A tree that has grown into shape, that is, the main stem has a thickness of more than 1.5 cm, and the main vines on both sides have grown to 80-90 cm. There are 8 trees with secondary secondary shoots and a diameter of 0.6 cm or more on it. Each tree leaves 6 to 8 fruiting female vines, according to the fullness of the winter buds, leave 3 to 5 buds for pruning, and cut off the remaining secondary shoots.
The main vines on both sides have grown to 80-90 cm, the top diameter is more than 0.6 cm, and there are 8 trees whose secondary secondary shoots are less than 0.6 cm in diameter. When pruning, cut off the secondary shoots of the main vine and leave the main vines on both sides. .
Trees whose main vines on both sides do not grow to 80-90 cm or 80-90 cm and the top diameter does not reach 0.6 cm thick should be cut off from 0.6 cm when pruning, and the other secondary shoots shall be cut off.
Pruning of mature grape plants
Varieties with well-differentiated flower buds, such as Ruby Seedless, Hutai No. 8, Victoria, etc., from both sides of the branch of the main stem, the female vines are pruned with 2 to 3 buds at a distance of about 30 cm, and 12 female vines are left for each tree. .
For varieties with medium flower bud differentiation, such as Red Globe, Xiahei, etc., from both sides of the main branch, leave 8-10 vine branches with a diameter of 0.8 cm or more, good maturity and full bud eyes, and 8-10 buds for pruning. And you can leave 2 to 4 weak vines on both sides of the main trunk bifurcation, and leave 2 to 3 short shoots to cultivate newer vines.
For varieties with poor flower bud differentiation, such as Meirenzhi, 12-16 vine branches with a diameter of 0.8 cm or more, good maturity and full bud eyes are left on both sides of the main trunk branch, and 10-12 buds are reserved for pruning. Leave 2 to 4 weak vines on both sides of the main trunk bifurcation and 2 to 3 short shoots to cultivate new vines.
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