应用负压计测定土壤蒸发量

USING NEGATIVE PRESSUREMETER TO MEASURE THE EVAPORATION CAPA CITY OF SOIL WATER

在半水成的滨海盐化潮土区测定土壤蒸发量的试验结果表明:根据土壤水负压力和土壤非饱和水流上行的达西公式,应用负压计测定土壤蒸发量的方法,优于国内常用的波波夫法.前者能够准确、快速、简便地测定自然状态下的土壤蒸发量,并可直接用于生产.

The evaporation capacity of soil water was measured on semihydrogenic seashore saline soil. The results showed that according to the negative pressure of soil water and the Dasey formula of unsaturated water in soil going up, using negative pressuremeter to measure the evaporation capacity of soil water is better than the often used Boberv method. The former can be precisely, quickly and simply used to measure the evaporation capacoty of soil water in natural environment, and directly used in production.