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1200和1800kg/hm²之间，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）38.95-88.23kg/hm²,磷（P₂O₅）为47.76-106.25kg/hm²,钾（K₂O）为14.04-45.17kg/hm²,褐煤为159.05-318.60kg/hm².试验结果为大豆专用肥配方提供了数量化指标。

关键词: 大豆, 专用肥, 主要成分配比

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/hm² at each group interval)and at soybean production ranging between 1200 and 1800 kg/hm² The best levels of the main ingredients in the special soybean fertilizer were N 38.95-85.62 kg/hm²,P₂O₅ 47.76-106.25 kg/hm²,K₂O 14.04-45.17 kg/hm²,grey coal 159.05-318.60 kg/hm² while the soybean production was above 1800 kg/hm² The results of the experiment provided a quantitative index and a scientific evidence for the formula of the special soybean fertilizer.

Key words: Soybean, Special fertilizer, Proportions of the main ingredients

中图分类号: 

• S565.106