Method for cultivating tilapia by sea ice water

Abstract

A method for cultivating tilapia by sea ice water comprises the following steps: (1) after seawater is frozen in winter, sea ice is collected into a shoreside water storage pond; (2) after the sea ice is melted to form sea ice water in spring, the sea ice water is delivered into a first-stage purifying pond; (3) the sea ice water carries out first-stage edulcoration, purification and filtration in the first-stage purifying pond and then is delivered into a second-stage purifying pond; (4) the sea ice water carries out second-stage edulcoration, purification and filtration and then is delivered into an alexipharmic sea ice water cultivation pond; (5) tilapia fries are placed into the alexipharmic sea ice water cultivation pond and cultivated; and (6) water quality monitoring and cultivation management are carried out in the cultivation process. Novel water source sea ice water has good purification action in the freezing process, and the salinity of melted sea iced water is between 7g / L and 11g / L so that the melted sea ice water is just an optimal water environment for the growth of the tilapia, thereby the invention opens a new way for the sea ice water on the agricultural multipurpose use of coastal beaches and low-lying alkaline lands.

Description

technical field [0001] The invention relates to a tilapia culture method, in particular to a comprehensive culture method for cultivating tilapia in sea ice water. Background technique [0002] The Bohai Sea is an important marine economic water area in China. The marine fishery in the Bohai Rim region plays a pivotal role in the national fishery. The output value of the marine aquaculture industry in the coastal area of ​​the Bohai Sea accounts for 39.55% of the country's total. With the continuous development of the marine aquaculture industry in the Bohai Sea, the pollution of aquaculture water is becoming increasingly serious. The economic development along the coast of the Bohai Sea produces a large amount of industrial wastewater and urban domestic sewage discharge, which makes the coastal water environment of the Bohai Sea continue to deteriorate, which has a negative impact on the mariculture industry. [0003] Tilapia is an excellent freshwater cultured fish promot...

AI Technical Summary

Problems solved by technology

[0004] There are a large number of tidal flats along the coast of the Bohai Sea. At present, some tidal flats have been opened up as ponds for seafood farming. The salinity of direct seawater farming in this area generally varies within the range of 32-37.5g / L; while tilapia farming is suitable In the water environment with a salinity of 7-13g / L, the current tilapia farming in this area is mainly carried out by mixing seawater and freshwater. Because this farming method is affected by seawater pollution around the Bohai Sea on the one hand, fish are infected with diseases. The probability is greatly increased, and the risk of farming is increased; on the other hand, it is limited by the lack of regional freshwater resources. Therefore, tilapia farming has not developed on a large scale

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