Grapevine shoots and bud eyes are more resistant to cold: when the root system is at -4°C, it is slightly frost-damaged, and it can be frozen at -5°C to -7°C. Before and after the winter solstice, the grape after the fall cut should be placed in the ditch, covered with a straw bag at night, and opened during the day. This period of time before freezing is a period of dormancy. It is necessary to timely spray the trees to prevent the cold.
Use sand buried or buried in soil to prevent cold: First, cut the grape branches of winter cut along the ditch, cover it with sand or soil and cover it by 20 cm or 30 cm. Then, when the soil is frozen at 10 cm, cover it with leaves and fireweed and cover it by 50 cm. 1 meter. At the same time buried a few straw, exposed at the top, air and light effect.
Hollow cold-proof: In the ditch with bricks and adobe to form a trough, the winter cut after the branches are bundled in the middle, the top with a wooden pole scaffolding, put on straw and straw bags, cover 20 cm to 30 cm, and then Cover leaves or firewood 50 centimeters, along the ground to leave a few vents, at any time temperature ventilation. Closed at 0°C, open when next year is clear.
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