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着色优劣是衡量红富士苹果质量高低的重要指标之一.为促进红富士苹果的着色,要采取下列技术措施。(1)品种选择适合本地气侯条件的品种或品系,如北部较冷地区宜选用岩富10、秋富1,黄河流域及周围地区以长富2为宜.(2)叶果比合理的疏花疏果,增大叶果比(不低于50:1),以增加果实中养分含量.(3)套袋对红富士果实套袋,不仅可以防止病虫
The pros and cons of coloring is one of the important indexes to measure the quality of Red Fuji apples. To promote the coloring of Red Fuji apples, the following technical measures should be taken. (1) Varieties Select varieties or lines suitable for local climate conditions, such as Yanfu 10, Qiufu 1 in the colder areas in the north, and Changfu 2 in the Yellow River basin and the surrounding areas. (2) Flower thinning, increase the ratio of leaf (not less than 50: 1), in order to increase the nutrient content in the fruit. (3) bagging Red Fuji fruit bagging, not only to prevent pests