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D-饱和最优回归设计是1980年全国化肥试验网试行方案之一,吉林省布设了氮磷化肥多点田间试验,本文仅对一个点的试验材料进行初步的分析,以供参考。
D-saturation optimal regression design is one of the pilot programs of the National Fertilizer Experiment Network in 1980. Jilin Province has laid out a multi-point field experiment of nitrogen and phosphorus fertilizers. In this paper, only a single point of the experimental materials for preliminary analysis for reference.