System for breeding acrossocheilus fasciatus and purifying and utilizing tail water

Abstract

The invention relates to a system for breeding acrossocheilus fasciatus and purifying and utilizing tail water. The system comprises a culture pond and a rice field. The system is characterized in that 1, a horizontal fishing net is installed in a breeding pond; 2, the area of the rice field is 80 times more than the area of the breeding pond, a sedimentation pond is arranged in the rice field, and the area of the sedimentation pond is 1.5-2 times the area of the breeding pond; shrimp ditches are also arranged in the rice field and are used for breeding silver carp, bighead carp, plagiognathops microlepis and crayfish. The acrossocheilus fasciatus is placed in a breeding pond on the upper portion of the fishing net, residual baits and fish manure sink into the bottom of the pond through the fishing net and enter the sedimentation pond along with water flow, and large-particle substances in the residual baits and the fish manure are precipitated in the sedimentation pond, so that the residual baits and the fish manure are convenient to collect and are supplied for farmland use; small granular materials enter the rice field and the shrimp ditches along with the water flow, and can beeaten by the plagiognathops microlepis and the crayfish; and nitrogen and phosphorus easily dissolved in a water body can be absorbed by growing rice and waterweeds, so that the breeding tail water is fully purified. On the one hand, the invention provides a method for breeding the acrossocheilus fasciatus, and on the other hand, it can be ensured that the discharged breeding tail water can reachthe standard.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a system for aquaculture and tail water purification and utilization. Background technique [0002] The light-lipped fish is a kind of small freshwater economic fish that inhabits mountain streams. It is distributed in Zhejiang, Anhui, Fujian and other places. It is widely distributed in the mountainous areas of southern Anhui. Because of its high market price and broad breeding prospects, in recent years, the The people began to artificially raise the light-lipped fish. Because the light-lipped fish has high requirements for dissolved oxygen, temperature and transparency of the water body, the current light-lipped fish is mainly cultured in running water. However, running water farming requires continuous discharge of tail water, and a large amount of residual bait and fish feces contained in the tail water are discharged directly without treatment. This farming ...

AI Technical Summary

Problems solved by technology

However, flowing water aquaculture requires continuous discharge of tail water, and a large amount of residual bait and fish feces contained in the tail water are discharged directly without treatment. This kind of aquaculture method is very easy to cause environmental pollution

However, the existing bald fish culture ponds do not use fish manure separation devices, and most of the culture wastes are deposited at the bottom of the pond, which needs to be cleaned regularly

Existing tail water from bald-lipped fish culture is either directly discharged, or discharged after simple sedimentation, which is neither fully purified nor reused

Images