Onions are widely distributed in China, and they are grown in most areas of China. They are one of the foods that people eat daily. Onions also have high medicinal value, which can promote digestion, refreshing, and prevent cancer. Onions can be used at room temperature. It can be stored for about three months, but if it is stored in a cold storage, it can be stored for at least about 8 months, which can not only improve the preservation time of onions, but also effectively guarantee the quality of onions. Onion cold storage is one of the most important onion preservation equipment in my country.
Precautions for onion cold storage:
1. Onion cold storage is to extend the dormancy time of onions through low-temperature storage. The most suitable storage temperature for onions is minus -2 degrees Celsius. Onions cannot be directly stored due to the high temperature before storage. It is necessary to reduce the temperature of onions to a certain level before entering the warehouse, and the amount of each entry can not be too large, preferably about 10% of the inventory.
2. Onion cold storage should pay attention to wrap the onion with a layer of plastic wrap before entering the warehouse to ensure the quality of the onion after storage. When placing the onion inside the cold storage, pay attention to the ventilation of the onion to avoid rotten fruit caused by the onion in a certain area. If the rotten fruit is found, it should be cleared in time to avoid affecting other good onions.
3. Stop watering the onion about ten days before harvesting, so as to better improve the storage period of onions. Before entering the onion cold storage, the inside of the cold storage must be thoroughly disinfected to ensure the safety of the stored onions.
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