Red grape pruning principle in winter
In recent years, red wine grape cultivation in Luliang County is a pillar industry for agricultural development. The planting area amounts to 9000 mu, the output reaches 27 million kilograms, and the output value reaches 216 million yuan. The county's planting technology has also improved rapidly, and the cultivation model has become more and more mature. Winter pruning is an important basis for the production of grapes in one year. The red pruning principle in Luliang County in winter:
1, to pruning the main tip, taking into account the principle of pruning in the tip. Since the county's main cultivars are red cultivars, their growth tends to be prosperous, and their flower buds move outwards. Therefore, the long shoots must be pruned and the middle shoots must be pruned.
2. The principle of "four look" is to look at the growth of trees, see the distribution of buds, look at varieties, and look at the maturity of branches to trim. Generally speaking, the flower buds of trees that grow vigorously are relatively outward, and they must be properly cut; the flower buds that are weak in growth are relatively close to the front, and under the premise that there are enough flower buds, they can be properly cut. If some of the shoots have 2 to 3 relatively full flower buds on 6 to 8 shoots, they can be pruned; otherwise, the length of pruning should be determined depending on the distribution of winter buds on the shoots. The distribution of flower buds of different species is also different. When pruning in winter, it must be treated differently. The long-changing trend is appropriate for long cuts and the weak growth is appropriate for short stays. When pruning in winter, the preserved branches must be matured and not completely debrided. Generally cut at a diameter of 0.8 to 1 cm 6-12 buds of female vines, and winter buds must be strong enough to ensure that there are enough flowers in the second year.
3. In the pruning process, "short" does not mean "long." If there are enough flower buds on the front of the branches during winter cutting, keep them as short as possible. This will facilitate the management of future branches.
4, remove pests and branches, too dense branches, thin branches.
5, scrape off the main side of the vine, because there are a large number of pathogens in the rough skin, all must be removed.
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