Soil nitrogen balance assessment and its application for sustainable agriculture and environment

Soil nitrogen balance assessment (SNBA) serves as an effective tool for estimating the magnitude of nitrogen loss/gain of the agro-eco systems and to appraise their sustainability.SNBA brings forth awareness of soil fertility problems, besides providing information relating to the resultant release of nitrogen into the environment consequent to agricultural practices.Quantitative information relating to nitrogen escape into the environment through such exercises can be gainfully utilized for identification of causative factors, enhancing fertilizer use efficiency and formulating programmes aimed at plugging N leakages. An overview of nitrogen balance approaches and methodologies is presented. A deeper understanding and insight into the agro-eco systems provided by the SNBA exercises can lay the basis for the formulation of effective agronomic interventions and policies aimed at promoting sustainable agriculture and a benign environment.

作 者： Rabindra Nath Roy Ram Vimal Misra   作者單位： Land and Water Development Division, FAO, Rome 00100, Italy  刊 名： 中國科學(xué)C輯（英文版）  SCI 英文刊名： SCIENCE IN CHINA SERIES C (LIFE SCIENCES)  年，卷(期)： 2005 48(z2)  分類號： P5  關(guān)鍵詞： nitrogen balance   soil fertility   sustainable agriculture   nutrient flows   and macro   meso and micro levels  

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