Ecological fish farming method and device based on ditch and pound compound system

Abstract

The invention discloses an ecological fish farming method and device based on a ditch and pound compound system. The method comprises the steps as follows: A, source water which accords with a fishing water quality standard and acquired in a sounding area through automatic flowing is pumped into an aquaculture pond; B, an aquaculture model combing high-density stocking with multiple stocking and multiple fishing is adopted; C, the aquaculture season approaches; D, an impeller type aerator and a water cultivator are arranged in the aquaculture pond; E, different aquatic economic plants are planted in sections in an ecological ditch; and F, leakage and water evaporation occur, and water is supplemented into the aquaculture pond. The aquaculture pond is connected with the ecological ditch through a water pump, water outlet at the tail end of the ecological ditch is connected with the aquaculture pond through a water collection pipe, an escape-proof net is arranged at a water inlet end of the water collection pipe and a water level control pipe is inserted into a water outlet end; and the aquaculture pond adopts a prefabricated concrete protection slope, creasing is performed with bricks at the top of the slope, a concrete foundation beam is added at the bottom of the slope, and the ecological ditch is arranged around the aquaculture pond. The structure is simple, the aquaculture is convenient, the aquaculture yield is remarkably increased, the environment of the water area is protected, and water resources and material energy are recycled.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and more specifically relates to an ecological circulation aquaculture method using an ecological ditch as a water treatment unit, and also relates to an ecological fishery aquaculture device based on a ditch-pond complex system. Background technique [0002] Pond aquaculture is the main body of my country's aquaculture industry, and it makes a significant contribution to freshwater aquaculture. However, the traditional aquaculture methods of high density, high feeding rate, and high water exchange rate used in pond aquaculture have had adverse effects on the internal and external environment of aquaculture, and have become a bottleneck restricting the further development of pond aquaculture. The outstanding problems faced by pond culture are listed as follows: [0003] (1) The pool ridges are generally collapsed and the aging phenomenon is serious [0004] Most of the aquaculture ponds in ...

AI Technical Summary

Problems solved by technology

The ridge of the pond collapsed and was damaged. On the one hand, the water retention effect decreased, and the ideal water level was not closed for many years; Yield

In addition, damage to the pond ridge will also cause inconvenience to the transportation of fish species and feed

[0005] (2) Bottom silt deepens and lacks effective utilization

[0006] Feed is the main food source for breeding objects. However, only a small part of nitrogen, phosphorus and carbohydrates in the feed are absorbed by fish, and most of them are deposited at the bottom of the pond in the form of feces and residual bait, forming silt, which is easy to breed bacteria

At present, the silt in aquaculture ponds is not effectively utilized, and most of them are discharged to the surrounding ridges of the ponds. However, as the rain washes away, part of the nitrogen and phosphorus will flow back into the fish ponds.

[0007] (3) Increased consumption of water resources and energy consumption

[0008] Traditional pond culture is at the cost of continuous consumption of natural resources. Pond culture consumes more water resources, and at the same time consumes more and more biological resources and electric energy.

The large amount of waste generated during the breeding process leads to the deterioration of pond water quality, which needs to be mitigated by mechanical aeration or water exchange, which consumes energy and water

[0009] (4) Diseases occur frequently, and the quality and safety of aquatic products are damaged

The breeding density is too high, and a large number of drugs and additives are used, which further deteriorates the breeding environment, greatly increases the risk of breeding, and seriously reduces the quality of aquatic products.

The non-standard and unscientific drug use in the actual breeding production has made the problem of drug residues a major bottleneck that plagues the export of aquatic products in my country and a hidden danger that threatens the health of our people.

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