Introduction to Qishan Yam
Qishan Medicine, also known as Huai Yam or Ma Yam, is a top-grade herb in the "Ben Jing" and the root and stem of the Dioscorea plant in the Dioscoreaceae family. The original name of this sutra was Dioscorea, but due to the Tang Dynasty Emperor's name Yu, it was changed to Potato Medicine to avoid taboo. Later, it was changed to Yam due to the Song Dynasty Emperor Yingzong's name Shu. Yam is produced in most parts of the country, especially in the Huaiqing Prefecture area of Henan Province, where the yield is high and the quality is excellent, hence it is known as "Huai Yam". Because yam is a dual-purpose medicinal and edible variety with a large expansion area, the production in the Anguo area of Hebei Province is very large, and its products are distributed in the Anguo distribution center, hence it is called "Qishan Medicine"
The fresh Qi yam is slightly cylindrical in shape, slightly flattened, about 1 meter long, with a diameter of 1.5-3 centimeters, and uneven at both ends. The surface is pale yellow white or light brownish yellow, with a few fibrous roots. Solid quality, not easy to break, white cross-section, granular, powdery, scattered with light brownish yellow dots. Chinese yam is cylindrical, slightly flattened and curved, measuring 10-30 centimeters in length and 1.5-5 centimeters in diameter. The surface is yellow white or light yellow, with longitudinal grooves and wrinkles. Solid in texture, not easily broken, with a white, powdery, granular cross-section, and faintly visible pale yellow dotted vascular bundles. Qi is absent, the taste is sweet and slightly sour, and it feels sticky when chewed. Solid quality, sufficient powder, and pure white color are preferred. Guangyams are cylindrical in shape, with both ends flush, measuring 10-25 centimeters in length and 1-3 centimeters in diameter. Smooth and straight surface, white or yellow white. Solid and powdery in textureThe region of Anguo City in Hebei Province belongs to a continental semi-arid monsoon climate with distinct four seasons and simultaneous rainfall and heat. Spring is dry and windy, with a rapid rise in temperature. Summer is hot and rainy, while autumn is warm during the day and cool at night, with significant temperature differences; Winter is cold with less rain and snow. The soil is composed of brown soil and alluvial soil, with two types of parent materials: alluvial impact parent material and alluvial deposition parent material. The texture is mainly sandy soil and light soil, with high fertility. All of it is irrigated with underground fresh water, with good water quality and a pH value of 7.8-8.2, which meets the national farmland irrigation standards and is suitable for planting Chinese yamIn 2018, the planting area of Qiyam was 12000 mu, with a yield of over 6150 tons. The planting and protection areas of Qiyams include 11 townships (offices) in Anguo City, Hebei Province, including Wurenqiao Town, Zhengzhang Town, Dawunu Town, Xicheng Town, Mingguandian Township, Beiduan Village Township, Nanloudi Township, Shifo Town, Xifuluo Town, Qizhou Road Sub district Office, and Yaodu Sub district Office, involving 198 natural administrative villages. The geographical location is: longitude 115 ° 10 ′ 10 ″ E to 115 ° 30 ′ 20 ″ E, latitude 38 ° 14 ′ 22 ″ N to 38 ° 34 ′ 15 ″ NWhat is the nutritional value of Qi yamBoiling water at a constant temperature results in clear and stable soup, unchanged body shape, smooth cylindrical shape, and a white jade like color