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Position: Home > Articles > Research on the Relationship between the Hourly and Daily Crop Coefficient Journal of Irrigation and Drainage 2013,32 (3) 63-66

作物系数小时尺度和日尺度关系研究

作  者:
黄壵;王景雷;刘浩;陈智芳;宋妮;陶国通
单  位:
中国农业科学院农田灌溉研究所
关键词:
作物系数;时间尺度;参考作物蒸散
摘  要:
利用Penman-Monteith公式估算参考作物蒸散,研究了日尺度参考作物蒸散(ET0d)和日内小时尺度参考作物蒸散之和(ET0dh)的关系。结果表明,ET0d和ET0dh以及实际日尺度和日内小时尺度作物系数均显著线性相关;基于Penman-Monteith公式的日尺度和小时尺度参考作物蒸散估算方法可用于作物系数的作物蒸散时间尺度转换。
译  名:
Research on the Relationship between the Hourly and Daily Crop Coefficient
作  者:
HUANG Yao1,3,WANG Jing-lei 1,2,LIU Hao1,2,CHEN Zhi-fang1,2,SONG Ni 1,2,TAO Guo-tong1,3(1.Farmland Irrigation Research Institute,Chinese Academy of Agricultural Sciences,Xinxiang 453002,China;2.Key Laboratory for Crop Water Requirement and Regulation,Ministry of Agriculture,Xinxiang 453002,China;3.Graduate School of Chinese Academy of Agricultural Sciences,Beijing 100081,China)
关键词:
crop coefficient;temporal scale;reference evapotranspiration
摘  要:
Using the method of estimating reference evapotranspiration by Penman-Monteith formula,the relationship between the daily reference evapotranspiration(ET0d) and the sum of 24 hourly reference evapotranspirations within a day(ET0dh)was researched.The results showed that there existed significant linear relationships between ET0d and ET0 dhas well as kcdand kch.The method of estimating reference evapotranspiration by Penman-Monteith formula could be used for the change of evapotranspiration time scales for crop coefficient.

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