The sea area of Jiagu No. 2 Fishing Ground is light and comfortable, but the shouts one after another break the tranquility of this sea area.

In the surrounding waters, cranes from several large transport vessels drop artificial reefs into the sea. The artificial reefs are combined algae reefs and artificial reefs, which not only provide attachment for the growth of seaweed, but also provide multi-storey housing for fish on the seabed, which is the "first pile" laid by the construction of Jiagu No. 2 fishing ground.

"Xiaoguan, Xiaoguan, how many reef bodies have we put into place today?" asked Captain Ma, the person in charge of the Jiagu reef release project, on one of the transport ships of the team leader.

"Boss, a total of 1,340 artificial reefs were put into the reef today. Xiao Guan, who was in charge of deploying the artificial reef, quickly replied.

Captain Ma spread out the drawings and said silently: "Today, the reef area will be built with an area of 2,000 acres, well, at least 12 combined reef groups need to be built, and then 1,000 artificial reefs need to be put into ......."

He looked at the time again and was extremely satisfied: "Today's progress is good. Let's work hard, finish it early, and let the canteen add food to everyone tonight!"

There was a burst of cheers from the ship.

Xiao Guan also smiled and said: "Boss, don't worry, the weather is good today, the wind is calm, and it is not a problem to finish work early." ”

Captain Ma grunted and poured a stomach of water, patted his belly, and said, "That's good! Remember to urge everyone, the big boss is staring at it from the side, do a good job, don't worry about welfare." ”

When Xiao Guan heard this, he gossiped and said: "Boss, is it really effective to put artificial reefs on a large scale like this?

Xiaoguan was a fisherman in Lu Province before, and after Jiagu Agriculture and Animal Husbandry circled the No. 2 fishing farm, he recruited a group of employees, and Xiaoguan was among them.

He is no stranger to artificial reefs. Since 05, Lu Province has implemented an action plan for the restoration of fishery resources, while promoting the enhancement and release of fish and the construction of artificial reefs, and he has also participated in the government's action to release various reefs in the offshore area.

But...... It is said that it is "restoring fishery resources", but for so many years, we have not seen a fundamental improvement in the ecological environment of the sea area. Therefore, Xiaoguan has always felt that putting artificial reefs to build marine ranches is "flashy".

It is also because of the delay in the improvement of offshore fishery resources, Xiaoguan has been planning the transformation, and just happened to meet Jiagu agriculture and animal husbandry to recruit fishermen, so he chose to join Jiagu at the first time.

Unexpectedly, the so-called construction of "marine ranching" in Jiagu is not focused on releasing fish fry to raise fish, but also on artificial reefs.

What surprised him even more was that the big boss of the group, a billionaire, actually stationed in the "base" in person?

- After all, it is far away from the mainland coast, and even the necessary supplies of fresh water and fresh vegetables have to be transported and replenished over long distances, which is easily affected by time and weather, and in any way is not a comfortable living condition.

Regarding Xiao Guan's question, Captain Ma smiled: "You will know after working in Jiagu for a long time that the big boss of our group does not like to sit in the office, but is a first-line base, and he can often be seen." ”

"As for whether the effect of putting artificial reefs is good...... he changed the topic: "Xiaoguan, why don't you continue to be a fisherman?"

Xiao Guan pouted: "Now there is no fishing in the coastal waters, and if there is no fish, you will lose money when you go to sea." The fishing moratorium was only a few days long, but it was over in a blink of an eye. What do you think is the point of being a fisherman?"

Only a place where there is a fishing flood is called a fishing ground, but now a search on the Internet is full of news such as "the six major fishing floods in the South China Sea have basically disappeared" and "the Bohai Sea is on the verge of a 'dead sea' state: the fishing flood has basically disappeared", which is enough to see that, at least from the perspective of fishery resources, the domestic coastal waters have been completely developed.

When Koseki first heard about the depletion of offshore fisheries, he thought "why not develop distant-water fisheries?" After all, the idea of a "newcomer" is always good, how big the ocean is, and most of it is on the high seas. Build bigger boats and keep catching fish from the ocean back to China, what are you afraid of the depletion of fishery resources?

However, reality proves its ignorance. Not everywhere there is seawater there are fish worth catching. In fact, 90 per cent of the world's catch comes from offshore continental shelves at depths of less than 200 metres. In the middle of the vast Pacific, Atlantic and Indian Oceans, due to nutrient deficiencies, they are actually "marine deserts", and only a few high-value fish such as tuna are worth consuming a lot of diesel to fish.

"Therefore, it is not possible to rely on the sea and the ocean, and our company believes that the foundation of our fishery is in the Yellow Sea and the East China Sea...... From the perspective of fishery resources, no amount of the Pacific Ocean is worth the East China Sea. ”

Captain Ma said seriously: "Boy, do you think we are just putting artificial reefs? No, we are increasing the carrying capacity of this sea area and making it produce more protein!"

......

A coastal stream of the Yellow Sea flows southward along the peninsula of Lu Province. In the vicinity of the city of Hizhao, a tributary flows eastward.

It carries excess nutrients such as nitrogen and phosphorus discharged into the sea by humans, and in the process of eastward flow, some heavy metals and other polluting elements gradually precipitate, and selectively "self-purify" until it meets the cold water mass of the Yellow Sea in the waters of Jiagu No. 2 Fishing Ground.

"Bibo Qinghua Array (Fourth Order) triggered, main wood water system, range: a radius of 1,000 kilometers. Effect: Clear water, drainage. It can make the spring water clean and drain the water. ”

The undercurrent of tributaries, the increase in nutrient input, and the warm and cold environment have caused the seaweed and other marine ecosystem grassroots organisms to grow explosively, and some schools of fish chasing bait have also brought to the Jiagu No. 2 fishing ground, which is becoming more and more lively day by day.

But at this time, Professor Dong's team, which was focusing on the growth of the first batch of 30,000 salmon, did not have time to pay attention to the major changes in the fishing grounds.

The cold water mass in the Yellow Sea can theoretically be used to cultivate salmon, but in order to actually implement it, especially when the practical experience in deep-sea aquaculture is basically zero, the team can only grope forward step by step.

The backward level of deep-sea aquaculture equipment has brought a lot of challenges to Professor Dong's team. For example, if the cold water mass is below sea level, the cage needs to be constantly adjusted to the depth of the open sea according to the change of water temperature, and before the development of a fully submersible deep-sea cage that can automatically control the rise and fall of the fishery according to the water temperature, it can only be adjusted by crude artifice.

"I have enough confidence in the research and development of 'hardware', and it is only a matter of time before I independently develop a complete set of deep-sea aquaculture equipment. But in terms of 'software', it is uncontrollable whether the squeamish salmon can adapt to the breeding environment of the cold water mass in the Yellow Sea......" Professor Dong said to Qi Zheng, who was idle after the first batch of salmon was put into the cage.

Qi Zheng thought in his heart - tsk, familiar operation. Researchers are like this, before pulling funds, they show that they are confident...... Once the funding is secured, it will be time to talk about the risks and "take preventive shots".

But he could understand it. In fact, to date, many people in the industry have had reservations about whether the Yellow Sea cold water group can successfully farm salmon – how can we make a breakthrough if salmon farming in temperate waters has no precedent for success in the world?

So Qi Zheng said calmly: "I understand, as the first wave of testing, twists and turns are inevitable. ”

"Ahem, I mean, as long as the mortality rate of the first salmon stays below 50%, it's perfect. Professor Dong coughed lightly and added.

In fact, he was mentally prepared for the "annihilation of the whole army". However, it would be too faceless to report to the "gold owner" in this way, so I still try to evaluate it as well as possible. This is still in the early stage of ruling out major disturbances such as natural disasters.

Qi Zheng, who didn't feel relieved: "......"

Alas, if you say that, brother, I'm afraid I'm going to "disappoint" you.

In addition to the standard configuration of the fishing ground, the "shark repellent" - "needle falling in the dust array" and the "wind repellent" - "Tiangang Wuji Array", based on the particularity of the cold water mass in the Yellow Sea, Qi Zheng also arranged the "frost withering autumn array".

Summer is the peak of the cold water mass in the Yellow Sea, and its entrenched areas form a cyclonic density circulation, which also means that the temperature is not very stable. If it is a large enclosed farm, it is not a big problem, but for salmon that are facing cold water for the first time, it is "cloudy and uncertain".

But with the escort of the "frost withering autumn formation", the cold water mass of Jiagu Fishery has become "docile".

In addition, although the "green bamboo lark array" mainly acts on the bottom of the food chain such as seaweed and Pacific krill, it also indirectly provides salmon with extraordinary environmental purification capabilities.

Not long after, Professor Dong, who was prepared for the annihilation of the first wave of salmon, suddenly found that after the mortality rate rose to 26%, there were no more dead fish - the remaining salmon seemed to be stable?

The wood is disturbed by turbulent ocean currents, the wood is infested with sharks, and the wood has severe lesions...... It's like just an ordinary animal migration, after weeding out a group of weak individuals, the rest of the group comes to a new continent, shouting "Hi ho".

Professor Dong felt as if there was something beyond his comprehension.

You know, he went to Norway, a strong country in salmon farming, to "steal teachers", so he knows that the salmon that has always been tall has a harsh growth environment beyond the imagination of ordinary people - a large number of salmon are crowded with each other, full of ulcers, parasitic fish lice, and even grow "deformed fish".

Even Norway, which claims to have the clearest Atlantic ecology in the world, has a mortality rate of about 20% for salmon in a cage.

In fact, the salmon farming industry in Norway has been controversial on this point. Large-scale salmon farming, long-term feeding of feed, drugs and the deposition of fish feces have led to the proliferation of sea lice and the destruction of the marine ecological environment.

But these are in the Jiagu No. 2 fishing ground...... None of them!

As a simple example, salmon imported from Norway has been detected with parasites many times, but salmon raised at Jiagu Fishery has been tested for parasites many times...... Keep it to zero!

If it weren't for the environment, Professor Dong would have felt blind.

When he looked back, he realized that at some point, the Jiagu No. 2 Fishing Ground had become vibrant.

Fluid seawater, kelp that grows dozens of centimeters a day, and Pacific krill that appear everywhere...... Mom, how did Jiagu do it?

Although the cold-water salmon farming seems to have gotten off to an incredibly smooth start, Professor Dong inexplicably has a faint sadness.

- Although there is no evidence, I don't think it's my credit.

......