Yishui Ginger

Yishui Ginger

Yishui Ginger is a geographical indication agricultural product.

　　Yaodianzi Town and Yuandongtou Township are known as the “Hometown of Yishui Ginger.”

　　Ginger has long been one of Yishui County’s advantageous industries, with an annual planting area of around 80,000 mu, an average yield of 3.5 tons per mu, producing approximately 280,000 tons of ginger per year and generating an output value of 1.4 billion yuan. Currently, there are 49 ginger professional cooperatives in the county, 22 leading enterprises engaged in ginger processing, among which 13 have the right to export independently, and 3 have obtained certification from importing countries. Relying on cooperatives and leading enterprises, 13 core demonstration bases have been established, covering an area of 32,000 mu. These have received certifications including the “Yimeng Brand” pollution-free ginger, the “Yiqiang Brand” green food ginger, and the national geographical indication protection certification for “Yishui Ginger.” The county processes and exports 200,000 tons of ginger annually, earning over 40 million US dollars in foreign exchange, with products

　　Geographical Scope

　　The production area spans nineteen townships within Yishui County, Linyi City, Shandong Province, including Yao Dianzi Town, Xu Jiahu Town, Yuan Dongtou Township, Yishui Town, Guan Zhuang Township, Huangshanpu Town, Yangzhuang Town, Longjiaquan Township, and Sishipu Town. The geographical coordinates are between 118°13′00″ to 119°03′00″ east longitude and 34°36′00″ to 36°13′00″ north latitude. The highest point is Taiboding Mountain on the southern side of Mount Yi in the northern part of the county, with an elevation of 916.1 meters. The lowest point is located east of Zhushuang Village in the northeastern part of the county, at an elevation of 101.1 meters. The coldest month is January, with an average temperature of -3°C, while July is the hottest, averaging 25.5°C. The extreme maximum temperature reaches 39.2°C, and the extreme minimum is -24.9°C. The annual average temperature is 12.3°C, with an average annual precipitation of 782.1 mm, a frost-free period of 205.2 days, and an annual accumulated effective temperature of 5183.7°C. The average diurnal temperature range is 9.8°C in August and September, with a maximum of 14.2°C and a minimum of 3.5°C. In October, the average diurnal range is 10.5°C, with a maximum of 15.6°C and a minimum of 4°C. The altitude ranges from 101.1 to 916.1 meters.

　　Product Quality Characteristics

　　1. External Sensory Characteristics: The product exhibits the natural features of green food ginger. It is of normal quality without deterioration, featuring large and uniformly sized rhizomes, with an average weight of 500 grams per piece and a maximum of 1000 grams. The ginger has a bright, yellow, and lustrous color, with thick, long, and plump rhizomes that are clean, not shriveled, and free from pests, diseases, deformities, frost damage, mechanical injuries, sprouting, or other defects, meeting the standards of green food. 2. Internal Quality Indicators: Dry matter ≥7%; Calcium ≥17mg/100g; Zinc ≥0.7mg/kg; Iron ≥15mg/kg; Selenium ≥6.5mg/kg; Vitamin C ≥3 mg/100g. 3. Safety Requirements: Yishui Ginger complies with the “Pollution-Free Food Ginger” (NY5012-2002) standard.

　　V. Specific Production Methods