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采用“3414”试验设计方案,研究氮、磷、钾不同施肥配比对甘蔗产量的影响,评价试验土壤有效养分状况,并建立肥料效应方程计算氮、磷、钾最佳施肥量及最高产量施肥量。结果表明:在所有的处理中,N34.5kg/667 m~2、P_2O_58kg/667 m~2、K_2O18 kg/667 m~2的处理产量最高,为5353kg/667 m~2;N素对甘蔗产量的影响最大,K_2O次之,P_2O_5最小。根据肥料效应方程,在现有土壤条件下,N、P_2O_5、K_2O最佳施肥量分别为27.50kg/667 m~2、1.66 kg/667 m~2、8.53 kg/667 m~2,甘蔗产量为5054.82kg/667 m~2。
The experimental design of “3414” was used to study the effect of different fertilizers on the yield of sugarcane, evaluate the available nutrient status of the soil and establish the fertilizer effect equation to calculate the optimum fertilizers of nitrogen, phosphorus and potassium Yield Fertilizer amount. The results showed that the yield of N34.5kg / 667m ~ 2, P_2O58kg / 667m ~ 2 and K_2O18kg / 667m ~ 2 was the highest, which was 5353kg / 667m ~ 2. The greatest impact, followed by K_2O, P_2O_5 minimum. According to the fertilizer effect equation, under the existing soil conditions, the optimum fertilization rates of N, P_2O_5 and K_2O were 27.50kg / 667m ~ 2, 1.66kg / 667m ~ 2 and 8.53kg / 667m ~ 2, 5054.82 kg / 667 m ~ 2.