以2002～2005年山西省中晚熟春玉米区域试验为例,基于优化的AMMI模型采用欧氏距离法分析地点鉴别力的大小,采用组内相关系数评价它们在年内、年际的重演性。结果表明,2004～2005年的地点鉴别力差异明显,而且有较好的重演性;共明确9个高鉴别力的地点,这些地点在不同条件下有高度的一致性。基于AMMI模型分析地点鉴别力的方法适用于玉米品种区域试验。 Taking the middle-late spring spring maize regional experiment in Shanxi Province from 2002 to 2005 as an example, the Euclidean distance method was used to analyze the location discriminatory power based on the optimized AMMI model, and the intraclass correlation coefficient was used to evaluate the reenactment in the year and interannual. The results showed that there was significant difference in the discrimination of the locality from 2004 to 2005, and there was a good repeatability. A total of 9 sites with high discriminatory power were identified, which were highly consistent under different conditions. The method of locality discrimination based on AMMI model is suitable for regional trials of maize varieties.