Abstract: This paper introduced the field experimental results of ＂3414＂ fertilizer response to corn in 2013 at chifeng city.The theoretical optimal fertilization amount of N,P and K were N 18.59 kg/667m2、P2O512.23 kg/667m2﹑K2O 6.72 kg/667m2.The optimal yield was 954.66 kg/m2 under the ratio of pure N ∶P2O5∶K2O（1.00 ∶0.66 ∶0.36）.The recommendation fertilization amounts were urea（N,460 g/kg） 40.41 kg/667m2,calcium superphosphate（P2O5,120 g/kg） 101.92 kg/m2 and potassium sulfate（K2O, 500 g/kg） 13.44 kg/667m2.