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大金星山楂采前一个月平均单果重增加很多，可食部分所占比例略有上升，糖酸含量增加较多，后期以果糖和柠檬酸占主要部分；淀粉前期积累，采收时有所降低，单宁含量虽略降趋势；乙烯发生量较少，发生量增加与果肉硬度下降同步发生。
The average fruit weight increased a lot in the month before the harvest of the great Venus hawthorn, the proportion of the edible part slightly increased, the content of the sugar acid increased more, the later part mainly occupied the fructose and the citric acid; Although the content of tannin slightly decreased; the amount of ethylene produced was less, and the increase occurred with the decrease of the hardness of the pulp.