Grape originated in West Asia and was introduced to China in the Western Han Dynasty. Now it is distributed in Hebei, Henan, Shanxi and other provinces in China. In Historical Records, it is recorded that "the Chinese envoy took the facts, so the emperor began to plant alfalfa, putao and fertile land", which shows that the earliest grape planting began during the period of Emperor Wu of the Han Dynasty, and was brought back by Zhang Qian, who was the ambassador to the western regions and took the lead in opening the Silk Road.

Grape, a tall twining vine of Vitaceae, has strong performance, and its young stems are bald or slightly woolly; The leaves are paper, oval or round; Inflorescence is large and long; Calyx is small and yellow-green cup-shaped; The style is short and conical; Berries are ovoid to ovoid oblong, and when they mature, they are purple-black or red with cyan; Flowering in June; The fruiting period is September-1October. In Compendium of Materia Medica, Li Shizhen said: Grapes, made of peach in Hanshu, can make wine. If people feed and drink them, they will be drunk, so they are famous.

Introduction to grapes

Grapes like warm, dry and well-ventilated environment, like plenty of sunshine, have a certain degree of cold tolerance, and are not strict with soil quality, and are suitable for loose and fertile sandy soil. The propagation method is mainly divided into plants, and it can also be propagated by cutting. Grapes have a high demand for water, and strict control of water in soil is a prerequisite for planting good grapes. Grape needs more water in the early growth stage or vegetative growth stage, and needs less water in the late growth stage or fruiting stage, so it is necessary to avoid damaging the roots to avoid affecting the quality.

Grapes avoid rain and dew. Rain for many years can easily lead to insufficient sunshine and limited photosynthesis. Excessive absorption of water can easily lead to excessive branches growth 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 as much as possible during flowering; The irrigation amount in fruit-bearing period in fruit-cracking areas should also be controlled. In water-deficient and drought-prone areas, straw should be properly covered to maintain soil moisture and control the growth of grass.

The above contents refer to Baidu Encyclopedia-Grape (Vitaceae)