The four characteristics of Yunan non-nuclear sand sugar orange are: 1) the color of the book and the bright color, the gloss is brighter; the second is the high nuclear rate and the edible rate, among which the non-nuclear rate has reached 100% in many times this year; It is a multi-chemical slag of pulp juice, which has a good taste; the fourth is high solid-acid ratio, the taste is particularly sweet, and the orange flavor is rich, which is the best in sand sugar orange.

Yunan non-nuclear sand sugar orange, specialties in Yunan County, Guangdong Province. The four characteristics of Yunan non-nuclear sand sugar orange are: 1) the color of the book and the bright color, the gloss is brighter; the second is the high nuclear rate and the edible rate, among which the non-nuclear rate has reached 100% in many times this year; It is a multi-chemical slag of pulp juice, which has a good taste; the fourth is high solid-acid ratio, the taste is particularly sweet, and the orange flavor is rich, which is the best in sand sugar orange. The scope of protection of geographical indication products of Yunan non-nuclear sugar oranges in the producing area is proposed by the People’s Government of Yunan County, Guangdong Province, on the delineation of the scope of the production of non-nuclear sugar-sweet oranges in Yunan (Yu Fu Han [2007] No. 61). The scope is subject to the jurisdiction of 9 towns such as Ducheng Town, Platform Town, Guiyu Town, Tongmen Town, Jiancheng Town, Baozhu Town, Dafang Town, Qianguan Town and Lidong Town of Yunan County, Guangdong Province. Variety characteristics of non-nuclear sand sugar orange, crown with round head shape, dense branches, slightly open, moderate tree, strong result, after planting, starting from 2 to 3 years, perennial yield of 2000 kg ~ 3000 kg, more than four years of abundance The period can reach about 5,000 kg, mature period 11 to December, the fruit is round or oblate, the skin is cinnabar-like, red and beautiful, the skin and flesh are compact, but easy to separate, peeling and not wet hands. The flesh is sweet and juicy, with no nucleating slag, refreshing and crisp, and high quality. It has become a mainstream product in the citrus market because of its wide adaptability, strong cold resistance, long and short life, short branch dwarf, early knot and long life, high yield and stable production, and good market prospects. The seedless sand sugar orange is an evergreen fruit tree, which has strong adaptability to the soil and is suitable for planting in both mountains and paddy fields. Product Honor Yunan County is one of the important producing areas of Guangdong sugar orange. In 2009, the planting area was about 300,000 mu, and it has been put into production of 200,000 mu, with a total output of about 350,000 tons. It is mainly distributed in 6 professional towns such as Ducheng, Platform, Guiyu, Jiancheng and Tongmen. In November 2003, “Yujiang Brand” Shatang Orange was awarded the title of Grade A Green Food by China Green Food Development Center. The certificate number is: LB-18-0311190913A. In April 2004, Yunan County was approved by the Guangdong Provincial Department of Agriculture to create a “Green Food Demonstration County”. In November 2005, China Fruit and Vegetable Industry Development Forum awarded Yunan County as “the leading county of Chinese citrus industry”. In 2006, China Fruit Distribution Association awarded Yunan County as “the key county of China's high-quality fruit base” and awarded the county town as “China's high-quality sand sugar base base town”. In May 2008, the State Administration of Quality Supervision, Inspection and Quarantine approved the implementation of the protection of geographical indication products. (AQSIQ Announcement No. 50 of 2008)

Yunan non-nuclear sand sugar quality technical requirements (a) varieties. Jiancheng Longtang seedless sand sugar orange line (October orange preferred strain). (2) Site conditions. The annual accumulated temperature is above 7800 °C. The soil type is red soil, red soil, yellow soil, purple soil and tidal sand. The living soil layer is more than 600mm, the organic matter content is above 2.0%, the pH value is 5.6 to 6.5, the water source is sufficient, the groundwater is below 800mm, and the slope is 25°. The following hillsides. (3) Cultivation techniques. 1. Breeding: Using sour oranges and alfalfa as rootstocks, select excellent virus-free mother tree scions for grafting. 2. Colonization: Planting is carried out after the new shoots are matured or before germination. Digging a hole, planting weeds, green manure, soil fertilizer and lime. The spring planting is carried out in April after the spring shoots are matured in early March; the autumn planting is carried out in the early autumn after the autumn shoots; the winter plantings are carried out from December to January; the container seedlings are not subject to seasonal restrictions. The planting density is less than or equal to 1100 plants per ton. 3. Soil management: After the planting of the hills in the third year, the autumn shoots will be deep-pressed and green soil will be changed, and the soil will be covered. Each year, the position is rotated and moved outside until the whole garden is dug and the soil is changed; the paddy fields and the flat land are plucked every year. 4. Crown structure: through the control of the buds, the short cuts (picking), and the timely cutting, take plastic trimming and other measures to cultivate a compact round head-shaped high-yield canopy. 5. Fertilization: mainly organic fertilizer, combined with phosphorus and potassium fertilizer, suitable for nitrogen fertilizer, organic fertilizer accounts for more than 50% of total fertilization. 6. Moisture management: It is necessary to establish a complete irrigation and drainage system in the orange garden in accordance with the requirements of “dry irrigation and irrigation”. According to the growth characteristics of orange trees, reasonable irrigation and drainage are carried out. 7. Environmental and safety requirements: The use of pesticides, fertilizers, etc. must comply with relevant national regulations and must not pollute the environment. (4) Fruit harvesting. The fruit is in the harvesting period when the soluble solids reach more than 14%, and the total sugar is ≥11g/100ml. The irrigation should be stopped 10 days before harvesting. (5) Quality characteristics. 1. Sensory characteristics: The project requires that the fruit shape be oblate and the fruit has a diameter of 35mm to 55mm. Single fruit weight 35 g to 65 g peel peel smooth, orange red or vermilion, sand. The flesh is rich in juice, non-nuclear (a few occasionally 1 to 2 nucleus), slag, sweet and refreshing. 2. Physical and chemical indicators: the project requires soluble solids (%) ≥ 13.5 total acid (%) ≤ 0.45 solid acid ratio ≥ 30: 1 edible rate (%) ≥ 75 total sugar (g / 100ml) ≥ 11.0 no nuclear rate (%) ≥ 963. Safety requirements: Product safety indicators must meet the relevant national regulations for similar products.

Apply to：
Producers within the scope of protection of the Yunan non-nuclear sand sugar orange geographical indication product may apply to the Quality and Technical Supervision Bureau of Yunan County, Guangdong 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.