不同水分处理下香梨地土面蒸发规律研究

Study on Pear Land Surface Evaporation Law under Different Irrigation Techniques

通过对库尔勒灌溉实验站香梨地不同水分处理下土面蒸发试验研究,结果表明:各水分处理在整个生育期的平均土面蒸发强度由大到小依次为中水、高水和低水,其累积土面蒸发值分别为:139.8、120.3和101.1mm。不同处理相对土面蒸发强度均随土壤含水量增加而增大,呈二次递增规律,且随着土壤耗水强度的增大而增大,降低而降低,二者之间呈幂函数关系。

The experimental study on pear land surface evaporation under different water treatments is carried out in the Kuerle irrigation experiment station. The results show that the descending order of average soil surface evaporation intensity in the whole growth period of each irrigation treatments is middle water treatment, high water treatment and low water treatment, the cumulative soil surface evaporation value is 139. 8,120. 3 and 101. 1 mm, respectively. The relative soil surface evaporation intensity of different treatment increases with the increase of the soil moisture, which shows the second increment law. It also increases with the increase of soil water consumption intensity, or vice versa, which shows the exponential function relationship.