What are the differences between civil cold storage and prefabricated cold storage?

　　Construction period: Prefabricated cold storage has a short construction period and is suitable for rapid deployment; civil cold storage has a long construction period and requires more time and preparation.

　　Cost: Prefabricated cold storage has a lower initial investment, while civil cold storage has a higher initial investment, but the long-term maintenance cost is lower.

　　Flexibility of use: Prefabricated cold storage is more flexible and can be adjusted as needed; once civil cold storage is built, it is more difficult to adjust.

　　Scope of application: Civil cold storage is more suitable for large, long-term, fixed-location cold storage projects; prefabricated cold storage is more suitable for small and medium-sized, temporary or projects that need to be deployed quickly.

　　In general, there is no “good” or “bad”. The choice of which cold storage needs to be considered comprehensively based on the specific needs, budget, location and use cycle of the project.

　　How can the storage temperature of Chinese cabbage in the cold storage be stored for a long time?

　　The storage temperature of Chinese cabbage in the cold storage should be controlled between 0 and 1 degrees Celsius, which is the appropriate temperature range. This temperature can not only prevent the Chinese cabbage from freezing, but also effectively slow down its respiration and prolong its shelf life.

　　The following are methods for long-term storage of Chinese cabbage:

　　1. Control the temperature of the cold storage: Set the temperature of the cold storage to the most suitable temperature for storing Chinese cabbage, and keep it at 0 to 1 degrees Celsius, which can effectively prolong the storage time of Chinese cabbage.

　　2. Adjust the humidity: The relative humidity in the cold storage should be maintained between 85% and 95% to prevent the Chinese cabbage from losing too much water.

　　3. Pretreatment: Before storage, remove the yellow rotten leaves and withered parts of the Chinese cabbage, wash the cabbage, and ensure that the cabbage is dry.

　　4. Basket storage: Use wicker baskets or crates to load the Chinese cabbage and stack them in layers in the cold storage. When stacking, follow the air supply direction of the cold storage and leave a certain gap for cold air circulation.

　　5. Covering protection: Cover the baskets and the top with a layer of plastic film to reduce water loss.

　　6. Storage in stages and batches: The amount of Chinese cabbage entering the cold storage every day should not exceed 1/5 of the total storage capacity to avoid a short-term increase in storage temperature.

　　7. Regular inspection: Regularly check the temperature and humidity in the cold storage to ensure stable environmental conditions. Turn over the vegetables and change the storage layers of the vegetables about every 15 to 20 days to prevent excessive water loss of the upper cabbage.

　　8. Prevent ethylene accumulation: Avoid the phenomenon of Chinese cabbage falling off due to excessive ethylene content. Be careful to handle it with care to reduce mechanical damage.

　　9. Control pests and diseases: Before storage, determine the type and time of spraying according to the length of the pesticide residue period to prevent the invasion of pests and diseases.