采用二次饱和Ｄ－最优设计，结合大田调查与土壤肥力测试，于１９９６～１９９７年在西昌市西乡乡，对攀西地区主要土壤（黄红冲积性水稻土）上Ｎ、Ｐ、Ｋ施用量及配比与小麦产量的关系进行了研究。结果表明：①小麦的需肥顺序为Ｎ＞Ｐ＞Ｋ；②土壤钾含量较丰富，施钾量与产量的关系不显著；③小麦产量随Ｎ、Ｐ施用量的增加而增加，小麦的最佳施肥量为Ｎ：２９４４５ｋｇ／ｈｍ２；Ｐ２Ｏ５：１４０８５ｋｇ／ｈｍ２；Ｋ２Ｏ：１７２５ｋｇ／ｈｍ２。 Based on the field survey and soil fertility test, the authors used the secondary saturation D-optimal design to test the N, P and K concentrations in the main soils (yellow-red alluvial paddy soil) in Panxi region from 1996 to 1997 The application rate and the ratio of wheat yield were studied. The results showed that: (1) the sequence of manure to be fertilized was N> P> K; (2) the soil potassium was rich and the relationship between the amount of potassium and yield was insignificant; (3) the yield of wheat increased with the increase of N and P The best fertilizer amount is N: 29445kg / hm2; P2O5: 14085kg / hm2; K2O: 1725kg / hm2.