【摘要】 对黄河三角洲地区土壤水蒸发量的计算进行了研究。在研究区典型点裸地、棉花地和芦苇地设立了 3个试验点 ,并利用陶管负压计TDR等仪器 ,获取各试验点不同深度土壤的土水势和含水量 ,应用定位通量法计算土壤水蒸发量。结果表明 ,观测期 ( 2 0 0 2年 9月 )棉花地蒸发量为 85 4mm ,裸地为 60 6mm ,芦苇地为 49 0 4mm。对计算结果以及芦苇地计算蒸发量小的原因进行了分析更多还原

【Abstract】 The paper studies on the calculation of evaporation of soil moisture in the delta area of the Yellow River. It sets up 3 pilot areas for exposed land, cotton field and reed field in the typical area of studied region. It obtains soil and water conditions and moisture content of soil at different depth of each pilot area by using TDR pottery pipe negative pressure meter and calculates the evaporation of soil moisture by applying positioning flux method. The result shows that the evaporation of cotton field is 85.4 mm, exposed land 60.6 mm and reed field 49.04 mm in the period of observation (September 2002). The paper analyzes the causes why reed field has the minimum evaporation.更多还原