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The specific usage of Qifu aquatic EM strain fermentation broth in aquaculture.
1.Pond fish farming.
Sprinkle once every 15 days (best when it rains). 1 kg of EM strain fermentation broth per mu.
Fish feed treatment: Fish feed can be sprayed with 200 times EM strain fermentation broth dilution, sprayed with moisture to degrees, and fed immediately to avoid scattering.
Manure treatment: EM strain fermentation broth 1 manure 500 ratio fermentation and then put into the water body.
Prevention and control of fish diseases: fish floating head or pan pond, 2 kg of EM bacterial solution per mu to make dilution evenly splashed on the water surface, and then splashed once every 2 days.
2.Special aquaculture (soft-shelled turtle, shrimp, eel, cinnamon fish, etc.).
Environmental treatment: One week before releasing water, spray and purify the environment evenly with 100 times EM bacterial solution instead of lime. 3 days before stocking, splash the water surface with the dilution of the fermentation broth of EM strains with a concentration of 1/200,000; Spray once every 10-15-30 days, and where the water quality is poor, the concentration should be increased to shorten the splashing interval.
Adjust water quality: The pool of high-density water exchange twice a day should not be splashed directly, but should be splashed next to the aerator or water inlet, and the beneficial microorganisms should be diffused through the action of the machine and water flow, so as to decompose harmful substances in the shortest time and stabilize the water quality as soon as possible. It is advisable to sprinkle the dilution of EM bacteria solution after each water change (the concentration is the same as above).
For shrimp, soft-shelled turtles, etc., sprinkle the dilution 2-3 times a month, and increase the dosage appropriately during the onset season.
Fish feed processing: Stir evenly with 100 times EM strain fermentation broth dilution and powdered feed, and feed in a clump. For soft-shelled turtle ponds fed with fresh animal feed, the feed can be crushed first, and then mixed with compound feed and 100 times EM strain fermentation broth diluent to feed evenly.
Food table treatment: Check the food table before each feeding, and clean and purify the food table with 200 times EM strain fermentation broth diluent.
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The fish floating head is directly caused by the lack of dissolved oxygen in the water, and the aeration operation can be adopted;
In addition, if the water is black, consider replacing part of the water in the pond, and disinfecting it moderately, and splashing chlorine dioxide, but control the concentration.
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The main function of salt sprinkled on the fish float is to improve the taste of the fish and maintain the freshness of the fish. Specifically, when the fish is caught, it is difficult to avoid the fishy smell and fishy smell in the body, and the fish floating head is the most fishy place on the fish. Therefore, using salt to remove the fishy smell of the floating head of the fish can make the whole fish more delicious.
At the same time, salt can also make the meat of the fish firmer, more elastic and taste better.
In addition to removing the fishy smell of the fish floating head, sprinkling salt on the fish floating head can also play a role in preserving the freshness. Salt is a natural food preservative, which can inhibit the reproduction of bacteria and prolong the shelf life of fish.
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Hello dear, it is my honor to answer for you, as far as I know, the role of salt sprinkled on the fish floating head is to help the fish recover their strength and relieve physical discomfort. As fish swim in the water, they need to constantly swallow water to maintain breathing and balance. If a fish expends too much energy during swimming or develops some disease, it can cause them to have a floating head, which is manifested as a head that rises upwards and cannot sink into the water.
In this case, sprinkling salt into the water can help increase the density of the water, so that the fish need more strength to sink the head into the water. At the same time, salt also has the effect of antibacterial and anti-anterior anthritis, which can help fish relieve the symptoms of physical discomfort and promote their **. Therefore, in some cases, such as ** diseased fish, improving water quality, etc., it is a common method to sprinkle salt into the water.
Steps and phenomena: After the power is turned on, there are bubbles on the surface of the electrode (anode) connected to the positive electrode of the power supply, and the yellow-green gas can make the moist starch potassium iodide test paper turn blue; Bubbles emerge from the surface of the electrode (cathode) connected to the negative electrode of the power supply, and a slight popping sound can be heard when the colorless gas is collected and ignited. Phenolphthalein test solution was added dropwise in the cathode area, and phenolphthalein turned red.
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There are two bottles of out-of-label reagents in the laboratory, one of which is saturated saline and one is distilled water, and there are several kinds of identification, as follows: >>>More