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1、用作物系数法 此方法的基本模式,一般采用下式: AET=K_0·RET式中AET——实际蒸散量; K_0——作物系数; RET——标准蒸散量。 为了求算RET,本文用改良彭曼法(Do-cren bos and Pruitt 1977)和日射法(Ma-kkink 1957)。 (1)改良彭曼法
1, using crop coefficient method The basic mode of this method, the general use of the following formula: AET = K_0 · RET where AET - the actual evapotranspiration; K_0 - crop coefficient; RET - standard evapotranspiration. In order to find the RET, we use the Do-cren bos and Pruitt 1977 and the Ma-kkink 1957. (1) Improved Penman method