With aid of observed climate data, FAO Penman-Monteith equaption is used to calculate the reference ET and crop coefficient.
结合气象观测数据反演作物系数，最后计算月蒸散发量。
The evaporation capacity calculated by Penman-Monteith formula is suggested to replace the water surface evaporation observed for an improved regression.
建议使用彭曼公式计算的蒸发能力代替实测水面蒸发以提高拟合效果。
The value measured by Penman-Monteith method is very close to that measured with whole-tree potometer and that measured by heat pulse technique with errors less than 2%.
微气象法中午蒸腾值十分接近整树容器法与热脉冲法，其误差小于2％。
The results show that among four revised formulae, three have linear relation with Penman-Monteith ETo result except Blaney-Criddle method has exponential relation with Penman-Monteith method.
研究表明，对于本研究地区，四种方法中除布兰尼—克里德尔方法与彭曼—蒙特斯方法具有指数关系外，其它三种方法与彭曼—蒙特斯方法都具有线性关系。
The results show that among four revised formulae, three have linear relation with Penman-Monteith ETo result except Blaney-Criddle method has exponential relation with Penman-Monteith method.
研究表明，对于本研究地区，四种方法中除布兰尼—克里德尔方法与彭曼—蒙特斯方法具有指数关系外，其它三种方法与彭曼—蒙特斯方法都具有线性关系。
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