Gonggan is a natural hybrid variety of tangerine and orange. It has the advantages of tangerine and orange at the same time, and the pulp tastes excellent.

Gonggan orange fruit has a beautiful shape, golden color, thin skin and few cores, brittle flesh and low acidity, high sugar and low acidity. It combines the double advantages of oranges: beautiful appearance, tender flesh and easy peeling. According to the "Sihui County Chronicle" written by Guangxu of the Qing Dynasty, tribute tangerine originated from Sihui and is a natural hybrid of orange and tangerine, but its parents cannot be studied.

Gonggan is a unique local farmer’s excellent citrus variety in my country. Historically, because of its particularly excellent quality, it was listed as a tribute by the feudal dynasty and developed into a famous local specialty among the people.

In recent years, Guangdong Province has used local varieties of tribute tangerines for industrial development and achieved great commercial success. The tribute tangerines of Deqing County, Zhaoqing City, Guangdong Province are known as the "Chinese Orange King". Deqing County has also been awarded the title of "China's Hometown of Tribute Oranges" and has obtained the country's "Region of Origin Product Certification". Zhaoqing City, Guangdong Province's four Huigong Mandarin has also been approved as a "registered certification trademark of origin".

Extended information

Sihui, the origin of tribute tangerine, is located in the west-central part of Guangdong Province, within the Pearl River Delta. The Tropic of Cancer crosses the area, with an average annual temperature of 20 to 23°C. The average frost-free period is 360 days, the average precipitation is 1450-1800mm, the annual average relative humidity is 83%, and the soil is mostly mountain yellow soil and red soil.

Temperature is the limiting factor in tribute tangerine cultivation, which is related to the survival of the plant as well as its yield and quality. The optimum temperature for the growth of tribute tangerine has not yet been determined, but judging from the geographical range of its origin, the optimum temperature for growth is relatively high, in areas with an annual average temperature of 20 to 23°C and winter temperatures rarely below -2 to -1°C. , which can best exert its high yield and high quality. In high-temperature areas, the fruit has a high sugar-to-acid ratio, a sweeter taste, more juice, soft pulp, and thinner skin; in low-temperature areas, the opposite is true.

Gonggan is native to summer wet areas with abundant rainfall, and has a large annual water demand. Generally, the annual rainfall is about 1500mm. The later stage of fruit development is from October to December, which has less rainfall. In the dry season, water needs to be replenished in time. Compared with Sugar Orange, another main variety grown in Guangdong Province, the fruit quality of Gonggan is more sensitive to rainfall from October to December.

Baidu Encyclopedia-Gonggan