河套黄灌区油用向日葵氮磷钾肥料效应分析

A Study on the Effect of Application N,P,K of Oil Sunflower in Hetao Irrigated Area of Inner Mongolia

为了明确内蒙古河套黄灌区油用向日葵氮、磷、钾肥料效应,采用三因素二次通用旋转设计法,对油用向日葵在内蒙古河套灌区进行氮、磷、钾施肥试验研究。结果表明,河套灌区施用氮、磷、钾均对油用向日葵产量有显著的增产效果,并能用三元二次多项式进行模拟表达。最高理论产量可达307.2 kg/667 m2。氮、磷、钾的最佳配比为1.38∶1.37∶1。

In order to manifest the effect of application of NPK of sunflower field in Hetao irrigated area of Inner Mongolia. A 3-factor and 2-degree common rotary design was used to analyse and simulate the effect of application of NPK in Hetao irrigated area of Inner Mongolia. The result of study show that application of NPK can increase yield of oil sunflower in Hetao irrigated area, and it can be expressed by a 3-factor and 2-degree mathematical modal. Highest yield was 307.2 kg/667m^2, optimum proportion of NPK was 1.38 ： 1.37 ： 1.