The origin of Tangerine in Dongjiang Lake is Zixing City, Hunan Province. Dongjiang Lake is located in the upper reaches of Dongjiang River in Zixing City, Chenzhou City, Hunan Province. Its water storage capacity is equivalent to half of Dongting Lake, and its water quality is good, which can provide sufficient irrigation water for citrus production base. Dongjiang Lake tangerine is oblate, with regular fruit shape, smooth fruit surface, orange peel, orange pulp, seedless and juicy, rich flavor and moderate sweetness and sourness. On February 1th, 215, the former People's Republic of China and the Ministry of Agriculture approved the registration and protection of national geographical indications of agricultural products for "Dongjiang Lake Tangerine".

1. Product features

1. The fruit is oblate, with a regular shape, a single fruit weighing about 8-12g, a smooth surface, an orange-red peel, a thickness of about 2-2.8mm and small oil cells.

2. The pulp is orange, easy to split, the juice cell is tender, seedless and juicy, with rich flavor, moderate sweetness and sourness, melting slag, high edible rate and high quality.

Second, the landform of the producing area

1. The Tangerine producing area in Dongjiang Lake is a typical red-bed hilly landform with an altitude of 3-5m and a slope of 25? Below, the soil is red loam and yellow loam (formed by weathering limestone and slate rock).

2. The soil in the producing area is rich, loose and breathable, with water and fertilizer conservation, PH value of 4.5-6.5, and rich in various mineral elements. The organic matter content per kilogram of soil reaches 1.5-6.6g, the total nitrogen content reaches 1.5-2.83g, the available phosphorus content reaches 1.5-225mg and the available potassium content reaches 3-328mg.

Third, the climate of the place of origin

1. It belongs to subtropical monsoon humid climate, with moderate temperature, abundant rainfall and sunshine, and distinct four seasons.

2. The average sunshine hours reach 1461.1 hours/year, and the effective accumulated temperature is? 1℃ is 5856.1℃, the annual average temperature is 23.18℃, the extreme high temperature reaches 37.4℃, the extreme low temperature is -2.7℃ and the frost-free period is 343 days.

3. The average rainfall is 1462.6 mm/year, and the average relative humidity is 78%. The large water body effect of Dongjiang Lake makes the unique microclimate in the lake warm in winter and cool in summer.