How many degrees below zero can Hutai No.8 grape withstand?

In winter, it can tolerate the low temperature of -20℃- 18℃, and the new shoots can still grow at the highest daily temperature of 38℃, which is suitable for cultivation in all grape producing areas in the province. The best planting area is the accumulated temperature of 3800 days ≥ 10℃ and the frost-free period 180 days. Plants are resistant to high temperature, downy mildew, gray mold and anthracnose.

The annual average temperature is above 12℃, the growing period is from April to June, the daily average temperature is above 20℃, the annual average rainfall is less than l000mm, the temperature difference between day and night is large when the fruit is ripe, the sunshine is sufficient and the rainfall is less.

After the grapes are ripe, the harvest time should be strictly controlled: for the common Kyoho varieties, it takes about 35-40 days for the fruits to be colored until they are ripe. The harvesting criteria are: the original color of grape variety Jujiatai No.8 should be completely presented, the fruit seeds are brown, and the minimum sugar content is above 17 degrees, which has the special flavor of this variety.

When harvesting, we should first look at the growth and aging degree of fruiting branches. Generally, the branches are thick, the branches with light load mature first, the branches grow weakly, and the branches with heavy load mature late. Also observe whether the fruit color is full from the paper hole. When harvesting, be sure to handle it gently and put it in a plastic box in a single layer to prevent the ears from squeezing each other.

Baidu encyclopedia-hutai grapes