First, the hollow cold method. After harvesting grapes in winter, tie the vines together, dig a cold-proof ditch with a depth of 50 cm and a width of 50 cm along the planting line, and place the vines along the ditch; Build a shed with wooden sticks, cover it with grass or crop straw, and cover it with 30 to 50 cm thick soil. When digging the soil, leave a planting ditch of 50 to 80 cm to prevent digging out the root system.

Second, the burial method. After the grapes are cut in winter, dig a ditch in the right direction with a depth of 30 to 40 cm. Put branches and vines in the ditch and bury them tightly with soil. The burying method should be used early to prevent cold, the ditch should be deep, the soil should be wide, the covering soil should be thick and the burying soil should be strict. After covering the soil, it should be checked frequently to block the soil cracks in time to prevent ventilation from affecting the safe wintering of grapes. No matter what kind of cold protection method is used, frozen water should be poured before cold protection to meet the water demand of grapes in winter.