Field experiment of fertilizer effect was conducted in Jiaohe city,Jilin province.According to quadratic equation of three variables,the highest yield of 10 551.5 kg/hm² will be reached when N-P₂O₅-K₂O was 212.24-57.0-78.3（kg/hm²）.The optimal fertilizer applied was 168.4-55.4-63.2 and yield was 10 432.7 kg/hm².According to quadratic equation of one variable,the most fertilization N-P₂O₅-K₂O was 212.1-67.0-64.0 kg/hm² and the most economical fertilization N-P₂O₅-K₂O was 184.1-63.0-60.3.