Soil Organic Nitrogen and Its Contribution to Crop Production

被引：74

作者：

Li Sheng-xiu ^{[1
]}

Wang Zhao-hui ^{[1
]}

Miao Yan-fang ^{[2
]}

Li Shi-qing ^{[3
]}

机构：

[1] Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Peoples R China

[2] Henan Univ Sci & Technol, Sch Agr, Luoyang 471003, Peoples R China

[3] Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Peoples R China

来源：

JOURNAL OF INTEGRATIVE AGRICULTURE | 2014年 / 13卷 / 10期

基金：

中国国家自然科学基金;

关键词：

organic nitrogen in soil; chemical components; soil N supplying capacity; mineralization; contribution; MATTER FRACTIONS; AMINO-ACIDS; HUMIC-ACID; FORMS; MINERALIZATION; COMPONENTS; NITRATE; CARBON;

D O I：

10.1016/S2095-3119(14)60847-9

中图分类号：

S [农业科学];

学科分类号：

09 ;

摘要：

Plant growth and crop production depend to a large extent on soil N supplying capacity (SNSC): The higher the SNSC, the higher the dependence of crops on soil and the lower the N fertilizer recovery. Of the SNSC, soil organic N (ON) played a key role in supplying N nutrient to crop production and still does in many subsistence and low-input farming systems. In this paper, soil ON contents, types, chemical components and its contribution to plant production are reviewed up to date in details, the characteristics of ON in dryland soils discussed together with its chemical components, and the mineralization and availability to plants of some important chemical components are emphasized at the last part for practical considerations.

引用

页码：2061 / 2080

页数：20

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