Agriculture Idol

Chapter 71 Red Tide
Heightened and fixed the surrounding area of ​​the beach, with Brother Xiaoyong as the main labor force, several people began to make floating platforms with bamboo poles.

The area of ​​the floating platform this time is much smaller than that of the sea urchin breeding cage, which is only 2 meters x 2 meters in size. Brother Xiaoyong quickly finished it, and after gaining experience, he made it at a faster speed. several.

These floating platforms are actually the cultivation devices for mussels. The cultivation devices can rise and fall with the rising and falling tides and are not affected by the ebbing tide.

Li Chengxin spread out the broken fishing net he picked up on the coast, poured a mussel on the fishing net that Qi Lanting wanted to roast and eat, then rolled up the mussel with the fishing net and tied it with a rope. .

The mussels were chiseled by Li Chengxin from a rock a little far away in his free time. They were big and small, and they were densely packed into a group, which looked very dense and frightening.

Mussels are dioecious, and during the breeding period of mussels, the male and female can be distinguished by their color: the color of the male mussel is yellow-white, and the color of the female is darker orange-yellow.

During production, both sperm and eggs are discharged directly into the sea water.Individuals raised in the laboratory can make the water in the entire culture tank cloudy when spawning.Eggs encounter sperm in seawater, that is, fertilization and development.After the stage of trochophore larvae and versicolor larvae, it sinks to the bottom of the sea in about 3-4 weeks and crawls with its feet, and then secretes silk to attach to foreign objects, metamorphosis into small mussels, and lives a sessile life.

In a peaceful ocean environment, many green-lipped mussels will attach directly to the shells of their parents and mothers, causing the mussels to grow into dense piles.

"Unexpectedly, it really looks like a huge shi." This was Brother Xiaoyong's comment on the pile of mussels wrapped in fishing nets. "I take back what I said at the time about you not being good at painting."

Li Chengxin did not intend to use single-line floating crane culture to place mussels. Single-line floating crane culture is a one-time operation, but it has the characteristics of high yield, easy management and harvesting, and short breeding cycle. Therefore, it is very popular among mussel farmers. .

But Li Chengxin does not need to harvest mussels, so he chose the method of net bag, which can put down more mussels.

Put the wrapped mussels on the shelf under the growing device, and let Xiaoyong install heavy objects under the growing floating platform to fix the floating platform.Finally, several prepared mussels were raised into the floating platform and pulled to the end of the experimental coast with a small sampan, and the four corners of the floating platform were anchored in the water.

In addition, Li Chengxin saw that there were still some green-mouthed clams left, so he fixed a few packages of green-mouthed clams wrapped in fishing nets on the thin bamboo railings on both sides of the coast.

"Theoretically speaking, in this way, the water in this enclosed coast will become very clean." Li Chengxin judged so.

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In early July, "Lovesickness" starring Qi Lanting and Xiao Yong in a supporting role was finally completed. Li Chengxin followed Yuan Zhao's arrangement and ran for nearly a month to promote the new album. Finally, they all returned to Hongming Village to celebrate. A hard-earned break.

After not coming back for nearly a month, Li Chengxin noticed that the seawater near Hongming Village was much muddier than it was a month ago.Most of the causes of turbid seawater are the massive proliferation of plankton. As the living conditions of urban residents get better and better, a large amount of domestic sewage rich in nitrogen and phosphorus enters the river and eventually becomes nutrients for plankton.

With the arrival of summer, the temperature of the sea water gradually rises. At the same time, due to the arrival of the rainy season, a large amount of river water flows into the bay, which is a good time for the growth of plankton.

Qi Lanting happily continued to occupy Li Chengxin's houseboat and enjoyed the quiet night time.He had previously asked Li Chengxin to analyze various theoretical reasons for sleeping more soundly in a houseboat, but none of them hit the mark.

Li Chengxin felt that there was a metaphysical reason for this, and the key point was the few tiles given by the third uncle when the boathouse was built, which were identified by the system as having the effect of "fixing the storm".

A few people ate and drank in the village for a few days, and didn't spend much money. People in the village often gave them food.Most of them came from Qi Lanting's aunts and grandmothers, a small part came from Lin Yiyi, and some were obtained by themselves from overseas.

In the early morning of this day, Qi Lanting was still playing with his mobile phone on the bed of the boathouse, and Guapi, who had been sleeping downstairs in the boathouse, suddenly barked.

At first Qi Lanting thought it was Li Chengxin who came to call him with breakfast, but when he looked down, it was Uncle Donghai.Qi Lanting has been in the village for so long, and several villagers who are close to Li Chengxin have almost known each other.

"Li Chengxin has been sleeping at Brother Xiaoyong's house recently." Qi Lanting also knew that Uncle Donghai didn't come to look for him.

"I won't go there, Lan Ting, please send a message to Xin Wa'er, telling him that the blood of the Dragon King is coming out of the sea."

Seeing Uncle Donghai's worried expression, Qi Lanting also knew that it seemed to be a big deal, even though he didn't understand "Dragon King's Blood", he immediately sent a message to Li Chengxin.

Li Chengxin immediately replied: "Come right over."

Qi Lanting saw a few villagers who had been soaking in the sea all the year round passing by Li Chengxin downstairs to the beach with ugly faces. Thinking about it, something must have happened, so he quickly changed his clothes and prepared to follow Li Chengxin to watch the fun.

Soon, Li Chengxin and Brother Xiaoyong also arrived. Seeing Qi Lanting waiting for them under the boat house, they waved and they went down to the beach together.

Dragon King's Blood is a common name, but it is actually Red Tide.The formation of red tides has existed since ancient times. However, fishermen at the seaside have always lacked scientific understanding and did not know the cause of red tides. When they saw the sea water turn red and the fish and shrimp died in large numbers, they thought it was the blood from the dragon's injury.

In addition, the current red tide is often caused by the eutrophication of sea water and the explosive reproduction of plankton, but in ancient times, the ocean was lightly polluted, so it is not common.

Red tides mostly occur after natural disasters such as tsunamis and hurricanes. These natural disasters lead to drastic fluctuations in sea water, and a large number of plankton in the sea are enriched, which in turn causes seaweed to multiply.

When ancient fishermen saw red tide, they naturally associated it with natural disasters. They believed that there were evil dragons fighting in the sea, which caused natural disasters. In addition, the result of the struggle was that the evil dragons were injured and bled, and then the dragon's blood stained the sea surface red.

Knowing the formation of the red tide, Li Chengxin hurriedly called Brother Xiaoyong to go to the beach to check. Although the sea outside the village has been deserted, there will always be some fish swimming around with the tide, and sea urchins and other farmed fish have been raised in large quantities in the village. , They either eat seaweed or fish and shrimp. Once a red tide occurs, the impact will be great.

It was said before that the nearby plankton blooms are blooming, and as the plankton blooms become more intense, it becomes a "red tide".Red tides are a common marine ecological phenomenon in which phytoplankton in the ocean become over-pigmented, turning the ocean red.When plankton dies and sinks, it uses the oxygen in the sea as it decomposes.This leads to a shortage of oxygen near the seafloor, causing the organisms to suffocate.In addition, many red tide organisms will secrete red tide toxin, which has a professional name called poison, which is 80 times more toxic than cobra toxin, and 10 times stronger than general anesthetics such as procaine and cocaine.

Common red tide toxins include paralytic shellfish poisoning, diarrhea shellfish poisoning, neurogenic shellfish poisoning, memory loss shellfish poisoning, sika fish poisoning, etc. Among them, paralytic shellfish poisoning is the most widely distributed and most harmful one in the world. Toxoid.

When fish and shellfish are in the area of ​​toxic red tide, they eat these poisonous organisms, although they cannot be poisoned to death, biological toxins can accumulate in the body.In this way, if the poisonous fish, shrimp and shellfish are accidentally eaten by people, dolphins and sea turtles, it is easy to cause poisoning in the body, and even death in severe cases.

Sure enough, Li Chengxin and the others went to the seaside to take a closer look, and found that the surface of the sea was darkly red.

(End of this chapter)