The amount of evapotranspiration of farm land can be calculated by multiplying the largest possible evaporation capacity of water surface with a special coefficient.
用它计算的水面最大可能蒸发量乘以一定系数，便可换算成农田蒸散量。
2
Soil evaporation can be calculated by using the soil evaporation measured by micro-lysimeter by multiplying a coefficient of 0.96.