The principle of measuring turbulent flux by eddy covariance system and its application to fieldevapotranspiration measurement were introduced in this paper.
主要介绍涡度相关技术测定湍流通量的原理，及其在农田蒸散量测定方面的国内外应用研究进展。
2
The amount of evapotranspiration of surface irrigation field was a little larger than that of sprinkler irrigation field.
喷灌农田的作物蒸散量通常小于地面灌农田。
3
The effects of concret mulching on evaporation, transpiration, evapotranspiration, soil salt, yields of cotton and corn, water use efficiency were studied by field experiments.