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通过“3414”回归最优设计原理设置的油菜肥效试验结果,获得肥料效应函数方程,由此数学模型得出理论氮磷钾最佳施肥量,其中N 225 kg/hm2,P2O5135kg/hm2,K2O 75kg/hm2和最佳产量2100kg/hm2。综合分析不同推荐施肥方法的施肥量,结合当地农业生产实际,氮磷钾推荐施用量分别为120kg/hm2、120kg/hm2、75kg/hm2。
According to the results of “3414” regression rape fertilization experiment, the fertilizer effect function equation was obtained. Based on the mathematic model, the optimum NPK fertilization rate was obtained, of which N 225 kg / hm2, P2O5135kg / hm2 and K2O 75kg / hm2 and the best yield 2100kg / hm2. Based on the comprehensive analysis of the fertilization amount of different recommended fertilization methods, the recommended application rates of NPK are 120kg / hm2, 120kg / hm2 and 75kg / hm2, respectively.