So he smiled and said: "Then let's learn from each other."

Zhou Mindong came to pick up Wang Yi with two key members, one of whom was named Ye Yaqiu. He shook hands with Wang Yi and said with a smile: "We learn from each other, but the main thing is that we learn from you, Teacher Wang."

Another cadre named Wang Shiquan said: "Teacher Wang is educated and capable. I must trouble you today to provide some advice on our commune, team, enterprise and production system."

Wang Yi waved his hand: "You're welcome, you're welcome."

As a result, they were rude...

The Blue Water Commune welcomed his visit this time because there were really some problems that needed him to solve.

Of course, the first thing to do is to visit and study.

They entered the breeding base, where the flow was smooth and technicians were conducting investigations.

Zhou Mindong introduced to Wang Yi: "This is a data survey to check the salinity, pH and dissolved oxygen capacity of the water. For raising this shrimp, the most suitable salinity is between 21 and 30 parts per thousand, and the pH is between 7.5 and 7.5.

8.5, dissolved oxygen is more than 5 mg/L..."

Zhou Dayuan took out a notebook and recorded it seriously, while Wang Yi asked what to record? I have a voice recorder with me!

Today’s seawater is clean, and shrimp ponds do not consider the concentration of heavy metals and other harmful substances, because the water they use is live seawater, and there is no heavy metal pollution problem.

The substrate of the shrimp pond is sediment, and Zhou Mindong said that they spent a month adding sediment themselves.

Each shrimp pond seems to have taken advantage of the geographical advantages of Noodle Island, but in fact there have been some modifications.

"First we build a breeding pond in an area with smooth flood drainage, and then there is an inlet gate and a drainage gate at both ends of the pond. The gates are made of cement boards and have a relatively strong pressure-bearing capacity..."

Each shrimp pond is rectangular, with an area ranging from twenty to forty acres.

Last year, the area of ​​their shrimp pond for breeding was 40 acres, and the benefits were considerable. So this year, the scale was expanded to 100 acres.

The breeding ponds here have been artificially modified. The depth of the pond water is maintained at two meters to five meters. Each shrimp pond has deep and shallow depths. The shallows in the pond are used for breeding feed, and the deep depths are for Penaeus monodon to hide.

Zhou Dayuan looked at the shrimp pond and asked: "According to the information we found, the optimal survival depth of Penaeus monodon is about 20 meters, right? Isn't this too shallow for you?"

Ye Yaqiu said with a smile: "It's actually a bit shallow, which causes the water temperature to rise too quickly in summer, and another sunlight penetrates the sea water to reach the bottom of the pool. As a result, the shrimps grow very slowly in midsummer and are easy to die."

"But we can't help it. If the pond is too deep, there will be too many problems, such as fishing, diving and inspection, etc. Anyway, we can make a living at this depth."

Wang Yi nodded.

This is one of the reasons why he chose to culture shrimps in cages, which can penetrate deeper into the sea water.

The water level of four to five meters was chosen for the shrimp pond on Noodle Island because of considerations such as dredging and cleaning up harmful organisms.

Zhou Mindong introduced that in marine aquaculture, attention should be paid to the sanitary conditions of the breeding area. This is a big problem. Once problems occur, it will often cause huge losses.

Therefore, every time the shrimps are harvested, the sluice gates must be opened for desilting.

This requires seawater to wash away the organic matter sediments in the pool and the silt in the ditch for several days, and then the pool water is drained, the gate is closed, and the bottom of the pool is exposed to the sun to further oxidize and decompose the remaining organic matter.

He also introduced.

Blue Water Commune did not choose to raise shrimps entirely on its own. The coastal areas of Guangdong and Guangdong have already taken the lead in raising shrimps.

Among them, Zhou Mindong went to study in person. The scale of breeding there is larger and the breeding technology is advanced.

Let’s talk about dredging. In order to promote the decomposition of materials at the bottom, large state-owned breeding ponds in Guangdong use tractors to plow the bottom of the pond.

There is too much organic matter at the bottom of some pools, which cannot be decomposed by sunlight exposure and sea breeze. So they organize manpower and use mud suction pumps to move the sediment out of the pool.

Another one is the removal of algae and harmful organisms.

There are many Cladophora and Enteromorpha in Fuhai. After these things breed, they reproduce very quickly. They will occupy the activity space of the shrimp, and even entangle the shrimp seedlings, causing the death of the shrimp seedlings. They also absorb a large amount of nutrients in the water and hinder the reproduction of feed organisms.

Moreover, because the water is too clear and the light in the pool is too strong, it hinders the normal activities and feeding of the shrimp, and it is also not conducive for the shrimp to avoid predation by water birds. Especially when the conditions are not suitable, a large number of algae will die, destroying the water quality, and causing the death of a large number of shrimps.

There is no skill involved in this treatment method. It relies on technicians holding tools to clean it up.

Ye Yaqiu said: "Just like farmers weeding, we do it regularly."

After hearing the introduction, Wang Yi couldn't help but sigh: "It's very troublesome to raise prawns."

Zhou Mindong and the other three nodded.

It's really troublesome.

This work generally consists of these steps.

Clean the breeding pond first, then add water and fertilize two or three days after cleaning the pond. This is called cultivating basic bait.

How to deal with it? Generally, nitrogen fertilizer, phosphate fertilizer and organic fertilizer are put into the sea water.

Organic fertilizers include chicken manure and human manure, but care must be taken to eliminate sterilization and parasites, and must be dried in the sun.

After cultivating the basic bait, you can put in the shrimp seedlings. After putting in the shrimp seedlings, you can put in the feed. After putting in the feed, you should also pay attention to the management of water quality.

At the same time, sample shrimps must be caught every day to observe whether they are infected with shrimp diseases. In this regard, Zhou Mindong prepared a "Shrimp Farming Technology Encyclopedia" for Wang Yi, which is a technical guide book just published by the Agricultural Press this year.

Wang Yi is concerned about the situation of shrimp seedlings, and they need to purchase shrimp seedlings.

Fortunately, the shrimp pond on Noodle Island has a seed shrimp breeding pond.

It is not easy to cultivate prawn seed shrimp. It goes through multiple stages from the egg stage to juvenile shrimp: nauplii, daphniform larvae, mysis larvae, larvae, etc.

Wang Yi proposed the idea of ​​purchasing shrimp seedlings, and Zhou Mindong said boldly: "There is no problem, Lao Ye, you are responsible for selecting the young shrimps for Teacher Wang and his unit."

Ye Yaqiu said: "Don't worry, I will definitely choose good shrimps with sound limbs, clean shrimp bodies and no debris attached. The abdominal limbs are not long enough, the tail fan is not big enough, and the vitality is not strong enough. I will never give it to Teacher Wang!"

"

Wang Yi was extremely grateful and bowed repeatedly with his hands clasped in fists.

Noodles Island was really nice to them, very loyal, and told them some precautions for shrimp farming:

"There are particular things to do when raising seedlings. This has a lot to do with the weather. The temperature is high and it is not suitable to raise seedlings after heavy rain. It is best to release seedlings when the weather is sunny and warm. It is more suitable to release seedlings at 7 or 8 o'clock in the morning or in the evening."

Wang Yi said to Zhou Dayuan: "Hurry up and write it down. These are all experiences worth a thousand dollars."

Zhou Mindong smiled politely and said: "I learned this from others, not from our own experience."

"But we also have some experience ourselves." Ye Yaqiu said, "For example, when the shrimp seedlings are released into the shrimp pond, 100 shrimp seedlings need to be taken out and put into cages in the pond to raise them for a few days."

"What is this for? It is to calculate the survival rate, which can be used as a reference to infer the survival rate of shrimp seedlings in the pond. If the shrimp seedlings are lost a lot, they need to be replanted."

Wang Shiquan said: "This is really our experience of blood and tears. We could have harvested better last year. The breeding pond was used for the first time because there were fewer bacteria in it, the environment was good, and the general breeding effect was good."

“But our shrimp seedlings suffered severe damage, resulting in a sharp drop in the production of adult shrimp and a sharp drop in efficiency!”

Zhou Dayuan asked: "What about shrimp diseases? Have you encountered any shrimp diseases during your breeding process?"

Wang Shiquan said: "It is inevitable that in fish and shrimp farming, on such a large scale, there will inevitably be diseased bodies. As long as they are cleaned up in time, it will be fine."

"But sometimes if they are not discovered in time, they will become infected with infectious diseases and spread, so they need to be treated."

"The most common infectious diseases are black gill disease and black shell disease..."

They have photos in their hands that were taken last year after encountering a shrimp infectious disease, and then mailed them to experts to seek treatment help.

Black gill disease is the most common. In the early stages of this disease, the shrimp gills will appear orange and bright brown. Later, the gills will gradually darken and finally turn black. They can be treated with nystatin.

Black shell disease is characterized by black ulcers on shrimp shells, causing shell damage and subsequent death of the shrimp.

Ye Yaqiu said that 1 ppm of oxytetracycline and chloramphenicol can be mixed into the feed and fed, and the treatment effect is very good.

Wang Shiquan added: "By the way, you have to pay attention to an abnormal shelling problem. A large number of prawns shell at night, but some will die if they do not shell successfully, and then quickly pollute the water quality."

"So you have to stay on duty at night during the shrimp shelling period to catch the floating dead shrimp and the shells of the shrimp in a timely manner."

"The vitality of shrimps is quite tenacious," Zhou Mindong said. "As long as they are raised properly, there will generally be no problems when they shed their shells."

"As long as we treat the water quality well, change the seawater in time, and add oxygen to the seawater during the shelling period, we can ensure the success rate of shrimp shelling."

These people were very enthusiastic and really showed their support to Wang Yi.

But their enthusiasm is not in vain. They still ask Wang Yi for help, which is about a series of problems encountered in the development of communes, teams and enterprises.

After their visit to several shrimp ponds on Noodle Island, Zhou Mindong led them into the office to have tea and rest.

During this period, Zhou Mindong mentioned the new policy of three fixed prizes and two prizes currently implemented in Tianya Island.

This new policy guaranteed the labor enthusiasm of cooperative members and was the masterpiece of Wang Xianghong and Wang Dongxi.

However, in order to gain prestige for Wang Yi, Wang Xianghong would say that this was Wang Yi's idea when the outside team mentioned the policy of three awards and two awards when they went to Tianya Island to visit and study.

Lanshui Commune took it seriously, so Wang Yi came today. They had several issues related to people's livelihood policies and the development of commune, team and enterprise, and they wanted his help to solve them.

Of course Zhou Mindong also said: "The main thing is to listen to Teacher Wang's opinion. As the saying goes, listening to both will lead to enlightenment, and listening to one side will lead to darkness. We want to widely solicit opinions from capable people."

Wang Yi felt a little cramped in her calf after hearing this.

Maybe it's because he's been a bit too indulgent recently and he needs calcium supplements.

Or maybe he was feeling guilty.

Without waiting for him to be polite, the cadres of Lanshui Commune introduced to him the problems encountered by their commune and commune team enterprises:

"Teacher Wang, that's right. Our Fuhai is a poor sea. There are few offshore resources. Moreover, there are more motorized boats and the fishing is powerful, so there are even fewer."

"In order to solve the livelihood problem of fishermen, our commune party committee proposed a development policy called 'Build big ships and sail out' to develop offshore resources."

Zhou Mindong asked Wang Yi: "What do you think of this strategy?"
To be continued...