钾肥施量与方法对玉米产量的影响

Effect of Application Amount and Method of Potassium Fertilizer on Maize Yield

试验以丹东地区主栽玉米品种丹大17为材料,针对钾肥的不同施用量和施用方法,采用二次回归旋转组合设计,研究钾肥施用量与施用方式的不同组合对丹大17玉米产量及产量构成因素的影响,筛选最佳组合方式,结果表明,钾肥基施183-214.2 kg/hm^2,追施32.7-69.0 kg/hm^2,可显著的提高玉米果穗的穗粒数和百粒重,从而提高了玉米的产量。

With Danda- 17 maize which is the commonly- cultivated variety in Dandong as an example, the effect of application amount and method of potassium fertilizer on maize quality was studied by rotation composite design of quadratic regression. The results showed that 183.3 - 214.2 kg/hm^2 potassium sulfate as the base fertilizer and 32.7 - 69.08 kg/hm/ as the additional fertilizer can significantly improve the 100 - seed weight of the maize.