decrease of field evaporation potential is positively related to spraying water quantity and the maximum daily temperature, and negatively related to the minimum relative humidity and wind speed.
农田蒸发能力变化与喷水量和日最高温度成正比,与日最低相对湿度和风速成反比。
based on grey relationship analysis, the main factors affecting evaporation potential were averages of air temperature and relative humidity.