A kind of self-circulation type prawn cultivation method

Abstract

The invention belongs to the technical field of aquaculture equipment and relates to a self-circulation prawn aquaculture method. Fibrous ball bags filled with fibrous balls are hung on transverse bars on walls of a constructed aquaculture pond, the fibrous balls in the fibrous ball bags serve as carriers for microbial growth, nitrifying bacterium agents are added to the fibrous balls to enable proliferation of nitrifying bacteria on the fibrous balls to form a dominant bacterial community in short time, and accordingly toxic substances such as ammonia and nitrites in aquaculture water can be removed quickly, functions of prawn aquaculture and automatic water purification are both realized by the aquaculture pond, a stable system is formed, and quantitative adding of microbial liquid into an aquaculture system at fixed time in an aquaculture process is avoided. The self-circulation prawn aquaculture method is simple in technical step, easy in operation and maintenance and low in input cost, the toxic substances such as ammonia and nitrites in aquaculture water can be removed efficiently, the defect that a traditional aquaculture method requires addition of the microbial liquid at fixed time is overcome, water change frequency of the aquaculture system can be reduced, aquaculture efficiency is improved while yield is increased, and environmental friendliness in application and promising market prospect are achieved.

Description

Technical field: [0001] The invention belongs to the technical field of aquaculture equipment, and relates to a method for cultivating prawns, in particular to a method for cultivating prawns of a self-circulating type. The hair ball in the hair ball bag is used as a carrier for microbial growth, and the nitrifying bacteria are added to make nitrification Bacteria proliferate on the hair balls and form a dominant bacterial group in a short period of time, thereby quickly removing toxic substances such as ammonia and nitrite in the aquaculture water, enabling the aquaculture pond to breed prawns and automatically purify the water quality. Background technique: [0002] my country is a big aquaculture country, and its annual output ranks first in the world. For a long time, pond culture has been the main culture mode of prawns in my country, and most of them are extensive. There are two defects in this culture method. Large, according to the available statistics, it takes 20 cu...

AI Technical Summary

Problems solved by technology

However, because ammonia oxidizing bacteria and nitrite oxidizing bacteria are chemoautotrophic bacteria, they use carbon dioxide as a carbon source and oxidized inorganic nitrogen as an energy source, their growth and reproduction speed is slow, and they are sensitive to changes in environmental factors. In view of the above problems, a self-circulating shrimp farming method is designed. This system fully considers that the water depth of shrimp farming ponds is mostly about 1 meter, that shrimps like to live in the middle and lower layers of water bodies, and that nitrifying bacteria attach and grow and utilize them. Inorganic substances are used as carbon sources, and a self-circulating shrimp culture method is established. This system makes full use of the space of the culture pond, places hairball bags above the water body of the culture pond, and uses the hairballs in the hairball bag as the carrier of nitrifying bacteria; The Ammonia and Nitrite Removal Ability of the System Enhanced by Adding Nitrifying Bacteria Preparations in the Hair Ball Bag

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