结果表明，在生育期内浑蒲灌区参考作物需水量的变化规律表现为先增大后逐渐减小。
The results showed that the reference crop evapotranspiration in Hunpu irrigation district increased first and then decreased gradually.
评述了作物需水量的计算，并着重分析了基于参考作物蒸发蒸腾量计算作物需水量的方法。
This paper reviewed the methods for computing crop water requirements and emphasized the method based on reference crop evapotranspiration.
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