Winter fruit trees are cold, mostly covered with grass or snow piles. However, winter is also a difficult time for mice to find food. Fruit trees are extremely vulnerable to rats and difficult to find. Rats usually bite the bark of the rhizomes. The bites are ring-shaped and the width is about 2 cm to 3 cm. After the damage to the trunk, the cortical tissue is cut off. If no measures are taken, the snow erosion and pathogen infection will occur. Parasitism can easily lead to trunk diseases, causing decay inside the branches, resulting in weaker tree vigor and lower yield. Some orchards have been destroyed by rodents. In order to reduce the occurrence of rodent damage in winter, growers should not cover grass within 50 cm around the trunk. When the snow is heavy, it is necessary to clear the snow in a timely manner. It is also possible to put rat poisons around the trees. Protect the natural enemies of rats, such as eagles, owls, cats, foxes and so on.
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