The use of old methods to store sweet potatoes is often "dry" and "water bad". To this end, the author concludes that the following two simple imitation of ecological natural temperature storage method, after several years of promotion, the effect is better than the "Dawujiao." On the occasion of sweet potato harvesting, it is recommended to farmers. (1) Disinfection of potato chips 1. Prepare a high-concentration disinfectant solution with 70% thiophanate-methyl or 50% carbendazim 500 times. For every 1,000 kilograms of sweet potatoes stored, 20 kilograms of liquid medicine must be prepared. 2. The potato block was disinfected with bamboo, wood, brick, etc. to take a bed frame with a slope, and the width was slightly larger than that of a basket of yam and 1-3 meters long. The bed cushion is covered with a plastic film without holes, forming a shallow groove with a low middle and high sides. The prepared medicinal solution is packed in a large-mouthed container and placed under the lower end of the bed frame so as to be able to follow the liquid medicine flowing down the bed frame. In the sunny days, dig ripe potato pieces, separate the size, good and bad, dig the potatoes on the day and transport it to the bedstead with a drain basket and other drain equipment. Drip the liquid and repeatedly rinse the tubers, and ask for thorough penetration and dripping. Repeated showering of the liquid under the bed frame. Drain the liquid to store it (you can also dip it directly into the liquid to remove it, but it will take more medicine.). Points: The harvested sweet potato should stay overnight and should be dug and sterilized so that the surface of the potato block can completely penetrate the liquid to ensure thorough sterilization. (B) Storage method First method: Prepare a plastic film with no holes depending on the storage capacity, select a well-drained, leeward, high-drying place, dig a shallow pit with a depth of 50-70 cm, and the length and width are less than Prepared film. Use the above sweet potato disinfectant to spray around the pit, and then put the well-sterilized sweet potato into the pit and make it thicker, 30-50 cm thick, slightly into a head shape, and evenly spread a layer of 5-10 cm thick on the potato block. Straw, covered with straw prepared film, and finally dig pitted soil back to the film, slightly higher than the ground, also slightly Jiantou. Pay attention to light soil, do not break the film. Soil can be planted with grass and other crops. The storage period does not require special management and will be taken out for seeding or other uses in the coming year. This method should not be stored and damaged potatoes. Second method: Select a corner or a house (depending on the storage capacity) of a leeward sunny house, clean it, sprinkle a layer of quicklime or spray wet with the sweet potato disinfectant mentioned above, and then disinfect and drain the liquid. The tubers are piled into piles (size, good, and separate to facilitate later use). With the digging and disinfection along with the pile, after the end of the excavation, a layer of fresh dry grass ash is removed on the potato block. At high temperatures (5-10°C), potato chips can be seen. When the temperature is low (0-5°C), the thickness of the charcoal in the grass is increased, and in the winter (below 0°C), the thickness of the grass ash can be increased or a layer of straw insulation can be added. This method uses grass and wood ash to breathe heat to sterilize and prevent rats, and can be accessed at any time. It is very convenient. If the rodent is seriously damaged during storage, do not move the bitten tuber. The rodent drug can be withdrawn from the freshly gnawed portion of the tuber. After a few days, the tuber should be picked out and properly handled.