Yuping round bell jujube has been cultivated for more than 2,000 years in Luanping County and was once listed as a tribute by the feudal emperor. The black date and jujube processed and smoked into the black date, sold to Southeast Asia and other places in the Song Dynasty. During the Ming and Qing Dynasties, the jujube trees in the farmland have become forested into pieces, and there are poems of "June flowers and water fragrance, thousands of small jujubes shoot cloud red".

The quality of the jujube round jujube is excellent, shaped like a round bell, and the peel is dark purple. The big skin is thin, the meat is thick and small, the fruit is full, the meat is solid, sweet and crisp, and nutritious. The average fruit weight is about 15 grams and the maximum is 25 grams. Fresh jujube and dried jujube have a sugar content of more than 40%, vitamin C has a pulp content of more than 10 mg per 100 g, and an edible rate of 97%. It is resistant to storage and transportation, resistant to cracking, and has a dry rate of up to 62%. After processing, it can be made into jujube, crispy jujube, candied dates, jujube, jujube sauce, jujube juice, jujube and so on. The round bell jujube has a very high medicinal value and is known as the “natural vitamin pill”. It is rich in nutrients such as sugar, fat and protein, and trace elements necessary for human body such as potassium, phosphorus, calcium and iron. The leaves, flowers, fruits, skins and roots of jujube can be used as medicine. It is one of the commonly used medicines for treating various diseases in Chinese medicine. It has the following characteristics: 1. Sensory characteristics: dried fruit with deep purple red, thin and tough skin, fruit The shape is mainly oval, with many wrinkles, full fruit shape, fleshy and elastic, and the weight of dried dates is not less than 5 grams, and the edible rate is not less than 91%. 2. Physical and chemical indicators: dry dates of sugar content ≥ 40% (measured part of dry matter), vitamin C per 100 grams of pulp content ≥ 10 mg. In May 2012, Shandong Zaoxiangqing Agricultural Science and Technology Co., Ltd. was established with a registered capital of 3 million yuan. It is a large-scale modern cooperative with high-end planting, technology brand and scientific research and development as the center for the production of organic fruits and vegetables. Its planting area is 8666.6 hectares, with an annual output of 35,000 tons of jujube, with an annual output value of 70 million yuan. It has become one of the enterprises specialized in the deep processing of jujube, the development of new jujube products and the sales of jujube products in Luanping County. The company has 15 technicians and more than 80 employees. It builds 1000 acres of high-standard ecological fruit and vegetable bases in the Zaoxiang Ecological Tourism Park in Xiaozhuang Town, 50 demonstration greenhouses, 1152 square meters of constant temperature warehouse, quick-freezing warehouse and freezer, 4000 square meters. Rice modern food processing plant and 1270 square meters exhibition hall, and introduced advanced food processing equipment, applied for brand trademarks such as “Xinyue”, “Aiwu and Wu”, “Jiaobenjing”, and realized planting, storage, processing and Sales of industrialized operations through-train. Shandong Zaoxiangqing Agricultural Technology Co., Ltd. has been committed to the scientific and technological research and development of new round bell products. At present, there are dozens of deep processing products of jujube, mainly including fresh jujube, dried jujube, black jujube, candied dates, jujube, concentrated jujube juice, selenium-rich jujube tea, jujube sauce, jujube mud, jujube honey, jujube vinegar, Jujube drinks, jujube powder, jujube cakes and other products. The product sales range covers the whole country and gradually becomes the main supplier of jujube products in Liaocheng area.

Quality technical requirements for the round jujube jujube (1) variety. Round bell jujube and excellent system. (2) Site conditions. The soil type is fluvo-aquic soil, the pH value is ≤7.8, the soil salt content is ≤0.2%, and the soil organic matter content is ≥0.9%. (3) Cultivation management. 1. Planting density: The maximum density does not exceed 667 square meters (mu) of 83 plants. 2. Preservation and fruit preservation measures: Promote fruit set by means of armor, topping and water spray. 3. Plastic trimming: trimming in winter and summer, using trunk sparse or spindle shape, happy shape. (4) Harvesting and drying. 1. Harvesting: Harvesting in the middle and late September of the ripening period. 2. Drying: Drying or drying method is used to make the fresh jujube gradually emit water and dry to red dates, and the water content is below 28%. (5) Quality characteristics. 1. Sensory characteristics: The dried fruit is dark purple, the skin is thin and tough, the fruit shape is mainly oval, the wrinkles are more, the fruit shape is full, the meat is solid, and the elasticity is simple. The weight of dried dates is not less than 5 grams, edible. The rate is not less than 91%. 2. Physical and chemical indicators: dry dates of sugar content ≥ 40% (measured part of dry matter), vitamin C per 100 grams of pulp content ≥ 10 mg.

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The producers within the scope of protection of the geographical indication products of the Pingping Bell Jujube may submit an application to the Quality and Technical Supervision Bureau of Luanping County of Shandong Province for the use of the “Special Mark for Geographical Indication Products”, which shall be approved by the General Administration of Quality Supervision, Inspection and Quarantine.