1、 Winter shearing time

The time of grape winter cutting must be well controlled, not too early or too late, otherwise it will affect its storage and nutrition, which is unfavorable to the germination and growth of the second year. The best time is 30 days before the tree enters dormancy to bleeding period. If it is cultivated in greenhouse, it should be carried out before film mulching. The specific time is between late October and mid and late November

2、 Pruning method

1. Pruning length: when pruning, the specific pruning length should be judged by its growth trend, the rate of bearing branches and the height of the place where flower buds are planted. Under the same conditions, the branches with strong and good nutrition should be appropriately long, and the flower buds of weak branches should be short cut if they are well distributed. The extended branches should be long and the prepared branches should be short cut. In addition, if the fertilizer and water are insufficient and the area is relatively dry, the pruning is mainly short

2. Pruning position: the tissue at the cutting position will be loose and the water is easy to evaporate. Therefore, during pruning, the cutting mouth should be about 2-4cm away from the bud eye to prevent too much water evaporation and the increase of dry and dead branches. The cut should be on the opposite side of the cut bud

3. Amount of buds: the amount of buds should be well controlled, not too dense or too sparse. It is usually twice as much as the second spring. If 15-20 buds are left on the new shoots of the hedge frame surface, 30-40 buds are left for winter pruning. If the short shoot is trimmed, 8-10 fruiting mother branches shall be reserved