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中文摘要：
利用2010-2011年的大型称量式蒸渗仪和小型棵问蒸发器的实测资料，研究了冬小麦田间蒸散和棵闽蒸发变化规律。结果表明，冬小麦总蒸发蒸腾量为360．974mm，抽穗-灌浆期蒸发蒸腾量达到最大为84．706mm，日均蒸发蒸腾量在全生育期内呈双峰变化，2个峰值处于播种-分蘖、抽穗-灌浆期；冬小麦的棵间蒸发量达到了115．808mm，占总蒸发蒸腾量的比例为32．08％，即冬小麦整个生长季中约1／3的水分以蒸发形式散失，日均棵间蒸发在播种一分蘖期最高，棵间蒸发日变化与蒸发蒸腾日变化趋势相似，其峰值均出现在12：00—14：00间，同时棵间蒸发占蒸发蒸腾比例（E／ET）与土壤表层（0～10cm）含水率有较好的线性相关关系，降雨、灌溉后也对棵间蒸发产生较大的影响。
英文摘要：
With the data of the Large weighing lysimeter and Micro-lysimeter between the year 2010 to 2011, this article study the variation of the winter wheat evapotranspiration and evaporation. The results show that the total evapotranspiration of winter wheat in 2010-2011 is 360. 974 mm. The evapotranspiration reached maximum 84. 706 mm in heading-filling stage. Chart of the average daily evapotranspiration of winter wheat in terms of growing periods which exerts the feature with two summits in sowing-tillering and heading-filling stage. The evaporation of winter wheat amounted to 115. 808 mm, which accounted to 32.8% in total evapotranspiration, so about 1/3 of the total winter wheat consumptive use lost in the form of evaporation throughout the growing season. Daily average soil evaporation was the highest at sowing to til of ering stage compared to other time. Diurnal variation of soil evaporation was similar to diurnal variation field evapotranspiration, and the peak occurred at between 12.00 and 14.00.
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