Generally, grape pruning should be completed in February, but in the interview, we found that although most growers pruned grapes in time, the quality of pruning was not ideal, and some pruned them later. Grapes in Henan Province should generally be pruned before the Spring Festival, not later than mid-February at the latest, otherwise the normal growth will be affected.

According to the requirements of scientific pruning, the distance between the prepared branches and the supporting branches of each vine should be 20-30 cm, neither too dense nor too thin, and most vines are too dense. According to Yang Chaoxuan from Zhengzhou Fruit Research Institute of China Academy of Agricultural Sciences, the biggest problem of grape pruning is that there are too many branches left, and growers are always reluctant to cut them, thinking that too many branches are left to improve efficiency. This is actually a misunderstanding. Generally, if you leave too many branches, your ears will not grow very big. Like Kyoho, the spike is generally about 0.5-0.75 kg, and the red grape is generally about 1 kg. Too many branches are left, and ears are often too small, which affects the quality of ears.

According to Yang Chaoxuan, it is necessary to control both the retained branches and the raised branches, not to leave too many branches, and to control the new branches well after they grow. Generally, the yield per mu of vineyards is controlled at about 2000-2500 Jin, which can not only ensure the quality of grapes, but also ensure the yield.