利用311-A最优回归设计研究密度和氮钾肥配施对生姜产量的影响

Effect of Planting Density and Combined Application of Nitrogen,with Potassium on Ginger Yield Optimized by 311-A Regression Design

以"大田金姜"为试验材料,通过311-A最优回归设计研究不同种植密度及氮、钾肥配施对生姜产量的影响。结果表明,种植密度及氮、钾肥配施对产量都有极显著影响,取值过高都会降低产量。通过计算机模拟寻优表明,在当地种植密度以4.39万~4.8万株·hm-2,施纯N 151.4~209.5kg·hm-2,施K2O 88.2~117.1kg·hm-2易获得高产。

The effect of planting density and combined application of Nitrogen with Potassium were studied on the yield of “Datian jinjiang”ginger by 311-A regression design . The results showed that planting density and combined application of Nitrogen with Potassium affected the ginger yield significantly ,and any over dosage in application would reduce ginger yield .With the optimization by computer ,the results suggested that the high yield would be obtained by density in 4.39 Million^4.8 Million plants per hectare and fertilizing N in 151.4~209.5 kg · hm -2 combined with K2 O in 88.2~117.1 kg · hm-2 .