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在以磷定氮田间试验结果的基础上,应用抛物线回归方法确定作物最高产量施肥量。该方法是国内外定量施肥研究的基本方法,但其试验统计结果确定的施肥量与用抛物线回归方程求解的作物最高产量施肥量严重背离。为了探明二者背离的原因,自2004年以来,在玉米和谷子上进行了试验研究,结果表明,传统以磷定氮试验方法试验设计中未考虑施肥比例对作物产量的影响,结果导致施肥处理间产量统计检验不显著,形成抛物线回归分析方法的误用,致使确定的作物最高产量施肥量失去科学性。
Based on the results of field experiments with phosphorus determination, the highest yield of fertilizer was determined by the method of parabola regression. This method is the basic method of quantitative fertilization research both at home and abroad, but the test results of fertilization determined by the test results deviate from the highest yield of fertilizers solved by the parabolic regression equation. In order to find out the reasons for the divergence, the experiment on corn and millet since 2004 showed that the effect of fertilization proportion on the crop yield was not considered in the traditional experimental design of phosphorus nitrogen fixation. As a result, fertilization Statistical tests of production between treatments were not significant, forming a misunderstanding of the parabolic regression analysis method, resulting in a loss of scientificity in determining the maximum yield of fertilizers for the crop.