Key points of dwarfing and pruning in greenhouse grape
1, wipe buds
After the colonization and survival, the buds were set. When the buds were 1-3 cm long, each bud left one full, large and flat bud left, and the Others were all erased. When the leaves are to be selected and the shoots grow to 4-5 leaves, the shoots are set. Two shoots near the base are selected for cultivation, and the remaining shoots are removed, and the shoots are called spurs.
2, topping
As the new shoot grows upwards, a secondary shoot will grow between each leaf. When the secondary shoot grows 2-3 leaves, it will be picked up. When the new shoot grows to 13-15 leaves, it will be picked up and the picking heart will grow again. Tip, leave 3-4 leaves topping, and repeat until the leaves do not fall long.
3, branches and branches
When new shoots are grown to 30 cm in their new year, they must be tied in time to prevent wind breaks. Use a rope, a stable or a straw to bind the vines, but leave room for bold growth. When tying the vines, they must also remove tendrils to prevent cross-winding and waste of nutrients.
4, winter shear
After 2 weeks of defoliation, pruning is carried out before burying in the cold, and pruning during the wounding period is prohibited. Before pruning, the result should first be separated from the preparatory branch, resulting in the position of the branch should be higher than the position of the preparatory branch, so as to achieve the purpose of dwarfing the tree. When pruning, leave the new tip on the top of the tree 0.5-1 meters long, cut off all the auxiliary tips, leaving the part called the resulting mother branch; after leaving 2-3 buds on the top of the new shoot, the rest Cut it off and leave part of it called the ready branch.
5, the spike tip
In the spring of the second year, flower buds are most likely to form at the 5-9 buds of the resulting mother bud, and 1-4 buds at the lower end rarely form flower buds. Even if flower buds are formed, flower spikes should be removed, and also on the preparation branches. Spikelets are not allowed. Once found, they are removed and only two new shoots are left. The pruning of these two new shoots is the same as that of the two new shoots of the first year. Results Results on the parent shoot 5 days prior to the formation of flower spikes, shoots were picked at 7-8 leaves above the panicle.
Repeat the above method in the coming year so that the purpose of dwarfing and pruning the tree can be achieved.
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