1, cellar. The cellar is a very convenient way to store sweet potatoes. Because the storage temperature of sweet potato is about 65438 05℃, chilling injury and freezing injury will occur when the temperature is too low, which will reduce the quality and activity of sweet potato. But if the temperature is too high, bacteria can easily reproduce and rot. After the sweet potato is harvested, it is dried for 4 days. Spread about 10 cm of dry and cool sand on the bottom of the cellar. Put the sweet potato into the cellar, fill 7 floors, and leave ventilation space.

2, carton preservation. If there is no cellar at home, you can put sweet potatoes on a sealed balcony. Find a wooden box or carton, put some boards in the corner, and then put the wooden box or carton on it. The bottom of the box is covered with some dry straw. Put the sweet potato in it. If the temperature is lower than 15℃, put something on it to keep warm. When the weather is fine, the temperature is high, and the sun is shining, open the box for ventilation. It can be preserved for a long time.

3. Keep fresh in the fresh-keeping warehouse. The most scientific way to keep fresh is to keep it in a fresh-keeping warehouse. The fresh-keeping warehouse can manually control the humidity and temperature of the environment. Therefore, if there are a large number of sweet potatoes, a fresh-keeping warehouse can be established to keep the temperature at 12 to 14 degrees Celsius and the humidity at about 90%, which is the most suitable temperature for storing sweet potatoes.

4, slice dry preservation. If the amount of sweet potato is not large, it can be steamed or stuffy, then cut into pieces, cooled slightly and dried. Dry sweet potato has low water content and can be stored for a long time. Just pay attention to sealing and keep away from bugs.