Every fishing boat returned with a full load, and it was the representatives of investment institutions who were most excited.

Saying a thousand things and ten thousand is not as convincing as a real harvest catch. After Jiagu Marine Ranch showed great investment value, the representatives of various investment institutions were a little unable to resist their impulse.

Chen Jian lowered his head and thought about it, suddenly thought of something like an expression, shook his head, and asked: "Just go down the net, there are so many fish, and in such a large sea area, there are no fishermen to steal fish?"

As he could see, there were big fish of great value in one net, and how could he expect the nearby fishermen to be tempted in the slightest?

Qi Zheng and Chen Zhenian glanced at each other, and Chen Zhenian smiled: "First of all, let's make it clear that it's really not like you can have such a harvest just by going down the net. ”

"But if you go down the net, you'll be better off than in other seas, that's right. ”

That's for sure, Chen Zhenian nodded slightly: "You're right, in fact, there are indeed fishermen who have broken into our marine ranch to steal. ”

One of the reasons why few people are willing to engage in private marine ranches is that construction is difficult and easy to destroy.

The rancher has worked hard to invest in fish fry, seaweed, and feed, and people just come to steal it, and in the end it is just to make wedding clothes for others.

"How does Nagargu protect the marine ranch?" asked more than one person with concern.

"Well, we're doing it both ways. Chen Zhenian laughed and said: "First, the environmental monitoring system of the marine ranch has an early warning function, which can detect the intruding fishing boats in time and notify them to drive them away......

With the reputation of the Jiagu Marine Ranch for high-quality catches, there were many pirate boats in this area.

After all, the sea is different from the land, it is accessible in all directions, and the pirate boat does not need to stay at sea for too long, as long as you quickly get off the net and do a vote or two before leaving, the high-quality catch of the Jiagu Marine Ranch may be more than the harvest of a day or two in other seas.

I don't really care about the slightest bit of stolen fish, but if the fish thieves are allowed to eat the sweetness, then this place will definitely become a "den of thieves".

As Chen Zhennian said, the ranch has such a large sea area, and the ranch management cannot respond quickly at any time. But in addition to the protection measures of the marine ranch itself, let's not forget that Jiagu also has a strong market power.

If you want to sell high-quality fish at a high price, buyers come and go, mainly in high-end restaurants. However, today, the coverage of Jiagu's agricultural supply chain is almost unimaginable to outsiders. With the largest supply of high-quality ingredients in China, almost all high-end restaurants in China are directly or indirectly involved in the supply chain of Jiagu's agricultural products.

Most of the high-quality ingredients of the Kagu series have distinctive characteristics, and those who can eat them will know it as soon as they eat it. With such a wide chain of relationships, there are more "eyes and ears" than fish thieves can imagine. If you steal one or two votes, it's fine, if you treat Jiagu Marine Ranch as a fat sheep and keep picking wool, Jiagu's "anti-counterfeiting" team is almost accurate when it comes to cracking down on fish thieves.

After catching one and ending one by one, after a year or two, the fishermen who understood that they could no longer please the fishermen who "grabbed food" in Jiagu's mouth, almost walked around Jiagu Marine Ranch after going to sea.

Chen Jian: "......"

Well, it's almost a means that outsiders can't replicate. It's good to say that the product has more distinctive characteristics, but no one is willing to spend a lot of money to build a professional "anti-counterfeiting" team like Jiagu.

However, considering that after so many years, in the mixed industry of agriculture, Jiagu's brand reputation has not been ruined, which is probably worth it.

Chen Jian laughed and said, "In other words, the fishermen can only take advantage of the fish that escaped from the marine ranch?"

Chen Zhenian shrugged his shoulders and said lightly: "This is not easy to get cheap, in fact, there are very few fish schools that take the initiative to leave the marine ranch, on the contrary, there are many fish schools that have gathered, which can also be seen from the catch." Hairtail and mackerel are not stocked by us, but they have become one of the main catches of the pasture. ”

These words made Chen Jian's hearts sway even more.

What is one of the big concerns about investing in the construction of marine ranches? That is, although theoretically, with marine ranches, we can gather all kinds of fish in the ocean in specific sea areas, just like driving herds of cattle and sheep to graze on the vast grasslands, and use advanced technology and management methods to allow the fish to live and breed in the marine ranches without worry.

But in reality, the marine environment is more complex than the terrestrial environment. It is difficult to say that the vast and boundless sea area of Jiagu Marine Ranch is simply not "fenced", and it is really difficult to say how much fishery resources can be "retained" by this "fish in and fish out".

This is probably one of the main reasons why most of the production capacity in marine aquaculture is shellfish. After all, shellfish don't "run away" with the currents, but saltwater fish really "don't agree" and start running.

These days, following the expert assessment team, Chen Jian is not ignorant of theory.

They have learned that an important factor in establishing a marine ranch is based on the memory of the fish.

How long does a fish have a memory, the scientific community has always debated, one theory is between 3 seconds and 7 seconds, the other is between 3 and 5 months, all in all, fish have a very limited memory. Memory is limited, but it is conditioned – when humans create an environment for them to live in, the fish will automatically swim back to the area set by humans in the boundless sea water with their memories.

For example, the Japanese and Korean marine ranches use "sound" to train the memory conditioning of fish. That is, to find out the "sound that specific fish like to hear", research and development of an acoustic feeding buoy system, that is, an acoustic feeding machine. At the same time as the target fish is baited, it sends a sound into the sea, so that the fish can learn to lure the sound in the water. This type of training is usually carried out by placing the fish in a cage with a certain space, observing the condition of the fish until the conditioned reflex of the fish to the "sound signal-bait supply" appears, and then the fish are released into the sea......

In the final analysis, this is also a kind of fish behavior "domestication". However, the investment in audio acclimation equipment is large, and it is easy to break down or be damaged, so it is doubtful whether it can be used on a large scale, even in Japan and South Korea, it is mainly used as a test.

Jiagu Sea Ranch did not take such a approach.

Kaya's approach may seem the least technical, but it's actually the most technical – creating an absolutely "rich" marine environment.

For example, how many aquatic weeds and seaweeds are grown at Jiagu Marine Ranch?

Artificial reefs and seaweed grasslands are set up to attract marine organisms to attach, from phytoplankton to zooplankton to rapid proliferation, to small shrimp, small fish, and large fish, building up the food chain of marine organisms layer by layer.

Many big fish who "accidentally" broke into Jiagu Marine Ranch took a look and found that there was so much delicious food here.

If there weren't enough aquatic weeds, seaweeds, and even small fish and shrimp, they would have been starving for a long time, and would they still be so nourishing?

This kind of conditional launch based on survival memory is even more indelible, so to speak, even if they run away, they are reluctant to leave this "rich land".

The accumulation of marine biological resources is not achieved overnight, but the marine ranch after the completion of resource aggregation is enough to make people jealous.

In the words of the assessment experts, in the field of international marine ranching, it has been debated for many years whether the increase in biomass in artificial reef areas attracts aggregation or breeding, but in the case of Jiagu Marine Ranch, it is safe to say that attracting aggregated biomass is definitely one of the main forces of biomass increase.

Chen Jian almost didn't have two eyes and said: "You don't need to invest any resources, it all depends on the superior environment to attract nature, this is simply a cornucopia like a bug." ”

Other investment representatives were equally envious and eager to gaze.

Qi Zheng heard it, shook his head and said: "You can't say that, if you don't invest resources at all, it will only have the effect of fishing with all your might, killing chickens and taking eggs, and there are many underwater 'kung fu' that you haven't seen for the time being!"

Chen Jian is not a professional, and it is easy to ignore a problem: there are too many aquatic plants and seaweeds that grow and reproduce too quickly, and they also have to draw a large amount of nutrients from the seawater, which contain trace elements that have been mixed with the sediment on the seabed for thousands of years.

Of course, the nutrients in the seabed sediment are not only output but not input, and the fecal excrement of fish and shrimp contains rich organic matter and inorganic salts, which is a high-quality nutrient for the seabed sediment to supplement various elements.

The question is, how much can fish and shrimp excrete in the process of growing a catty? Is it possible to compensate for the consumption of nutrients in the seabed geological environment due to the wild growth of aquatic weeds and seaweed?

In general, if you rely on natural replenishment, marine ranches that are constantly fishing are essentially consuming resources, and one day natural replenishment will not be able to keep up with consumption.

So, counting on a "cornucopia" once and for all is a ridiculous idea.

Academician Zhou paced over and agreed with Qi Zheng's words: "Qi Dong is right, the construction and maintenance of marine ranches cannot be opportunistic, and this must be done in a down-to-earth manner." Do you think that the ocean does not need to be 'fertilized'? No, after all, it is the same as arable land, if you only cultivate and do not fertilize, the soil will become barren even if it is fertilized......

Academician Zhou is very aware of this. An important task for the team was to test and monitor the mud and rock formations on the seabed of the marine ranch, mainly to check whether the trace element levels on the seabed were lower than normal.

Who made the aquatic weeds and seaweeds in Jiagu Marine Ranch grow so crazy? Especially the giant algae jungle, anyone who saw it was shocked!

To this end, the team also developed a "seabed fertilization" scheme, in which a special boat with a large number of long pipes dragged from the bottom of the boat, the ends of which are open anchors, and the sharp anchor-like equipment is inserted into the sediment while working, and special nutrients containing minerals are fed down the pipe to the seabed.

The evaluation panel was interested in this option, but debated how much of a role it would play in the nutrient balance of marine ranching, or how practical it would be.

According to the information submitted by Jiagu, the amount of "fertilizer" used to "fertilize" the seabed through this scheme is actually not large, and compared with the vigorous productivity of marine ranches, this "amount of fertilizer" can only be said to be a slight supplement.

Whenever he hears such a discussion, Qi Zheng can only smile and hide his merit and fame.

In fact, at the beginning, he did not expect that the effect of "cheating" in marine production would far exceed that of continental production.

But with a deeper understanding of the ocean, it seems inevitable.

Because the physical conditions of the ocean's surface are particularly suitable for all kinds of life. As a result, marine life, mainly phytoplankton, will develop rapidly until one of the key nutrients in the water is exhausted.

Life is inseparable from water, sunlight and the right temperature, but it is also inseparable from some key nutrients such as nitrogen, phosphorus, potassium, iron, calcium, etc. The reason why most of the sea is "barren" is that the material and energy conditions are not complete. That is, the surface layer is mainly limited by nutrients, and the lower layer is limited by light, resulting in low primary productivity.

On land, the limiting factors are more water and temperature, although the nutrients may be insufficient, but the flow of surface water, dust, etc., is enough to ensure that all nutrients are supplied to a certain extent. Coupled with the ecological balance, the nutrients are finally returned to the soil and reused, so they can be accumulated and recycled.

In the ocean, homogenization, stratification, the upper and lower layers generally do not flow and exchange, a large part of the excrement or carcasses of marine organisms will be deposited directly on the seabed, and some substances, such as phosphorus, are easily combined with metal oxides on the seabed, and it is difficult to add them to the circulation. As a result, the surface water is deficient in nutrients to sustain the most basic phytoplankton, making it an underwater desert.

So there is a saying that deserts and oceans are two extremes of ecological unsustainability, one is short of water and the other is short of nutrients.

As long as one or two key nutrients are replenished (iron and phosphorus are usually deficient in the ocean), the ecological potential of the ocean is enormous. A typical example is volcanic ash - volcanic ash is relatively elemental, so once a volcanic eruption, it will generally cause a large explosion of life in the surrounding sea. For example, a volcanic eruption in Alaska's Aleutian Islands in '08 sowed a large amount of volcanic ash in the nutrient-deficient Northeast Pacific Ocean, causing the population of migratory sockeye salmon in a river in the Gulf of Alaska to soar 20-fold two years later.

Of course, Jiagu Marine Ranch does not expect "volcanic eruptions" to "replenish fertilizer", but some people are hanging.

-- The spirit array that can "drain", combined with ecological projects such as the construction of artificial reefs, brings the bottom sea water and sedimented nutrients to the near surface, and under photosynthesis, phytoplankton grows in large quantities, and the amount of zooplankton also increases significantly, thereby luring the aggregation of predatory fish and forming a rich "natural fishing ground".

——The spiritual array that can "gather soil" completes the key nutrients for the marine ranch. To put it bluntly, although it is a "predatory" transfer, the vast and boundless sea has so many nutrient elements that have been deposited on the seabed that it is better to properly add them to the material cycle than to deposit them for thousands of years.

——The spirit array that can "promote life" is even more remarkable. Probably because many plankton are unicellular organisms, with simple structures and much faster growth rates than land plants. For example, the "marine jungle", which is dominated by seaweed that has no real roots, stems, and leaves, is planted at a much faster rate than terrestrial forests at the same intensity of the spiritual array.

So, with the blessing of a certain hanging, Jiagu Marine Ranch is like the Alaskan sea after a volcanic eruption, which produces a great explosion of life!

The productivity of the sea area is an evaluation index that the expert evaluation team attaches great importance to, to what extent is the productivity of Jiagu Marine Ranch bursting?

As Chen Zhenian said to the experts: "We all know that seedling production is the foundation and important guarantee for the construction of marine ranches. Only large-scale seedlings can ensure the formation of marine ranch resources; only multi-species seedlings can make the varieties released into marine ranches diverse; and only high-quality seedlings can ensure the survival rate of release. ”

"The seedling replenishment of our pasture is mainly produced by two methods: natural seedling harvesting and artificial cultivation. However, if artificial seedlings are directly put into the natural sea area, the mortality rate of seedlings is higher due to different environments and the ability of seedlings to bait is not strong. Therefore, before release, the pasture will go through a series of trainings to make the seedlings able to survive in their natural state in terms of size, health, and feeding ability. Who knows, after the completion of the 'intermediate rearing' link, we found that the productivity of the pasture has exploded, and the pasture has become too crowded by stocking the juveniles and attracting the wild fish that have gathered in the past......"

"Therefore, it is really not that we in Jiagu blindly expand the marine ranch, but if we do not expand the marine ranch for 'drainage', the fish farm of Jiagu agriculture and animal husbandry will be crowded, and it is too wasteful of resources. ”

Listen, isn't this angry?

Anyway, most of the marine experts re-examined Katani with the expression of looking at Superman.

Compared with Academician Zhou's team's accustomed to shock, other newcomers faced the shock as entry-level players.

In the past, they regarded Jiagu as a representative of terrestrial production, and when they saw it enter the marine production, they all revealed the inherent prejudice of "sea" against "land".

INTERVIEWER The marine environment is too complex, how can it be compared to a relatively stable terrestrial environment?

- Ocean production is too complex, can it be compared to relatively stable land-based production?

When they arrive at the Kagaku Sea Ranch and dive into their research, they realize that they are really wrong.

There are some hangings, the record on land is very strong, and the record on the sea is also against the sky.

Admitting that it is not comfortable to sit in a well and watch the sky, but your skills are not as good as others, and you have to bow your head when it is time to bow your head.

I prepared a stomach of persuasion, but before I started, I didn't need it...... Looking at the confident expressions of Jiagu people and the bursting productivity of Jiagu Marine Ranch, many experts inexplicably feel that they are outdated.

After all, despite the proximity of the ocean to human beings, in fact, human beings have studied the ocean less than they have studied space.

In the case of the deep ocean, there are many things that we cannot explore, and we have studied the ocean less than 5%.

Taking Jiagu Marine Ranch as an example, it is not an easy task to set up artificial reefs. The same type of artificial reef can vary greatly depending on the location.

also listened to the discussion of experts, Chen Jian and other investment representatives also changed some of their minds - marine ranching, it's really not something you can play with money. Without such a "hanging" cooperation as Jiagu, you can't find a way to get started.

It should be said that the representatives of investment institutions did not chase Qi Zheng's ass to invest, which is already the result of their suppressed impulse.

However, seeing that Jiagu occupies the absolute initiative, the only thing that can keep them from pounced like flies smelling meat is the natural awe of risk among investors.

......