阿拉尔灌区参考作物潜在腾发量的变化特征及相关分析

Characteristics and Dependence Analysis Reference Crop Evapotranspiration in Alaer Irrigated Area in Tarim River Basin

利用Penman-Monteith公式,根据阿克苏水平衡试验站1989～1996年逐日气象资料,计算了逐日参考作物潜在腾发量,分析了其变化特征,建立了其与其它气象要素、20cm蒸发皿蒸发量的相关关系。利用这些相关关系进行参考作物潜在腾发量的估算,方法简单,精度较高。

Based on daily meteorological data from 1989 to 1996 of Aksu Water Balance Experimental Station, CAS in Alaer irrigated area in Tarim river basin, daily reference crop evapotranspirations are calculated by Penman-Monteith equation. Characteristics of reference crop evapotranspiration are analyzed. Meanwhile, empirical relationships between reference crop evapotranspiration and other meteorological factors and that between reference crop evapotranspiration and water surface evaporation of 20 cm experimental pool are established, which can be used in the estimation of reference crop evapotranspiration in a simple way with preferable accuracy in this distract.