Answer: Pour antifreeze water once before wintering to increase soil water content in winter to avoid root damage and dry branches caused by winter drought. Grafted branches are short-lived and cannot withstand the severe cold. Human protection is also required. The first is to prevent the cold by burying the soil. The second is the method of applying medicine. During the high temperature period in winter, apply petroleum jelly or seal oil to the branches to prevent water loss. The third is the method of wrapping plastic film. In early December, the grafts were wrapped with plastic film, and then wrapped with old newspapers to protect against cold.
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