Winter storage of carrots should be selected well-developed, moderate maturity, moisture content, bright color, tight meat, thin pith is better. Immediately after harvest, leaf clusters and stem disks are removed and stored for a period of time, either pre-stored or directly in storage. The specific winter storage method can be divided into the following two types, namely the trench storage method and the cellar storage method. The ditch storage method first selects the ditch where the terrain is high, the groundwater level is low, and the water holding capacity is strong. Gutter width is generally 1 - 1.5 meters is appropriate, 1.2-1.6 meters deep (should be more than the local permafrost), east-west is better, the length of the reserve may be. The dug up the top soil pile to the south side of the ditch to prepare for shade. The lower layer of soil piles to the north side of the ditch as cover soil. Carrot into the ditch is generally in late October or early November, choose sunny weather. The carrots can be tilted downwards in the trenches, or they can be placed in a ditch. In order to maintain proper moisture, the cover soil moisture content should reach 18-20%. This method can generally be stored until March and April of the following year. The method of pit storage is also commonly used by people. First select a crypt of 1.5 to 1.7 meters in depth from the leeward to the sunny place. The length and width of the pit can be determined according to the reserve. After the cellar is dug, it is allowed to air for 2-3 days. Then the selected carrot is squared or rounded in the pit. At the time of palletizing, still coat each layer of carrot with a layer of soil. After palletizing, cover the cellar with wooden poles or straw and leave a 70- to 100-cm square window. In the early days of entering the cellar, the temperatures inside and outside the cellar were relatively high, and the window should be opened day and night to prevent the carrots from rot and rot. In the middle of storage, the temperature is low. The window should be covered tightly and kept warm. However, proper ventilation should be selected at noon on sunny days. During the later period of storage, the temperature began to rise. During the day, the cellar should be closed. Ventilation should be conducted at night to maintain the low temperature conditions in the cellar. This method can generally be stored until April of the following year. Not only ensure the long-term consumption needs, but also increase the economic benefits.
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