Sweet potatoes are native to the Americas. The first batch of sweet potatoes in Europe was brought back by Columbus in 1492, and then introduced to Africa by the Portuguese, and to Asia by the Pacific Islands. Sweet potatoes were first introduced into China in the Wanli period of the Ming Dynasty, when Chen Zhenlong, an overseas Chinese from Fujian Province, often went to Luzon (now the Philippines) to do business, and found that Luzon produced the highest yield of sweet potatoes, so he patiently learned the cultivation method from local farmers. Later, after the promotion of the Chen family, sweet potatoes were widely planted throughout the country.

Introduction

Sweet potato (scientific name: Ipomoeabatatas (L.) Lam.), also known as sweet storage, sweet potato, Zhu yam, golden yam, Fan Ru, red yam, yam, yam, yam, sweet potato, sweet potato, sweet potato, sweet potato, sweet potato, sweet potato, sweet potato, sweet potatoes, white potatoes, goose, moe sweet potato. Annual herb, underground part with rounded, elliptic or fusiform tuberous roots, stems procumbent or ascending, occasionally twining, multi-branched, leaf blade shape, color often varies according to varieties, usually broadly ovate, petiole length varies, cymes axillary, capsule ovate or oblate, 1-4 seeds, usually 2 seeds, glabrous.

Sweet potato is a high-yield and adaptable food crops, and industrial and agricultural production and people's lives are closely related. In addition to the tuber for staple food, but also food processing, starch and alcohol manufacturing industry is an important raw material, roots, stems, leaves and excellent feed.