关联,日益成为生态、环境、土壤和植物营养等学科十分关注的热点之一。氮肥(化肥和有机肥)是耕作土壤无机氮残留的主要来源,并产生重要影响。通过合理施肥等,可以调控土壤中残留无机氮含量。今后,可在最佳经济施氮量的确定和植物性硝化抑制剂等方面作更多的研究。 Soil inorganic nitrogen residues are closely related to ecological and environmental safety and soil nitrogen availability and nitrogen application rate reduction. They are increasingly becoming one of the hot topics in ecology, environment, soil and plant nutrition. Nitrogen fertilizers (fertilizers and organic fertilizers) are the main source of inorganic nitrogen residues in tillage soils and have a significant impact. Through reasonable fertilization, we can control the residual inorganic nitrogen in soil. In the future, more studies will be conducted on the determination of optimal nitrogen application rates and the control of plant nitrification inhibitors.