APPLICATION OF ENERGY AND WATER BALANCE METHODS: A COMPARATIVE STUDY ON WHEAT EVAPOTRANSPIRATION RATES

文献类型: 外文期刊

第一作者: Liu, Xiaofei

作者: Liu, Xiaofei;Fei, Liangjun;Duan, Aiwang;Meng, Zhaojiang;Liu, Zugui;Zhang, Jiyang;Zhang, Yingying;Duan, Aiwang;Meng, Zhaojiang;Liu, Zugui;Zhang, Jiyang;Zhang, Yingying

作者机构:

关键词: Winter wheat;Evapotranspiration;Energy balance;Bowen ratio

期刊名称:BANGLADESH JOURNAL OF BOTANY ( 影响因子:0.308; 五年影响因子:0.348 )

ISSN: 0253-5416

年卷期: 2017 年 46 卷 3 期

页码:

收录情况: SCI

摘要: As a problem of water shortage in Henan Province, it is necessary to study the evapotranspiration of wheat field, in order to make reasonable allocation of agricultural water resources. Water balance method (WB) is used to measure the evapotranspiration of the point, and the energy balance (EB) method and the eddy correlation (ECV) rule is used to estimate the evapotranspiration of large scale. Through the study, the correlation coefficient of the energy balance method and water balance method was 0.99. The instantaneous value of the energy balance method was higher, but the daily average value was close to the normal level. Finally, it is pointed out that in energy balance method is used to calculate evapotranspiration calculated Bowen ration the key is usually used on a weighted average value instead of the instantaneous values of the error can be eliminated. The results show that energy balance method can fasten and continuous monitor crop evapotranspiration, which has reference significance for guiding the local agricultural water resource disposition.

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