Recoil two-layer automatic pollutant collection and discharge breeding method of Penaeus japonicus Bate and breeding device

Abstract

The invention provides a recoil two-layer automatic pollutant collection and discharge breeding method of Penaeus japonicus Bate and a breeding device. The method comprises the following steps: a. firstly disinfecting a breeding pond, throwing shrimp larvae into the pond, feeding baits, inflating for oxygenation, and then discharging pollutants concentrated on a cover net in the middle part of the pond by water circulation; b. eliminating the pollutants deposited at a sand layer on a sand-barrier net by two forward sand-washing layers such as a water change and drainage sand-washing layer and an inflation up-flow and vertical convection sand-washing layer as well as a recoil timing sand-washing layer; and c. setting the cover nets of a large-sized mesh, a medium-sized mesh and a small-sized mesh on an well mouth of a pollutant discharge well sequentially, removing the cover net of the small-sized mesh and the cover net of the medium-sized mesh step by step, and remaining the cover net of the large-sized mesh until the Penaeus japonicus Bate are obtained.

Description

Technical field: [0001] The invention relates to an aquaculture method and a culture device, in particular to a recoil type second-layer-bottom automatic sewage collection and discharge culture method for Penaeus japonicus; meanwhile, the invention also relates to a culture device used in the culture method. Background technique: [0002] Penaeus japonicus, also known as car shrimp, flower shrimp, bamboo shrimp, and zebra shrimp, are widely distributed in the Indian and Pacific regions, and are distributed along the south coast of Jiangsu Province in my country. Penaeus japonicus has the characteristics of rapid growth, strong disease resistance, and long-term immortality out of water. It is suitable for long-distance dry transportation and live sales, and is an important foreign exchange-earning fishery product. Japanese prawns are firm in meat, rich in protein, delicious in taste, and have a unique flavor when eaten fresh. They are very popular in domestic and foreign mark...

AI Technical Summary

Problems solved by technology

If the water in the sand layer is still stagnant water, and the water temperature is high, the dirt will quickly rot and stink, making the sand layer black, and Penaeus japonicus will not be able to inhabit, leading to disease and death.

At present, a two-layer bottom sand cultivation device is used, so that water is added from the upper part and discharged from the bottom of the sand. Since the sand particles cannot be too thick, the sand layer cannot be too thin, and there is a sand retaining net under the sand, the dirt particles will still accumulate in the retaining net. In the gaps between the sand grains on the sand net, over time, the sand layer will still turn black and smelly, resulting in the problem that the Japanese prawns cannot live and die

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