Abstract: Application of ＂3414＂ design theory in Daxing farm of Wengniute of Chifeng City to set corn farm effieiency test,to investigate the effect of different fertilizer treatments on corn yield.The results showed that： The yield of treatment 6 was the highest reaching 1145kg,when no fertilizer deal with a minimum yield of 547 kg,the difference was significant; were compared with different dosage of nitrogen, phosphorus and potassium found that while the other two fertilizers keep unchanged only increased a single use of another fertilizer, maize yields increased with the fertilizer at first and then decreased when continued to improve the amount of the fertilizer; Contrast the treatment of founded that the treatment without nitrogen has notable effect on corn yield; much lower than that applied P and K treatment, indicating nitrogen fertilizer on corn yield is greater than P and K;Contrast with no potassium and no phosphorus treatment, The deficiency of corn yield was not significant, which indicated corn yields similar to the dependence of the phosphorus and potassium.