When is the grapes pruned and when is the best time to prune the grapes?

Grape pruning is divided into two categories. The first is winter pruning, which is a pruning carried out after the leaves fall in winter; The second is the growing season pruning, also known as summer pruning, which is a kind of pruning management carried out during the vegetative growth period of grapes. The grapes are abundant and have dense branches, so summer pruning is important.

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.

Grapes are generally pruned best in summer and winter, in summer grape vines sprout a large number of buds, grow new shoots, this time should be pruned, and in winter, grapes enter the hibernation period, timely pruning can avoid old branches, diseased branches, etc. absorb nutrients.

Summer pruning: Summer pruning of grapes, starting with bud wiping, can be done in 3 steps.

The first time is to do it before the bud eye germinates to the leaf spreads. At this time, it will be obvious to see some of the earliest and more budding buds on the weak branches left by winter pruning, and some old plants tend to sprout some bud eyes from the base, and it is most suitable to wipe the buds at this time. You don't need any utensils, you can just operate it by hand.

Erase the bud at the base of the branch, the bud on the thin branch, the stunted bud, and the thin pointed bud on the double bud. This summer pruning can erase 60%-70% of excess buds.

The second summer pruning is usually done when the new shoots have grown to 7-8 leaves, and the size and strength of the inflorescence can be clearly seen. This summer shearing is carried out in combination with the binding of new shoots. In the specific operation process, the basic retention of new shoots should be determined according to the variety, soil fertility, tree potential and planned yield.

If it is a trellis red grape, the soil fertility is better, the tree is stronger, the planned yield is 2500 kg, and the average spike weight is 600 grams, so it is advisable to leave 10 new shoots per meter of the shelf surface.

The third summer shear is generally carried out in combination with the second binding of new shoots. In the second summer pruning, there are often more branches, and this summer pruning should leave new shoots with inflorescences and remove fruitless branches. If there are many fruit branches, it should be left weak and strong, and dense and thin.

Winter pruning: Prune in mid-October, not too early or too late.

Grape pruning.

Grape pruning has many functions. Pruning can effectively improve the nutrient distribution of the plant, so that the plant grows better, and at the same time, it can also improve ventilation and light, so that the remaining branches have sufficient nutrients. In addition, pruning the grapes can effectively change the appearance and shape, effectively differentiate the flower buds, and help the next year's fruit to be more fruitful.

Grape pruning month.

The grapes are generally pruned in winter, from early December to mid-February. At this time, the climate is suitable, pruning the plants will not affect the plants too much, and it will also promote the germination of new branches.

Grapes need to be pruned several times.

Grape pruning is generally done twice a year, once in summer and once in winter. The exact pruning time depends on the local climatic conditions, but the summer is generally around June and the winter is around December.

Grape pruning method.

Summer pruning: Grapes generally need to be pitted in the summer. Once the grapes have grown their inflorescences, the shoots are fixed and allowed to climb and grow.

The heart-to-heart treatment is then used to remove the shoots and excess leaves, and to promote the flowering and fruiting of the grape shoots. Winter pruning: Grapes grow slowly during the winter months and almost cease their physiological activity.

At this time, heavy pruning can be carried out, and most of the branches can be cut off, leaving only the strong main branch.

Precautions for grape pruning.

When pruning grapes, make sure the cut is smooth and the knives are sharp. Otherwise, the wear and tear of the vines will intensify. In addition, simple treatment is required after pruning. It is best to apply a protective agent to the lead mouth of the injured mu.

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.

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.

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.

1. When pruning, the incision should be smooth, and the knives used should be sharper, otherwise it will aggravate the wear and tear of the trousers and vines.

2. After the pruning is completed, some simple treatment needs to be taken, and it is best to apply some protective agent to the wound. Early spikes.

Grape pruning is mainly in winter and summer.

1. Winter pruning: Winter pruning will not significantly affect the carbohydrate nutrition of the plant at any time from the deciduous type to the second year before the growth of the second year, nor will it affect the growth and fruiting of the hidden plant. In the northern winter soil overwintering area, winter pruning must be carried out as soon as possible after the leaves fall. In the non-buried overwintering areas in the south, winter pruning can be carried out after 3 to 4 weeks after the leaf fall and before the wound flow, and the time is generally from 1 month after natural leaf fall to January of the following year, when the tree body enters a deep dormant period.

2. Summer pruning: Summer pruning refers to the pruning carried out during the entire growth period from budding to before the leaves fall, and the task of pruning is to adjust the nutrient distribution of the tree, determine the reasonable load of new shoots and the load of fruit ears, so that the nutrients can be sufficient for the fruit; Regulate the growth of new shoots, maintain a reasonable leaf curtain structure, and ensure that the plants are ventilated and transmitted; Balanced vegetative growth and reproductive growth can not only promote flowering and fruit set, improve fruit quality and yield, but also cultivate full and robust branches with good flower bud differentiation. Make the plants easy for field management and pest control.