Out-of-season recirculating aquaculture method for micropterus salmoides

Abstract

The invention discloses an out-of-season recirculating aquaculture method for micropterus salmoides, which comprises the following steps of: injecting water into a disinfected water storage tank and a nursery pond in a closed and insulated aquaculture shed or an aquaculture plant at the beginning of November, and controlling an air energy heat pump, the water storage tank, the nursery pond and a water body treatment unit to form a circulating water channel; under the condition of ensuring that the water temperature is 22-25 DEG C and the water quality is clean, water fry are automatically cultivated in the nursery pond or commercially available water fry are cultivated for 55-65 days, and strong seedlings are obtained; 3-5 days before seedling culture is finished, water is injected into the culture pond, a circulating water channel is controlled to be formed among the air energy heat pump, the water storage pond, the culture pond and the water treatment unit, and strong seedlings are transferred into the culture pond under the condition that it is ensured that the water temperature is 24-28 DEG C and the water quality is clean and are sold on the market after being fed for 8 months. The purposes of shortening the breeding period, accelerating fund turnover, improving the pond utilization rate and being high in selling price are achieved.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to an off-season circulating aquaculture method of California sea bass. Background technique [0002] The traditional aquaculture industry follows the path of high input, high output, and high discharge, which is low in utilization of water resources, high in pollution, and unfriendly to the environment. Modern industrial aquaculture is the general direction of industrial development. The indoor circulating water system can stably control the water temperature, is not affected by climate, and is not affected by regions. It can be operated all year round, and has unique advantages in off-season nursery and breeding. Various technical treatments are applied in a temperature-controlled circulating water system to effectively remove food residues, fish excrement, and harmful substances and bacteria carried by the aquaculture water itself, reaching the level of high-quali...

AI Technical Summary

Problems solved by technology

The water temperature in winter and spring in the area north of the Yangtze River is low, which cannot reach the water temperature required for the normal growth of California perch. Local artificial breeding seedlings cannot be released into the pond until the outdoor water temperature rises to about 15°C after April. These situations exist In the first year, the breeding size was small and could not be marketed, but in the second year, the breeding cycle was longer, the risk increased, and the cost was higher.

[0004] Aquaculture has a certain seasonality. In the traditional farming mode, due to the low temperature in winter, most fish stop eating and their growth stagnates, and farmers basically stop farming. Dry ponds and sun-dried ponds are also carried out in winter, so there will be an early stage. The peak season of fish production leads to low prices. Based on the above two conditions, off-season farming is currently on the rise

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