Dafeng sea seaweed farming area of ​​more than 100,000 acres. As the area of ​​seaweed cultivation expands year by year and the output increases year by year, Dafeng City has established the largest seaweed nursery base in Asia, with an internationally advanced seaweed processing line, and the seaweed processing industry has advanced by leaps and bounds. To protect the unique quality of "Dafeng Dongsha Laver" due to its unique growth environment.

Dafeng Dongsha seaweed quality technical requirements First, the source of Porphyra yezoensis (Porpphyra yezoensis). Second, the culture environment is fresh, non-polluting, in line with the national fishery water quality standards, the water flow is smooth, the salinity is 25 g / kg to 30 g / kg, the pH value is 7.4 to 7.8, the sea water flow rate is 0.2 m / s to 0.3 m / s, the transparency of seawater is 1m to 1.5m, and the total nitrogen content of seawater is ≥200mg/m3. Third, aquaculture management 1. Cultivation methods: (1) semi-floating squat. (2) Fully floating squat cultivation. 2. Seedling: From late April to mid-September, the matured vegetables of the laver leaves are placed in a container containing dark sedimentation seawater, and the spores are released and attached to the clam shell to enter the indoor seedling. 3. Miao net cultivation: From mid-late September to early November, the maturity of the shell spores is collected on the laver net curtain, and the truss is hanged to the sea, allowing it to naturally germinate and release the single spore. From mid-October to mid-November, the seedling nets are sent to the freezer for freezing. From mid-November to early December, it is a breeding stage. 4. Harvesting: From the beginning of December to the middle and late April of the next year, when the algae body grows to 15cm to 20cm, it can be harvested once, and after harvesting, it will be 7cm to 8cm, which can be harvested in the whole production year. 5 to 6 times. Fourth, processing 1. Processing flow: washing → chopping → pouring cake → dehydration → drying, peeling vegetables → classification → drying again → packaging. 2. until. %. (3) Classification: The classification room has a room temperature of 20 ° C to 25 ° C and a relative humidity of 40% to 65%. Every hundred sheets are packed in cardboard and then placed in a dry drawer. V. Quality Features 1. Sensory Features: This product is dark brown, bright and lustrous, uniform in thickness, free of dead spots, chrysanthemum spots, dead spots, delicious flavor and excellent flexibility. 2. Physical and chemical indicators: water ≤ 7g / 100g, protein ≥ 40g / 100g, calcium ≥ 145mg / 100g, zinc ≥ 2mg / 100g. 3. Safety and other quality technical requirements: Product safety and other quality technical requirements must comply with relevant national regulations.

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Producers within the production area of ​​Dafeng Dongsha Seaweed may submit an application for the use of “Special Marks for Geographical Indication Products” to the Quality and Technical Supervision Bureau of Dafeng City, Jiangsu Province, which shall be reviewed by the Jiangsu Provincial Bureau of Quality and Technical Supervision and submitted to the General Administration of Quality Supervision, Inspection and Quarantine for approval. announcement.