Xincheng Fine Hair Yam is a famous local specialty in the new town of Huantai County, Shandong Province. It has a long history of cultivation and has enjoyed a good reputation as early as the Ming and Qing Dynasties. Due to its special soil and water growth conditions, it has become a superior product in the Yam family and has become a court tribute. Xincheng Fine Hair Yam has many functions such as spleen, lung, Gushen and Yijing. It integrates dishes, medicines and tonics.

The main features of Xincheng fine-haired yam are: stems, green leaves, ovals, sharp edges and sharp edges. There is an angry tuber between the leaves, commonly known as "zero remainder", dark brown, oval. The flowers are pale yellow and dioecious. Underground tubers stick-shaped, 80-100 cm long, 3-5 cm in diameter, 400-600 g in weight, thin skin, yellow-brown, reddish-brown scorpion, fine hairy roots, thin tubers, noodles, sweet taste, palatability it is good. The yield of tubers is 1500-2000 kg, and the high-yield plots can reach 2500 kg. Product Honor Xincheng Fine Hair Yam enjoys a high reputation both inside and outside Shandong Province. In 1998, it was awarded as “Zibo Famous Vegetable”. In the same year, it was registered as “Yucheng” brand Xinzhi Fine Hair Yam. In 1999, it was awarded “Shandong Famous Brand Vegetable”. In 2002, it was identified as green food by the Ministry of Agriculture. It is a national-level yam demonstration area. In 2007, the acceptance of the acceptance of the fine yam in Xintai County of Huantai County was confirmed as a demonstration area. In 2007, it was awarded the “Nutrition Special Food” by Zibo Nutrition Association. In 2008, it was awarded “Top Ten Nutritional Food” and was awarded the honor of “Shandong Top Ten Local Products” by Shandong Culture Expo. Planting conditions The soils of the new towns of Gongjia Village and Henan Village are mainly sandy loam, which is conducive to the growth and harvest of yam. The soil in other parts of Huantai County is mainly composed of medium soil and clay. Although it is also mature and fertile, the soil conditions are not as good as new towns. The Xincheng fine-haired yam cultivation has a long history. According to the history-bearing, there was planting during the Spring and Autumn Qiqigong hegemony period. It continued to develop rapidly during the Ming and Qing Dynasties and became a tribute to the court. It enjoys a high reputation both inside and outside the province. "Yintai Zhiluo" contains: "There are a variety of villages near the city, sweet and powdery, fat people grow up like arms, cover their soil fertile and yam is the most suitable, so the quality is also good, not the production of Huaiqing In the late autumn, there are a lot of traffickers everywhere." Related Allusions The New Town is the hometown of the Qing Dynasty literary leader and the famous monk Wang Yuyang (Wang Shizhen). About the fine-haired yam, there is also a picture. Figure 3 New Town People, Qing Dynasty literary leader Wang Yuyang According to legend, during the reign of Emperor Kangxi of the Qing Dynasty, Wang Yuyang officially went to the criminal department Shangshu, once he returned to the provincial capital, the road was cold, slightly small, face-faced, and his body was very weak. The neighbors of the township learned that he was in poor health and came to visit. One of them sent some yam, and the diced and glutinous rice glutinous rice was handed over to Wang Yuyang. Wang Yuyang’s great food, from then on, served a few bowls a day to regulate. In a few days, the spirit is revived, the face is ruddy, and the day is strong. Waiting for the body to heal, go to reward the neighbors, Wang Yuyang knows that the food that has been eaten all day long is the special product of the hometown New Town - "fine hair yam", which is quite famous in the folk, for the kidney and Qi, the spleen and stomach . On the following day, Wang Yuyang returned to Beijing to present the specialties of his hometown to the emperor, and told about the medicinal value of yam. Kangxi was in the royal dining room, Longyan Dayue, and since then the yam has become a tribute to the dynasties of the dynasties. .

New city fine hair yam quality technical requirements (a) varieties. Fine hairy yam. (2) Site conditions. The altitude of the protected area is 10 m to 18 m above sea level; the soil texture is sandy loam (clay soil), the soil thickness is greater than ≥150 cm, and the irrigation and drainage is convenient; the soil organic matter content is 1.2% to 1.6%, and the alkali nitrogen content is 70.5 to 80.5 mg/kg. The phosphorus content is 12.5 to 16.5 mg/kg, the available potassium content is 110 to 120 mg/kg, and the soil pH is 5.5 to 7.0. (3) Cultivation management. 1. Soil treatment: In November, the land was deeply turned over, and the trench was leveled and grooved. The groove distance was 1 m, the groove width was 30 cm to 40 cm, and the depth was 100 cm to 120 cm. After the excavated soil is frozen, it will be screened from late March to early April, and will be refilled into the ditch and stepped on. 2. Seedling treatment: (1) Seed selection: Select the disease-free and strong yam, and cut a section with crypts and stem marks from 20cm to 30cm at the upper end of the tuber as a plant. (2) Sunning: The plants are cut for 1 to 2 days, stored, and stored at a temperature of 4 ° C to 5 ° C. Allow 1 to 2 days before planting. 3. Planting: (1) Planting time: April 15 to April 25, planting when the ground temperature is stable above 9 °C. (2) Planting density: ≤60000 plants per hectare. 4. Field management: (1) Insert: When the seedling height is about 25cm, the frame is inserted, and the height is 1.0m to 1.5m. (2) cultivating: cultivating yam after shallow cultivating for 1 to 2 times, and then cultivating once after each rain. (3) Fertilization: no application of base fertilizer; three times of topdressing in the period of vine seasoning, vigorous growth of stems and leaves, and tuber expansion period, 15000 kg to 22500 kg of fully decomposed organic fertilizer per hectare and 150 kg to 225 kg of fully decomposed cake fertilizer . (4) Watering: watering once during planting; from May to June, the rainfall is not less than 100mm, and when the rainfall is not less than 260mm from July to September, it is not allowed to water, and the rainy season pays attention to drainage, and the field cannot accumulate water. 5. Environmental and safety requirements: The use of pesticides, fertilizers, etc. must comply with relevant national regulations and must not pollute the environment. (4) Harvesting. 1. Harvesting time: from October 10 to March 20, the harvesting period; 2. Harvesting requirements: vertical trenching during harvesting to prevent scratching or breaking; if overwintering, cover 20cm soil . (5) Quality characteristics. 1. Sensory characteristics: The tubers are long cylindrical, slightly thinner at both ends, 60 to 80 cm long and 3 to 5 cm in diameter; the root hair is slender and evenly distributed; the skin is thin and brittle, yellowish brown, with reddish brown spots and Uniform distribution; fine meat, white, noodles, small particles, delicate and sweet taste; no browning on the cross section; cooked in 10 minutes. 2. Physical and chemical indicators: crude protein ≥1.3%, total sugar ≥1.1%, total ash ≤1.3%, total amino acid ≥2.0%, moisture 76.0% to 83.0%. 3. Safety requirements: Product safety indicators must meet the relevant regulations of the state for similar products.

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Producers within the scope of protection of Xincheng Fine Hair Yam Geographical Indication Products may apply to the Quality and Technical Supervision Bureau of Huantai County of Shandong Province for the use of the “Special Mark for Geographical Indication Products”, which is reviewed by the Shandong Provincial Bureau of Quality and Technical Supervision and approved by the AQSIQ. Announcement approval. The statutory testing agency of Xincheng Fine Hair Yam is designated by Shandong Quality and Technical Supervision Bureau.