Gucheng Lake crabs are titled with five national titles: the country's first organic crab certification, the first national-level Yangtze River Chinese mitten crab breeding field, the country's first crab ecological breeding standard, the first national-level Chinese The comprehensive demonstration zone for the standardized production of Eriocheir sinensis and the Chinese well-known trademark of the first crab brand in China. In particular, China's well-known trademarks, this is the only crab brand in the country's aquatic products category that has won this honor.

Quality characteristic green (green food, assured crab) early (listed early, the earliest in the country) large (large size, 60% or more accounted for 60%) fat (succulent full) 腥 (crab-flavored full) fresh (crab meat amino acid) Sweet (good taste, fresh and sweet) 靓 (green back, white belly, golden claws, yellow hair, red cream crab accounted for 95%, is the export of the best products) Landmark Ge Gucheng Lake waters hundred miles, blue waves The water is pure as a mirror, the water is deep and hard, the water and grass are abundant, the extension is wide, and the climate is pleasant. It is the ideal “Crystal Palace” for crabs to settle and grow. There is no source of pollution around Hutian, staggered, tree-lined, Tianshui, and Gull Heron, which has a fascinating natural environment. Therefore, the crabs grown here are particularly different in shape and meat in the crab family. They have four characteristics: one is the green back, the crab shell is green and muddy, smooth and shiny; the other is white belly and muddy. Umbilical abdomen crust, crystal clear white, no ink spots; three is yellow hair, the crab legs are long and yellow, the roots are smooth; four are golden claws, crab claws golden, solid and powerful, placed on the glass plate, eight feet Standing upright, double cheeks vacated, umbilical back uplift, prestige. Its flesh is tender, delicious and nutritious. According to experts' determination, every 100 grams of Gucheng Lake crab crab meat contains 17.5 grams of protein, 130 mg of calcium, 0.28 mg of riboflavin, and 389 micrograms of vitamin A. In addition to being a valuable food, Gucheng Lake crab has a high nutritional value and a certain medicinal value. According to the "Compendium of Materia Medica" and some medical books in ancient China, crabs have the effects of heat dissipation, digestion, and stomach treatment. In the early years of the Republic of China, Shi Jinmo, one of the four famous doctors in Beijing, was a famous leader who loved to eat crabs. He divided the crabs produced in various places into six grades, namely lake crab, river crab, river crab, and crab. The gully crab and the sea crab, among which the first is the lake crab, and the big crab produced by Gucheng Lake ranks first in the first class, which is like the champion of the first one. History and culture In the south of the Yangtze River, crabs are harmful to the farmland and cause disasters. They are also regarded as monsters. In Gao Deji's "Pingjiang Chronicle", the Ding Ding Ding (1307) was written in the Yuan Dynasty. "Wuzhong crab is like a locust, Pingtian is full, and the rice is full." When the Ming Dynasty Hairui went to Wuzhong as a magistrate, he also encountered crabs. The sturdy and sturdy "traffic in the middle of the field, the rice is ruined. The people called the crabs "cage insects". Once they found out in groups in the fall that they came out to endanger the crops, they were anxious to burn the candles and pray for the gods, or to cry on the crabs. After Hai Rui discovered the crab disaster, he took the lead in the cooking of the people, and he was not only the banker, but also the people. The trough is Penglai. It is also necessary to drink fine wine and take the drunken high platform."——Li Bai "Half-shell contains yellow should be sprinkled, two cheeks and two cheeks are snowed to persuade the meal" "Not less than the peak of the mountain, not eating crabs Abdomen" - Su Dongpo "more flesh is more pitiful, eight-footed, who helps me to persuade me" - Lin Daiyu's "Dream of Red Mansions" heroine "has a full load of 100-year-old boat, four-pointed sweetness, two hands, right hand holding wine glass, left hand holding crab Chess, shot in the floating wine boat, it will be a lifetime!" - "Shi Shuo Xin Yu" "scared with the tiger, the cold sand and the fire, even though it is three times in the sky, it is not forbidden." "-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Produced in the beautiful Jiangnan water town - Gaochun County, Nanjing, Jiangsu Province. Gao Song was once appointed as the “Jiangnan Holy Land” by Emperor Qianlong. It is now a national-level ecological demonstration zone. Crab farming has a long history and is well-known. “Gucheng Lake” crab has many reputations for its “high quality and large specifications”: the first crab Chinese famous brand, the first organic crab certificate, the first national-level Yangtze River Chinese mitten crab original farm, the first A national-level river crab ecological breeding standardization demonstration zone; in 2003, it ranked first in the Shanghai national quality hairy crab brand competition and won the “Golden Crab Star”; in 2006, it won the “Top China Agricultural Product Brand Conference” Top Ten Agricultural Products; 2008 In the second “Bumper Cup” national river crab competition held in Shanghai, it won the gold medal, the best taste award, and the title of crab king. “Gucheng Lake” crab, huge individual, full of cream, delicious taste, is safe and secure. Fine dining. Pingu City Lake Crab is really enjoyable.

Quality technical requirements (a) source. Eriocheir sinensis H. Milne-Eswards in the Yangtze River system. (2) Breeding environment. Gucheng Lake and the waters connected to it, the aquaculture water environment meets the requirements of GB11607-1989 Fisheries Water Quality Standard, pH 7.5 to 9.0, transparency 40cm to 50cm, dissolved oxygen 5mg/L or more. (3) Parents. Breeding crabs are derived from the national crab farms. They are strong and energetic, with strong appendages and no disease. The females weigh more than 110g/we and the males weigh more than 150g. (4) Seeds. The color is normal, the specifications are neat, the body is strong, the reaction is quick, the appendage is complete, and there is no disease and no injury. The large-eyed larvae used for crab breeding are the original species of crabs provided by the national-level Gucheng Lake Eriocheir sinensis original breeding ground, and the crab seedlings cultivated by the coastal pond nursery field soil pond ecological breeding method are not used during the whole cultivation process. Antibiotics and other banned drugs and compounds prescribed by the state; specifications of 140,000 / kg to 160,000 / kg; crab species for commercial crab farming, specifications from 100 / kg to 200 / kg. (5) Adult crab culture. 1. Requirements for raising crabs: The water source is the same water source, the same, and flowing living water of Gucheng Lake. The crab-growing area is surrounded by the crab-raising area, and the “well”-shaped ditch is to be dug in an area of ​​more than 2 hectares. Anti-flight facilities are built around the breeding area. 2. Disinfection: Disinfect small water bodies with quicklime or bleach. 3. Environmental requirements: Start planting or planting water plants in March. Planted submerged plants can be separated by mesh to protect the water from germination. The transplanted area of ​​aquatic plants does not exceed 70% of the total area of ​​cultivation. Before the Ching Ming Festival, more than 4,500 kilograms of live snails were released per hectare. 4. Crab stocking: The crab species are stocked before the end of March, with a specification of 100 to 200/kg and a stocking density of 4,500 to 9,000 per hectare. It is strictly forbidden to release precocious crab species. The same culture area should be stocked with the same specifications and the same batch of seed. At the same time, raise appropriate amount of squid, green shrimp and so on. 5. Feeding of bait: Plant bait is bean cake, corn, wheat, pumpkin, various water plants, etc. Animal bait is small fish, snails, river otters, and the like. The growth of the crab was measured every 20 to 30 days, and the amount of the feed was adjusted according to the measurement results. The daily feeding amount is about 1% of the weight of the crab from March to April; from 5% to 8% from May to July; and from 10% to more than from August to October. The daily feeding amount is 30% in the morning and 70% in the evening. 6. Water quality regulation: Maintain water level of 0.3 to 0.6 meters before the beginning of May, maintain water level of 0.8 to 1 meter before the beginning of July, and maintain water level of 1.5 meters after the first ten days of July. The lime is applied once every 2 weeks, and the amount of quicklime is 10 to 15 g/m2, and the whole area is splashed after the chemical pulp. Use a substrate improver regularly. Antibiotics and other prohibited drugs prescribed by the state are not used in the eco-culture process. 7. Harvesting: Harvesting begins in mid-September. The main cage is captured by the cage, and the light trapping is supplemented by other methods. (6) Quality characteristics. 1. Sensory features: (1) Shape characteristics: Crab body can be divided into head and chest, abdomen. A tough carapace is placed on the top of the head and chest, and the top is a breastplate, usually in dark green and cyan. Below is the plastron, grayish white, 5 pairs of chest feet, stretching on both sides of the head and chest, symmetrical. The front edge of the chest breast is straight, with 4 front teeth, large concave in the middle, showing "U" shape, 4 side teeth on the left and right sides, visible on the 4th side, central bulge on the back, uneven surface, frontal angle There are 6 obvious condyles on the back. There is a concave ventral sulcus in the center of the ventral surface, and there are fluff in the peripheral edge. Dioecious. The female crab has a round belly and the male crab is a triangle, commonly known as the umbilicus and the umbilicus. (2) Body shape and body color: the head breastplate is obviously raised, the carapace is hard and smooth, the green back is white belly, the back is cyan, blue-gray, the abdomen is white, milky white and other natural luster; the golden claw yellow hair, the cheek foot and the foot and foot The edges are golden, golden yellow fluff, and the foot and knuckles are slender and golden yellow. The silk is clear, clean, free of foreign matter and odor. (3) Physical vitality: The crab body is thick, lively and powerful, and the reaction is quick, the double chelation is strong, and the eight feet are complete. (4) Taste: The cream is full, the meat is tender, and the taste is sweet and slightly sweet. 2. Grade classification: grade classification weight (g/only) male crab female crab grade ≥250≥200 level ≥200≥1503. Physical and chemical indicators: (1) female crab: fatness ≥0.51g/cm3, gonad weight ≥ 9.5%, moisture ≤ 58%, crude protein ≥ 18.5%, crude fat ≥ 9.5%. (2) Male crab: fullness 0.61g/cm3, gonads ≥3%, moisture ≤69.5%, crude protein ≥15.5%, crude fat ≥9%.

Apply to：
The export enterprises within the protection scope of the Gucheng Lake crab geographical indication products may apply to the Nanjing Entry-Exit Inspection and Quarantine Bureau for the use of the “Special Mark for Geographical Indication Products”; other producers within the scope of protection may submit to the Quality and Technical Supervision of Gaochun County, Jiangsu Province. The application for the use of the \"Special Mark for Geographical Indication Products\" is approved by the AQSIQ.