What fruit is an apple?

Apple is a kind of fruit that everyone is familiar with. It is chubby and covered with red harvest. Apple is a kind of fruit that grows in the north. The idiom "fruitful" refers to it.

The height of flowering deciduous trees of apple trees can reach 15 meters, and it is generally 3-5 meters high under cultivation conditions. The trunk is grayish brown, the old bark is irregular and the branchlets are smooth. The leaf sequence is simple and alternate, oval to ovoid, and the leaf margin is serrated. Due to the different climate, the flowering period of apples varies greatly. Generally in April-May, there are 3-7 flowers in each bud, and the central flower blooms first. Corymb with white petals, pink buds, 20 stamens and 5 styles. Apple trees begin to bear fruit 2~3 years after planting, and the fruit is kernel, and its color and size vary with varieties.

Apples like light, slightly acidic to neutral soil. There are more than 7,500 known apple varieties. Improved varieties: "Red Star Series", "Red Fuji" and "Jonathan". In addition to fresh varieties, there are apples for cooking. Because the fruit acid of apple has the function of retaining water, it is suitable for baking

Apples contain a lot of pectin, which can reduce cholesterol and bad cholesterol, and can also control diseases such as asthma. Apples are rich in nutrition. It contains vitamins A, C, E, protein, fat, citric acid, phosphorus, calcium, zinc, sodium and other trace elements, and has many functions, such as nourishing brain, enriching blood, sleeping peacefully, moistening lung and pleasing heart. "