The 384 maize field experiments were carried out in Yunnan province, and the soil nutrient rich-lack index and fertilizer use efficiency on maize were established. The results indicated that the nutrient rich-lack index of nitrogen was＜50, 50-90, 90-150, 150-250 and ＞250 mg/kg, with the rank of very low, low, medium, high and very high level. Phosphorus rich-lack index was＜5,5-10,10-20,20-50 and＞50 mg/kg,and potassium rich-lack index was ＜40, 40-80, 80-150, 150-300 and＞300 mg/kg. Compared with the Second Soil Survey, nutrient content of nitrogen increased by 30 -100 mg/kg in medium and high level, phosphorus was the same, and potassium reduced for 10-20 mg/kg in medium and low level, but rose by 100 mg/kg in high level. Fertilizer use efficiency of nitrogen, phosphorus and potassium were 18.8% ,40.1 % and 37.9 % , respectively.%通过对云南省384组玉米试验结果分新,建立玉米土壤养分丰缺指标并测算玉米肥料利用率.结果表明,以极低、低、中、高、较高5级划分标准,玉米氮地力养分丰缺指标为＜50、50 ～ 90、90 ～ 150、150～250、＞250 mg/kg;磷地力养分丰缺指标为＜5、5～10、10 ～20、20 ～50、＞50mg/kg;钾地力养分丰缺指标为＜40、40～80、80～150、150～300、＞300 mg/kg.与第2次土壤普查相比,玉米土壤碱解氮含量中高水平增加30 ～ 100 mg/kg;有效磷含量基本不变；速效钾含量中低水平下降10 ～ 20 mg/kg,高水平增加100 mg/kg.玉米氮肥利用率18.8％,磷肥利用牢40.1％,钾肥利用率37.9％.
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