氮肥运筹对土壤—小麦系统氮素行为及氮素利用效率影响的研究进展  

Research Progress on Effect of Nitrogen Management on Nitrogen Transfer and Nitrogen Use Efficiency in Soil-wheat System

作　　者：李向楠[1] 吴洁[1] 

机构地区：[1]南京农业大学农学院,江苏南京210095

出　　处：《安徽农业科学》2009年第12期5424-5425,共2页Journal of Anhui Agricultural Sciences

摘　　要：氮肥大量用于农业生产中,不仅降低了氮素利用效率,而且对生态环境产生了不良影响。根据国内外研究情况,综述了土壤中氮素的形态及其转化途径、施氮对土壤氮素含量及分布的影响、小麦植株对氮素的吸收同化及分配机理、施氮对氮素利用效率的影响。The nitrogen fertilizer was widely used in agriculture, that not only reduced the use efficiency of nitrogen, but also caused bad influence on ecological environment. Based on the research situation in recent years, nitrogen forms and its conversion paths, effects of nitrogen fertilizer on content and distribution of nitrogen in soil, mechanisms of absorption and assimilation and allocation of wheat on nitrogen, effects of nitrogen application on nitrogen use efficiency were sunnnarized.

关 键 词：氮肥运筹 氮素行为 氮素利用效率 

分 类 号：S512.1[农业科学—作物学]