Biogas slurry fish operation
Biogas slurry production can increase by an average of 16%. This is because the biogas slurry is rich in organic matter. After entering the fish ponds, the amount of plankton biomass in fish ponds can be increased, photosynthesis can be enhanced, oxygen production can be increased, fish diseases can be reduced, fertilizers and foods can be saved.
In general, the biogas slurry for fish farming does not require solid-liquid separation. It usually contains more solids than biogas slurry for foliar spraying. Biogas slurry and biogas residue are used interchangeably. Biogas slurry has a certain degree of reducibility, and it will be better if it is used for more than 3 hours.
Operational points: Generally, the amount of biogas slurry per acre for a fish pond is not to exceed 300 kilograms, and the amount of biogas residues does not exceed 150 kilograms. The weekly application should not exceed 3 times. Choose sunny days, use splashing method. Fish ponds that use biogas slurry adopt the method of polyculture of filter-feeding fish and food-eating fish, that is, about 30% of the filter-feeding chain fish are stocked, 40% to 50% of omnivorous cod and cod, and 20% to 30% of eating grass carp. The transparency of fish ponds is not less than 15 to 25 centimeters.
In general, the biogas slurry for fish farming does not require solid-liquid separation. It usually contains more solids than biogas slurry for foliar spraying. Biogas slurry and biogas residue are used interchangeably. Biogas slurry has a certain degree of reducibility, and it will be better if it is used for more than 3 hours.
Operational points: Generally, the amount of biogas slurry per acre for a fish pond is not to exceed 300 kilograms, and the amount of biogas residues does not exceed 150 kilograms. The weekly application should not exceed 3 times. Choose sunny days, use splashing method. Fish ponds that use biogas slurry adopt the method of polyculture of filter-feeding fish and food-eating fish, that is, about 30% of the filter-feeding chain fish are stocked, 40% to 50% of omnivorous cod and cod, and 20% to 30% of eating grass carp. The transparency of fish ponds is not less than 15 to 25 centimeters.
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