水是苹果树体构成中最多的一种成分。其中果实中水为85%左右,叶片为61%左右,根部为47%左右,一年生枝为40%左右,多年生枝和树干为40%左右。水不仅含量最多,同时水又是碳水化合物的主要成分。此外,根部吸收肥料、叶片制造营养物质的运转等生理活动,水也是必不可少的成分。因此水对于苹果树的高产优质具有重要作用。 Water is the most abundant component of apple trees. Among them, the water in the fruit is about 85%, the leaf is about 61%, the root is about 47%, the annual branch is about 40%, the perennial branch and the trunk are about 40%. Water is not only the most abundant, but water is also a major component of carbohydrates. In addition, the roots absorb fertilizers, leaf nutrients production operations and other physiological activities, water is also an essential ingredient. Therefore, water plays an important role in the high yield and quality of apple trees.