Influenced by crops' physiological mechanism and the unsteady, non-linear stochastic variation of meteorological factors, reference evapotranspiration is characterized by its stochasticism.
受作物本身生理机制以及近地层气象因子非线性、非平稳化随机变化的影响，参考作物腾发量在时间尺度上具有自相似性特点。
In most parts of the area, the reference evapotranspiration of chimonophilous and thermophilic crops during their temperature-defined growth season decreased, and the aridity index increased.
全区大部分区域喜凉作物和喜温作物温度生长期内参考作物蒸散量呈下降趋势，干燥度呈增加趋势。
This paper reviewed the methods for computing crop water requirements and emphasized the method based on reference crop evapotranspiration.
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。
The results showed that the reference crop evapotranspiration in Hunpu irrigation district increased first and then decreased gradually.
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 modified P-M equation is suggested to calculate the reference crop evapotranspiration in solar-heated greenhouse.
建议在日光温室里使用修正后的P - M公式计算参考作物的蒸发蒸腾量。
Due to the spatiotemporal heterogeneity of meteorology, landform and physiognomy, different reference crop evapotranspiration methods have different applicability.
受地区间气象、地形和地貌时空异质性的影响，不同参考作物腾发量计算公式适用性各不相同。
Due to the spatiotemporal heterogeneity of meteorology, landform and physiognomy, different reference crop evapotranspiration methods have different applicability.
受地区间气象、地形和地貌时空异质性的影响，不同参考作物腾发量计算公式适用性各不相同。
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