Aiming at recent decade drought stress on Spring maize production in Nanzheng, a comparison of the precipitation distribution between 1966-2000 and recent decade are made, and it is put forward that ensure of seeding temperature the start seeding date is ten days ahead can adapt precipitation distribution better and the harm of drought is reduced. The effect of early seeding in low temperature and cultivate free and double covering on reducing soil water evaporation and enlarging soil capacity of absorbing precipitation and increasing the efficiency of precipitation usage are put forward through field soil water measurement.