Method for constructing algal phase in prawn culturing pool

Abstract

The invention discloses a method for establishing the algal phase of a shrimp culture pond, microalgae with the dominance of greater than 0.15 is selected from a culture water body, the microalgae is arranged in culture liquid with the nitrogen source concentration of 261 to 338mumol / L and the phosphorus source concentration of 25 to 32mumol / L, the enlarged culture and propagation are carried out under the culture conditions till the microalgae total biomass which is required by the shrimp culture, algae liquid is further introduced into the shrimp culture pond for the shrimp culture: the temperature is 24 to 27 DEG C; the salinity is 21 to 26; the pH is 7.5 to 8.5; the light intensity is 5500 to 7000Lx, and the lighting ratio is 12: 12 to 14: 10. The microalgae ecological environment of the shrimp culture pond is optimized by establishing the algal phase to cause the balanced culture of various types of microalgae, thereby being conductive to avoiding the single biological diversity of the shrimp pond caused by excessive culture of individual microalgae or group disappearance during the culture process and the situations of drastic change of water environment, deterioration of the quality of the environment of the culture water body, and the like.

Description

technical field [0001] The invention relates to a method for constructing an algae phase in a culture pond, in particular to a method for constructing an algae phase in a shrimp culture pond. Background technique [0002] Due to the rapid development of the shrimp farming industry, the increase in the intensive and semi-intensive level of the shrimp farming ponds, and the limitations of the manager's technology, etc., the reasons such as the eutrophication of the farming water, the imbalance of the farming ecological environment, the frequent occurrence of shrimp diseases and the decline of product quality And other issues. The use of microalgae technology to regulate the ecological environment of shrimp farming has become a hot research topic at present. [0003] Microalgae is the primary producer in the culture pond and occupies an important position in the shrimp culture pond. It increases the dissolved oxygen content in the culture water through photosynthesis, and can ...

AI Technical Summary

Problems solved by technology

[0004] At present, regulation of microalgae in shrimp culture ponds or artificial directional cultivation of planktonic microalgae are mostly carried out for a single species or two types of microalgae. The diversity index of the microalgae community is relatively low, which is not conducive to the stability of the microalgae community in the water environment, resulting in the difficult cultivation of algae in the early stage of the breeding process, the easy mutation in the middle stage, and the excessive prosperity in the later stage.