1. Pay attention to the receipt and transportation. Summer potatoes are generally suitable for harvesting before the frost falls. It should be lightly collected, lightly transported, and lightly handled; it is protected against bruises, rain, and frost.
2. Carefully selected and promptly entered. The sweet potatoes used for storage should be carefully selected, and the wounds, frozen, sick, and green potatoes should be strictly selected. On the same day, the sweet potato collected on the same day will be put into the sputum, and the sputum should be dried for about 3 hours to reduce the water content of the sweet potato. Generally do not store overnight potatoes. It is best to take the medicine under the sputum, that is, the sweet potato is treated with the drug and then squatted. The method is to hold the new high-fat film 500 times in the large tank or the cement pool, and the selected sweet potato is placed in the basket and immersed in the above liquid 5 -- Lift it 10 minutes later, drain the potion and squat.
3. The potato kiln should be thoroughly disinfected. The sweet potato should be disinfected one day before the sweet potato is collected. First clean the yam and remove debris and old soil. After cleaning, sprinkle with lime or spray the wall with lime water.
4. Stack properly. The yam cannot be overfilled, and the sweet potato can not exceed 2/3 of the yam volume. Because the yam is too full, it will affect the ventilation and ventilation of the sweet potato during storage, resulting in high temperature, sweet potato lack of oxygen, long-term anaerobic respiration will produce a lot of alcohol, causing sweet potato poisoning and decay.
5. Strengthen management. At the beginning of storage, the sweet potato is mainly ventilated and cooled, and the drainage is mainly cooled. The storage temperature is 10 °C--13 °C. The suitable relative humidity is about 85%. If the relative humidity is insufficient, some water can be splashed in the bowl. In the middle of storage, the main purpose is to keep warm and cold, and the mouth should be tightly sealed to avoid cold wind and snow water intrusion.
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