When the grape buds grow to a height of 20 cm, the plant spacing is 50 cm. According to the principle of leaving no, staying strong and not weak, leave a strong bud as the trunk; the planting distance of 100 cm will leave both buds as the trunk. If a double bud appears on the same node as the bud, the weak bud is erased. When the seedling grows to a height of 40 cm, the soil is removed by removing the pile of soil, and the heart is fixed and the main shoot is formed. According to the planting density, the number of main vines is determined. The plant has a distance of 50 cm and two sub-tips are used as the main vines. If the plant is 100 cm away, the four sub-tips are reserved for the main vine. If less than 4 main vines are reached, one of the main vines can be topped. Promote the secondary secondary shoots to form 4 main vines. When the main vine grows to 100 cm, the heart is picked, and the secondary shoot that grows later, except for the top end of the extended tip, leaves 3-5 leaves to pick the heart, and the rest leaves only one leaf to be topped, so it is repeated until it is no longer issued. So far. The main vine is tied to the wire in time. If it is not built in the same year, it can be temporarily supported by bamboo rafts. Grape tendrils consume a lot of nutrients and are cut off at any time after discovery.
Grapes like water and fertilizer, after planting, if the soil water content does not meet the demand, it should be timely watered. Throughout the growing season, it can be topdressed and watered 4 times. Generally, 30-50 grams of urea per plant is applied in June. In July, 50-80 grams of potassium sulfate compound fertilizer is applied per plant, and 80-100 grams of compound fertilizer is applied at the end of August. Dig a hole 10 cm or more deep at 30 cm from the root, cover the soil after fertilization and pour enough water. Apply organic fertilizer to the frozen water before freezing.
Winter pruning is carried out half a month before icing, and each main vine chooses 4-5 full buds, and the upper part is completely cut off. Areas below -12 °C should be buried and protected from cold, and the thickness of buried soil is 30 cm.
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