Does windy and rainy weather have an impact on fish farming?

First, the impact of sudden weather changes on the breeding environment.

Sudden weather changes cause a series of water quality changes such as dissolved oxygen, algal phase, and organic suspended solids by causing changes in water temperature and light, which in turn cause stress and physical decline in fish. Water convection and reverse bottom provide a favorable living environment for pathogens, and if the amount of pathogens increases to a certain extent, it will cause disease to farmed fish.

1. The temperature changes greatly.

Fish are ectotherms, and temperature changes directly affect the physiological activities of fish. Abrupt changes in weather can easily cause increased mucus secretion, poor swimming ability, and reduced feeding intake of fish. Algae can also inhibit photosynthesis due to changes in temperature and light.

The temperature stratification of the water body can easily lead to the convection of the upper and lower water layers, and the bottom organic matter and bacterial hypnozoites are suspended in the water.

2. Dissolved oxygen and ΔPH change greatly.

In the absence of mechanical oxygenation, 70-80% of the dissolved oxygen in the fish pond is in the photosynthesis of algae, and the lack of light in rainy weather, the temperature drops, the convection of the water body, and the reverse bottom lead to the decline of algae or vitality, and the dissolved oxygen in the fish pond decreases significantly. In addition, the oxygen consumption of dead algae, organic suspended solids, and bacterial hypnozoites exacerbates the decline of dissolved oxygen, especially at night, and fish respiration and water respiration can cause dissolved oxygen to be below the critical point of fish floating head for a short time. The ΔPH fluctuates due to acidification at the bottom of the pond, reverse bottoming, and algae death, and in severe cases, it exceeds 1.

3. The algae phase is unstable.

Abrupt weather changes are prone to the phenomenon of algae falling, and after natural sedimentation, thin water is formed, and turbid water is formed if it does not settle. Aging algae, partial inversion, and the predominance of cryptoalgae that have a weak demand for light in rainy weather can all make the water body black. The algae phase is unstable, the water body insulation ability is poor, and when the weather is repeated, it is more likely to appear water convection, algae inversion, reverse bottom and other phenomena.

4. The physical and chemical indicators of water quality are abnormal.

The reverse bottom is easy to lead to high nitrite, coupled with the release of hydrogen sulfide and methane, which can easily lead to fish stress or poisoning. Algal mass mortality leads to obstruction of the assimilation channels of the nitrogen cycle, and it is highly susceptible to severe nitrite excesses, especially at night or after the aerator is turned off.

2. Control measures.

The management of fish ponds at the turn of spring and summer is summarized in one sentence: constant oxygen, constant temperature, and anti-stress when the weather changes, and sedimentation, bottom modification, water cultivation, and disinfection on sunny days. All of the following management plans need to be adjusted according to the actual situation of the fish pond, and it is best to carry out it under the guidance of a technician.

1. Before the weather changes, according to the actual situation of the fish pond, you can choose to splash the whole pond with 20-30 kg of quicklime, or mix it with calcium peroxide + coarse salt and throw it in the whole pond;

2. Before the weather changes, if the weather is clear, the bottom can be changed and the water can be cultivated;

3. When the temperature changes abruptly, at least one aerator in the fish pond will be kept open until the changing weather is passed, and the combination of oxygenation + detoxification + anti-stress can be used;

4. After the weather changes, the suspended solids should be settled and disinfected according to the actual situation, and chlorine dioxide can be used for disinfection.

5. Stable feeding, reduce feeding stress, enhance physical fitness through internal administration of multi-vitamin multi-mineral + lactic acid bacteria, and improve the digestion and absorption ability of fish to feed.

Influential. Windy and rainy weather will affect the temperature of the water, which will then affect the oxygen content of the water.

Wind and rain will have little impact on fish farming, because fisheries are farmed in water.

Of course, there is an impact, and this situation can be dangerous, and there may be a lack of oxygen, which can have serious effects.

What are the hazards and prevention of rainstorm temperature on aquatic product breeding, first of all, we must do a good job in flood control, structural reinforcement of pond embankments, do a good job in the drainage system, clean up debris, and do not have to block the drainage system, the cage fish culture structure reinforces the rope and net, and the cage is transferred to the port near the port as much as possible. Do a good job in insect disease control, after the rainstorm, seafood loves to get sick, especially fish species, which are very easy to raw fish subacute gill rot, gill mildew, hemorrhagic disease, etc., immediately disinfect and sterilize, you can use edible salt, and sterilization and disinfectant!

Continuous rainy weather will cause insufficient sunlight, zooplankton will die due to the large change of the water body, which will cause the reduction of photosynthesis, the oxygen content in the water will be greatly reduced, and many water acoustic animals in the water will consume a lot of oxygen, which will lead to the death of many river shrimp. River shrimp will stress the fishing pond in heavy rain, which will lose a lot of kinetic energy, resulting in low immunity, and the growth of bacteria and viruses in the water and itself, which will cause the outbreak of infectious diseases.

The impact of the rainstorm itself and its frightening of the river shrimp will lead to a lot of panic and impact of the microorganisms, which will cause damage to the microorganisms and the human body, and will produce a high incidence of diseases. It will lead to the malignant transformation of the water body, and the amount of dissolved oxygen in the water of the fishing pond will be reduced in the rainstorm weather, resulting in the growth of a large number of germs, and the harm to the water body For the little frog planted by everyone, in fact, there will be a variety of diseases left after the rainstorm. One of the first problems that arises is the problem of damage.

Whether it is in the tadpole stage or the seedling stage, <>

If it is a heavy rainstorm, then the product, which has already taken shape, has already risen three or four taels and will be on sale The equipment will also be damaged in a different situation. In order to solve this kind of disease, it still requires a very careful and long period of management to repair, so the symptoms left after the rainstorm are actually obvious. Therefore, based on this situation, it seems that it is necessary not only to have various rainstorms, but also to be sick.

The impact of heavy rain on aquaculture is very large, and certain protective measures should be taken in advance to avoid this situation, and a film should be wrapped on it.

The impact is still very large; It is necessary to minimize the amount of feeding, reduce the oxygen consumption of pond organic matter, and if different hazards occur, it is necessary to remedy it in time to prevent poisoning.

Rainstorm weather will cause a particularly large difference in water temperature, water quality will also change, so that the biological immunity will decrease, easy to have viral infection, we must do a good job of flood control, strengthen the pond embankment, do a good job of drainage, clean up the debris, strengthen the rope, we must do a good job of preventing diseases and insects, after the rainstorm, aquatic products are easy to get sick, especially fish, to be disinfected in time.

June and July are typical seasons of high temperature and humidity, and the climate change is impermanent.

During this period, there will often be continuous heavy rain, and friends who often pay attention to the weather may know what yellow warnings for heavy rain often appear.

As we all know, the impact of weather is closely related to aquaculture, and it has also had a significant impact on the aquaculture industry.

So what are the dangers of the continuous rainy season to aquaculture? And how can it be prevented? Let's take a look.

Hazards of the ongoing rainy season.

1. Before the rainy season in June and July, it will often be accompanied by high temperature, sultry and other weather, which is easy to cause the decline of dissolved oxygen in the aquaculture water, resulting in the deterioration of water quality, and the aquatic organisms are also prone to stress and poisoning during this period, which is extremely harmful.

2. During the rainy season, the water temperature of the pond will drop very much, and the lack of light during the rainy season will lead to the change of the microecological structure of the pond.

3. The harm after the rainy season is mainly manifested in: the formation of sulfurous acid and nitrous acid, which causes damage to the respiratory organs and mucous membranes of the digestive tract of aquatic animals.

In addition, the ground around the pond and the slope protection of the pond are washed by rainwater and contact with the soil, so that the pesticide residues and heavy metals in the soil are brought into the pond with the rainwater, causing water pollution.

How to deal with the continuous rainy season.

1. The first thing to be solved is the stress response and poisoning.

It is recommended to add aerobic equipment to the pond before the rainy season to ensure that the dissolved oxygen is not less than 4 5 mg L.

And you can also use the Oriental organic acid water quality bottom improver to change the bottom, and splash the whole pool after dissolving in water.

At the same time, the oriental lactic acid bacteria are splashed to improve the immunity of aquatic animals in order to cope with the upcoming rainy season.

2. During the rainy season, the amount of feeding should be appropriately reduced to reduce the oxygen consumption of the bent zone gas plant in the pond.

At the same time, the amount of activity of farmed animals is reduced, thereby reducing the total oxygen consumption of pond organisms.

3. After the rainy season, it is necessary to remedy the different hazards that have been caused in time.

For problems such as sulfur dioxide, oriental organic acids can also be used for water purification and detoxification; In terms of the treatment of metal residues, it is recommended to use Oriental organic acid poison water detoxification substrate improver to decompose toxic and harmful substances such as pesticides and heavy metal residues in the water body. Finally, some water turbidity and algae problems, it is recommended to use Oriental EM bacteria, with an appropriate amount of pool water and 200-500 grams of brown sugar soaked for 8 hours, the whole pool is evenly sprinkled with this product, a bag of this product can be used 10 acres of rice water depth, once every 10 days, cyanobacteria pond, black and odorous pond double the use of the line, and use it again every three days.

In general, aquaculture farmers must pay attention to the impact of the weather and do a good job of prevention in time, so as to ensure that aquatic animals can survive the rainy season safely.

That's all for the management of aquatic products in the rainy season, welcome to read other agricultural content on Cucumber.com.

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