参考作物腾发量研究浅析

Study on Reference Crop Evapotranspiration Hydraulic

研究参考作物腾发量进而确定作物需水量,对于指导农田灌溉和水资源的合理配置具有十分重要的意义。本文主要对前人的研究成果进行分析归纳和总结,以此了解国内外参考作物腾发量的研究动态,对其形成初步认识,并基于现阶段的研究成果和存在的不足,为以后参考作物腾发量的深入研究提供理论参考。文中指出目前国内外关于ET0的研究都是在一定的条件下建立起来的,具有局限性,因此,今后的研究重点是建立各种非均一下垫面条件下具有不同时空分布特征和不同时间尺度的作物需水模型。

The research on reference crop evapotranspiration to determine the crop water requirement is of great significance for guiding farmland irrigation and the rational configuration of water resources. This article mainly analyzes and summarizes the predecessors ＇ research to see the study trends on reference crop evapo- transpiration at home and abroad and thus to gain a basic understanding about it. Furthermore, to provide a theoretical evidence for further study based on the current achievements and deficiencies. At the same time, this paper points out that the existing studies of ET0 in the world are established under certain conditions and they are of great limitation. The research in the future is to focus on creating models of non-uniform underlying surface conditions with different time and space characteristics and setting up crop water requirement patterns of different time scales.