Real-time Forecast of Grape Evapotranspiration under Drip Irrigation in Hilly Region of Southern China
Abstract：Based on long series of meteorological data from Yongkang irrigation experimental station,which represented typical hilly region of southern China,long time of ET0(reference crop evapotranspiration) were calculated by Penman-Monteith equation.According to the variation,ET0 real-time forecast model was established,and how did A0 impact the model's precision was analyzed.Dual crop-coefficient method was applied in determining grape's daily Kc under drip irrigation.Based on daily Kc and forecast of ET0,daily ETc forecast model of grape under drip irrigation was presented.The ETc forecast model was validated by actual evapotranspiration data which calculated by water balance theory with the measured soil moisture.Validated results showed that the ETc forecast model and its parameters were feasible in use.
Keywords：real-time forecastcrop coefficientreference evapotranspirationevapotranspiration
Publication Date：2012-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：6( 47-52 )