CATDOLL : CATDOLL: How to raise white lotus, flower chain, and grass carp

My answer will be used for others to learn from, and even for reference by hundreds of thousands of people. I will answer seriously, please rest assured, the administrator of flowers, birds, insects and fish:

The answer will be officially replied! Please wait patiently for a few minutes or even dozens of minutes. Please forgive my speed because it is all handwritten.

Here is the standard answer:

Answer the question "How to breed silver carp, bighead carp and grass carp" How to manage them technically

The basic requirements for breeding silver carp (bighead carp), bighead carp and grass carp are the same, and there are not many different management requirements.

Differences: Silver carp and bighead carp are both filter-feeding fish, while grass carp is an herbivorous fish. Of course, they can all eat complete feed, mixed feed, green pellet feed, etc. Silver carp, bighead carp and grass carp are middle and lower layer fish, but grass carp is prone to illness.

Same points: breeding environment, water depth, management, water quality requires fresh and tender, but since there are grass carp, the density of algae and the content of plankton animals must be controlled, so as to avoid the grass carp getting sick and ensure the normal feeding of silver carp and white lotus.

Fry requirements: consistent color, appearance, size, no disease or damage, smooth mucus on the surface of the fish, lively and strong

A: High-density farming

Single culture high density seeding number: 1100 / mu 2 oxygenators (specifications: winter summer flower, adult fish fry)

Note: If the fry are too large, the number of fry should be reduced by 6% to 15% for every pound of weight gain. The water depth should be 1.5 to 2 meters.

Number of seedlings in mixed culture with high density:

1 aerator, 550 fish/mu (specification: 300g summer flower), 300 fish/mu (specification: 200g summer flower), 180 fish/mu (specification: 80g to 100g summer flower), 100 fish/mu (specification: 300g summer flower)

Note: The above requirement for the number of fry is low. Carp and other underground fish should be cultured. Otherwise, the fish pond will become turbid. Bighead carp and silver carp are not easy to be cultured together. The water depth is required to be 2 meters to 2 meters 2

B: Low-density farming

Number of seedlings planted in single culture with low density:

700 fish/mu 1 oxygenator (Specification: 500g 1-year-old fry)

Number of seedlings in mixed culture with low density:

1 aerator 350 fish/mu (specification: 300g summer flower), 200 fish/mu (specification: 200g summer flower), 100 fish/mu (specification: 80g to 100g summer flower), 50 fish/mu (specification: 500 to 1000g)

Note:

1. The stocking ratio of A and B can be increased or decreased. The downward range can be determined by yourself. The upward range should not exceed 13% to 28%. It is not suitable to raise carnivorous fish. It is not suitable to put feed and bait on the first day of stocking fry.

2. The stocking time of fish fry should be from January to March in winter, which is beneficial to reduce diseases and losses. Carnivorous fish should be stocked from early summer from March to early May.

3. When stocking carnivorous fish, you cannot stock herbivorous fish of the same size or omnivorous filter-feeding fish. You must stock fish that are 1 times heavier than carnivorous fish. When stocking grass carp and carnivorous fish, you must stock scavenger fish (such as silver carp, bighead carp, and bighead carp) to clean the water and improve aquaculture efficiency.

4. The fish pond should be disinfected before releasing the fry. The fry must be soaked in cold water with potassium permanganate, salt, etc. for 15 minutes.

5. The above-mentioned stocking specifications of summer fish can be replaced with fish and 1-year-old and 2-year-old winter fry.

Technical extension: Silver carp and bighead carp cannot be raised in a cage, the number of carp in cage should be as small as possible, raising crucian carp in a cage helps other fish grow, and raising a small amount of small carnivorous fish in a cage helps eliminate miscellaneous fish

Fishery fertilizers started relatively late in aquaculture, and related technologies and experience need to be improved. Here we will talk about the more common release specifications and management precautions.

A: Matters needing attention when placing fertilizers

(1) Fertilization order: Phosphorus fertilizer - Nitrogen fertilizer (the interval between the two fertilizers is 2 hours or 12 hours)

(2) Suitable temperature for fertilizer application: 18 to 28 degrees

(3) Release time: 12:00 noon to 2:00 pm on sunny days

(4) Release season: May to October

B: Types of fertilizers

Ammonium bicarbonate, urea, superphosphate, potassium nitride, ammonium chloride, ammonium sulfate, etc.

C: Fertilization ratio

(1) Mix ammonium bicarbonate: superphosphate in a ratio of 2:1

(2) Mixed urea: superphosphate ratio 2:1

(3) Mix ammonium bicarbonate: superphosphate ratio 4:1

D: Things to note when applying fertilizer for the first time

1 mu 1 meter deep water first time (500 cubic meters) ammonium bicarbonate: 10 catties urea: 4 catties superphosphate: 1 catties

Water depth 2 meters doubled 3 meters doubled

Fertilization can produce 300 to 400 catties of benefits per mu per year

Fertilization requirements:

(1) Timely, small amount, multiple times, and uniformity

(2) Customize different fertilizer application amounts and times according to different weather conditions

(3) The fertilization effect is better after using organic fertilizer fermentation

Appendix: Note on the application of organic fertilizer: Feces must be fermented by EM bacteria for 7 days before fertilization, and sprinkled throughout the pond on sunny days

Note: When applying fertilizer, pay attention to controlling the levels of blue algae, filamentous algae, golden algae, and green algae

(Appendix) Extension of fish pond algae control technology

1: When the algae content is too high, it is easy to cause hypoxia and poisoning in the fish pond, resulting in breeding losses, so the growth of algae must be controlled

The drugs used to control algae include the following:

Ammonium sulfate: Promotes the growth of plankton, controls golden algae, and promotes the growth of filter-feeding fish

Ammonium bicarbonate: water improvement, weed removal, and golden algae killing

Borax: It is beneficial to improve water quality after algae removal and to prevent and disinfect water.

Calcium sulfate: water improvement and promotion of aquatic life growth

Ferrous sulfate: kills algae and removes water parasites

Ammonium hydroxide: for treating poisoning caused by golden algae and for use as a base fertilizer for fish ponds

Calcium oxide: promotes the growth of algae in water bodies, eliminates aquatic organisms, sterilizes and improves water transparency, and provides aquatic plants with the ability to utilize superphosphate

Acetic acid: relieves golden algae poisoning and regulates pH value in water

Copper sulfate: controls and eliminates algae, has insecticidal and bactericidal effects, and can prevent water mold disease.

You can ask the fish pharmacy for other drugs for prevention and treatment. There are many kinds of drugs. You can consult and check the relevant information yourself.

E: Fertilization precautions

(1) Do not wait until the fish pond is thin before applying fertilizer, as this will increase costs and reduce utilization.

(2) When applying fertilizer, be sure to stay in the upwind area or shallow area. If you use chemical fertilizers for a long time, use quicklime or slaked lime to neutralize the pH value of the water (40 catties).

(3) Reservoir use is prohibited to protect the ecological environment and maintain normal irrigation water quality

:Fish pond conditions

Fish pond water quality requirements: fat, active, tender, refreshing

Fertilizer: Phytoplankton Live: Water body organic matter content Tender: Algae growth Cool: Water clarity and transparency

Fish pond geological requirements:

Different pond bottoms can be used for different fish, such as gravel bottom, mud bottom, stone bottom, and mud depth of 15 cm.

Fish pond environment requirements;

(1) No sewage, no dust, no chemical plant, no heavy metals

(2) The area should be long from east to west and wide from north to south, facing the sun and sheltered from the wind, and the water depth should be controlled between 1.5 and 2 meters.

Fish pond water quality source:

(1) Precipitation, river water, stream water, deep well water, groundwater, etc.

(2) Fish ponds are required to have water inlets and outlets

(3) Pay attention to old water storage ponds in northern areas

B: Water quality control and regulation management

Turbid water measures

(1) Add 10 to 20 cm of clean water or replace the entire pool water

(2) Pay attention to the stocking density and quantity of bottom fish

(3) Use of halogens such as quicklime, bleach, slaked lime and calcium oxide, water conditioners, and alkaline chemical fishery environment conditioners

Water corruption measures

(1) Change water

(2) Use borax, bleach, etc. to improve water quality

Water body improvement

When changing water, it is best to use water conditioners such as slaked lime and calcium oxide. EM bacteria and photosynthetic bacteria can be used to adjust water quality.

Water pH adjustment

(1) There are many chemical substances that can change the pH value of water, such as quicklime, bleaching powder, etc.

(2) If the alkalinity is too high, use acid; if the acidity is too high, use alkalinity

C: Other water bodies

Stream:

Note: Watch out for fish entering the fish pond, pesticide use, prevent others from poisoning, and pay attention to whether there are sick, injured or dead poultry and birds upstream of the stream

spring:

Pay attention to the pH value of the water body and regularly check whether the water body contains excessive heavy metals

Excessive levels of heavy metals in water bodies can easily lead to chronic or acute poisoning and death of fish, and the appearance of rust or surface attachments around ponds.

(Appendix) The sources of heavy metals in water bodies are: changes in groundwater flow and factory sewage, changes in groundwater layers and temporary underground flooding, and metals in the soil carried away by water flow. This disease is heavy metal poisoning and there is no very effective treatment or curative plan.

Tap water:

Tap water contains halides and chlorides, which are harmful to fish and can easily lead to death and growth retardation.

Measures for flooding into ponds:

The water body is seriously polluted after the flood. In addition to adopting measures to fence fish, the pond must be disinfected and pest-killed all day long on sunny days in the later stage of the flood, and the water body must be regulated to cultivate water nutrition and fattening.

The order of disinfection after pond flooding: quicklime - trichlorfon - fertilizer

D: Summer water quality management:

(1) Water is prone to spoilage and discoloration in summer, so it is necessary to use an aerator to aerate the water in time.

(2) In summer, add 20 cm of water every half month and change the water once a month. For transparent water, add 20 cm of water every half month.

(3) In summer, 20 catties of quicklime per mu should be used to improve water bodies and disinfect them.

Note: quicklime and summer fertilizer cannot be applied at the same time, there should be a 15-day interval between them

Summer water temperature issues

(1) In summer, the water level is kept low at 80CM~100CM due to high temperature

(2) Keep the water level high on cloudy days

(3) In summer, red algae and blue algae appear in water bodies and need to be cleaned up in time. Lime and nitrogen fertilizer should not be used.

(4) If algae appear, you can replace the water and use phosphorus fertilizer

(5) If fish disease is caused by algae, the water needs to be adjusted and fish medicine should be used for treatment.

(6) In summer, the water level should be kept as low as 80 cm to 1 m, which is beneficial to fish growth and prevents fish diseases and high temperatures.

Key points for fish pond water quality management in summer:

(1) Maintain low water level and water transparency above 30 cm in summer

(2) Fill with 20 cm of water every 7 days and change the water every 15 days. When changing the water, fill it first and then drain it. If it is cloudy, you don’t need to pump it out.

(3) In summer, pour 50 catties of quicklime mixed with water into the ground at a depth of 1 mu (1 meter) and sprinkle it. Add 20 cm of water after spreading.

(4) In April, 50 catties of quicklime mixed with water was poured over 1 mu (1 meter) of land, and 20 cm of water was added after pouring.

In May, 100 catties of quicklime mixed with water was poured on the ground at a depth of 1 mu (1 meter). After pouring, 40 cm of water was added.

In June, 60 catties of quicklime mixed with water is poured on 1 mu and 1 meter deep. After pouring, add 40 cm of water and fertilize 15 days later.

From July to September, keep the water level low and the water transparency above 30 cm/fill 20 cm every 7 days. Change the water every 15 days. Fill the water first and then drain the water. If it is cloudy, you don’t need to pump the water.

Winter water quality management:

(1) Fish growth basically ends in winter, but you still need to pay attention to their health

(2) In winter, the old water stored in the summer should be pumped back into the fish pond (this method is effective for breeding in northern regions)

(3) When the pond is frozen, dig holes, place branches, and pay attention to the oxygen content of the water.

(4) In winter, the water depth needs to be 1.5 to 2 meters to help survive the cold winter.

There is nothing special, just use feed and pay attention to the stocking density.

Fertilizer is also needed. If the temperature is too high, you need to provide

Just water it, the same goes for gaining experience.

You can go to the fish farming forum to have a look at the stew