Strawberry is rich in carotene and vitamin A, which can relieve night blindness, maintain epithelial health, improve vision, nourish liver and promote growth and development. ?
Second, strawberries can help digestion and prevent constipation.
Strawberry is rich in dietary fiber, which can promote the peristalsis of gastrointestinal tract, promote the digestion of food in gastrointestinal tract, improve constipation and prevent acne and intestinal cancer.
/iknow-pic.cdn.bcebos.com/ae51f3deb48f8c54088a1ad937292df5e1fe7fef "target =" _ blank "title =" "class =" ikqb _ /iknow-pic . cdn . BCE Bos . com/AE 5 1 F3 deb 48 F8 c 54088 a 1ad 937292 df5 e 1 Fe 7 fef？ x-BCE-process = image % 2f resize % 2Cm _ lfit % 2Cw _ 600% 2Ch _ 800% 2c limit _ 1% 2f quality % 2Cq _ 85% 2f format % 2Cf _ auto " esrc = "/ AE 5 1 F3 deb 48 F8 c 54088 a 1ad 937292 df5 e 1 Fe 7 fef "/>
Extended data
1, the nutritional value of strawberries
Strawberry is known as the "fruit queen" because of its rich nutritional value. It is rich in vitamin C, vitamin A, vitamin E, vitamin PP, vitamin B 1, vitamin B2, carotene, tannic acid, aspartic acid, copper, strawberry amine, pectin, cellulose, folic acid, iron, calcium, ellagic acid and anthocyanin. ?
Especially the content of vitamin C is 7- 10 times higher than that of apples and grapes. The contents of malic acid, citric acid, vitamin B 1, vitamin B2, carotene, calcium, phosphorus and iron are also three to four times higher than those of apples, pears and grapes.
2. Growth habits of strawberries
Strawberries like warm and cool climate. The growth temperature of strawberry root system is 5-30℃, the optimum temperature is 15-22℃, the optimum temperature of stem and leaf growth is 20-30℃, the freezing temperature of flower bud is-10℃, and the temperature of flower bud differentiation must be kept at 5-15. Strawberry in summer, when the temperature is higher than 30℃ and the sunshine is strong, shading measures should be taken.
Strawberry is a light-loving plant, but it has strong shade tolerance. Under the light intensity, the plant is short and strong, the fruit is small, the color is dark and the quality is good. Medium light, large fruit, light color, low sugar content and long harvest period; Weak light is bad for strawberry growth.
Strawberry has shallow root distribution, large transpiration and strict requirements for water, but its growth stages are different. Strawberries have slightly different water requirements. In early spring and flowering period, the lint percentage of strawberry should be lower than 70% of the maximum soil water capacity. The requirement for fruit growth and maturity is the highest, reaching more than 80%. After harvesting, stolons and new adventitious roots should be removed, and the soil moisture content should not be lower than 70%. Autumn is the period of plant accumulation and flower bud formation, and the soil water content should not be lower than 60%. Strawberries are not resistant to waterlogging, so the soil should be permeable. Pay attention to the site drainage in rainy season.
Strawberries should be planted in fertile, loose, neutral or slightly acidic loam. Too sticky soil is not suitable for cultivation. Strawberries can also be planted on sandy soil with more fertilizer and regular irrigation.