苹果的色泽是决定果实外观品质的重要因素之一,上色的好坏不仅与果实内的物质成分有密切关系,而且也显著地影响其商品价值。为提高果实红色的发育程度,可采用人工转动果实、套袋、地面铺设反光膜和摘叶等多种措施。据曲泽洲教授报道,日本于 The color of apple is one of the important factors that determine the appearance of fruit. The quality of the color is not only closely related to the material composition of the fruit, but also significantly affects the value of the commodity. In order to improve the development of the fruit red color, a variety of measures such as manually rotating fruits, bagging, reflecting film on the ground and picking leaves can be adopted. According to Professor Qu Zezhou reported that Japan