Linxian jujube is a specialty of Linxian County, Luliang City, Shanxi Province. Linxian jujube is characterized by big head, small pit, thin skin, thick meat, fine quality and sweet taste, and is rich in protein and organic acids. Linxian jujube is a national product protected by geographical indications of agricultural products.
Linxian jujube planting has a long history. According to county records, as early as the Western Zhou Dynasty, there were large jujube orchards along the Yellow River in Linxian County. After the Tang and Song Dynasties, jujube trees were called "hardcore crops" because of their drought tolerance, and were transplanted to the east bank of Qinshui, resulting in a large number of jujube forests in most areas of the county. Jujube industry has become a pillar industry in Linxian county, especially along the yellow jujube forest area, jujube production has increased significantly, becoming the main economic source of local farmers.
Linxian jujube is very famous, and its varieties are: Muzao, Damuzao, Yuanzao, Damuzao (a jujube with good color and thick meat), Junzao, Jinzao and Lizao (fresh). Among them, local dates are the main ones.
Linxian jujube is characterized by big head, small pit, thin skin, thick meat, fine quality and sweet taste, and is rich in protein and organic acids. Appraised by Institute of Biochemical Physics, Chinese Academy of Sciences, Kaiyang Jujube contains 18 amino acids, 10 vitamins and 14 vitamin elements. In particular, cyclophosphamide, liver and selenium, which are rich in anti-cancer and health care functions, are known as the king of fruits and nourishing products.
After 10 years of hard exploration and three years of transformation, the certification application of Linxian organic jujube production base has made a fundamental breakthrough since last year. The 30,000 mu organic jujube production base has passed the strict inspection of more than 70 new national indicators and won the first jujube certification by China Certification Center.
In 20 13, "Linxian Jujube" declared by Linxian Yellow River Jujube Association passed the examination of the Agricultural Products Quality and Safety Center of the Ministry of Agriculture and organized expert review, and implemented the registration and protection of national geographical indications of agricultural products.
Applicant:
Linxian county yellow river red jujube association
Location:
20 13
Delineate the geographical protection scope:
Linxian County has 10 towns (townships), including Hook Town, Tuban Town, Babao Township, Leijiazhai Township, Qingliangsi Township, Shibaitou Township, Anjiazhuang Township, Liu Jiahui Town, Linjiaping Town and Congluoyu Town. The geographical coordinates are 1 10 29' 47 "~ north latitude 10 56' 5 1" north latitude 37 37' 20 "~ 38 12' 13.
Quality and technical requirements of jujube in Linxian county
I. Diversity
Wood jujube, military jujube, tooth jujube.
Second, the site conditions
Within the range of origin, the altitude is 673.6m to 1923m, the soil type is sandy soil, sandy loam, loam or clay loam, the soil thickness is ≥40cm, the pH value is 5.5 to 8.2, and the total salt content is ≤0.3%.
Third, cultivation management.
1. Seedling propagation: rootstock and jujube are used for grafting propagation.
2. Planting density: planting density ≤ 100 plants /667_ (mu).
3. Fertilization: The decomposed organic fertilizer ≥ 1000_/667_ (mu) should be applied once before and after defoliation and before germination in the second year.
4. Shaping and pruning: the tree is mainly in the form of small crown and sparse layer and uniaxial trunk, and pruning in winter is combined with pruning in summer.
5. Measures to improve fruit setting rate: Take measures such as picking jujube heads and releasing bees in jujube orchard.
6. Environmental and safety requirements: The use of pesticides and fertilizers must comply with the relevant provisions of the state and must not pollute the environment.
Fourth, harvest
In mid-June, 5438+ 10, the fruit is completely red and harvested at maturity.
Verb (short for verb) Dry ...
Natural air drying or drying.
Six, quality characteristics
1. Sensory characteristics: small core, thin skin, thick and full meat, uniform and complete size, fine and sweet taste, sweet and sour, and no adhesion between hands.
2. Physical and chemical indexes: total sugar (calculated by glucose) ≥60%, moisture ≤25%, edible rate ≥80%, adenosine cyclophosphate ≥ 100mg/ 100g, calcium ≥60mg/ 100g, and selenium ≥ 2 ug/.
3. Quality and technical requirements such as safety: Quality and technical requirements such as product safety must comply with relevant national regulations.
territorial scope
The geographical range of jujube production in our county is110 29' 47 "-/kloc-0 56' 51",37 37' 20 "-3812' 65438. Including Hook Town, Tuban Town, Babao Township, Leijiazhai Township, Qingliangsi Township, Shibaitou Township, Anjiazhuang Township, Liu Jiahui Town, Linjiaping Town and Congluoyu Town, with a total of 10 towns. The annual output of jujube is 200,000 tons, and the landform belongs to the topographic features of the Loess Plateau, with an altitude of 670-65438.
Product quality characteristics
1. External sensory characteristics Linxian Babao jujube is dark red in color, large in size, thin in skin and thick in flesh, small in kernel, high in sugar content, and about 60cm long after being pulled. Fresh jujube has thin skin and thick meat, crisp quality, sweet and juicy taste and pleasant fragrance. 2. Internal quality indicators: amino acid ≥ 2.87g, total sugar ≥ 56.6g, fat ≥ 0.4mg, vitamin C ≥ 149. 1mg, carotene ≥ 0.0 1mg, ascorbic acid ≥ 12mg. Inorganic acid ≥ 1.4g, iron ≥ 1.44 mg, calcium ≥10/mg, phosphorus ≥ 54 mg, and heat ≥309 kJ. 3. Safety requirements: It meets the requirements of the new hygienic standard for red dates.