Grape contains minerals such as calcium, potassium, phosphorus and iron, and vitamins B 1, B2, B6, C and P, etc. They also contain a variety of amino acids needed by the human body. Eating grapes regularly is of great benefit to neurasthenia and fatigue.
The fruit in ripe grapes is spherical or oval, with a diameter of 1.5-2 cm; Seeds obovate, short and round at the top and short beak at the base. The umbilical cord is oval in the middle of the back of the seed, with wide grooves on both sides, which can reach 1/4 of the seed. The flowering period is April-May and the fruiting period is August-September.
Extended data:
growing environment
The lowest temperature for grape growth is about 12℃- 15℃, the lowest ground temperature is about 10℃- 13℃, the optimum temperature for flowering is about 20℃, and the optimum temperature for fruit expansion is 20℃-30℃. Such as large temperature difference between day and night, good coloring and high sugar content.
Although grapes can be planted in all kinds of soils, loam and fine sand loam are the best, and sandy soil has good air permeability. But the ability of keeping fertilizer and water is poor. Loam is between sandy soil and clay.
It has strong water and fertilizer retention capacity, and most of them are very fertile. Grapes are easy to blossom and parthenocarpy when they grow vigorously, and have good fruit and high yield under high temperature and light conditions. There is little sunshine at low temperature, the result is not very good and the yield is low.
References:
Baidu encyclopedia-grapes