Yam storage and transportation method:

Because it contains a lot of mucus and starch, if it is damp, it will become soft and sticky. It will be mildewed in about two weeks, the skin color will turn yellow, and it is most prone to insects. Therefore, moisture should be prevented from invading during storage.

The specific method is as follows: it should be packed in wooden box, the box is covered with kraft paper, the box corner is lined with shavings or wood wool, and then the yam is arranged neatly, the same paper is covered, the nail box is sealed, and it is placed in a ventilated, cool and dry place. The storage area should be slightly elevated, stacked off the wall to facilitate ventilation and ventilation; before the rainy season, it should be unpacked and exposed, and pre-smoked with sulfur once, and then smoked once in the summer. This can be safe for summer; late spring At the beginning of autumn, check it once a week. If you notice mild mildew, spread it in the sun, remove the mildew with a brush, gauze or trowel, then mix it with yam powder and dry it (if the sun is too strong) You can cover the thin paper on the yam to avoid sun yellowing.

Yam potato tubers are cold-tolerant and can be stored on site if necessary, delayed until the middle of March of the following year. It can also be stored in earthen kiln, and the yam and yam are stored in layers, and finally the soil is ridged, and the straw is covered to prevent rainwater from invading. Keep 10 ° C ~ 15 ° C in the crucible, and store it until April to May of the following year. The yam tuber is less resistant to low temperature during the dormant period and does not exhibit freezing damage below -4 °C. A suitable storage temperature is from 0 ° C to 2 ° C and a relative humidity of about 90%. Commonly used storage methods are as follows:

1. Trench method: Dig a trench 1~2m deep and 1m wide. The excavated yam is immediately discharged into the ditch. One layer of yam is not more than 80cm, and the top is covered with a layer of fine soil. As the temperature drops, cover the soil, the thickness of the frozen soil layer is 5-10 cm from the top of the yam, and it can be stored until March to April of the next year.

2. Buried method: also known as the sand Tibetan method. In the warehouse or indoor concrete slab, bricks are used to build a buried pit about 1 meter high. Place 10 cm of clean fine sand or fine soil on the bottom of the pit. The selected yam is placed flat on the sand in order, and a layer of yam is fine sand. When it is piled up to about 10 cm from the pit, it is sealed with fine mud or yellow sand. Check every Other month. Yam can also be buried in sand in baskets and boxes.

3. Basket method: pad the sun-sterilized straw or wheat straw around the sterilized basket or box. Then pile the selected yam layer by layer to eight full, covered with wheat straw. Finally, they are stacked in the warehouse to keep the temperature inside the warehouse. To prevent moisture on the floor, you can put bricks or planks on the bottom of the basket.

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