不同肥料用量组合对烤烟产值的效应

Effect of Different Amount Combinations of Fertilizers on Output Valueof Flue-cure Tobacco

选择氮、钾、饼肥作为决策变量,研究其对烤烟产值的影响。采用三因素五水平二次回归通用旋转组合设计,获得了3个决策变量(Xi)与目标函数(Ya)相互关系的数学模型。分析其试验因素效应和交互作用,并通过计算机模拟寻优,优选出最佳施肥方案,即纯氮施用量为62 26～75 43kg hm2,纯钾施用量为191 91～222 02kg hm2,饼肥施用量为77 85～115 98kg hm2。

With 3 factors and 5 levels of the secondary regression of orthogonal block design, the effect of policy variables of N, K and cake fertilizers on fluecured tobacco output value was studied. 3 mathematical models between 3 policy variables(Xi) and objective function(Ya) were established. The effect and interaction of tested factors were analyzed, and the optimum fertilizer combination design was selected. That is pure N 6226～7543 kg/hm2, pure K 19191～22202 kg/hm2 and cake fertilizer 7785～11598 kg/hm2