| 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 |
| 夏玉米田蒸发蒸腾量与棵间蒸发的试验研究 |
| Experimental study on evapotranspiration and soil evaporation in summer maize field |
| 投稿时间：2003-07-30 |
| DOI： |
| 中文关键词: 大型称重式蒸渗仪 小型蒸发器 蒸发蒸腾量 棵间蒸发量 |
| 英文关键词: large weighing lysimeter micro-lysimeter evapotranspiration evaporation summer maize field |
| 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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| 中文摘要: |
| 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。 |
| 英文摘要: |
| 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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