Marsh fertilizer is good for feeding fish

Biogas manure contains trace elements such as copper, iron, magnesium, manganese, and zinc. It also contains lysine, tryptophan, methionine, niacin, and riboflavin. It is used as feed for feeding fish, and it works well. Biogas fertilizers include biogas residue and biogas slurry. Biogas residue can be used as a base fertilizer for fish ponds, and can also be used as a topdressing fertilizer. Biogas slurry can be used as a topdresser for fertilizers to make base fertilizers for fish ponds. The fish ponds with a water depth of 2 to 2.5 meters per trade and 500 kg of fish produced can be used. 10 residue of biogas residue; used as top dressing, need water or biogas slurry to prepare fertilizer solution with solid content of 1%; if the concentration of solid material in biogas slurry is about 1%, it can be directly poured into the fish pond. . When pouring, it is usually once a week, about 15 tons each time. In terms of specific control, the time and amount of topdressing should be flexibly arranged according to the season, climate change and the quality of fish ponds. The main indicator is the transparency of water color. If the transparency of the water color is greater than 30 cm, it must be applied. If it is less than 20 cm, it is not suitable for top dressing. Each topdressing should be done on a sunny morning. According to the practice of some fish farming specialists, there are three main advantages to using biogas fertilizers to feed fish: First, it can improve the nutritional conditions of fish ponds, promote the reproduction and growth of plankton, and increase the yield of adult fish. Compared with feeding pig manure into fish ponds, adult fish fed with marsh can increase production by 19% to 33%; second, it can improve the ecological environment of fish ponds and increase the dissolved oxygen in water by 10% to 15%; The occurrence of fish diseases, fish gill disease, erythroderma, enteritis, and white beak can be controlled effectively. In addition, the addition of a certain amount of soil in the biogas residue can also be used for the cultivation of jaundice. If 2 to 3 kilograms of Aberdeen are used per square meter of Dianchi Lake, the weight can be increased by more than 1 time after six months. You do not need to re-enter Tsai and use natural breeding.

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