Roy Rabindra Nath, Misra Ram Vimal
Land and Water Development Division, FAO, 00100, Rome, Italy.
Sci China C Life Sci. 2005 Sep;48 Suppl 2:843-55. doi: 10.1007/BF03187123.
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.
土壤氮平衡评估（SNBA）是估算农业生态系统氮素损失/增益规模并评估其可持续性的有效工具。SNBA除了提供与农业实践导致的氮素向环境释放相关的信息外，还能提高人们对土壤肥力问题的认识。通过此类活动获得的有关氮素向环境逸出的定量信息可有效用于识别成因、提高肥料使用效率以及制定旨在堵塞氮素泄漏的方案。本文概述了氮平衡方法和手段。SNBA活动所提供的对农业生态系统的更深入理解和洞察可为制定旨在促进可持续农业和良性环境的有效农艺干预措施及政策奠定基础。
