【摘要】 采用４因素二次饱和Ｄ最优设计，通过微机模拟计算，建立了大豆产量与大豆专用肥中氮、磷、钾、褐煤等主要成分用量的数学模型。对参试因素及其产量进行了较系统的分析，获得了最高产量施肥量；筛选出大豆产量１２００１８００ｋｇ／ｈｍ２时，以１５０ｋｇ／ｈｍ２为间距的５组专用肥主要成分优化组合方案；当大豆产量≥１８００ｋｇ／ｈｍ２时，专用肥中主要成分最佳用量为：氮肥（Ｎ）３８９５８８２３ｋｇ／ｈｍ２，磷（Ｐ２Ｏ５）为４７７６１０６２５ｋｇ／ｈｍ２，钾（Ｋ２Ｏ）为１４０４４５１７ｋｇ／ｈｍ２，褐煤为１５９０５３１８６０ｋｇ／ｈｍ２。试验结果为大豆专用肥配方提供了数量化指标更多还原

【Abstract】 A mathematical model,that simulates the contents of the main ingredients like N,P,K,and grey coal in the special soybean fertilizer,was studied in 4×2 saturation D best design Comparisons between predicated and experimentally observed results of the soybean production showed general agreement Further simulations were performed with five optimal integrated designs for the main ingredients of the special soybean fertilizer(150kg/hm 2at each group interval)and at soybean production ranging between 1200 and 1800 kg/hm 2 The best levels of the main ingredients in the special soybean fertilizer were N 38 95 85 62 kg/hm 2,P 2O 5 47 76 106 25 kg/hm 2,K 2O 14 04 45 17 kg/hm 2,grey coal 159 05 318 60 kg/hm 2 while the soybean production was above 1 800 kg/hm 2 The results of the experiment provided a quantitative index and a scientific evidence for the formula of the special soybean fertilizer更多还原