Discussion on the Effect of Barley"3414"Fertilizer

In the article, 3141 experiment design is used to make regression analysis for the effect of N,P and K Fertilizer on barley by Fertilizer Effect Function Method, the results showed that mathematical model of effect function of yield and fertilizer rate was y=256.16+22.46x1+8.1x2+5.97x3+0.25x1x2+0.57x1x3+0.15x2x3- 2.01x12- 0.5x22- 0.5x32,the peak output was 432.4 kg/667m2, the optimal combination of PK N was 7.5 kg/667m2, 6.7 kg/667m2and 6.3 kg/667m2, the yield of optimal fertilizer rate was 409.8 kg/667m2. The indigenous nutrient supply capacity of rice soil indicated that the supply amount of nitrogen, phosphorus and potassium were 7.92 kg/667m2, 2.93 kg/667m2and 7.53 kg/667m2respectively, the utilization efficiency of nitrogen fertilizer, phosphorus and potassium fertilizer were 47.54%, 6.45% and 17.60% respectively.