How to prune grapes after flowering and fruiting?

If you want to make the vines in the north survive the winter safely, keep the temperature above 6 degrees, and cover them with soil for heat preservation. About 10 days before burying the soil, it is necessary to irrigate the frozen water once, which can not only avoid freezing the root system, but also prevent drought in early spring. Water thoroughly and well. After defoliation, pruning should be carried out in time, branches and tendrils should be tied up and covered with thin soil. Later, hay or corn straw should be prepared for the second covering, at which time the soil thickness should be more than 60 centimeters, so as to avoid freezing.

1. how to prune flowering

1, pinching treatment: before flowering, pinching treatment should be carried out on the newly grown branches and tendrils, and the pinched part is generally about 10 centimeters long.During its growth period, tendrils should be cleaned up, which can save nutrient consumption and facilitate the growth of branches and tendrils and later fruit grains.When pinching, all the side vines should also be treated.

2. Pick off the flower spikes: The nutrition of the grape itself is limited. If there are too many flower spikes, they should be picked off in time, so that the remaining fruit spikes can absorb enough nutrients to maintain better growth.Generally, one inflorescence is left for each fruiting branch, and the rest should be picked off.Ten days before flowering, the lateral ears and the spikelets on the edges are cut off, and only 13-20 spikelets in the middle part are kept.If it is not pruned, it will not be able to bear all the fruits if it is too dense, but will consume a lot of nutrients.

2. How to trim after the result

After the flowers fall, the grapes will be fruited, about a week after the flowers fall, and the grapes will be about the size of mung beans.The fruit grains with weak growth, the fruit grains inside the cluster and the fruit grains on the top of the cluster are cut off, and finally 40-120 fruit grains are reserved for each cluster, so that the weight of the ripe grape cluster can be stabilized at 300-1200 grams, and the uniformity of the cluster can be ensured.In addition, when the ear grows to 15-20 centimeters, the inflorescence tip can be cut off by 1/4, which can save nutrients, facilitate the growth of fruit grains and achieve high yield better.

Grape