Wanzhi Sweet Potatoes

Wanzhi Sweet Potatoes

Wanzhi Sweet Potatoes are a geographically indicated agricultural product.

　　Wuhu City has a long history of growing sweet potatoes, and Wanzhi Town in Wuhu County is one of the major planting and production areas. Thanks to its unique geographical conditions and cultivation methods, "Wanzhi Sweet Potatoes" have developed distinctive qualities — they have low water content, floury and sweet flesh that is delicious, low coarse fiber, and are rich in dietary fiber and minerals. They are highly favored by consumers in cities such as Nanjing, Tianjin, and Shanghai, and have long been praised as having a color “like white jade,” a sweetness “like honey,” an aroma “like osmanthus,” and a taste “like millet.” The application area for "Wanzhi Sweet Potatoes" covers 26 administrative villages in Wanzhi Town, including Lucun and Putang, with a protected regional area of 17,948 hectares and a total annual output of approximately 403,800 tons.

　　Protected Area:

　　Within Wanzhi Town, Wuhu County, including 26 administrative villages: Lucun, Putang, Yangcun, Xiaohan, Baoshan, Lixin, Baihua, Xinlian, Fenghe, Chengnan, Yonghong, Qitang, Xinwei, Shidu, Luobao, Panlong, Laocun, Shiba, Xinzhu, Changgang, Songxin, Shuangma, Shuangqiao, Xinfeng, Changshan, and Jiaocun. The geographical coordinates are between 118°32′21″ to 118°40′11″ east longitude and 31°8′17″ to 31°11′24″ north latitude.

　　Regional Scope

　　The protected area for Wanzhi Sweet Potatoes is within Wanzhi Town, Wuhu County. It stretches from Xinfeng Village in the east to Xinwei Village in the west, from Baihua Village in the south to Changgang Village in the north, covering 26 administrative villages: Lucun, Putang, Yangcun, Xiaohan, Baoshan, Lixin, Baihua, Xinlian, Fenghe, Chengnan, Yonghong, Qitang, Xinwei, Shidu, Luobao, Panlong, Laocun, Shiba, Xinzhu, Changgang, Songxin, Shuangma, Shuangqiao, Xinfeng, Changshan, and Jiaocun. The geographical coordinates are between 118°32′21″ to 118°40′11″ east longitude and 31°8′17″ to 31°11′24″ north latitude. The protected regional area is 17,948 hectares, with a total output of 403,800 tons.

　　Product Quality Characteristics

　　(1) External Sensory Features: Taking Shengli Baihao as an example, the shape is spindle-shaped or long spindle-shaped, the skin color is light red, the skin is intact, glossy, clean, and the size varies by variety, generally between 0.2 kg and 0.5 kg. (2) Internal Quality Indicators: The flesh of Wanzhi Sweet Potatoes is white, floury, sweet, and delicious, with low coarse fiber, earning the praise of being “color like white jade, sweetness like honey, aroma like osmanthus, taste like millet.” It is rich in nutrients essential to the human body. Per 100g of fresh tuber: moisture <72g, protein >1.4g, fat ≤0.2g, carbohydrates >24g, dietary fiber >2g, calcium >24mg, iron >0.8mg. (3) Safety Regulations: Comply with the "Wuhu County Wanzhi Town Pollution-Free Sweet Potato Cultivation Technical Regulations." Pesticide Use Guidelines: Follow GB4285–84 Pesticide Safety Use Standards and GB/T8321 Pesticide Rational Use Guidelines. Seed Tuber Quality: Compliant with GB4406 standards. Product Standards: Follow NY 5304 Pollution-Free Food Potato Standards. Production Environment: Meets NY5010 Environmental Conditions for Pollution-Free Vegetable Production Areas and NY/T5295 Evaluation Criteria for Pollution-Free Food Production Environments. Fertilizer Use Guidelines: In line with NY/T496 General Principles for Rational Use of Fertilizers.