Pond ecological breeding method for large yellow croaker

Abstract

The invention discloses a pond ecological breeding method for large yellow croaker, which comprises a breeding pond with sand or sandy mud at the bottom. 1.0-2.0 kilograms of perinereis albuhitensis grube is stocked on the pond bottom of each mu of pond; chrysanthemum gracilaria is externally hung on a breeding net cage; space between two adjacent net cages in the pond is 1-2 m; 1.0-2.0 kilograms of chrysanthemum gracilaria is hung on each square meter of water level; before stocking, the fries are soaked in fresh water for 5-10 minutes; and 600-800 fries are stocked in each cubic meter of water in the breeding net cage. The method disclosed by the invention can improve the breeding environment of the large yellow croaker relatively well and reduce diseases; and moreover, the germplasm of the large yellow croaker is maintained relatively well, the breeding survival rate is relatively high, and the breeding benefits are relatively high. Therefore, the ecological breeding method for large yellow croaker disclosed by the invention ensures relatively low nitrogen and phosphorus load in the breeding environment, prevents high temperature, realizes relatively good breeding environment and gains relatively high breeding benefits.

Description

technical field [0001] The invention relates to large yellow croaker cultivation, in particular to a pond ecological cultivation method of large yellow croaker. Background technique [0002] Large yellow croaker is one of the main economic fishes in my country's oceans, and it is also an important economic breeding species in my country. The current breeding methods are mainly in cages in coastal ponds or open water bodies. Due to the current extensive pond culture and net cage culture and low management level, the pollution of aquaculture water is relatively heavy, especially pond culture, the exchange of aquaculture water is relatively low, and the load of nitrogen and phosphorus in the aquaculture water is relatively high. The total nitrogen, total phosphorus, and inorganic phosphorus are relatively high, and the breeding habitat is severely damaged, resulting in the degradation of the germplasm of the cultured species, the decline in the production of the culture, and th...

AI Technical Summary

Problems solved by technology

Due to the current extensive pond culture and net cage culture and low management level, the pollution of aquaculture water is relatively heavy, especially pond culture, the exchange of aquaculture water is relatively low, and the load of nitrogen and phosphorus in the aquaculture water is relatively high. The total nitrogen, total phosphorus, and inorganic phosphorus are also relatively high, and the breeding habitat is severely damaged, resulting in the degradation of the germplasm of the cultured species, the decline in the production of the culture, and the decline in the economic benefits of the culture.

The publication number is CN1826879, and the name is a Chinese invention patent application for an ecological breeding method for shallow sea fish and algae. Although it discloses the method of separate polyculture of cage fish and asparagus, on the one hand, it can reduce the self-pollution of shallow sea fish culture , optimize the aquaculture environment, and on the other hand, it also improves the economic benefits of aquaculture; this method only slightly improves the nitrogen and phosphorus in the shallow sea aquaculture water, but the shallow sea is an open water body, and the seawater has good fluidity, so the shallow sea aquaculture water itself is also polluted. Less, the improvement effect of asparagus is not very good, and the separate polyculture method cannot shade the fish in the cage, and cannot prevent the damage of high temperature to the fish. Moreover, this method cannot purify the nitrogen and phosphorus in the seabed sediment