Relevance of origin of Chaoyang jujube

The reason why Chaoyang jujube has unique quality and is famous all over the world is not only the excellent varieties and scientific cultivation methods, but also the unique natural conditions. Unique geographical location: Chaoyang County belongs to the mountainous and hilly area in western Liaoning. Its geographical location is 119°52′-120°47′ east longitude and 40°55′-41°54′ north latitude. It is located within the northern critical line demarcated for jujube cultivation areas in my country. . Living in the north temperate continental monsoon climate zone, although the southeast is affected by the warm moisture of the ocean, the dry and cold air from the northern Mongolian Plateau often invades, forming a semi-dry and semi-humid river valley zone, with the geographical characteristics of seven mountains, one water and two fields. . This unique geographical environment is very suitable for the growth of existing varieties of Chaoyang jujube. Temperature, light, and precipitation conditions: Chaoyang belongs to the north temperate continental monsoon climate zone. The annual average temperature is between 5.4°C and 8.7°C, the average annual sunshine hours are 2850-2950 hours, and the annual precipitation is 450-580mm. The early-maturing growing season from April to September has warm weather, sufficient sunshine, moderate rainfall, and even distribution. It is the best climate area for cultivating jujube in my country. The main growing season of jujube trees from May to August has an accumulated temperature of more than 3600°C, ranking first among all jujube regions in the country. First of all, it has four distinct seasons, drought and little rain, and a large temperature difference between day and night. The average annual evaporation is 4.3 times that of rainfall, which is conducive to the accumulation of sugar, creating the sweetness and crispness of Chaoyang jujube. In June, the average temperature during the jujube flowering period is 25.2°C, which is the optimal temperature for Chaoyang jujube to bloom and set fruit, ensuring stable and high yields. September is the ripening period for jujube fruits, with sunny weather and little rain, which is very beneficial to adding sugar and color to the pulp of Chaoyang jujube, reducing rain cracks and berries, and increasing the high-quality rate of Chaoyang jujube. Soil conditions: Chaoyang County is located in the mountains and hills of western Liaoning. The soil is mainly sandy loam, with a soil layer of more than 200cm, a pH value of 7.2-8.4, good aeration, and a certain water retention capacity, providing necessary moisture for the growth of jujube trees. The contents of titanium, cobalt, zinc, iron and other trace elements in the soil of different jujube areas are obviously different. The contents of titanium, cobalt and zinc in the Chaoyang jujube producing area are higher than those in other areas. The content of titanium, cobalt, zinc and other trace elements in the soil is obviously different. The content status provides a relative potential supply capacity and storage environmental conditions for improving the quality of Chaoyang jujube. The unique location, climate and soil conditions of Chaoyang County have created the excellent quality of Chaoyang jujube. After years of cultivation and development, Chaoyang jujube has become one of the pillar industries of our county’s rural economy and the main channel for farmers to increase their income. The market reputation is very good. On May 13, 2011, the General Administration of Quality Supervision, Inspection and Quarantine issued Announcement No. 70 of 2011. According to the "Regulations on the Protection of Geographical Indication Products", Chaoyang Jujube was approved to be a protected geographical indication product after passing the review. After "Chaoyang Jujube" was approved for protection by the General Administration of Quality Supervision, Inspection and Quarantine, the use of the special mark for the protection of geographical indication products further enhanced the brand awareness of "Chaoyang Jujube", formed greater industrial advantages, and effectively promoted the county economy. Good and fast development. Chaoyang County Quality Supervision Bureau will further promote the formulation of provincial and local standards for geographical indication products and the "Chaoyang County "Chaoyang Date" Geographical Indication Protection Measures", as well as the application for the "Chaoyang Date" special mark, and strive to make "Chaoyang Date" ” has become a golden business card for Chaoyang County’s economic development, which is well-known at home and abroad.