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分类回归综合法由回归系数平均法发展而来。对各点肥料效应回归方程进行可用性判别之后,用小区产量平均值建立不同农业条件下的肥料效应方程并据此提出施肥决策方案。本文以在曲周县进行的小麦多点肥料试验为例,论述本法的应用。分类回归综合法简便易行,所得的综合回归方程反映了平均试验条件下的肥料效应,以此作为施肥决策依据。本文又建立了土壤养分平均值对无肥区产量的回归方程,还可提出区域测土施肥决策方案。
Classification Regression synthesis method by the average coefficient of regression coefficient developed. After discriminating the availability of the regression equation of fertilizer effect at each point, the fertilizer effect equation under different agricultural conditions was established with the average of plot yield and the fertilization decision-making scheme was put forward accordingly. In this paper, multi-point wheat test in Quzhou County as an example, discusses the application of this law. The integrated regression method is simple and easy to implement. The obtained comprehensive regression equation reflects the fertilizer effect under the average experimental conditions as a basis for fertilization decision. This paper also established the average of soil nutrients on the output of no-fat zone regression equation, but also put forward the regional soil fertilization decision-making program.