Calculation method of field water use efficiency of rice based on the theory of deficit irrigation

被引：0
|
作者：
Jia H. [1 ]
Lu C. [1 ]
机构：
[1] Zhejiang Institute of Hydraulics and Estuary
来源：
Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering | 2010年 / 26卷 / 06期
关键词：
Crop-water production function; Crops; Deficit irrigation; Evapotranspiration; Field water use efficiency; Irrigation; Validity evapotranspiration;
D O I：
10.3969/j.issn.1002-6819.2010.06.007
中图分类号：
学科分类号：
摘要：
The valid irrigation water amount, calculated by traditional method of field water use efficiency (FWUE) based on the theory of sufficient irrigation, can not reflect the water transfer and utilization in field as it includes invalid water. In this paper, the validity of evapotranspiration was analyzed according to the crop-water production function, and a new calculation method of FWUE was built based on the theory of deficit irrigation. Calculated by the new method, the FWUE of rice was 0.768 in flooding-irrigation mode, and 0.915 in Wet Irrigation mode. The result indicate a more accurate picture of water transfer and utilization in field.
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页码：38 / 41
页数：3
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