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Grape winter cold protection method
In places where the minimum temperature of the average temperature does not exceed -15°C in each year, the wintering of the grapes does not have to be cold-proof. Therefore, in winter in the southern part of the country, it is entirely possible to expose the ground to winter. In the north of the Yellow River, it gradually shifts to the north. The minimum temperature in the winter is getting lower and lower, and the cultivated grapes must be kept cold. Cold protection is generally performed before the soil is frozen in December. There are two ways to prevent cold. Hollow cold protection method is used in colder northern regions. For grapes more than two years old, the vines are cut at 1.5 meters, bundled together, and then ditched along the cultivation line, each with a width of 50 centimeters, and the branches and vines are buried under the slashes. Conditionally available wood poles can be used for sheds. Cover grass or other straw, cover the soil 30-50 cm above. When setting off, keep 50 cm away from the planting ditch to prevent root excavation. The method of burying the cold has been adopted in relatively warm places. After the grapevine is cut, antegrade the ditch to a depth of 30-40 cm, then fill the vines into the ditch and bury it with soil. Remember: Grapes need to be kept cold, dig deep, wide and thick. To prevent taking the soil too close to the roots, covering the branches, revealing the root groups and neglecting each other. When the soil is buried, the soil must be dry, the blocks must be fine, and the land must be buried firmly. Regardless of the method of cold protection, it must be poured once before the cold to ensure that the winter grape water requirements. When digging trenches, dig the trench one day in advance and dry it. Then cover the branches with vines to prevent overgrowth of the soil. It should also be noted that in the winter, when inspections are repeated, cracks in the soil must be promptly filled with dry earth to prevent wind penetration. In the spring of the following year, it will be unearthed before and after the rain.