Fertilizer effect trial of table maize Guinuo 518 and analysis of the optimal fertilization amounts

【Objective】The trial was conducted to determine the optimal fertilizer rate of nitrogen, phosphorus and potassic fertizer in order to provide references for constructing high-yield and high-efficient table waxy corn fertilizer model. 【Method】The test design of 3414 was adopted by using N 225.00 kg/ha, P2O590.00 kg/ha,K2O 150.00 kg/ha as the second fertilizer level to investigate growth duration, plant height, ear height, ear length, ear diameter,stalk diameter and yield. The experiment results were statistically analyzed. 【 Result 】 Compared with N0P0K0treatment, increase yield ratio of all the other treatments reached significant level. The yield of the treatment N2P2K2was 10333.50 kg/ha, which was the highest yield. The next was treatment N2P2K2with yield of 10325.00 kg/ha. According to quadratic equation of three variables, quadratic equation of two variables and quadratic equation of one variable,the recommendable fertilizer amount was proposed. The highest yield could be got by N,P2O5and K2O application rate: 204.50, 73.20,and 103.00 kg/ha, respectively. 【Conclusion 】The fertilizer rate for the highest yield was N 231.10 kg/ha,P2O590.00 kg/ha and K2O 88.10 kg/ha, and the fertilizer rate for optimal yield was N 204.50 kg/ha, P2O573.20 kg/ha and K2O 103.00 kg/ha.