Abstract: The corn experiments of different soil moistures and nutrients in the north of Henan Province showed the fast growth period of corn is between shooting period and heading period, and the interaction between corn height or biomass and soil nutrient is complicated. The constitution of corn biomass is a ffected by soil moisture and nutrient. Relation between corn yield or water consumption of corn and water and fertilizer supply is quadratic curve. From the relation, the water consumption under the highest yield and most efficient water use conditions was got.