Origin correlation of Chaoyang jujube

Chaoyang jujube is famous for its unique quality. In addition to excellent varieties and scientific cultivation methods, unique natural conditions are the decisive factors. Unique geographical location: Chaoyang County belongs to the mountainous and hilly area of western Liaoning, and its geographical location is119 52'-120 47' and 40 55'-4154' north latitude, which is within the northern critical line defined by Chinese jujube cultivation areas. Living in the continental monsoon climate zone in the north temperate zone, although the southeast is affected by warm and humid oceans, due to the frequent invasion of dry and cold air in the northern part of the Mongolian Plateau, a semi-dry and semi-humid valley zone has been formed, which has the geographical characteristics of seven mountains, one water and two fields. This unique geographical environment is very suitable for the growth of the existing variety Chaoyang Jujube. Temperature, light and precipitation conditions: Chaoyang belongs to the continental monsoon climate zone in the north temperate zone, with an average annual temperature of 5.4-8.7℃, annual sunshine hours of 2,850-2,950 hours, annual precipitation of 450-580 mm, and the early growth period of April-September. It is the best climate zone for jujube cultivation in China with warm weather, abundant sunshine, moderate rainfall and even distribution. From May to August, the accumulated temperature during the main growth period of jujube trees was above 3600℃, ranking first in all jujube regions in China. There are four distinct seasons, drought and little rain, and the temperature difference between day and night is large. The average annual evaporation is 4.3 times of rainfall, which is beneficial to the accumulation of sugar and makes Chaoyang jujube sweet and crisp. The average flowering temperature of June jujube is 25.2℃, which is the best temperature for flowering and fruit setting of Chaoyang jujube, which can ensure stable and high yield. In September, the jujube fruit is ripe, and it is sunny and rainy, which is very beneficial to increase the sugar and color of Chaoyang jujube pulp, reduce rain cracking and berries, and improve the quality rate of Chaoyang jujube. Soil conditions: Chaoyang county is located in the hilly area of western Liaoning. The soil is mainly sandy loam, with a soil layer of more than 200cm and a PH value of 7.2-8.4. It has good ventilation and certain water retention capacity, and provides necessary water for the growth of jujube trees. The contents of trace elements such as titanium, cobalt, zinc and iron in soil of different jujube areas are obviously different. The contents of titanium, cobalt and zinc in Chaoyang jujube producing area are higher than those in other areas. The contents of trace elements such as titanium, cobalt and zinc in soil provide relatively potential supply capacity and storage environment conditions for improving the quality of Chaoyang jujube. This unique geographical location, climate and soil conditions in 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 rural economy in our county and the main channel for farmers to increase their income, with a good market reputation. 20 1 1 On May 3rd, the General Administration of Quality Supervision, Inspection and Quarantine issued Announcement No.70 (20 1 1). According to the Regulations on the Protection of Geographical Indications, Chaoyang Jujube was approved as a geographical indication protection product after passing the examination. After the protection of "Chaoyang Jujube" was approved by the General Administration of Quality Supervision, Inspection and Quarantine, the use of special signs for the protection of geographical indication products further enhanced the brand awareness of "Chaoyang Jujube", formed a greater industrial advantage, and effectively promoted the sound and rapid development of county economy. The Quality Supervision Bureau of Chaoyang County will further promote the formulation of provincial and local standards for geographical indication products and the Measures for the Protection of Geographical Indications in Chaoyang County, as well as the declaration of special signs for Chaoyang Jujube, making Chaoyang Jujube a golden business card with a good reputation for economic development in Chaoyang County at home and abroad.