Research on characteristic of summer corn evapotranspiration under different soil moisture condition
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DOI：10.7606/j.issn.1000-7601.2008.05.05
Key Words: summer corn  soil moisture  evapotranspiration  stem sap flow
Author NameAffiliation
LIN Tongbao Agronomy College of Henan Agricultural University/Key Laboratory for Regulating Crop Growth and Development of Henan Province, Zhengzhou, He'nan 450002, China 
MENG Zhanying Agronomy College of Henan Agricultural University/Key Laboratory for Regulating Crop Growth and Development of Henan Province, Zhengzhou, He'nan 450002, China 
QU Yiwei Agronomy College of Henan Agricultural University/Key Laboratory for Regulating Crop Growth and Development of Henan Province, Zhengzhou, He'nan 450002, China 
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Abstract:
      Under the rainproof pit simulation measured test condition, Zheng-Dan 958 was taken as the material to study the evapotranspiration characteristic of summer corn under different soil moisture condition. The result indicated that, under different moisture content condition, there is relationship between soil evaporation and soil moisture, the diurnal change of soil drought treatment is lower than suitable treatment, enough moisture treatment is higher than suitable treatment. 75% treatment is the highest transpiration rate diurnal change, and 11.8%、4.3％ higher than soil drought treatment and enough moisture treatment. Sap flow diurnal change with soil moisture contentment, its summit is delayed 2 hours to transpiration.
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