Experiment on fertilizer effect of "3414" trial design for carrot

Trial of fertilizer efficiency to carrot was carried out based on 3414 design.The results showed that when the field was abundant in available phosphorus,deficient in available nitrogen and potassium,the application of nitrogenous and potassium fertilizer could significantly promote the yield of carrot.And in this trial field,the amount of fertilizers application to get maximum carrot yield were N 18.75 kg/667 m2(281.25 kg/hm2),P2O5 8.17 kg/667 m2(122.55 kg/hm2),K2O 36.26 kg/667 m2(543.9 kg/hm2) respectively,and the maximum carrot yield was 2673.71 kg/667 m2(40105.65 kg/hm2).