Quality characteristics and production environment of Yidu mandarin oranges

Everyone knows that Yidu mandarin is a delicious fruit, but do you know some of the characteristics of Yidu mandarin ? Let me introduce them to you.

Yidu Mandarin Orange

Yidu Mandarin is a specialty of Yidu. On February 21, the Trademark Office of the State Administration for Industry and Commerce issued a registration announcement, and the geographical indication collective trademark "Yidu Mandarin" registered by the Yidu Citrus Association of Hubei Province obtained the exclusive trademark right. This marks that Yidu City has another geographical indication collective trademark after "Yidu Natural Zinc-rich Tea", and has become the county with the most geographical indication collective trademarks in Yichang.

Citrus is a pillar industry in Yidu. In order to support the development of citrus and promote agriculture through brand development, the Yidu Municipal Administration for Industry and Commerce helped the Yidu Citrus Association and Panjiawan Tujia Township to establish a pollution-free

Quality characteristics of Yidu mandarin oranges

Egan No. 2 is the main variety of Yidu mandarin orange, belonging to the genus Egan No. 2, which is a wide-skinned mandarin orange variety. The tree is strong, the tree shape is relatively open, the leaves are large, the germination rate is strong, the branching ability is medium, and the new shoots are soft. The flower bud differentiation ability is strong, and the flowers are generally single, with the main fruiting branches being the leaves. The main fruiting mother branches are spring shoots and early autumn shoots, with spring shoots being the best fruiting branches. The fruit is monoecious, seedless, high and oblate, with a single fruit weight of about 125.0 grams, and is relatively uniform in size. The skin is thin, the edible rate is high, and the central column is relatively full. It begins to color in late September and matures in early October. The peel is shiny orange-yellow when it is just colored, and orange-red when it is fully ripe. The cold resistance is similar to that of Kamei Wenzhou mandarin orange, and it has strong adaptability. The quality was tested by the Food Quality Supervision and Testing Center of the Ministry of Agriculture. The vitamin C content is 239 mg/kg, the soluble solids are 10.7%, the titratable acid is 0.88%, and the total sugar is 6.80%. It has a strong flavor and is refreshing and crumb-free. From 1984 to 2003, it was tested and planted in Yichang, Laohekou and other places. Generally, the fruit was tested three years after the establishment of a new orchard, and the yield per plant could reach 10 kg in four years. After six years, it entered the peak fruit-bearing period, and generally the yield per mu was 3,000 kg. In 2004, it was approved by the Hubei Provincial Crop Variety Approval Committee, and the variety approval number was E Shen Guo 2004001.

Yidu mandarin orange production environment

Yidu City is located in the middle reaches of the Yangtze River, near the exit of the Three Gorges, and in the southwestern part of Hubei Province. It is in the transition zone from the Jianghan Plain to the mountainous area of ​​western Hubei Province. A girl from Yidu City shows mandarin oranges at the planting base. The territory covers an area of ​​1,357 square kilometers. The terrain is high in the southwest and low in the northeast, and it slopes from southwest to northeast. It is a hilly semi-mountainous area. The eastern part is hilly, with an altitude of 50-250 meters. The terrain along the exit of the Yangtze River and Qingjiang River is flat and fertile. The central part is interlaced with hills, gullies and hillocks, but the slope is relatively gentle, forming a flat field, which is the main production area of ​​grain, oil and agricultural products in the city. The city is located at 30°06′—30°36′ north latitude and 111°06′—111°36′ east longitude. It has obvious monsoon and belongs to the subtropical monsoon climate. It has distinct four seasons, mild climate, abundant rainfall, sufficient sunshine, and short severe winter and hot summer. The annual average sunshine hours are 1,657.7 hours. The city's annual average temperature is 16.7℃, the daily extreme maximum temperature is 40.8℃, and the daily extreme minimum temperature is -13.8℃. The temperature fluctuates greatly in spring, with sunny and hot summers, rapid temperature drops in autumn, and short severe winters. In 80% of the years, the average temperature in January is above 4℃, which provides a guarantee for the safe wintering of crops such as citrus, tea, and tung oil. The average annual rainfall is 1235.4mm, the highest annual rainfall is 1869.0mm, and the lowest annual rainfall is 757.2mm. During the crop growing season (April to October), more than 80% of the rainfall in the city exceeds 1000mm, which can meet the normal growth needs of crops and is very suitable for the production and development of citrus. It is the most suitable area for broad-skinned citrus in China's citrus zoning.

Historical Origins

The cultivation of Yidu mandarin oranges has a long history: in 450 AD, there was a record about "Yidu mandarin oranges" in the book "Jingzhou Ji" written by Sheng Hong. The long history of cultivation has attracted countless literati and poets to write about it, and also attracted many experts and scholars to explore the past and discuss the present. "On the clear river bank in spring, there are two hectares of gardens with thousands of mandarin oranges. The blue clouds are ashamed of the dense leaves, and the white snow avoids the dense flowers. The fruits are set with the border envoys, and the tubes are opened close to the supreme. After the peaches and plums are ripe, they are finally presented to the Golden Gate." This poem "Hengchi Mandarin Garden" was improvised by Du Fu, a realist poet in the Tang Dynasty, when he visited the scenery of Hengchi Mandarin Garden in Yidu. The "Hengchi" mentioned in the poem is near the Huamiao Dike in Lucheng, Yidu City. In the Qing Dynasty, Peng Ying, the magistrate of Yidu County, also wrote the beautiful sentence "Ten miles of yellow mandarin oranges are lush, how about eight hundred mulberry trees?"