In order to save surface freshwater resources，two kinds of combined irrigation modes including well water(under ground brackish water)and canal water(surface freshwater)were studied through field experiment，usingcornas an indicator crop.Eight alternative irrigation modes were set up: well-well-well(JJJ)，well -well-canal(JJQ)， well-canal-well(JQJ)，canal -well-well(QJJ)，well -canal-canal(JQQ)，canal -canal-well(QQJ)，canal -well-canal(QJQ)，canal -canal-canal(QQQ)，and blank control were used in the experiment.The effects of the suitablealternative irrigation mode on the growthcharacteristics，yield and water and fertilizer utilization efficiency of maize werestudied.The results showed that increase of irrigation waterfrequency，leaf growth and above ground biomass accumulation in maizewere restrained at differentdegrees，and there was no significant difference between QJQ and QQQ in above ground biomassaccumulation.Irrigation of well waterat jointing stage had the greatest effect on appearance and yield of maize ears，andthe soil salt accumulation degree was higher，followed by filling stage，and it was the minimum at tasseling stage.Theutilization efficiency of water and fertilizer of QJQ was higher than those of other irrigationmodes，and there was no significantdifference withQQQ.To sumup，considering the factors of maize leafgrowth，biomassaccumulation，yield and water andfertilizer utilizationefficiency，QJQ treatment is more suitable for the local alternative irrigationmode，which is beneficial tothe growth of corn crops andyield，and can also save surface freshwaterresources.