Miyi yams are well-known specialties of Miyi County, Panzhihua City, Sichuan Province. Miyi yams have white and glutinous flesh rich in nutrition, so they have high value for food or medical purposes, thus enjoying a good reputation nationwide. Miyi yams are protected by the national geographical indication of agricultural products.
Miyi County is richly endowed by nature in terms of natural environment. With abundant sunlight and rainfall, and climate warm in winter and cool in summer, it is a natural ‘greenhouse’ and a rarely seen low-latitude and high-altitude tropical crops plating zone in China, as a result, its vegetables feature ‘early-maturing, high per unit area yield, high quality, and high profit’.
Miyi yams have white and glutinous flesh rich in nutrition, so they have high value for food or medical purposes, thus enjoying a good reputation nationwide.
Miyi yams have a long history. Since the 1960’s, the county has continued to select good varieties from wild yams or new species introduced, and plant them on a trial basis. As the county gradually expands the planting area, in 2012, the plantations cover an area of over 10,000 mu, with an income of 13,000-15,000 yuan per mu on average. As a result, Miyi yams have become the county's main vegetables for the farmers to increase income and acquire wealth.
In 2013, ‘Miyi yams’ applied by the Station for Popularizing Agricultural Technique of Miyi County passed the examination and expert review of the Ministry of Agricultural Products Quality and Safety Center, and was officially protected by the national geographical indication of agricultural products.
The planting areas of Miyi yams protected as places of origin in Miyi County through the national geographical indication are 12 towns (or townships) or 88 villages, including Deshi Town, Yakou Town, Binggu Town, Salian Town, Panlian Town, Xinshan Township, Baima Town, Caochang Township, the Wanqiu Yi Township, Puwei Town, Malong Township, and Baipo Township. The geographical coordinates are east longitude 101°44′00″～102°15′00″ and north latitude 26 ° 40'00 "~ 27 ° 10'00".