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为了探明夏谷生产中氮、磷、钾肥效应和最优施肥参数,本试验采用“3414”肥料效应田间试验,对夏谷高产新品种济谷16的氮、磷、钾肥料效应进行了研究。结果表明:施用氮、磷、钾肥增产效果显著,最高可达32.8%。氮、磷、钾肥间存在明显的交互作用,平衡施肥能显著提高谷子的产量和肥效,氮、磷、钾肥对产量的影响为氮>钾>磷。氮、磷、钾肥的偏生产力随着用量的提高均呈逐渐降低的趋势,平均偏生产力钾>磷>氮。通过建立肥料与产量的三元二次施肥模型得出谷子氮、磷、钾最佳施用量为N 68.53 kg/hm2、P2O5160.62 kg/hm2、K2O 8.96 kg/hm2。因此,济谷16生产中应重视磷肥,适配氮、钾肥。
In order to find out the effects of nitrogen, phosphorus and potash fertilizers and the optimal fertilization parameters in summer cereal production, we used the field experiment of “3414” fertilizer effect to study the effects of nitrogen, phosphorus and potassium fertilizers on the high-yielding summer grain variety Jigu 16 Study. The results showed that the application of N, P and K fertilizers increased significantly, up to 32.8%. Nitrogen, phosphorus and potassium fertilizers had obvious interaction. Balanced fertilization could significantly increase the yield and fertilizer efficiency of millet. Nitrogen, phosphorus and potassium fertilizers affected the yield of nitrogen> potassium> phosphorus. The biosorption productivity of nitrogen, phosphorus and potassium fertilizers tended to decrease gradually with the increase of the amount of nitrogen, phosphorus and potassium. The average partial yield of potassium> phosphorus> nitrogen. Through the establishment of fertilizers and yield of the ternary secondary fertilization model obtained millet nitrogen, phosphorus and potassium optimum application rate of N 68.53 kg / hm2, P2O5160.62 kg / hm2, K2O 8.96 kg / hm2. Therefore, Jigu 16 should pay attention to the production of phosphate fertilizer, nitrogen and potassium fertilizer.