Mixed aquaculture method for breeding shrimp seeds and fish fries of fish and shrimps

Abstract

Provided is a mixed aquaculture method for breeding shrimp seeds and fish fries of fish and shrimps. A pond is arranged and matched with aquatic water. Fish fries and shrimp seeds are thrown into the pond and baits are also thrown. The mixed aquaculture method is characterized by comprising following steps: selecting shrimp seeds with the specifications of 0.8 to 1.2 centimeters when fish fries and shrimp seeds are thrown, selectively purchasing a first crop of seeds in a nursery or two to three crops of seeds, throwing enough shrimp seeds to one shrimp pond, placing seed bags to pond water for 20 to minutes when shrimp seeds are conveyed at the position, slowing pouring out shrimp seeds after bags are opened without roiling pond water, controlling temperature difference not to exceed the range of 2 DEG C during a seed-throwing process, keeping water temperature above 18 DEG C and maintaining salinity difference no more than five thousandths at the PH value of 7.6 to 8.6. Seeds are not properly thrown on windy and rainstorm days. The method for selecting fish fries is performed in such a manner that grass carp fries or tilapia fries, having robust physiques, are selected, wherein the specification of grass carp fries ranges from 0.5 to 0.75 kg / tail and the specification of tilapia fries ranges from 0.1 to 0.3 kg / tail. In terms of breeding density, grass carps are bred in the density of 100 tails to 200 tails / mu and tilapias are bred in the density of 300 to 500 tails / mu. The mixed aquaculture method for breeding shrimp seeds and fish fries of fish and shrimps has following beneficial effects: a conventional extensive mixed aquaculture method of fish and shrimps is overcome; and obvious economic benefit is obtained due to aquaculture of fish and shrimps.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, in particular to a fertilizer and water method for mixed culture of fish and shrimp. Background technique [0002] At present, in aquaculture, especially fish and shrimp farming, it is generally after the seedlings are put in and raised, and then it is harvested. At present, polyculture is adopted in many areas, but the traditional extensive fish and shrimp mixed culture method is adopted, and the economic benefits will be affected when the fish is on the market. Contents of the invention [0003] The purpose of the present invention is to provide a kind of mixed culture of fish and shrimp to stock in a suitable place for shrimp seedling and fish fry method, to overcome current fish and shrimp culture, adopt the traditional extensive fish and shrimp mixed culture method, the shortcoming that affects economic benefit when fish is caught on the market. [0004] The object of the present inve...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for fish and shrimp mixed culture to stock shrimp fry and fish fry, to overcome the current fish and shrimp culture, adopting traditional extensive fish and shrimp mixed culture Methods, disadvantages affecting economic benefits when fish are caught on the market