fruit

Apple is a kind of fruit that everyone is familiar with. It is chubby and has a bumpy red color. Put it in your hand and it will gently stick to your palm. When you choose it from thousands of apple trees, it is a kind of happiness for it. It can bring sweet taste to people. This is its greatest happiness. Apple is a fruit that grows in the north. The idiom "fruitful" refers to it. When you walk through an apple orchard, its seductive taste will accompany the breeze into your nostrils and even the whole body. The long-lost comfort will burst out from your long-buried nerves. Is there anything more relaxing than this? Let me introduce Apple!

Flowering apple tree deciduous trees, trees up to 15 meters high, generally 3 to 5 meters high under cultivation conditions. The trunk is taupe, the old skin has irregular longitudinal cracks or flaking, and the branchlets are smooth. The leaf order is a single leaf alternate, elliptic to ovoid, with margins serrate. Umbrella inflorescence, petals white, pink with sputum, stamens 20, style 5. The fruit is pome fruit, and the color and size vary by species.

Apples like light, like slightly acidic to neutral soil. It is most suitable for sandy soils with deep soil layers, rich in organic matter, and well-ventilated drainage. There are more than 7,500 known varieties. Good varieties: "Red Star Series", "Red Fuji", "Jonathan" and so on. In addition to the fresh varieties, there are still apples for cooking. Since apple fruit acid has the function of retaining moisture, it is suitable for roasting. Apples contain a lot of pectin, a soluble fiber that lowers cholesterol and bad cholesterol. It can also control conditions such as asthma and chronic obstructive pneumonia.

Apple has a special role in enhancing children's memory. Apple contains not only a variety of vitamins, lipids, minerals, sugars and other nutrients necessary for the brain, but also contains fine fibers that are good for children's growth and development and zinc that enhances children's memory. Zinc is an essential element in the formation of nucleic acids and proteins that are closely related to memory. Zinc deficiency can cause dysplasia in the hippocampus of the cerebral cortex. Once the zinc in the food is reduced, the child's memory and learning ability will be severely damaged, and the damage can continue into adulthood. In order to make children's memory good, children should be allowed to eat more apples.

Fifth grade: Wang Shouqing