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、P2O5 12.23 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.
Corn“3414”fertilizer responseEffect function of fertilizerRecommendation fertilization amount