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随着生产的发展,施肥水平的提高,土壤养分结构发生了改变。为了探索在新的生产水平下,土壤、作物和肥料的关系,我们对武功地区不同肥力土壤,用最优回归设计进行氮、磷、钾3因子5水平的肥料试验。这种方法能够充分运用试验数据,全面地分析各种肥料在不同用量时对产量的影响。既反映各元素的单独作用,也反映各元素的交互作用,结果比较
With the development of production and the improvement of fertilization level, the structure of soil nutrients has changed. In order to explore the relationship between soil, crop and fertilizer at the new production level, we tested the fertilizers of N, P and K levels of 3 factors and 5 levels on the fertile soil in Wugong region with the optimal regression design. This method can make full use of the experimental data to comprehensively analyze the effect of various fertilizers on the yield when different dosage is used. Both reflect the individual role of each element, but also reflect the interaction of the elements, the results of comparison