Grape is a vine with cylindrical branches, oval leaves, oval and spherical fruits. It blooms in April-May and bears fruit in August-September. It can't stand low temperature, and the temperature can't be lower than 12 degrees. The suitable growth temperature is about 25 degrees, such as large temperature difference between day and night, good coloring and high sugar content.

Grape pruning time

1. Pruning grapes in spring can be carried out in March-April in spring. At this time, pruning by wiping buds can erase thin buds, multi-head buds and budding buds, reduce the loss of nutrients, and supply all nutrients to the remaining buds, commonly known as cost-saving cultivation. 2. Pruning grapes in summer can be carried out in June and July, and the fruiting branches and vegetative branches are pitted and slightly treated. In addition, ears need to be trimmed, ears need to be trimmed, ears need to be thinned and valleys need to be thinned. 3. Pruning grapes in autumn can be carried out in September-65438+10. Do a good job in the second coring, thinning branches, thin branches, overlapping branches and branches with low lignification. Adjust the number of branches, improve the ventilation and lighting conditions, and make the shelf surface more breathable. 4. Pruning grapes in winter can be carried out from February 65438 to1October 65438. Pruning grapes in winter has the largest pruning amount and the largest pruning branches. Pruning at this time can increase the yield of the next year.

Pruning method of grapes

1. Pay attention to keep a certain distance between the scissors and the bud eye when cutting short. If it is too close, it will affect the growth of bud eyes in the coming year. Then, the number of buds depends on the length of the treetops. Shorten the treetops by 2 buds and choose full buds. 2. Shrinkage is selective pruning, which is a very important job. Because old trees have many branches and consume more nutrients, they should be pruned according to their state. If it is a weak branch for many years, it is necessary to cut off the weak branch and leave the strong branch for reproduction. If it is a strong branch, the other way around. 3. Thin cutting is rough cutting. There is a rough cutting principle, that is, six cuts and six cuts are not cut. Cut off the twigs and leave the strong and incomplete ones intact, the far ones near, the double ones single, the underdeveloped ones fully developed, and the old ones new.

Matters needing attention in grape pruning

When pruning grapes, attention should be paid to pruning without stubble, and the pruning thickness should be 1-2cm to avoid winter buds drying up. White latex can be applied to the incision, and it should be placed in a semi-cool, well-ventilated environment, protected from light and watered.