Chinese yam.
Fine-haired yam is yellow in color, thin in skin, with reddish-brown mottled moles and white in meat. It has been planted for more than 200 years, and 1985 was rated as a vegetable in Shandong Province.
High-quality vegetable products are included in the book Shandong Famous Agricultural Products.
Jiaxiang slender hairy yam belongs to the local variety of yam and has a long cultivation history. "Yam" was recorded as a "native product" in Jiaxiang County during Guangxu period of Qing Dynasty. Jiaxiang slender Chinese yam was recognized as a popularized variety by Shandong Crop Variety Approval Committee in 1983, and the recognition number was "Lunongshen (83) No.5". 65438-0989 Jiaxiang slender hairy yam, as a high-quality vegetable product in Shandong Province, was listed in the book "Excellent Varieties of Vegetables". In 2008, it passed the green food certification, and applied for the registration of Jiaxiang slender yam geographical indications on 20 12, and passed the evaluation. The underground tuber of Jiaxiang slender hairy yam is rod-shaped, with a length of 80 cm ~ 100 cm, a transverse diameter of 3 cm ~ 5 cm, and a weight of 400 g ~ 600 g per plant. The surface is smooth, the epidermis is yellowish brown or yellowish, and there are reddish-brown spots on the tuber and slender root hairs on the surface. The growth period is 190 days, and the average yield per mu is about 2000 kg. The meat is tender, white as jade, with sand on the surface and sweet fragrance. It has high nutritional value and medicinal value.
territorial scope
The geographical protection scope of Jiaxiang Fine Wool long yam is: Jiaxiang County, Shandong Province, east to Meng Ying Village, Jintun Town; West to Zhangzhuang, Laosengtang Township; South to Songzhuang, Mandong Town; North to Huang Bei Village, Huanggai Township; Administer 8 towns and 7 townships * * * 7 10 administrative villages. The geographical coordinates are11606' ~1629' east, 3511'~ 35 37' north, with a total area of 971.. The protective planting area of fine wool in long yam is 400 hectares, with an annual output of1.2000 tons.
Product quality characteristics
Jiaxiang fine wool has a long history in long yam. According to the records in Jiaxiang County Records and Jiaxiang County Records and Agricultural Records, Jiaxiang Fine Wool long yam has been planted for 300 years. It is one of the famous and special products in Shandong Province, and is known as the best yam. According to legend, Jiaxiang was introduced as early as the Hongwu period of the Ming Dynasty. Kangxi and Qianlong of the Qing Dynasty were very satisfied with the food and listed it as a tribute. 1985 was rated as a high-quality vegetable product in Shandong province and included in the book "Shandong Agricultural Specialty"; In 2000, Jiaxiang County Agricultural Bureau established Jiaxiang Fine Wool long yam R&D Center; In 2003, it was named Jiaxiang Fine Wool long yam by the Ministry of Agriculture; In 2008, "Mingdou" brand fine wool long yam passed the green food certification; Won the gold medal of China Green Food Expo in 2009; 20 10 was designated as the demonstration base of China yam public welfare project. (1) External sensory characteristics: long yam Jiaxiang fine-haired underground succulent tuber, which is characterized by thin yellow-brown epidermis, purplish-brown mottled moles, long cylindrical hairy roots, neat and uniform growth, obvious geotropism, length of 80 cm ~ 100 cm, transverse diameter of 3 cm ~ 5 cm, and single plant weight of 400 g ~ 700 g Yam bean, that is, beaded buds on vines, with yellow-brown skin, turns (2) Internal quality index: Jiaxiang fine hair long yam is as white as jade, with sand in the face and sweet in the fragrance; Starch content ≥ 10%, protein ≥2.2%, calcium 50mg/100g ~ 62mg/100g, zinc 3.8mg/kg ~ 4.5mg/kg, total sugar content ≥2.0%, etc. Its nutritional value and medicinal value are very high. (3) Safety requirements: The quality of Jiaxiang Fine Wool long yam products should comply with the provisions of relevant laws and regulations such as Green Food Potato Vegetable Standard (NY/T 1049-2006), People's Republic of China (PRC) Agricultural Products Quality and Safety Law, and the State Council Special Provisions on Strengthening the Safety Supervision and Management of Food and Other Products.