Abstract
The present paper reports the results of several experimental studies on the evapotranspiration of rice for the Spring and October crops carried out during a five-year period (1972–1976) in the Red River Delta of Viet Nam. It was found that the evapotranspiration of rice depends highly upon the growth stages, the amount of fertilizer applied and climatological conditions. However, a linear relationship between rice evapotranspiration and each of the factors : pan evaporation, sunshine duration and atmospheric temperature was significant only for the Spring crop.
