"This is our newly developed golden sweet potato. Yellow skin and red meat, sweet and delicious, not big. Suitable for steaming or boiling. " Jia Shucheng's face is full of pride when he mentions the new sweet potato variety that has just been cultivated. At the "Double Creation" Achievement Exhibition, his entrepreneurial story of planting sweet potatoes attracted much attention.

Jia Shuancheng is the chairman of Nong Xin Sweet Potato Planting Professional Cooperative in Xinle City, and is known as the "sweet potato king". Since 1996 became attached to sweet potato, he has spent more than 20 years, from sweet potato planting to seedling raising, hybrid breeding, research and development and popularization of new technologies, and made small sweet potato a great cause.

1995, Jia Shuancheng, who failed in the college entrance examination, did odd jobs in the city, and he began to think about how to live a better life. At that time, there were dozens of acres of sandy wasteland at home, and Jia Shuancheng pondered the use of existing resources to start a business. 1996, Jia Shuancheng heard about a new sweet potato variety on the radio, and its yield was two or three times that of ordinary varieties. This made Jia Shucheng very excited. He planted two acres of new sweet potato varieties with the mentality of trying.

At that time, ordinary sweet potato seedlings were each 1 minute, while this new variety was each 20 minutes. For the sweet potato seedlings bought by these flowers, Jia Shucheng did not dare to slack off and took good care of them every day. These new sweet potato varieties were listed in the wrong season in advance, and the price per kilogram was twice that of ordinary sweet potatoes that were listed in large quantities later. The first venture tasted the sweetness, and Jia Shucheng's confidence in planting sweet potatoes was more firm.

With the improvement of people's living standards, people pay more attention to the quality of sweet potatoes. How to grow sweet potatoes with market competitiveness? Jia Shuancheng visited Jiangsu Xuzhou Sweet Potato Research Center, Shandong Academy of Agricultural Sciences, Hebei Academy of Agricultural Sciences and other units to introduce and cultivate new varieties. Over the past 20 years, he has cultivated a number of new agricultural series sweet potato varieties, successfully introduced dozens of high-yield and high-quality varieties such as Pu Shu 32, Sushu 16 and Ji Shu 25, and built the most complete and largest sweet potato seedling base in China, providing more than 50 million high-quality sweet potato seedlings to potato farmers every year.

Improved varieties need good methods to cooperate. Jia Shuancheng bought 100 sets of scientific and technological books about sweet potato cultivation, studied and studied, mastered the technology of sweet potato from seedling raising, cultivation to harvest and storage, and developed the storage technology of sweet potato in large pits, which effectively solved the problem of sweet potato storage rot and deterioration. His original high-yield cultivation technology of dry sweet potato effectively solved the problems of difficult survival and low yield of cultivated sweet potato in arid areas, reduced production costs and increased farmers' income.