Abstract: In order to provide a reference basis for optimizing and adjusting the apple variety structure in Longdong area of Gansu Province，12 medium and early maturing apple varieties were used as test materials，and 9 fruit quality index values（single fruit weight，fruit shape index，hardness，soluble solids content，titratable acid content，solid acid ratio，a^* value，b^* value and L^* value）were determined.The fruit quality was comprehensively evaluated by grey correlation analysis，DTOPSIS method and membership function method.The results showed that Honeycrisp had the largest single fruit weight，Fujiuhong had the largest fruit shape index，soluble solids content and solid acid ratio，while Hongfudi had the largest hardness and L^* value，and Qinyang had the largest titratable acid content，Golden Century had the largest a^* value，while the b^* value of Red Prince was the smallest.The variation coefficient of solid acid ratio was the largest（37.62%），while that of fruit shape index was the smallest（5.75%）.Due to the different calculation methods，the comprehensive evaluation results of gray correlation degree method，DTOPSIS method and membership function method were significantly different，but the top four varieties in the comprehensive ranking including Fujiuhong，Luli and Huashuo，which could be popularized and applied as medium‐early maturing apple varieties with excellent comprehensive quality in Longdong area of Gansu Province.

Key words: Mid‐early maturing apple, Grey relational degree method, DTOPSIS method, Membership function method, Quality evaluation, Fujiuhong, Luli, Huashuo

摘要： 以12个中早熟苹果品种为试材，测定9项果实品质指标值（单果质量、果形指数、硬度、可溶性固形物含量、可滴定酸含量、固酸比、a^*值、b^*值和L^*值），采用灰色关联度法、逼近理想解排序法（DTOPSIS）和隶属函数法对果实品质进行综合分析评价，为优化调整甘肃陇东地区苹果品种结构提供参考依据。结果表明，蜜脆的单果质量最大，福九红的果形指数最大、可溶性固形物含量和固酸比最高，红富笛的硬度、L^*值最大，秦阳的可滴定酸含量最低，金世纪的a^*值最大，红王子的b^*值最小；固酸比的变异系数最大（37.62%），果形指数的变异系数最小（5.75%）。灰色关联度法、DTOPSIS法和隶属函数法计算方法的不同导致综合评价结果差异显著，但综合排名前四的品种均有福九红、鲁丽和华硕，福九红、鲁丽和华硕可作为综合品质优良的中早熟苹果品种在甘肃陇东地区推广应用。

关键词: 中早熟苹果, 灰色关联度法, DTOPSIS法, 隶属函数法, 品质评价, 福九红, 鲁丽, 华硕