目的:探讨‘金冠’苹果品质形成的关键时期和不同成熟阶段的区分,为判断其适宜采收期、实现优质生产提供理论参考。方法:采用常规方法测定果实单果重、可溶性固形物(TSS)、可溶性糖、可滴定酸、糖酸比、维生素C(V_c)、硬度等品质指标;采用静态顶空和气相色谱-质谱联用技术测定果实挥发性成分;高效液相色谱技术测定果实糖酸组分。结果:金冠果实发育后期单果重、TSS、可溶性糖、糖酸比、 OBJECTIVE: To explore the key period and differentiation of ’Golden Delicious’ apples from different mature stages in order to provide theoretical reference for judging their suitable harvesting period and realizing high quality production. Methods: Quality indicators such as fruit weight, soluble solids (TSS), soluble sugar, titratable acidity, sugar and acid ratio, vitamin C (Vc) and hardness were measured by routine methods. Determination of technical volatile components of fruits; HPLC determination of sugar acids and acids components. Results: The fruit weight, TSS, soluble sugar, sugar / acid ratio,