作者: A.B Heinemann , G Hoogenboom , R.T de Faria
DOI: 10.1016/S0378-3774(01)00137-8
关键词: DSSAT 、 Hydrology 、 Environmental science 、 Irrigation 、 Crop simulation model 、 Irrigation management 、 Water resources 、 Water use 、 Irrigation statistics 、 Surface runoff
摘要: Abstract Due to the competitive use of available water resources, it has become important define appropriate strategies for planning and management irrigated farmland. To achieve effective planning, accurate information is needed crop requirements, irrigation withdrawals, runoff nitrate leaching as a function crop, soil type weather conditions at regional level. Interfacing models with geographic system (GIS) extends capabilities The objective this study was determine annual most crops Tibagi river basin in State Parana, Brazil. computer tool selected Decision Support System Agrotechnology Transfer (DSSAT) version 3.5 (98.0) its associated modeling spatial application AEGIS/WIN. It assumed that farms within same county similar practices. representative estimates data from stations located each or nearest station were used. A weighting factor based on proportion acreage applied total basin. model predicted outputs, including yield, leached different types county, analyzed, using analysis methods. This allowed display thematic maps leaching, relate planning. maximum withdrawal, 22,969 m 3 per year, 31,152 m year 1488 t N showed simulation linked GIS can be an help requirements basins large watersheds.