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Distribution of Soil Nutrients and Productivity of Tropical Farmland: A Case Study of Ledong Li Autonomous County, China
The distribution of soil nutrients and soil productivity of farmland in Ledong Li Autonomous County (Ledong County) are studied. By forming an indicator system for assessing farmland productivity, which includes three sub-goals of site conditions, soil physicochemical properties and soil profile configuration, and applying Analytic Hierarchy Process to determine the weight sum, the farmland productivities are estimated. The results indicate that soil nutrients and farmland productivity are in moderate level but unevenly distributed in each Town of Ledong County. The distribution of farmland productivity is closely related with topography and river distribution, where irrigations and slopes are main determining factors of uneven distributions of soil nutrients and farmland productivity in study area. Soil acidification of surface layers in tropical areas was significant in last 30 years. Ways to fertilize should be altered in order to prevent soil acidifications and improve its farmland productivity.
Distribution of Soil Nutrients and Productivity of Tropical Farmland: A Case Study of Ledong Li Autonomous County, China
The distribution of soil nutrients and soil productivity of farmland in Ledong Li Autonomous County (Ledong County) are studied. By forming an indicator system for assessing farmland productivity, which includes three sub-goals of site conditions, soil physicochemical properties and soil profile configuration, and applying Analytic Hierarchy Process to determine the weight sum, the farmland productivities are estimated. The results indicate that soil nutrients and farmland productivity are in moderate level but unevenly distributed in each Town of Ledong County. The distribution of farmland productivity is closely related with topography and river distribution, where irrigations and slopes are main determining factors of uneven distributions of soil nutrients and farmland productivity in study area. Soil acidification of surface layers in tropical areas was significant in last 30 years. Ways to fertilize should be altered in order to prevent soil acidifications and improve its farmland productivity.
Distribution of Soil Nutrients and Productivity of Tropical Farmland: A Case Study of Ledong Li Autonomous County, China
Wang, Deng-feng (author) / Wei, Zhi-Yuan (author) / Lv, Lie-Wu (author) / Qi, Zhi-Ping (author)
2012
5 Seiten
Conference paper
English
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