Choose a suitable cellar site, cellar type 1, pit site: selected in the leeward sunny, high dry terrain, low groundwater level, solid soil and management, convenient transportation of the cellar. 2. Cellar type: According to the local soil, topography and groundwater level, select the appropriate cellar type. Large cellars are used in the coastal and plain areas where the groundwater table is high, and voucher cellars are used in the hilly areas; the groundwater level is high, and shallow trenches are used where the soil is loose. Second, timely access to the cellar 1, disinfection: sweet potatoes before entering the pit, the storage cellar scraped the old soil, with lime water painted walls or sulfur fumigation. The bottom of the pit is filled with clean sand with a thickness of 10 cm. The cellar is surrounded with wheat straw or cereal straw to prevent moisture and heat insulation. 2, into the pit: to enter the pit with the harvest, if not in time into the pit, to pile up into a pile and use fireweed or potato vines covered to prevent cold damage, before entering the pit to be selected, completely remove sick potatoes, frozen potatoes, insects Damaged potatoes, moldy potatoes, and wounded potato pieces prevent disease from spreading in the cellar and cause a "rotten pit." When entering the cellar, please handle it gently and try not to injure the potato skin. The storage volume usually accounts for 2/3 of the cellar space. Third, the storage management 1, storage early: into the cellar for storage within 20 days of the initial period, this period mainly to cool the ventilation and cooling wet, should open the doors and windows, pits and gas eyes, ventilation, humidity, cooling, so that the cellar temperature is basically stable in 14 °C - 15 °C. 2, the storage of the middle period: 20 days after entering the pit to the following year in early February for the storage period, this period to the main insulation and cold, strengthen the moisturizing measures, the cellar temperature controlled between 12 °C - 14 °C. 3, late storage: from the beginning of spring to the storage for the late storage period, this period to stabilize the cellar temperature, the main ventilation and ventilation. While maintaining the cellar temperature, the cellar humidity is maintained between 85% and 90%. China Agricultural Network Editor
