苹果的外观质量如色泽艳丽、果形端正、果实高桩、五棱突起等,是商品质量优劣和经济效益高低的重要标志,特别是元帅系品种更是如此。但在目前生产条件下,由于生态条件的差异和管理技术的不同,苹果的着色早晚、鲜艳程度、果形指数大小、五棱突起的高低 Apples appearance such as gorgeous color appearance, fruit-shaped, fruit pile, pentagonal protrusion, is the quality of goods and economic indicators of the level of an important symbol, especially the Marshal is even more so. However, under the current production conditions, due to the differences in ecological conditions and management techniques, the coloring of the apple is determined sooner or later, the vividness, the fruit shape index, the height of the pentagonal protrusion