What fertilizers to use to raise fish, how to use fertilizers to raise fish

Fish are raised with phosphate, ammonia and potassium fertilizers.

Fertilization promotes phytoplankton growth and provides sufficient food for fish. Similar to crop fertilization, nitrogen, phosphorus, and potassium must be properly matched. Nitrogen fertilizer to urea.

Ammonium sulfide, ammonium nitrate.

and ammonium carbonate, among which urea has the highest nitrogen content, while ammonium carbonate is the cheapest, and has a fast effect and high utilization rate.

Fertilizers are applied, mainly to cultivate plankton in the water. Since there is generally no shortage of potassium in fish farming waters, the chemical fertilizers commonly used in fish farming production are mainly nitrogen and phosphorus.

1. Nitrogen fertilizers:

Nitrogen is one of the main nutrients of plankton in water, which can increase the intensity of photosynthesis, accelerate the reproduction of plankton, and increase the yield of plankton. Nitrogen fertilizers commonly used in production mainly include urea, ammonium bicarbonate, ammonia, ammonium sulfate, ammonium nitrate, ammonium chloride, etc., except for ammonia, all of which are white crystals, soluble in water, hygroscopic, and fast-acting fertilizers.

2. Phosphate fertilizers:

Phosphorus is an indispensable element for the growth and reproduction of plankton, and phosphorus fertilizer can not only meet the needs of plankton multiplication, but also accelerate the reproduction of nitrogen-fixing bacteria and nitrifying bacteria in water, promote nitrogen circulation, and increase natural bait in water. There are two kinds of commonly used phosphate fertilizers, namely superphosphate and heavy superphosphate, which contain phosphorus that are easily soluble in water to generate phosphate ions, which can be quickly absorbed and utilized by plankton after being applied to water, but there is also a part of phosphorus that will be adsorbed by water droplets and sludge, some generate insoluble salts, and some are gradually released for biological use, and there is still a certain fertilizer effect within 2-3 years of fertilization.

Fresh and refreshing algae, fertilizer and hydrone.

First, the use of chemical fertilizer fertilizer fish farming can be divided into base application and top application, the amount is different, the water depth is 1-3 meters. 1.Kilograms of urea, 3-4 kilograms of superphosphate, and kilograms of potassium chloride per mu are usedIf 5-6 kg of ammonium bicarbonate (or ammonium bisulfate) is used per mu, the amount of superphosphate and potassium chloride is the same, and the base fertilizer of the cooperative fish pond is applied.

2.Top application per mu with 1-2 kg of urea, 1-2 kg of superphosphate, kg of potassium chloride;If ammonium bicarbonate (or ammonium sulfate), superphosphate, and potassium chloride are used, they are 2-3 kg, 1-2 kg and kg per mu, respectively. After dissolving the water, it is poured into the fish pond, and the fish food season is sprinkled every 7 days.

Agricultural ammonia is used as base fertilizer, and the water surface per mu is 15-20 kg;For top dressing, the dosage is halved or 1 3. If applied in combination with potassium chloride, the basal or top application rates are 3-4 kg, kg, 2 kg, kg per mu, respectively, and applied once every 10 days. Agricultural ammonia should not be mixed with superphosphate at the same time, and must be separated by 3-4 days if necessary.

Fish are raised with phosphate, ammonia and potassium fertilizers. Fertilization promotes phytoplankton growth and provides sufficient food for fish. Similar to crop fertilization, nitrogen, phosphorus, and potassium must be properly matched.

Nitrogen fertilizers are mainly urea, ammonium sulfide, ammonium nitrate and ammonium carbonate, among which urea has the highest nitrogen content, while ammonium carbonate is the cheapest, and has a fast effect and high utilization rate.

I am honored to answer for you the basic fertilizer and water knowledge of my industry, and I will summarize a few basic baits for fish farming and cultivation in reservoirs (plankton, cladoperans and beneficial algae), the specific release methods and precautions of the so-called fertilizer water, I hope to help you. 1. Use animal manure, dry chicken manure residue is the best, put it into a woven bag, and then put it into the reservoir at a fixed point in order to achieve a lasting and efficient release of fertilizer into the reservoir. 2. If conditions permit, the use of live bacteria fermentation fertilizer can reduce the damage to the reservoir environment and is also beneficial to the growth of fish such as mammoth.

3. The use of finished organic fertilizer sold on the market is costly. 4. Cultivate EM bacteria by yourself, add brown sugar and wheat bran, and then pour them into the reservoir according to the amount per mu. Recommendations:

The fertilizer and water area of the reservoir is generally large, and the water temperature is above 20, so it is necessary to get twice the result with half the effort.

1. How to fertilize water when cyanobacteria appear?

Cyanobacteria appear to treat cyanobacteria first instead of direct fertilization and algae species, because cyanobacteria have a strong reproductive ability, if fertilization or algae species are used, it is possible that the fertilizer will be absorbed by cyanobacteria, and the beneficial algae will not be able to reproduce. The methods of processing spirulina are mainly physical, biological, and chemical methods are not recommended.

Especially when the amount of cyanobacteria is very large, it is necessary to treat the cyanobacteria first and then cultivate the beneficial algae. Lowering pH, lowering light, water flow, opening oxygenation and circulation. Clay and activated carbon adsorption, increase dissolved organic carbon 2-16mg l, appropriately increase salinity to inhibit cyanobacteria, these methods can inhibit cyanobacteria, cyanobacteria can be inhibited, can be used to decompose dead algae with beneficial bacteria, and then fertilizer water.

2. How to fertilize the pond water?

The pond water is clear, the water quality should be tested first to see if the indicators are in line with algae cultivation, and then the microscope is tested to see if there are algae species, and suitable algae species and fertilizers should be selected. It is usually a lack of algae species or fertilizers in the environment, and algae species are usually selected according to the species to be cultivated and environmental conditions.

1) Choose according to the breeding environment:

Diatoms are selected at a low temperature of 5-20 degrees, especially for freshwater aquaculture;Choose green algae (chlorella or chlorella compound algae) at a high temperature of 20-36 degrees, especially for marine aquaculture

2) Selection according to the breed of breeding:

Chlorella is selected at high temperature --- shrimp farming, diatoms are selected at low temperature;

River crab - diatoms are selected at low temperature, and the whole culture is dominated by diatoms;

Sea cucumber - diatoms are selected at low temperature, and the whole cultivation process is dominated by diatoms, and chlorella is appropriately supplemented by high temperature dormancy;

Fish - choose diatoms at low temperatures, and supplement chlorella at temperature.

The choice of fertilizer is also quite important, mainly choose fertilizer suitable for algae propagation, fertilizer for directional culture, mainly inorganic salts and minerals and trace elements. It is not recommended to use organic fertilizer in the early stage, especially manure.

The top is a different water color, different algae, the first picture is mainly diatoms, and the bottom is mainly dichlorophytes.

Maintaining sufficient fertility in the water body is an important condition for fish farming. Generally, in spring and summer (April and June), live and cool fertilizer water can be used, and the method is to mix 1 kg per mu with 1 kg of potassium dihydrogen phosphate and use it well, and the water body can be cultivated in 2 days. In summer, the pond water is fertilized, and the use of fertilizer and water element will have a good fertilizer and water effect with half a bag to 1 bag per mu; At the same time, it also has the effect of reducing ammonia nitrogen and increasing dissolved oxygen content.

( ) Scattering spells. The phosphate fertilizer is first crushed into powder and then sprinkled directly into the fish pond, or sprinkled with water throughout the pond.

Hanging bag method. Put the phosphate fertilizer into gauze bags, kilograms per bag, and tie the bag tightly. Stick bamboo poles in the fish pond and hang the bag above the water. General square meters of water hanging bags.

) Mixed cast. Phosphate fertilizer is mixed with organic fertilizer (livestock and poultry manure, biogas fertilizer, etc.) and evenly applied into the pond after fermentation.

Summary. For fish farming in the reservoir, it is necessary to put chicken manure, sheep manure, sunken wood leaves, etc. into the bottom of the water, and pour a certain amount of EM source dew to promote the growth of bacteria.

For fish farming in the reservoir, it is necessary to put chicken manure, sheep manure, sunken wood leaves, etc. into the bottom of the water, and pour a certain amount of EM source dew to promote the growth of bacteria.

The main principle of chemical fertilizer fish farming is to increase the concentration of phosphorus, nitrogen and other elements in the water body by applying phosphate fertilizer, nitrogen fertilizer and other inorganic fertilizers to the reservoir, promote the growth of phytoplankton, and improve the initial and large withering level productivity of the water body, so as to increase the yield of silver carp and bighead carp. Since phosphorus and nitrogen are the limiting nutrients in the reservoir, supplementing such elements has a good effect. The increase in phytoplankton will also lead to an increase in debris, bacteria, and zooplankton, so stocking silver carp and bighead carp can obtain higher yields.

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Summary. Fish are raised with phosphate, ammonia and potassium fertilizers. Fertilization promotes phytoplankton growth and provides sufficient food for fish. Similar to crop fertilization, nitrogen, phosphorus, and potassium must be properly matched.

Fish are raised with phosphate, ammonia and potassium fertilizers. Fertilization can promote the growth of phytoplankton dust ears and provide sufficient hail bait for fish. Similar to crop fertilization, nitrogen, phosphorus, and potassium must be appropriately matched.

What content of chemical fertilizers are used.

Fish are raised with phosphate, ammonia and potassium fertilizers.