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Approaches and Methodologies
出版Food & Agriculture Org., 2003-01-01
主題Technology & Engineering / Agriculture / Agronomy / Soil ScienceTechnology & Engineering / Agriculture / Agronomy / Crop ScienceTechnology & Engineering / Agriculture / Agronomy / GeneralTechnology & Engineering / Agriculture / GeneralScience / Life Sciences / Ecology
ISBN92510503849789251050385
URLhttp://books.google.com.hk/books?id=6tCRkhVYTnoC&hl=&source=gbs_api
EBookSAMPLE
註釋Nutrient-balance assessments are valuable tools for delineating the consequences of farming on soil fertility. Various approaches and methods for different situations have been used in the past. This bulletin presents a state-of-the-art review of nutrient balance studies. It brings out the evolution of the approaches and methods, provides for comparisons among them, features the improvements made, and highlights remaining issues. This analysis will be useful in further development of the assessment methodologies as reliable tools for devising time-scale soil fertility management interventions.