Enclosed seawater pond system for mixed aquaculture of intertidal shellfish, shrimp and crab

Abstract

The invention relates to an enclosed seawater pond system for mixed aquaculture of intertidal shellfish, shrimp and crab. According to the invention, the whole enclosed seawater pond is divided into two parts comprising a shellfish cultivation zone and a shrimp and crab cultivation zone by using a nylon net; meanwhile, an automatic aerator is arranged on one side of the shrimp and crab cultivation zone, which is close to the shellfish cultivation zone. Most of mesh holes of the nylon net for separating the shellfish cultivation zone from the shrimp and crab cultivation zone are controlled within 2-3 mm, and mesh holes with the diameters of 4-5 mm are arranged on a place with the width of not more than 2 mm, which is close to the direction of the automatic aerator, so that on the one hand, the cultivated shrimp and crab can be prevented from entering the shellfish cultivation zone from the shrimp and crab cultivation zone to clamp and eat the shellfish; and on the other hand, the shellfish cultivation zone and the shrimp and crab cultivation zone are relatively stable, and when the automatic aerator is started, water flow of the shrimp and crab cultivation zone is convenient to enter the shellfish cultivation zone quickly to replenish a shellfish bait. The enclosed seawater pond system for mixed aquaculture of intertidal shellfish, shrimp and crab, provided by the invention, has the advantages of simple structure and convenience for construction, and can prevent fish bait microalgae from being consumed completely when the shellfish biomass live weight is larger in rainy days, and ensure that the intertidal shellfish obtains enough fish bait in the whole cultivation period and a relatively stable water area ecological environment is provided for the shrimp and crab cultaivation.

Description

Technical field [0001] The invention belongs to the technical field of aquaculture, and relates to a mudflat shellfish and shrimp and crab mixed culture enclosure system, in particular to a nylon net to separate shellfish and shrimp and crab culture areas to maintain the relative stability of waters in different culture areas, thereby avoiding When the shellfish biomass is relatively large in the cloudy and rainy days, all the bait microalgae in the water body is consumed, so as to ensure that the tidal flat shellfish can obtain sufficient bait during the entire breeding period. Background technique [0002] At present, the polyculture of shrimps, crabs, and shellfish is the main source of marine aquaculture enclosures. The output of shrimps and crabs accounts for 25-30%, and the other 70-75% of the output comes from shellfish culture. How to make full use of the existing seawater to enclose ponds and improve the yield and quality of aquatic products per unit area, especially she...

AI Technical Summary

Problems solved by technology

However, since shrimp, crab shellfish and bait microalgae live in the same culture system, in seasons when shellfish grow vigorously, there will be continuous overcast and rainy seasons, and it is possible that the bait microalgae in the water body will be completely

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