Hengshan Daming mung beans are agricultural products with geographical indications.

Daming mung beans have a long history of cultivation in Hengshan County.

It is resistant to drought, tumors, etc., and has strong adaptability. It is known as the green pearl among grains and is the best-selling product in Hengshan County for exporting and earning foreign exchange.

At present, it has become the most viable pillar industry in the rural commodity economy. Daming mung beans enjoy a high reputation in the international and domestic markets and are designated as imported inspection-free products by Japan.

In 1986, Hengshan was established as the Shaanxi Daming mung bean production base county. In 1996, it was designated as the Daming mung bean standardized production demonstration county by the Provincial Technical Supervision Bureau.

The county has a planting area of ??more than 300,000 acres, with a total output of 15,000 tons, exports of 12,000 tons, and foreign exchange earnings of 10 million US dollars. Hengshan Daming mung beans have won the favor of domestic and foreign merchants and experts at many agricultural exhibitions due to their large grains (particle diameter 3.2-3.6mm), grain weight (thousand-grain weight 6.5-80 grams), and bright color (green).

Regional scope

The Hengshan Daming mung bean planting area is located in Hengshan County, Yulin City, Shaanxi Province, with an altitude of 890-1543m, east longitude 108°56′-110°20′, north latitude Between 37°20′-38°14′. The planting area borders Yuyang District to the north, Zizhou and Zichang County to the south, Jingbian County to the west, Mizhi County to the east, and Wushen Banner of Inner Mongolia to the northwest. It is 96km wide from east to west and 100km long from north to south, with a total area of ??4333km2. The administrative districts belong to Dangcha, Wuzhen, Gaozhen, Shiyaogou, Hancha, Dianshi, Nanta, Xiangshui, Polo, Baijie, Leilongwan, Hengshan Town, Zhaoshipan and Tawan in Hengshan County, Shaanxi Province There are 358 administrative villages in 18 towns including Aihaomao, Shuangcheng, Shiwan and Weijialou and 10 branches of Shima_Farm. The total production area is 16,666.7 hectares, and the total annual output is 15,000 tons.

Natural ecological environment and humanistic and historical factors

(1) Soil and landform conditions: The Hengshan Daming mung bean planting area belongs to the hilly and ravine area on the southern edge of the Mu Us Desert. The soil, water sources and air are clean. The land resources are abundant, which is conducive to crop rotation; the land type is mainly loess soil, with a deep soil layer and loose texture, which is conducive to root penetration; the soil organic matter content of the cultivated layer is 0.83%, the total nitrogen content is 0.05%, the total phosphorus content is 0.12%, and contains It is rich in potassium, has good tillability, and has strong ability to retain water and fertilizer; the pH value is 7-7.5.

(2) Hydrological conditions: There are 53 large and small rivers distributed in the area. The ones with larger flows and basins include Wuding River, Lu River, Dali River, Xiaoli River, Heimuo River and Heihe River. The growth of mung beans depends on natural precipitation.

(3) Climate conditions: The area has sufficient light and heat resources, with an average annual temperature of 8.6°C and an accumulated temperature of ≥10°C of 3259.7°C. The temperature difference between day and night is large, the lighting time is long, and the photosynthetic efficiency is high; the temperature change pattern from May to September is low → high → low, which is consistent with the temperature changes required at different stages of mung bean growth and development; the annual precipitation is about 400mm, 70% concentrated in 7 The three months of August and September are rainy and hot in the same season, which is conducive to the growth and development of Hengshan Daming mung beans. There is less rain during the mung bean harvest period, which is conducive to drying and threshing.

(4) Humanistic and historical situation: Hengchuan County is the main mung bean producing area in Shaanxi Province. It has a history of mung bean cultivation for more than 2,000 years. The area of ??Hengshan Daming mung bean planted in the area is 250,000 acres all year round, with a total output of 15,000 tons. . Hengshan Daming mung beans are named after Hengshan County agricultural technicians performed systematic breeding from local farmers. They have the characteristics of stable yield, high yield and excellent quality. In 1985, Shaanxi Province designated the Daming Mung Bean production base county. The Hengshan Daming Mung Bean produced is the best food in the world that is natural, high in protein, low in fat and pollution-free. It is known as the "green pearl" in food and is a high-quality food. An important part of the processing and export of small grains, it is irreplaceable in the Southeast Asian, European and American markets, and enjoys a high reputation at home and abroad. It exports 15,000 tons annually and earns more than 10 million US dollars in foreign exchange.

Production technical requirements

(1) Selection of origin: Hengshan Daming Mung Bean selects different production areas based on the quality and safety of agricultural products, namely organic mung bean production areas and pollution-free mung bean production areas. Comply with the production environment standards for organic agricultural products or the production environment standards for pollution-free agricultural products respectively. In terms of production, it is generally necessary to choose non-leguminous plots for planting.

(2) Variety selection: Select seeds with full grains and characteristics of Hengshan Daming mung beans as production seeds, and remove abnormally colored grains during sowing.

(3) Production process management regulations: Implement the "Hengshan County Daming Mung Bean Production Technical Operating Procedures", all manual operations from sowing to harvesting, mainly using farmyard manure, applying a small amount of chemical fertilizers, and no pesticides , rotated with grass, solanaceous and pasture crops. During the cultivation, weeding, and picking processes, any abnormal-shaped weeds found should be removed promptly.

(4) Regulations on post-harvest handling of products: All operations from harvesting to threshing are manual, no secondary pollution, low breakage rate, few abnormally colored grains, no stray beans, no foreign matter, and high processing quality. Storage resistant.

(5) Production record requirements: Record in detail the date of production operations, the name of the agricultural input used, the manufacturer, the amount of application, etc. In addition to the processing, grading, packaging, storage and transportation of mung beans, other production processes should comply with the national standard "Mung Beans GB10462-89" of the People's Republic of China, and have detailed records.

Typical product quality characteristics and product quality and safety regulations

(1) External sensory characteristics: The growth period of spring sowing in the open field is 105-115 days, the plant type is upright, and the plant height is 45- 65cm, broad oval leaves, dark green leaves, yellow-green flowers, unlimited pod-forming habit, black pods when mature, 6-8 main stem branches, 22-24 pods per plant, pod length 10-12cm , the number of seeds per pod is 12-14, the weight of 100 seeds is 6.5-8.0g, the seeds are cylindrical, dark green and shiny.

(2) Intrinsic quality index: Contains 22.0-23.2% protein, 0.7% fat, and 53.8% starch. Raw bean sprouts are white in color, tender in texture, and sweet and crispy in texture. There are no moldy grains and hard solid grains, strong germination potential, high germination ability, and a germination rate of more than 99%. The bean sprouts produced grow neatly, have uniform thickness, are resistant to high temperatures, and last 6-10 days longer than Northeastern mung beans. They can be produced and sold all year round. Mung bean sprouts are rich in protein, various mineral elements and vitamins A, B, C, and E. Vitamin B17 has a strong anti-cancer effect. Regular consumption of mung bean sprouts can effectively treat high blood pressure, diabetes, lower cholesterol, and prevent gastric cancer and rectal cancer.

(3) Safety requirements: Hengshan Daming mung bean original seed quality standards: purity ≥99.5%, clarity ≥99%, germination rate ≥99%, moisture ≤12%, total number of imperfect grains ≤ 1%, impurities ≤0.5%, 100-grain weight ≥7.0g. According to the national "Main Crop Seed Quality Standards", Hengshan Daming Mung Bean Improved Seed Quality Standards: Purity ≥99%, Clarity ≥98%, Germination Rate ≥98%, Moisture ≤12%, Total Imperfect Kernels ≤2%, Impurities ≤0.5%, 100-grain weight ≥7.0g. The Hengshan Daming mung bean products produced meet the standards of pollution-free agricultural products "NY5203-2004 Pollution-free Food Mung Beans".

Packaging labeling and other relevant regulations

The packaging should clearly indicate the geographical indication of agricultural products "Hengshan Daming Mung Bean". Each package should be marked with the place of production, the product's standard number, trademark, name of the production unit, detailed address, specifications, net content and production year, processing and packaging date, etc. The handwriting on the mark should be clear, complete and accurate.