Seedling raising techniques of sweet potato with fire resistance

"The traditional potato kang, which has been used in rural areas, has high requirements on the structure of the kang, which is particularly troublesome and difficult to manage. Sometimes the temperature will be high when a shovel of coal is added, and the sweet potato will be cooked. Electric potato kang uses electricity instead of fuel to heat potato kang, and the temperature can be controlled. The whole kang can keep the temperature balanced. Raising sweet potatoes is like lying on an electric mattress. The emergence time is 4 to 5 days earlier, and Miao Zhuang is strong, saving labor and trouble. " Fan said that if this year's electric potato kang test is successful, it will be vigorously promoted in the village next year, so that ordinary people can also save energy and protect the environment.