TAILIEUCHUNG - Báo cáo lâm nghiệp:"Nutrition and growth in newly established plantations of Eucalyptus globulus in northwestern Spain"

Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí lâm nghiệp đề tài:"Nutrition and growth in newly established plantations of Eucalyptus globulus in northwestern Spain" | Ann. For. Sci. 60 2003 509-517 INRA EDP Sciences 2003 DOI forest 2003044 509 Original article Nutrition and growth in newly established plantations of Eucalyptus globulus in northwestern Spain Agustín MERiNOa Ángel Rodríguez LóPEZa Jesus BRANASa Roque RoDRÍGUEZ-SoALLEiROb a Department of Soil Science and Agricultural Chemistry Escuela Politécnica Superior Universidad de Santiago de Compostela 27002 Lugo Spain b Department of Forest Production Escuela Politécnica Superior Universidad de Santiago de Compostela 27002 Lugo Spain Received 15 November 2002 accepted 22 February 2003 Abstract - The growth and nutritional status of newly established Eucalyptus globulus plantations located in NW Spain were studied in relation to soil properties and site preparation techniques. Most of the plantations are growing on chemically poorly fertile soils of intermediate depth. Despite being fertilized at establishment most of the plantations showed low foliar levels of P and Ca and some showed deficiencies of Mg and K. Growth depended mainly on the altitude length of the drought period and on concentrations of Ca in soils. Productivity is reflected by the concentrations of Ca in leaves. Preparation of the soil by windrowing reduced levels of Ca Mg and P in the soil negatively affecting nutrition and growth and causing an increase in tree mortality. The results suggest subsoiling to be the most suitable site preparation technique for shallow soils and also indicate the need for repeated fertilization and the adoption of silviculture management practices that enhance the natural turnover of nutrients. Eucalyptus globulus forest nutrition forest soils silviculture forest growth Résumé - Nutrition et croissance dans les nouvelles plantations d Eucalyptus globulus du nord ouest de l Espagne. La croissance et l état nutritionnel des plantations d Eucalyptus globulus du nord-ouest de l Espagne ont été étudiés en fonction des caractéristiques édaphiques et des techniques de .

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