Eating grapes without spitting out their skins is a tongue twister originally used for teasing, but this joke has been confirmed by experts that many nutrients of grapes exist in the skins. American researchers have extracted hundreds of natural compounds from plants eaten by human beings. After repeated experiments, it was found that grape skin had more than 70 kinds of inhibitory effects.

Grape, a tall twining vine of Vitaceae, has bare or slightly fluffy young stems; Leaves are paper, oval or round; Inflorescence is large and long; Calyx is small and yellow-green cup-shaped; Style short, conical; Berries are oval to oval.

When mature, it is purple-black or red with cyan; Flowering in June; Fruiting date 9- 10 Li Shizhen said in Compendium of Materia Medica: Grapes and Han scripts can be used as Pu Tao to make wine. If people feed it, it will make you drunk, so it is famous.

Grape growing environment

Grapes have a high demand for water, and strictly controlling the water in the soil is the premise of planting grapes well. Grapes need more water in the early growth stage or vegetative growth stage, and less water in the late growth stage or fruiting stage, so it is necessary to avoid damaging the root system so as not to affect the quality. Grapes shelter from the rain.

Years of rainy weather can easily lead to insufficient sunshine, limited photosynthesis, and excessive water absorption can easily lead to excessive growth of branches and high humidity, which can easily lead to various diseases, such as black pox and gray mold.

Therefore, it is ideal to keep the branches at 40-70 cm when flowering; The amount of irrigation in the fruit-cracking area should also be controlled during the fruit-bearing period. In areas prone to water shortage and drought, straw should be properly covered to keep soil moisture and control the growth of grass.