Comparison of Different Methods for Calculating Evapotranspiration of Crops in the Yellow River Delta
YIN Chunyan
CHEN Xiaobing
LIU Hu
SHAN Jingjing
BU Fanmin
WANG De
SUN Haishuang
Abstract：Accurately calculating crop evapotranspiration (ET0) is important in designing water-saving irrigation schedule. This paper compared five methods: the P-M method ,FAO-79Penman ,Priestley-Taylor, FAO-24Pen-man and Hargreaves-Samani, for calculating evapotranspiration of crops in the Yellow River delta using data mea-sured at four weather stations in the region. We took the P-M method as the control to to evaluate the other meth-ods. The results showed that the FAO-Penman was more accurate than Priestley-Taylor in all climatic regions, with errors between 3%and 10%. If there are no sufficient data in humid regions, however, the Priestley-Taylor works better giving more reliable ET0 estimates.
Keywords：reference evapotranspirationP-M methodthe Yellow River deltaPriestley-Taylor method
Publication Date：2017-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：7( 36-41,108 )