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采用“3414”肥料效应田间试验方案,对谷子氮、磷、钾肥效应进行研究,同时对谷子产量进行肥效模型拟合,得出氮、磷、钾肥的最优推荐施肥量。结果表明:氮、磷、钾肥配合施用可以显著增加谷子的穗长、穗粗、单穗重、穗粒重和产量。氮、磷、钾肥对谷子经济性状的影响为氮>磷>钾。通过三元二次肥效模拟方程可以得出,豫谷23的最佳施肥量分别为N 165.33kg/hm~2、P_2O_5 115.93kg/hm~2、K_2O 32.48kg/hm~2。通过一元二次肥效模拟方程可以得出,豫谷23的最佳施肥量分别为N 162.66kg/hm~2、P_2O_5 109.30kg/hm~2、K_2O 32.68kg/hm~2。因此,豫谷23施肥时,应以氮、磷肥为主,兼施钾肥。
The effects of nitrogen, phosphorus and potash fertilizers on millet were studied by field experiment with “3414” fertilizer effect. At the same time, the yield of millet was fitted with the model of fertilizer efficiency, and the optimal recommended fertilization amount of nitrogen, phosphorus and potassium fertilizer was obtained. The results showed that the combination of N, P and K could significantly increase the ear length, ear diameter, single ear weight, grain weight and yield of millet. The effects of nitrogen, phosphorus and potassium on the economic traits of millet were nitrogen> phosphorus> potassium. The results showed that the optimum fertilization rates of Ng 23 were N 165.33kg / hm ~ 2, P_2O_5 115.93kg / hm ~ 2 and K_2O 32.48kg / hm ~ 2, respectively. The results showed that the optimum fertilization rates of Yugu 23 were N 162.66kg / hm ~ 2, P_2O_5 109.30kg / hm ~ 2 and K_2O 32.68kg / hm ~ 2, respectively. Therefore, Yugu 23 fertilizer, should be nitrogen, phosphate-based, and fertilizer.