灌溉排水学报2013，Vol.32Issue(5)：20-25,6.DOI:10.7631/j.issn.1672-3317.2013.05.005
河南地区不同年代不同季节参考作物蒸发蒸腾量研究
Study on Reference Crop Evapotranspiration in Different Years and Different Seasons in Henan Province
摘要
Abstract
Based on the daily data of 17 meteorological stations from 1981 to 2010 in H enan province,reference crop evapotranspiration was calculated by Penman-Monteith equation,the temporal and spatial variations of reference crop evapotranspiration were analyzed,and the dominant factor influencing reference crop evapotranspiration was explored using multivariate regression method.The results indicated that the annual reference crop evapotranspiration had a decreasing trend,and changed from 912.4 mm to 1151.2mm.The reference crop evapotranspiration increased in winter,while the reference crop evapotranspiration decreased in other seasons.The reference crop evapotranspirations in spring,summer,fall and winter were 31％,38 ％,19 ％ and 11％ of annual reference crop evapotranspirations respectively.There was a decreasing trend in the eastern and southern of Henan while the reference crop evapotranspirations increased first,then decreased in the western and northern of Henan from 1981 to 2010 in the spatial distribution.Distance averages of the reference crop evapotranspiration were 6.6～33 mm,9.4～27 mm,-46～10 mm respectively in the eastern and southern of Henan from 1981 to 1990,1991-2000 and 2001-2010 while they were-63～19 mm,22～55 mm and-14～27 mm respectively in the western and northern of Henan from 1981 to 1990,1991-2000 and 2001-2010.The sunshine duration was the dominant factor influencing reference crop evapotranspiration in different years and different seasons and there was a positive relation between them.The sunshine duration decreased significantly in Henan province from 1981 to 2010.关键词
参考作物蒸发蒸腾量/变化趋势/河南省Key words
reference crop evapotranspiration/ changing trend/ Henan province分类
农业科技引用本文复制引用
南纪琴,肖俊夫,刘战东,陶国通,苏星..河南地区不同年代不同季节参考作物蒸发蒸腾量研究[J].灌溉排水学报,2013,32(5):20-25,6.基金项目
国家现代玉米产业技术体系建设专项资金项目(nycytx-02) （nycytx-02）
国家科技支撑计划项目(2011BAD29B09) （2011BAD29B09）
