Speaking of seafood, many people may think that this is a specialty of coastal cities. But recently, Xinjiang, which is located inland and is called "the farthest place from the sea", has ushered in a bumper harvest of "seafood. Many people have questions: inland there is no "sea", how to raise "seafood"? The answer points to a key word-"seafood land" mode.

What is the "seafood" model?

The "seafood farming" model refers to the creation of an ecological environment similar to the ocean on land, and the artificial cultivation of fish, shrimps, crabs, shellfish and other seafood. There are many ways to create an ecological environment similar to the ocean.First, the use of "shrimp light" approach.In a Penaeus vannamei breeding base in Aksu City, Xinjiang, it has reached the harvest season of Penaeus vannamei.Zhou Jingsen, head of the breeding base, said that there are two ponds in the breeding base covering an area of 16 mu. The water is snow water from Tianshan Mountain. Shrimp seedlings are imported from Hainan. The breeding method is "shrimp farming lightly".
"Shrimp light breeding" refers to the shrimp in fresh water culture, the biggest technical difficulty is to let the shrimp adapt to the fresh water environment in Xinjiang. So, how to make shrimp adapt to the freshwater environment? Zhou Jingsen introduced three steps:

• The key to the first step is the desalination pool.This is an independent pool, and the water in this pool should be adjusted to a water environment close to sea water. After the shrimp seedlings are introduced, they are placed in this pool for breeding.

• The second step is to add water desalination.Starting from the second day when the shrimp fry enters the pond, the fresh water from Aksu, Xinjiang, is added to the desalination pond regularly and quantitatively every day to gradually reduce the salinity of the water in the pond so that the shrimp fry can adapt to the local environment.
• The third step is to change the pool.After adding fresh water every day for seven to ten days to make the water environment in the desalination tank similar to that in the pond, the shrimp can be put into the pond for cultivation.

Zhou Jingsen said that the general Penaeus vannamei adapt to the water temperature of about 25 degrees Celsius, if the water temperature is lower than 18 degrees Celsius, it is not suitable for the growth of shrimp, "the desalination process is over, after the shrimp seedlings into the pond, we have to monitor the temperature of the pond, dissolved oxygen, pH, ammonia nitrogen and nitrite water environment every day. This year, the expected yield per mu can reach 400 kilograms."Second, the clever use of resources to "make the sea", the salt water into "artificial seawater".The Red Flag Farm of the third Division of the Xinjiang production and Construction Corps is located in the eastern part of the Pamir Plateau. Due to the low-lying terrain, the surrounding underground saline-alkali water is gathered here, the groundwater level is relatively high, and the water quality contains a large amount of saline-alkali, and the pH value is generally above 8. A large amount of saline-alkali water can not be recycled by agriculture and other industries, which has an adverse impact on local soil and crop production. According to local conditions, find a way out from the existing resources, make use of the advantages of existing saline-alkali water resources, and explore an industrial development road suitable for farm saline-alkali water quality breeding.

△ Fish Pond on Saline-alkali Land in Xinjiang

In a saline-alkali intelligent ecological mariculture base in Hongqi Farm, staff are busy salvaging, packing and shipping local "seafood".
Staff said, "Here is rich in saline water resources, we will be the local saline water into a closer to the natural sea water 'artificial sea', to simulate the marine environment. More than 50 tons of 'seafood, 'which is expected to be concentrated on the market in September, have all been booked out." In an aquaculture base in Ordos, Inner Mongolia, a batch of Penaeus vannamei will also be listed in the near future. It is worth mentioning that the base area is saline. In order to turn saline-alkali land into treasure, technicians set up greenhouses according to local conditions, adjust the water for shrimp seedlings, and overcome the adverse effects of high salinity and high cold on breeding.
The salt-alkali flats, which used to be barren, are now able to produce fresh aquatic products.

Why take the "seafood land" model?

First of all, the adoption of the "seafood land" model enriches people's dining tables and also provides high-quality and inexpensive products.Recently, Australian freshwater lobsters farmed in Maigaiti County, Xinjiang have been on the market one after another. The lobsters here are large and thick, tender and smooth, and taste fresh and sweet. The person in charge of the breeding base said that lobster has sold nearly 500 kilograms since it went on the market in September.
The owner of a local seafood restaurant said: "Since the start of Australian freshwater lobster farming in Megaiti County, we have no longer purchased from other places. While saving costs, the quality has also been guaranteed." The variety of "land-raised seafood" in Wuhan, Hubei is increasing, and the output is also increasing. Today, Hubei Province has realized the "seafood land breeding" of eel, Penaeus vannamei, grouper and other products. The quality and production capacity have been improved, making people's dining tables full of flavor.

Zhang Meilian, the owner of a seafood shop in Wuhan, sold grouper made in Wuhan for the first time this year. She was satisfied with the quality and price. "The price is a little cheaper, and it is two or three yuan cheaper per catty, because the transportation distance is closer and fresher."
Secondly, the "seafood land raising" mode is adopted to provide a feasible scheme for solving the problem of saline-alkali land governance in China.
The soil in saline-alkali land has heavy salt accumulation and cannot be cultivated. By adopting the "seafood land cultivation" model, these lands can be reused. Some people may ask: will the seafood raised in saline water be delicious? In the ecological intelligent constant temperature breeding base of Hongqi Farm of the Third Division of Xinjiang Production and Construction Corps, the circular fish ponds are respectively cultured in the South American white shrimp, sea bass, grouper and so on. The relevant person in charge, "Saline-alkali water-raised shrimp has a unique flavor, a particularly good taste, and the meat is fresh and sweet without losing the elasticity of freshwater shrimp. Last year's fish and shrimp will take a few more months to go on sale, but now many customers have placed orders in advance." According to the Agricultural and Rural Bureau of the Corps, the average annual use of surface saline-alkali water is about 0.1 billion cubic meters, and underground saline-alkali water reserves are about 1.3 trillion cubic meters, which is rich in saline-alkali water resources suitable for fishing. Since 2022, the Corps has set up a special fund of 11 million yuan per year to support the development of saline-alkali fishery in southern Xinjiang. At present, the Agricultural and Rural Bureau of the Corps is preparing the "Salt-alkali Water Fishery Aquaculture Plan for the Southern Xinjiang Division City of the Corps" to vigorously promote the development of salt-alkali water fisheries in southern Xinjiang.Finally, adopting the "seafood land raising" model provides a "road to prosperity" and also promotes local economic development.Recently, a farming cooperative in Zhangye, Gansu Province, ushered in a bumper harvest of Penaeus vannamei. In January this year, the cooperative put in the first batch of shrimp seedlings and adopted the mode of "seafood land raising" to carry out factory farming. According to the person in charge of the cooperative, the cooperative can produce 6 crops of Penaeus vannamei each year, and the output of each crop can reach 20000 catties. "It is mainly sold to Jiayuguan, Zhangye and other places in Gansu. In less than a month, more than 3000 catties of shrimp have been sold out."

In the largest "seafood land breeding" base in Hubei Province, the factory-based seawater recycling breeding model is adopted to realize the market of shrimp throughout the year, and the annual output is expected to reach 1 million jin, and breeding training and shrimp seedling export are carried out for surrounding farmers to promote farmers Increase income. In August this year, the foundation stone was laid for the construction project of Penaeus vannamei culture in Sandaoqiao Town, Hangjinhou Banner, Bayannaoer City, Inner Mongolia. According to the relevant person in charge, after the completion of the project, 0.3 billion south whitening shrimp seedlings will be cultivated annually, with an annual output of 1200 tons of commercial shrimp, and an output value of more than 80 million yuan. The radiation will drive 183 surrounding farmers and effectively utilize nearly 1000 mu of saline-alkali land."Seafood farming" not only provides a feasible solution to solve the problem of saline-alkali land management in my country, but also promotes farmers' income and promotes local economic development. In the future, there will be more and more "seafood" into the daily table of thousands of households.

▌Source: CCTV News WeChat Public Number

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