Modeling evapotranspiration of applied water in Egypt Delta
Agriculture in Egypt is receiving the biggest share of developed water supply,amounting to nearly 85%of the available water resources.The policy of Egypt is to increase the food production through expansion of the irrigated areas.As about 97%of Egypts water comes from outside Egypt,there is a need for serious action programs to increase water use efficiency.This research was conducted during years 2007-2009 at Sharkia(east Delta)and Kafr El-Shiekh(north Delta),which are typical of the Nile Delta region.The overall objectives were to help water policy planners to develop appropriate methodologies to determine crop coefficients and evapotranspiration rates for irrigated agriculture.The emphasis was on the introduction of SIMETAW model as a new tool for better water management.The SIMETAW model was calibrated using recent 10-year weather data sets at two sites in the Nile Delta.Its potential was then examined as a tool to evaluate the crop coefficients for wheat and maize.After calibration,it showed high accuracy in long-term simulation of daily weather parameters.It was efficient in projecting the Kc values for field crops cultivated under different irrigation strategies.It estimated ETo with acceptable accuracy from daily weather data using the daily standardized reference evapotranspiration equation and provided water balance estimates that assist in the evaluation of irrigation strategy for improved irrigation efficiency.
Atef Swelam Richard Snyder Morteza Orang
International Center for Agricultural Research in the Dray Areas(ICARDA),Cairo,Egypt Land,Air and Water Resources Dept.,University of California,Davis,USA Department of Water Resources,Sacramento,California,USA
国际会议
The 11th International Conference on Development of Drylands(第十一届国际干旱区大会)
北京
英文
297-316
2013-03-18（万方平台首次上网日期，不代表论文的发表时间）