不同密度与肥料配比对马铃薯全粉加工品种大西洋产量的影响

Effect of Different Density and Fertilizer Ratio on Yield of Whole Powder Processing Potato Variety Atlantic

在哈尔滨市阿城农场的自然和土壤条件下,通过田间试验,建立了马铃薯品种大西洋的产量与密度及氮磷钾施肥量的4因子5水平2次正交旋转组合效应数学模型。结果表明,对产量的作用大小依次为钾肥>磷肥>氮肥>密度,不同施肥、密度都有最佳值,施肥过量或不足、密度过大或过小都会影响马铃薯产量。各因素间对产量影响皆存在一定的交互作用。通过在以产量最大化为目标函数下寻优得到最佳的因素组合水平:密度72 675~77 325株/hm^2、纯N 113.70~140.25 kg/hm^2、P_2O_585.95~104.55 kg/hm^2、K_2O 158.4~177.9 kg/hm^2。

Under the natural and soil conditions of A Cheng farm in Harbin,a four factor and five level orthogonal rotation combination mathematical model was established to measure the density, N ,P and K fertilizer application rate effect of yield of potato variety ＂the Atlantic＂ in the field experiment.The results showed that the influence of yield is K〉P〉N〉density.There is an optimum value for different fertilization and density, excessive or insufficient fertilization and too large or too small density will affect the yield of potato.There is a certain interaction among the factors.The best combination of factors ：density 72 675-77 325 strains/hm^2,N 113.70~140.25 kg/hm^2,P205 85.95-104.55 kg/hm^2,K20 158.4-177.9 kg/hm^2.