Golden Fishing Village

Chapter 793 797. Governance (15)

The wind blew the lake surface, turning it green.

Unlike natural green, when blue algae appear in large numbers, the water surface is covered with thick algae, and endless small algae gather together, which looks disgusting.

And when the wind blows the lake surface and creates waves, the blue algae floats from south to north and accumulates on the lakeside like a layer of green putty powder, carrying a smell that makes people feel uncomfortable.

It can be said that natural green is dollar bill green and aqua green is head green, giving people completely different feelings.

Ao Muyang felt that this thing had nothing to do with Wangjia Village. The algae bloom was a natural disaster. Although the occurrence was violent this time, the main reason was that the water body of Ambergris Lake was rich in nutrients, causing cyanobacteria to explode as soon as they overproduced.

Ao Mudong didn't see it that way. He said: "Longtou, I'm telling you that someone is definitely causing trouble. Think about it, this lake was just contracted by you, and something like this happened. It hasn't happened in the past ten or twenty years. I don’t believe that no one is a demon in this kind of water bloom.”

"No one needs to be a demon, and no one can be a demon. There is poisonous fish meal, but there is no algae enriched powder." A voice sounded, and Ao Muyang turned around, but it was Su Penghui coming.

Su Penghui looked at the lake, with a relaxed expression on his face: "This is the early stage of the bloom, and it's not serious yet. However, there are many fish, shrimps, and crabs in your lake, so we need to deal with it quickly."

Cyanobacteria are food for fish, shrimps and crabs, but they are also killers. Collar algae among them can quickly produce lethal factors, destroy the gill tissue of fish, interfere with their normal metabolism, paralyze nerves, and cause death.

In addition, some species of cyanobacteria are not only poisonous in living bodies, but also produce biotoxins - cyanotoxins, microcystins, etc. - when dead individuals decompose. When the amount of these toxins is large, they can directly cause the poisoning and death of cultured objects, or they can harm the cultured objects through the accumulation effect in the food chain, and even harm the human body.

What Ao Muyang is afraid of is their consumption of oxygen and blocking of sunlight. If there is not enough sunlight to shine into the lake to allow the vegetation in the lake to carry out photosynthesis and release water-soluble oxygen, then the Yexian crab, pearl clam, and All kinds of fish get problems.

Su Penghui is worthy of being a relevant expert. He quickly formulated a treatment plan: "First of all, Xiao Ao, please quickly contact the silver carp and bighead carp fry and put them into the lake. Silver carp and bighead carp like to eat blue algae, so they can kill two birds with one stone. Let them eliminate the blue algae and feed the big fish."

Ao Mudong scratched his head and said, "Is it too late to just cram for a while? How many days will it take for the fry to eat these things?"

Su Penghui smiled and said: "Yes, that's why I said 'first of all', this is a natural method of prevention and control. The green tide phenomenon is mainly prevention. It is reproducible. Raising more silver carp and bighead carp is for the future."

Ao Muyang waved to Ao Mudong and said, "Brother Dong, don't interrupt. Let Teacher Su say, you go contact the fish fry. I remember that there is a state-owned fish fry farm in the county. Is it not closed down?"

"No, but Longtou, what are you going to do if you don't interrupt these big men when they are together?" Ao Mudong said with a playful smile.

"Since when has Mala next door been talking nonsense to me?" Ao Muyang got angry for a moment and kicked him on the butt and kicked him into the lake.

Ao Mudong screamed all the way and braked suddenly, almost falling into the lake and getting covered in blue algae.

Su Penghui added: "Secondly, you need to buy Bacillus alginolyticus and Bacillus lateralis, and sprinkle about one pound per acre of water. These are microbial preparations and do not have such a big impact on the environment."

Ao Muyang asked: "Should we turn on the aerator? I'm afraid that the fish, shrimps and crabs in the lake will die from lack of oxygen."

Su Penghui smiled and said: "The fish, shrimps and crabs in the lake are considered wild, and they are not so delicate."

Ao Muyang explained: "I have seen reports about this thing before, always saying that it will cause losses to freshwater aquaculture, so I am afraid."

Su Pengyu nodded and said: "Yes, they are indeed easy to cause hypoxia for aquatic organisms, but that means that in the cultured state, the density of artificial breeding is high, and the density of fish, shrimps and crabs in wild lakes is reasonable, they will actively surface or be polluted by algae blooms. Life in the less powerful waters is not a big problem anyway.”

Next, there are other methods, such as balancing the ratio of nitrogen and phosphorus. He asked Ao Muyang to buy water-soluble inorganic phosphorus to change the ratio of nitrogen and phosphorus in Ambergris Lake and accelerate the cultivation of beneficial algae such as green algae and diatoms to quickly grow into dominant algae. species to inhibit the growth of cyanobacteria, thereby improving the situation of excessive cyanobacterial reproduction.

After proposing a series of measures, he said with emotion: "Now the global greenhouse effect and weather problems are becoming more serious. The air temperature and water temperature are a bit high. If it exceeds 25 degrees, the growth rate of cyanobacteria will be much faster than other algae. I have to follow the fishery Let’s talk to the bureau and ask them to issue a high water temperature warning to prevent other farmers from suffering losses.”

Ao Muyang smiled bitterly and said: "Hurry up, our Ambergris Lake has provided everyone with a vivid example."

From the end of May to the beginning of June, Longtou Village revolves around Ambergris Lake.

All boating activities on the lake have been stopped. How can we proceed like this?

However, the boats couldn't be idle, so Su Penghui arranged for the big guys to use small-eye fishing nets to drag cyanobacteria on the lake, collect all the cyanobacteria, and transport them to the garbage ship.

This is a temporary solution rather than a permanent solution, but it is a very temporary solution. Hundreds of boats and rafts used plowing trawling operations. After three or two times, the lake surface became clear again.

On Children's Day, June 1st, even primary school children came to help. Of course, Ao Muyang gave a reward. Children who helped collect blue algae could each receive a fifty yuan shopping reward.

Children can go to the small supermarket in Ao Mu City to buy things, as long as the amount is within 50 yuan, the village will pay.

For a while, the lake was busy. Ao Muyang felt that this green tide did not cause a big disaster, but increased the cohesion of the village.

Ao Wenchang also had this view. He wrote a calligraphy called "Many difficulties make the country prosperous" and hung it in the village committee. Old man Ao Zhiming thought it was unlucky and took it home to make a table mat...

Longxiang Lake cannot receive tourists for the time being, so the tourists in the village spent more time on the sea.

In order to express apologies to tourists who came to the village but experienced the algal bloom incident, and to express gratitude to parents who brought their children to travel on Children's Day, many marine activities in the three days of early June were free or half-price, such as half-price boat space for whale watching, free fish for feeding whales, and free tickets for Ming Dynasty warships.

Du Tanzhi, who came to the village to check the progress of the resort renovation, read the notice and said happily: "Old Ao, you are really a clever guy, and you have a good way to do tourism business."

Ao Muyang smiled helplessly and said: "Just be willing to bear the loss, what kind of good method is this?"

The ocean resort outside the village has been renovated, and small wooden houses stand along the beach. Some have small swimming pools that lead directly to the ocean, and some have offshore platforms between them, giving off the flavor of a fisherman's home.