Agriculture Idol

Chapter 147
After circling around the rocky mountain, they didn't even see an octopus, let alone find octopus eggs.

It was not until Professor Yang continued to carefully analyze the captured underwater images that everyone understood why the octopus did not lay eggs in the crevices of the rocky mountain.

The breeding terrain that octopuses like is very particular. It is in the shape of a bottle. The most important thing is that there needs to be a narrow entrance, and the interior has to be exactly the size of an octopus.

On the rocky mountain, the gaps between the rock layers are open and interconnected.

[In other words, it must be a completely single room]

[The life of an octopus feels more picky and delicate than mine...]

Many netizens feel that they have eaten lemons.

In the octopus's reproduction steps, the female octopus must first find a space that meets the requirements, and then the male octopus will come to "confess". If the female octopus agrees to the male octopus's courtship, the female octopus will lay eggs in the nest, and then the female octopus will lay eggs in the nest. For a month, they take care of these fertilized eggs in the nest without eating or drinking until the baby octopuses hatch.

Therefore, once the breeding space does not meet the requirements, the female octopus cannot completely guarantee that the octopus eggs will not be attacked by foreign enemies, and thus refuse to lay eggs.

In theory, Zhangba Island should have a lot of space suitable for octopus to lay eggs.

"Those spaces suitable for octopus spawning are not on rocky mountains, but on the seabed." Professor Yang said.

"You mean the sand under the sea?" Li Chengxin asked.

"Yes," Professor Yang nodded, "Just remove the upper layer of sand, and you will understand."

The diving students who were still active in the water brushed away the sand and gravel on the bottom of the sea according to the words, and only about half a centimeter below it turned out to be rocks.

"Sure enough, the caves suitable for octopus spawning are all buried by sand." Professor Yang confirmed his inference.

Judging from the film and television materials a few years ago, there was not so much sand and gravel in the outer bay of Zhangba Island at that time, and it was easy to find a cave suitable for an octopus to breed on the rocky reef below the rocky mountain.

But now, looking around, this is just a sandy land, and not a single cave can be seen.

Professor Yang handed over the work of finding the cause to his students, and the students formed teams according to their own guesses and began to investigate separately.

I thought it was due to geological reasons, so I planned to let the resort's diving instructors escort me and go into the water for surveying, mapping and sampling.But before that, I have to go to school to find some students and teachers from other majors for help, and to rent some other surveying and mapping devices.

If you think it is caused by ocean currents, you need to go to the Fisheries Bureau to apply for the ocean current path maps in recent years, or you may need to go to the county or provincial library to check the information.

I think it is due to man-made reasons, so the scope of the query may be wider, and we need to visit various places in the nearby sea areas.

After the tasks and group assignments were completed, Professor Yang saw that Li Chengxin and Zhou Hao looked a little unhappy, so he asked casually, "Are you two tired, do you want to go to rest earlier?"

Li Chengxin shook his head, and asked vaguely: "Is it possible that this is caused by the coast of my house and the artificial beach of Zhou Hao's resort?"

Li Chengxin himself was a little skeptical. In addition, netizens also commented on this suspicion during the live broadcast.If it turned out that the octopus breeding ground crisis was caused by the loss of gravel from the two artificial beaches, wouldn't he and Zhou Hao be the sinners of the nearby fishery and the environment.

Professor Yang was taken aback for a moment, and then burst out laughing: "How is it possible! You are thinking too much!"

There are two reasons why this matter has nothing to do with Li Chengxin and Zhou Hao.

The most obvious evidence is the extent of sea sand coverage.

These sea sands cover the entire outer bay of Zhangba Island, while the inner bay of Zhangba Island is still the original rocky beach.If the sea sand was really swept by the ocean current from the two artificial beaches, the inner bay of Zhangba Island would inevitably be covered by sea sand first.

Just a few days ago, the underwater robot explored the depths of Li Chengxin's experimental coast in the inner bay of Zhangba Island, where the original exposed rocks were still there.

Also.

"How much sand are there in your two artificial beaches?" Professor Yang asked.

Li Chengxin was not in the village all year round, so Zhou Hao was basically in charge of renting the sand boat.

Zhou Hao calculated in his mind that since this area of ​​​​the sea is relatively shallow, he rented the smallest sand transport ship. The sand transport ship was fully loaded with sand twice and would replenish it every year after typhoons.

"Counting the two beaches, there are probably more than 100 to less than [-] tons of sand."

Professor Yang casually ordered a student: "Come and count for them how much sea sand is below here."

被点到的学生熟练地掏出手机打开计算器：“水沙的密度为1.65～1.70g/cm3，海砂至少要2-2.3左右……这片被海砂覆盖的面积怎么也有上百平方公里，换算过来的话，至少也该要1000万吨的海砂。”

After coming to this conclusion, Li Chengxin stroked his chest and breathed a sigh of relief: "Then this is definitely not my fault."

He turned his head and chattered to the live broadcast camera again: "How can you netizens doubt me, I am so professional..."

Netizens: [Hehe, who was the one who was anxious just now? 】

A week later, the conclusions of the students' conclusions were announced. After analyzing the data that a bunch of netizens didn't understand, Li Chengxin helped them summarize it in vernacular.

This is because of the typhoon last year.

Due to the intensification of climate change in recent years, even the rules of typhoons have changed a lot. Last year, large typhoons moved from south to north. In previous years, there were only one or two typhoons affecting Zhangba Island every year. Last year, there were 16 typhoons. The typhoon affected Johachi Island.

Among them, typhoon No. 146 was a super typhoon at the end of October last year. It is said to be the strongest typhoon in history that passed through the vicinity of Zhangba Island. Seconds, the wave exceeds 10 meters.

Seawater poured into the film and television city and the streets of the town, and even many fixed fishing boats in the town were washed ashore and stranded, and sand and soil were all over the streets and alleys.On the contrary, Hongming Village was hardly affected by the disaster. The students speculated that it was because Zhangba Island was blocked in front of Hongming Village just like this year's typhoon.

Li Chengxin realized the power of the clay statue of Hongming village that was restored and placed in the ancestral hall.

After this investigation, it was discovered that after the typhoon, not only the land was affected, but in the sea, at least [-] tons of sea sand was rolled up, burying the octopus' favorite spawning ground in this sea area up.

[I didn't expect the typhoon to have such a big impact on the sea]

[It’s been almost a year, nature is really scary, God is doing well! 】

[I have been wronged, let me apologize first...]

During the investigation, the students of the diving team also took pictures of octopus activities in the water.

It was an octopus with pale color similar to sea sand on the bottom of the sea, and it was "walking" on the bottom of the sea with its eight legs.

"Probably came to find a spawning site." Everyone judged.

It’s the season for octopus to spawn, but they can’t spawn because they can’t find a spawning place. If things go on like this, octopuses will have to spawn in places that are easy to be attacked by natural enemies. In this way, the octopus production in the nearby sea area will still increase sharply. reduce.

Therefore, Professor Yang gave the task of finding solutions to the students.

"It's absolutely impossible to clean up all the sand, so let's think of another way."

The students talked a lot and went to check the information.

(End of this chapter)