| 夏玉米田蒸发蒸腾量与棵间蒸发的试验研究 |
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| 引用本文： | 王健,蔡焕杰,陈凤,陈新民.夏玉米田蒸发蒸腾量与棵间蒸发的试验研究[J].水利学报,2004,35(11):0108-0113. |
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| 作者姓名： | 王健 蔡焕杰 陈凤 陈新民 |
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| 作者单位： | 西北农林科技大学,旱区农业水土工程教育部重点实验室,陕西,杨凌,712100 |
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| 基金项目： | 国家高技术研究发展计划(863计划)(2002AA2Z4031)、高等学校博士学科点专项科研项目(20020712020) |
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| 摘 要： | 本文利用2年的大型称重式蒸渗仪和小型棵间蒸发器的测定资料，研究了不同灌水(2001年灌140mm、2002年灌65mm)条件下夏玉米生长期间的逐日蒸发蒸腾和棵间蒸发过程。结果表明，2年夏玉米生长期间棵间蒸发占总蒸发蒸腾量的比例分别为43.69%和48.12%。分析得出夏玉米出苗前利用小型棵间蒸发器实测蒸发的修正系数为0.96。同时，分析了棵间蒸发占蒸发蒸腾的比例随叶面积指数(LAI)和表层土壤含水量的变化关系。
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| 关 键 词： | 大型称重式蒸渗仪 小型蒸发器 蒸发蒸腾量 棵间蒸发量 |
| 文章编号： | 0559-9350(2004)11-0108-06 |
| 收稿时间： | 2003/7/30 0:00:00 |
| 修稿时间： | 2003年7月30日 |
Experimental study on evapotranspiration and soil evaporation in summer maize field |
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| WANG Jian.Experimental study on evapotranspiration and soil evaporation in summer maize field[J].Journal of Hydraulic Engineering,2004,35(11):0108-0113. |
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| Authors: | WANG Jian |
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| Affiliation: | Northwestern Science and Technology University of Agriculture and Forestry, Yangling 712100, China |
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| Abstract: | The daily changes of evapotranspiration and soil evaporation for summer maize field were analyzed according to the observation data using large weighing lysimeters and micro-lysimeters in the period of growing season in 2001 and 2003.The result shows that the ratio of soil evaporation to evapotranspiration is 43.95% and 48.82% respectively, which is correlated to the irrigation condition. Soil evaporation can be calculated by using the soil evaporation measured by micro-lysimeter by multiplying a coefficient of 0.96.The variation of the ratio of soil evaporation to evapotranspiration following the changes of leaf area index and surface soil moisture is also analyzed. |
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| Keywords: | large weighing lysimeter micro-lysimeter evapotranspiration evaporation summer maize field |
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