How to store sweet potatoes Storage skills of sweet potatoes

Storing sweet potatoes well is an effective way to increase the output value of sweet potatoes and farmers' income. The key measures for storing sweet potatoes are:

First, choose sweet potatoes with good quality to enter the cellar.

The storage quality of sweet potato has a great relationship with the quality of sweet potato in cellar. Before entering the cellar, the sweet potatoes should be screened to eliminate the diseased and scarred sweet potatoes, because these sweet potatoes carry germs or are easily infected by germs, which is easy to cause rotten pits in the cellar.

Second, choose the appropriate storage mode.

There are two storage methods of sweet potato, high temperature storage and low temperature storage. The high-temperature storage method is to heat the sweet potato to 35-38℃ after entering the cellar and keep it for 2-3 days to kill the black spot and soft rot of sweet potato. Then cool to 10- 14℃ for storage. This method works well, but it is expensive and troublesome to operate. For most farmers, low-temperature storage is more suitable. The method is: disinfect the sweet potato one week before entering the cellar. Scrape off the old soil in the cellar with a shovel, and then disinfect the cellar with 70% thiophanate 1000 times solution or 50% carbendazim 800 times solution. And then at

After the sweet potato is harvested, it is soaked in 70% thiophanate 1: 1 or 50% carbendazim 800-fold, and then it is taken out and dripped into the cellar. Finally, after the sweet potato enters the cellar, the temperature in the cellar is kept at 10- 15℃. The temperature in the cellar is lower than 15℃, which can inhibit the activity of bacteria, and higher than 10℃, which can avoid freezing injury and achieve the purpose of safe storage.

Third, strengthen the pit management of sweet potato during storage.

Sweet potato can be divided into three management periods: before winter, after wintering and after beginning of spring. Before winter, the temperature in the cellar is high and the humidity is high, and the key point is to cool down and discharge the humidity. The method is to put the sweet potato into the bamboo tube in time after entering the cellar to facilitate ventilation, cooling and dehumidification; Second, the cellar temperature is higher than 15℃, should be opened in time.

The sweet potato pit is cooled and dehumidified. When the temperature drops below 10℃ or 10℃, the pit mouth should be covered with heat preservation materials in time to keep the temperature in the pit between 10- 14℃. During overwintering, the main work is to do everything possible to keep the temperature in the cellar above 10℃. Check the temperature of the sweet potato pit every few days. If the temperature is found to be lower than 10℃, the straw should be covered in time. After beginning of spring, the temperature is often hot and cold.

The management of sweet potato pits is mainly to strengthen inspection, adjust the temperature in sweet potato pits to 10 ~ 15℃, and replenish water appropriately to prevent sweet potato chaff.