In order to make the grape many times a year, advance or delay maturity, extend the market supply time, and obtain higher economic benefits, the grapes were invited to the protected area from the open field. However, due to the limited growth space of the greenhouse grapes, the quality and yield of the grapes are affected. In order to change this situation, the author has studied the cultivation techniques of Portuguese and Portuguese protected areas. It is considered that the grape is suitable for dwarf plastic trimming technology in the protected area. It can dwarf the tree body, better ventilate and transmit light, improve quality and increase output. . This plastic trimming technique is now introduced to everyone for reference.
First, the buds are fixed and planted to survive the buds and buds. When the buds are l-3 cm long, each bud eye is left with a full, large and flat bud left, and the rest are all erased, called smear. When the staying buds grow to 4-5 leaves, the branches are selected, and two new shoots close to the base are selected for cultivation, and the other branches are thinned out and weighed.
Second, the topping of the new shoots grows upward, and each side of the leaf will grow a secondary shoot. When the secondary shoot grows 2-3 leaves, the heart is picked. When the new shoot grows to 13-l5 leaves, the heart is picked and the heart is picked up. The secondary shoots are left, leaving 3-4 leaves to be topped, and this is repeated until the leaves are not long.
Third, the branches and vines tied to the newly planted grapes when the new shoots grow to 30 cm, it is necessary to tie in time to prevent wind breaks. Tie the vines with hemp rope, horseshoes or straw, but leave plenty of space for the branches to grow. When tying the vines, the tendrils must be removed to prevent cross-winding and waste of nutrients.
4. The winter shears are trimmed 2 weeks after the leaves are immersed in the cold before the cold. It is strictly prohibited to trim during the injury period. Before pruning, the result branches should be separated from the preparatory branches first. As a result, the position of the branches should be higher than the position of the prepared branches, so as to achieve the purpose of dwarfing the trees. When pruning, leave the new shoot on the top of the tree 0.5-1 meters long, cut off all the secondary shoots, and the remaining part is called the result mother branch; after the new shoot on the upper side leaves 2-3 buds, the rest Cut it off and leave part of it as a preparatory branch.
5. In the spring of the second year, the tassel tip is easy to form flower buds at the 5-9th buds of the mother branches, and the 1-4 buds at the lower end rarely form flower buds. Even if flower buds are formed, the flower buds should be removed. Flower spikes are not allowed on the reserve branches. Once found, they will be removed and only two new shoots will be left. The trimming of the two new shoots is the same as the two new shoot trims of the first year. Results The results of the shoots on the mother shoots were taken 5 days before the flower spikes and 7-8 leaves above the spikes.
Repeat the above method in the coming year, so that the purpose of tree dwarf shaping and trimming can be achieved.
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