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| Soil Organic Nitrogen and Its Contribution to Crop Production |
| LI Sheng-xiu, WANG Zhao-hui, MIAO Yan-fang , LI Shi-qing |
1、College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, P.R.China
2、School of Agriculture, Henan University of Science and Technology, Luoyang 471003, P.R.China
3、State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling 712100, P.R.China |
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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.
Abstract 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.
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Received: 31 March 2014
Accepted:
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| Fund: This work was supported by the National Natural Science Foundation of China (30971866 and 30230230). |
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Corresponding Authors:
LI Sheng-xiu, E-mail: li-sx@263.net
E-mail: li-sx@263.net
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Cite this article:
LI Sheng-xiu, WANG Zhao-hui, MIAO Yan-fang , LI Shi-qing.
2014.
Soil Organic Nitrogen and Its Contribution to Crop Production. Journal of Integrative Agriculture, 13(10): 2061-2080.
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