| Research on integrated evapotranspiration of maize in Heilonggang plain |
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| DOI：10.7606/j.issn.1000-7601.2011.05.23 |
| Key Words: maize soil moisture content evapotranspiration Heilonggang |
| Author Name | Affiliation | | LI Wei | China Research Institute of Water Resource and Hydropower, Beijing 100038, China | | CHEN Genfa | China Research Institute of Water Resource and Hydropower, Beijing 100038, China | | LIU Jiahong | China Research Institute of Water Resource and Hydropower, Beijing 100038, China | | LU Lu | China Research Institute of Water Resource and Hydropower, Beijing 100038, China | | QIN Dayong | China Research Institute of Water Resource and Hydropower, Beijing 100038, China |
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| Abstract: |
| For making the flux of dualistic water cycle affected by human activities clearly, soil moisture content of surface and profile were measured separately by FDR and the neutron probe in Heilonggang area of Hebei Plain during the growth period of maize. The growth characteristics of maize an
d the correlation analysis between precipitation and soil moisture content were analyzed. Based on this, the evapotranspiration (ET) was calculated and analyzed in the stages of maize seedling, jointing, tasselling, grouting and so on. The results show that the total evapotranspiration is 383.0 mm during the maize growth period and the average ET is 1.2, 3.6, 5.7, 6.5, 2.8, 1.8 mm/d respectively. ET is highly related with the leaf area index (LAI) during various growing periods. The highest LAI is 5.693 and the average ET and precipitation rate is 0.62. This research is part of the study of duality water cycle under intense human activity. |
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