The big yellow croaker of "Sakano" is a raising professor to realize the "yellow croaker dream" in Zhoushan

Zhejiang News Client reporter Zheng Yuandan correspondent Chen Zenghui

Gui Fukun

Professor of Zhejiang Ocean University and Deputy Director of the National Marine Facilities Faciliation Engineering Technology Research Center.

Related studies have been engaged in marine facilities breeding and fish behavioral dynamics. The industry is called the "wild yellow croaker" of the East China Sea.

Near the islands and reefs in the southern part of Taohua Island, Putuo District, Zhoushan City, tens of thousands of big yellow croakers were cultivated in a bay surrounded by net clothes. This is the wild breeding base of Taohua Island fence. According to the main indicators detection and comparative analysis, the quality of the big yellow croakers cultivated here is very close to wild big yellow croakers.

This sea area has a tide direction and ecological environment similar to the deep sea. The area of ​​the waters of the circle is 150 acres, and the breeding water body with more than 600,000 cubic meters. It can store up to 300,000 high -quality big yellow croaker in one year. Model demonstration area for high -end wild farming.

These are all related to him -Gui Fukun, a professor at Zhejiang Ocean University and deputy director of the National Marine Facilities Faciliation Engineering Technology Research Center. Guifu Kun, 47, is a native of Jiangxi, a post -doctoral of Zhejiang University, and a member of the Democratic League. He has long been engaged in related research on marine facilities breeding and fish behavioral dynamics. People in the industry call him a pioneer of "wild yellow croaker" in the East China Sea.

High -quality high -end road

Speaking of the fate with Zhoushan, Guifu Kun was at a graduate student at Dalian University of Science and Technology. Due to the research research, he came to Zhoushan and rejoiced. He graduated from a PhD in 2006. He had a chance to stay at school. He resolutely chose to come to Zhoushan and serve as the Zhejiang Ocean Academy at the time.

"Zhoushan people are enthusiastic, and this city can realize my 'yellow croaker dream'." Guifu Kun said.

In 2009, Guifu Kun went to study in Norway for a year. Norway is known as the "country of Wanjima". The coastline is long and twists and turns, and there are many coastal islands. It is the birthplace of the world's HDPE (high -density polyethylene) deep -water cage. During his studies, Guifu Kun often went in -depth production to investigate the local cage breeding industry. In Norwegian, Gui Fukun was deeply touched. He made up his mind to show his punch in the maritime breeding field in China after returning to China.

After returning to China in 2010, Guifu Kun began a wide range of investigations and in -depth analysis of China's big yellow croaker breeding industry.

Zhoushan has the largest fishing ground in China, with rich fishery resources. Big yellow croakers were once the most famous economic fish in Zhoushan. Due to excessive fishing and environmental pollution, in the 1980s, big yellow croaker resources began to decrease sharply, and wild big yellow croakers were almost extinct. As a result, artificial breeding big yellow croakers gradually emerged. Since the early 1990s, the artificial breeding of big yellow croakers has made breakthroughs and developed rapidly. At present, the yield is ranked first in Chinese marine breeding fish. However, Guifu Kun found that the breeding industry of the big yellow croaker industry faces the pain points of the breeding environment, frequent illness, and low benefits.

"At that time, the breeding model was mainly farming on the shore cage, and the scope of big yellow croakers was limited. It was prone to the phenomenon of 'bloated and obesity', and it was difficult to guarantee quality." Guifu Kun said that the market price of the big yellow croaker breeding near the shore cage at that time was every time at that time every time the market price was every time. The catty is only 20 or 30 yuan, and the wild big yellow croaker is more than 1,000 yuan per catty, and the supply is in short supply.

"The difference between the economic benefits of the two is really too big." While deeply worried about the development of the breeding industry of the big yellow croaker, Gui Fukun also keenly saw the future way: take the road of high quality and high -end, and by shaping wild wildness through shaping wildness, wildly shaping wild -ended wildness The growth environment, breeding wild yellow croakers, making its quality close to wild big yellow croakers.

Zhoushan Taohua Island Big Yellow Cascurry Ecological Base Barry Base

Conquest with yellow croaker overwintering problems

Beginning in 2012, Guifu Kun led the technical team to conduct research around the marine fence breeding project.

The fence breeding engineering refers to a method of breeding large -scale waters in the shallow waters of water in the shallow waters with engineering facilities such as net clothes, pillars, and rope chains. The characteristics are an innovative marine breeding model for high -quality and ecological wild breeding.

There is no theory. In 2015, Guifu Kun transformed the technical achievements of the fence farming engineering, and was applied to Zhoushan Taohua Island for application.

The first thing to solve is the wintering problem of big yellow croakers. Guifu Kun checked a large amount of literature and found that the naturally growing big yellow croaker has the characteristics of travel. In winter, the temperature of the seawater decreases. Big yellow croaker generally swims south or east into the deep water area. The water temperature is stopped at 12 ° C, and it will die as below 8 ° C. The low temperature in the seas of Zhoushan has reached 6 ° C, and the wintering of the big yellow croakers is facing huge challenges.

What are the conditions for big yellow croaker to overwinter? Is it feasible to carry out ecological wild breeding in Zhoushan? Guifu Kun's team found through experimental research on the relationship between the swimming ability of big yellow croakers and the water temperature. When the temperature was low, the swimming ability of the big yellow croaker decreased and even lost the swimming ability. At this time, it was difficult for them to resist the impact of water flow. "Fish may be hit by the water flow, and died of hypoxia or collision with each other." Guifu Kun said.

In 2016, Guifu Kun pushed 20,000 big yellow croakers in the sea of ​​sea, and conducted long -term tracking monitoring. In winter, the lowest water temperature of the breeding base is 8 ° C. Gui Fukun and the technical team to reduce the impact of water flow on big yellow croaker by building an artificial slow current area. In addition, they also increased feeding to store fat reserve energy for big yellow croakers to enhance their swimming ability at low temperatures.

After a year of experiment, the Guifu Kun team received the gratifying results: feeding and feeding normal, and the big yellow croaker successfully overwinked. In 2017, the upper price of the big yellow croaker breeding of the fence exceeded 300 yuan per catty. In the face of a series of happy data data, Guifu Kun was relieved: "Successful wintering is a very critical technical challenge to breeding of big yellow fish fences, and finally passes through this level."

Subsequently, the Gui Fukun team broke through the technologies such as automatic feeding, efficient hierarchical arrest, fish group intelligent inspections, and automatic cleaning of net clothes. Essence

In 2018, Guifu Kun's "Industrialization Application of Large High -end Ecological Pymarking Engineering Technology Industrialization" project was selected into the "5313" action planning science and technology entrepreneurial talent special recommendation project in the "5313" action plan of Zhejiang Zhoushan Islands New Area. In 2020, the wild breeding base of the Taohua Island fence was rated as the provincial green breeding base.

Run wheels can be sold all year round

Since the successful and wild breeding base of the big yellow croaker at the Peach Blossom Island fence in 2016, in July 2021, the base successfully launched 100,000 rhubarb fish fry, and for the first time in Zhoushan City, it realized the breeding of the big yellow croaker wheels.

"This time, we have mastered the key technologies of the wheel ramp, and the wild breeding of the fence has gradually entered the stable operation stage." Gui Fukun said, "Through cyclical supplementary seedlings, you use New Year's breeding to achieve perennial sales of perennial sales. , Meet the people's demand for high -quality big yellow croakers throughout the year. "

Today, the big yellow croakers of the Wild Barry Base of Taohua Island Farfish are exported to Beijing, Tianjin, Xi'an and other places, and the market price is 100 yuan to 500 yuan per catty. The achievements of the scientific and technological achievements of the rhubarb are successfully transformed in Taohua Island, with an annual output value of more than 20 million yuan, and provided a lot of jobs for local fishermen.

Guifu Kun's fence farming technology has been promoted to Wenzhou, Taizhou, and even all over the country, but in his opinion, wild yellow croaker breeding can also be in sustainable breeding capacity, in -situ breeding technology, high -end market cultivation, intelligent management, etc. Further breakthrough.

Gui Fukun told reporters that at present, he is studying the "Yuguang complementarity" deep sea breeding platform project. The platform is relatively far offshore. Pointing bait can achieve long -range all -intelligent operations, and the arrest is more efficient. "And the breeding platform can also supply photovoltaic power," Guifu Kun said. In the future, he also looks forward to continuous innovation of full -chain in terms of seedling, breeding process, and breeding environment.

A big yellow croaker made Guifu Kun and the island, and also made him deeply fall in love with the blue sea of ​​Zhoushan. As a member of the Democratic League, he also led the Zhejiang University General Branch Alliance members to carry out precise social services on Taohua Island to help increasing the income of island residents on Taohua Island.

When it comes to the development vision, Gui Fukun listed a data: 2020 The total output of big yellow croakers in the country was 254,000 tons, ranking first in Chinese marine breeding fish. Enjoy a high popularity. "I hope our wild yellow fish fence farming technology can become a model project, leading the innovation and development of marine fish breeding industry in Zhoushan and even the country."

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