Intermediate cultivating method capable of improving survival rate of pinctada maxima spats

Abstract

The invention discloses an intermediate cultivating method capable of improving the survival rate of pinctada maxima spats and belongs to the technical field of shellfish culture. The intermediate cultivating method comprises the following steps of choosing 5-20 acres of shrimp pond with the water storage depth between 1.5m and 2.5m, applying fertilizers to cultivate unit-cell algae baits, putting litopenaeus vannamei shrimp seeds, transferring the seeds to 60-mesh polyethylene mesh bags from attachment boards when specifications of the spats reach about 2mm, then suspending and cultivating the spats in the shrimp pond, cultivating and managing the spats, clearing up attachment on the mesh bags every 5-7 days, cleaning up float sludge to keep smoothness of water inside and outside the mesh bags, using 20-mesh mesh bags when the specifications of the spats reach 6-8mm, and using 10-mesh mesh bags when the specifications of the spats reach 10.0-15.0mm. In addition, a bottom material of the bottom of the shrimp pond is sludge and sand, water can be drained in and out of the shrimp pond conveniently, the body length of each litopenaeus vannamei shrimp seed is 1.0-1.5cm, and the density of the litopenaeus vannamei shrimp seeds is 20,000-30,000 per acre. In the 60-mesh mesh bags, the density of the litopenaeus vannamei shrimp seeds is 5,000-6,000 per bag. In the 20-mesh mesh bags, the density of the litopenaeus vannamei shrimp seeds is 2,500-3,000 per bag. In the 10-mesh mesh bags, the density of the litopenaeus vannamei shrimp seeds is 800-1,000 per bag. The intermediate cultivating method is simple in step, low in cost and capable of effectively improving the survival rate of pinctada maxima spats.

Description

technical field [0001] The invention relates to a method for improving the survival rate of pinnacle oyster seedlings, in particular to an intermediate cultivation method for improving the survival rate of pinnata pinnata seedlings, and belongs to the technical field of shellfish cultivation. Background technique [0002] Greater Pearl Oyster ( Pinctada maxima Jameson), also known as white butterfly shell, is one of the ideal mother oysters recognized in the world to cultivate large-scale high-quality seawater pearls. It is mainly distributed in the coastal waters of Australia in the South Pacific and Southeast Asian countries in the West Pacific; in my country, it is mainly distributed in the coast of Hainan Province. , Leizhou, Xuwen in the Leizhou Peninsula of Guangdong Province, and Weizhou Island in Guangxi. Since the mid-1980s, due to the serious pollution of the sea area and the destruction of the ecological environment, the survival rate of the large pearl oyster in ...

AI Technical Summary

Problems solved by technology

Since the mid-1980s, due to the serious pollution of the sea area and the destruction of the ecological environment, the survival rate of the large pearl oyster in the natural sea area has been low; coupled with excessive marine fishing, the large pearl oyster has faced survival difficulties in my country

Since the 1970s, many relevant scientific research units and scientific and technological personnel in my country have tried to solve the problem of seedling survival rate during sea area cultivation from different angles and ways, but have not been able to obtain a good solution, which seriously restricts The industrialization progress of my country's pinnacle oyster