Red grapes must be managed in winter. The technical work of winter cutting, soil burying and winter irrigation is carried out in three steps:
1. Winter cut
Red grapes start to cut in winter after frost, and try to end it around the beginning of winter. The cutting mouth should be cut in the middle and upper part of the upper internode of the full bud to prevent air drying. When pruning, according to the aging degree of the branches, stick to the principle of removing the weak and keeping the strong, and select and leave the fruiting mother branches. Each fruiting mother branch should be pruned with medium and short shoots (remaining 2-4 buds for pruning). Adult trees generally leave 8-10 fruiting mother branches; annual planting seedlings are cut at a stem thickness of 0.8 cm and stem height of 1 meter, and all the lower secondary shoots are cut off; two-year-old trees leave 3-4 fruiting mother branches and extend the head (Main trunk) Leave 6-8 short shoots near the second wire; leave 5-7 fruiting mother branches for three-year-old trees.
2. Buried
Bury the soil in time after cutting in winter. When burying the soil, you should gently shake the branches and slowly press down, and bury them in the dug ditch to take a firm look.
Three, winter irrigation
After the burial of the red grapes is completed, attention should be paid to temperature changes, and water should be irrigated in time when the temperature drops to 0°C. This irrigation must be sufficient to prevent the branches from losing water underground, which will affect the germination and tree growth next year.
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