【摘要】 根据二次旋转回归试验结果,建立了氮磷钾三要素与亩产量关系的数学模型;得出三者对产量的影响为:磷肥 >氮肥>钾肥,并模拟筛选出不同试验条件下获得高产时氮磷的适宜范围;对各单因子效应也进行了分析。更多还原

【Abstract】 The mathematical model for describing the relations between nitrogen, phosphorus, cotassium fertilizer and grain yield per mu was established by means of the experimental results using the design of the current rotation-regression combination, It was shown that the influence of different kind of fertilizer on grain yield was in order phosphorus fertilizen>nitrogen fertilizer >potassium fertilizer, The optimal ranges of amount applied on nitrogen, phosohorus and potassium fertilizer for high-yielding in different experimental condition were obtnined and the effect of single factor was estimated更多还原