Answer: Firstly, root cultivation should be carried out: the roots of the grapevine should be cultivated at a height of 25 to 30 cm to protect the rhizomes. Secondly, the trunk must be wrapped: the trunk of the vine should be made of breathable material to protect against cold. Materials such as straw and corn stalk can be used. Do not use dry materials such as plastic paper for wrapping. Winter irrigation is needed again to increase soil heat capacity: timely watering 3 to 4 days before cooling according to soil moisture can reduce frost damage; sweep snow volume of trees in time after snowfall to prevent buds from freezing. Finally, the tree body and the shelf surface can be sprayed with drugs such as brassin and oligosaccharide to improve the tree body resistance.
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