How to prune the grapes and when to prune the leaves

Grape pruning techniques.

2. Proper shoot retention: the amount of shoot retention has a great impact on the yield quality and plant growth and development. Generally, the varieties with weak growth and strong erection have 13-15 tips per square meter of shelf surface, 10-13 tips with medium growth, and 7-9 tips with vigorous growth.

When pruning, pay attention to the fine and coarse, and the disease and strong.

3. Length of branches and vines: According to the characteristics of the variety, the growth of branches and vines, the frame type and the climatic conditions of fertilizer and water, the mixed pruning method of long, medium and short tips is adopted. If the variety grows vigorously, the branches are thick, the shelf surface is large, and the water and fertilizer conditions are good, the short tip with 2-3 bud eyes can be used to prune, and the middle tip with 4-6 bud eyes can be used in between.

4. Renewal pruning: Double-branch renewal is a common method, that is, leaving 2 annual branches on both sides of the same base branch. The upper branch is pruned with medium and long tips for the fruiting mother vine, and the lower branch is pruned with short tips for the preparation of the vine, and the upper branch is cut off during the winter pruning of the second year, and the lower branch is still left with a long and a short according to the method of the previous year, which can slow down the rise of the fruiting part, so that the plant can maintain a vigorous fruiting and growth state, and ensure a stable harvest year after year.

Oh, after picking the grapes.

There are several parts of summer grape pruning, and there are several periods. Generally in winter, some new shoots will be pulled, and some vines will grow after the bud eyes grow. After growing, it is necessary to prune it moderately, subtract some unwanted shoots, generally at this time, it is necessary to operate several times, because not every branch growth is in the consent period, there will definitely be fast and slow.

After that, we have to prune again, this time to build some weaker branches, just leave some slightly stronger branches. It is also more convenient and better to carry out the photosynthetic effect by avoiding others to fight for nutrients together. Some of the denser branches can also be appropriately subtracted.

When the leaves of the grapes turn yellow, they should be treated in time, and if they are caused by the scorching sun, they should be moved to a semi-shaded place or a shade should be built. If watering is too frequent, stop the water immediately and drain the excess water. If it is caused by the lack of nutrients in the soil, proper fertilization is required, and Ribery Yanwo water-soluble fertilizer can be used.

The pruning of the grapes is usually carried out after the leaves have fallen, around November and December in autumn and winter. During this time, the temperature is suitable and the grapes are better healed after pruning.

Grape is a perennial vine plant, which needs branch renewal and needs to regulate the relationship between vegetative growth and reproductive growth. This allows the plant to grow robustly and maintain its vigorous fruiting capacity. Thus, prolonging the life span and fruiting years of the plant, to achieve the purpose of high yield and high quality.

In fact, grapes are suitable for pruning all year round, especially dormant pruning. The four-season pruning includes bud wiping in spring, topping and minor treatment in summer, and thinning weak branches and useless branches in autumn to solve the problem of canopy closure on the shelf surface. The largest amount of pruning in winter is used to solve the problems of branch regeneration and adjusting the strength and yield of trees.

How to time to prune your vines

Physiologically speaking, it should be that as the temperature drops after the leaves fall, the nutrients from the upper part of the branch slowly flow back to the lower part of the branch, and the grapes officially enter the overwintering state, which is the time for winter pruning. The reality is that our country spans so much from north to south. Therefore, the morning and evening and speed of cooling vary in each place, and it is difficult to have a uniform pruning time.

How to prune the vines

In the specific operation, the north should bury soil to prevent cold. Therefore, it is necessary to complete the winter shearing and removal before burying the soil, and if you catch up with the warm winter, sometimes you don't care whether the leaves are falling and start the winter pruning. In recent years, the rise of fully enclosed and laughable rain shelter, there is no concern about burying soil to protect against the cold.

Generally, winter shearing is carried out before or after 39 days, and the most direct reason is that 3949 is too cold, and the work is sinful, so it is warmer and then talked.

The pruning method should be adjusted according to the growth of the plant and the stage of growth. If the tip of the vine is centimeter thick, it should be cut in meters. If the vines are not growing well, the pruning position can be shortened to the meter.

Weak grape shoots should be re-pruned, which can help the plants grow better and better. In addition, when pruning, it is necessary to prune diseased branches and yellowed branches to avoid unnecessary consumption of plant nutrients and improve the yield and quality of fruits.

Overview of grape branches.

Grape branches are plants of the genus Vitis vinifera. The flowering period is from April to May, and the fruiting period is from August to September. The minimum temperature required for the growing season is about 12 degrees Celsius, the minimum ground temperature is about 12 degrees Celsius, and the temperature for flowering is about 20 degrees Celsius.

The optimal temperature during the fruit expansion period is 20-30 degrees, such as a large temperature difference between day and night, good coloring, and high sugar content.

Pruning time for grape branches.

1.Spring pruning, the pruning time of spring grape branches is from March to April, which can erase fine buds, multi-headed buds and existing buds, reduce the loss of nutrients, and the remaining nutrients can be concentrated to supply strong buds, commonly known as land-saving cultivation. 2.

Summer pruning, summer pruning of grape branches takes place from June to July. Fruit branches and vegetative branches should be cored, auxiliary branches should be slightly treated, and fruit ears should be shaped, smoothed, thinned, and grained. 3.

Autumn pruning: The autumn pruning of the vines takes place from September to October to allow for a second coring. Dense branches, fine branches, cross branches, and branches with low degree of lignification can be removed, the number of branches can be adjusted, and the ventilation and light conditions can be improved, so that the shelf surface has strong permeability.

4.Winter pruning: The winter pruning of the vines takes place from December to January.

Grape shoots are pruned most in winter, with the largest number of shoots to be pruned. Winter pruning is an effective way to determine the annual yield for the coming year.

Grape pruning method.

1.When cutting short, the scissors and the bud eyes need to be kept at a distance. If it is too close, it will affect the growth of the bud eyes.

After that, the number of buds left depends on the length of the treetops. Shorten the treetops by 2 buds and choose the full buds. 2.

Shrinkage, i.e. selective pruning, is an important job. Because old trees have many branches, they will consume more nutrients, so old trees lose a lot during the winter dormancy period, so 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 a strong branch to propagate.

3. Thinning, that is, rough cutting. There is a principle of rough cutting, that is, six cuts and six non-cuts. Prune off the thin branches to leave the strong ones, cut off the incomplete ones to leave the complete scattered ones, prune off the distant branches to leave the near branches, prune off the two branches to leave a single branch, cut off the stunted ones to leave the developed ones, and cut off the old branches to leave the new branches.

Precautions for pruning grape branches.

When pruning grape branches, it is necessary to pay attention to the cutting edge to be flat and smooth, leaving no stubble, and the cutting edge should be 1-2cm thick to avoid drying out winter buds. You can apply white latex to the wound, keep it in a semi-shaded environment, opaque, and do not water.

Grape pruning is usually done around November and December, when the pruning is done to cut off the branches that are not growing well, as well as some diseased branches. The cut of the trimming should be smooth, and some protective agent should be applied after trimming.

Pruning of the grapes is usually carried out after the leaves have fallen, probably between November and December, before the vines bud break in the spring. Of course, if you find that you need to prune, you can do it.

Method:

1. Pruning should be carried out according to the growth of the plant, if there is a thickness at the top of the vine, it can be cut in the place, and the growth is slightly worse, it can be shortened to.

2. For grapevines that have grown for a long time, pruning is mainly to cut off some branches that are not growing well, and to re-prune them when they are in progress, so that they can grow better.

3. During the maintenance period, it is inevitable that there will be diseased branches and leaves on the vines, and such branches and leaves should be pruned as soon as possible to avoid infecting more plants. In addition, some yellow, dry old leaves should also be cut off.