Grape spring management key technology

Spring is the season when the buds of the grapes sprout, the elongation of the branches and the heading and flowering results. Strengthening the management of the spring grapes can improve the yield and quality of the grapes.

In the middle and late February to the beginning of March, the germination water is germinated and the nitrogen fertilizer is applied. Orchards that are conditional at this stage should be flooded in the garden in time to ensure that the sprouts are neat. At this time, when the flower buds continue to differentiate and the new shoots start to grow vigorously, a large amount of nutrients are needed. Therefore, the manure and manure are mixed with 0.2% urea, and the amount of fertilizer applied accounts for about 15% of the whole year.

From March to mid-April, the shoots, buds, spikes and disease control were fixed. After the winter renovation, the winter buds on the mother branches usually have 70 to 80% germination. At this time, attention should be paid to staying buds. Too much buds, easy to waste nutrients, the tree is weak, not conducive to fruit set; but if the buds are too small, it is easy to promote the branches and vines grow vigorously and easy to fall and fall, so pay attention to the buds.
Wipe bud: Usually, when there are multiple buds on the mother branch, one bud is left every 15-20 cm, and each result leaves 2 to 5 new shoots, and the rest is erased from the base. When buds are applied, the buds or weak buds in the double buds are generally erased, and only one tip is left in one bud. In order to ensure the yield, when the new shoots grow to 4 to 5 leaves, it is determined whether or not the first coil has a flower spike, but this wastes more nutrients.
Fixed tip vines: The retained new shoots leave 5 leaves above the flower spikes before flowering, while the leaves are left with 8 leaves without flowers. After the topping, a large number of germination tips were left, leaving only the top 1 or 2 secondary tips and leaving 2 leaves repeatedly to be topped, and the remaining secondary tips were completely erased. At the same time, it is necessary to tie the vines according to the growth of the vine
Treatment of flowering ears: In order to ensure the fruit setting rate, the spikes of 1/5 of the spikes are usually removed by artificial methods, and 0.3% boron fertilizer plus 0.5% urea is sprayed at the flowering stage. Five days after flowering, the fruit trees with more results were artificially thinned and then bagged.

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