Field observations and plot experiments revealed that a well developed plowed layer promoted the rate of desalinization of soils during the rainy season owing to its good permeability. While at the dry season,it facilitated the rate of evaporation of soil moisture and formed a dry mulch of a few em thick. The mulch reduced the rise of ground water from subsoil horizons and consequently kept the soil in a desalinized condition for a longer period. In a well cultivated soil,the annual rate of desalinization attained 30-50% within 1 meter in soil profile.