Three-dimensional culturing method for freshwater shrimps

Abstract

The invention discloses a three-dimensional culturing method for freshwater shrimps. The method comprises the steps of configuring oxygen-enriching, irrigation and drainage devices, setting three-dimensional culturing facilities, controlling the stocking of fries, carrying out scientific feeding, and taking catch rotation measures, wherein the step of setting three-dimensional culturing facilities can be implemented concretely through the following three approaches: 1, knotless summer flower fishing net pieces (10*33 meshes) are paved in the middle of a shrimp pond, fixed at positions 30-40cm away from the water surface and arranged in the shape of roof truss with a gradient of 15-20 degrees, wherein the width of the net piece in each row is 30-40m, and the length of the net piece is determined according to the area of the shrimp pond, two rows of net pieces are arranged in a pond with an area of less than 5 mu, four rows of net pieces are arranged in a pond with an area of more than 5 mu, and the area of the net pieces accounts for 20-30% of that of a shrimp pond; 2, aquatic weeds are planted in a shallow water zone (1m away from the edge of a shrimp pond) around the shrimp pond, wherein the aquatic weed belt is about 1m in width, and the area of the aquatic weed belt accounts for 10-20% of that of the shrimp pond; and 3, tea-branch bundles are bundled by using thin tea branches, and the tea-branch bundles are mounted around a shrimp pond so as to replace the planting of aquatic weeds. By using the method disclosed by the invention, the disease incidence rate of shrimps in the pond can be effectively reduced, and the risk of culturing can be greatly reduced.

Description

technical field [0001] The invention relates to a technique in the technical field of freshwater aquaculture, in particular to a three-dimensional aquaculture method for freshwater shrimp. Background technique [0002] Freshwater prawn, also known as river prawn, scientific name Japanese giant river prawn, is a kind of freshwater prawn, which is widely distributed in rivers, lakes, reservoirs and ponds, and is produced all year round. In the past, it was mostly wild. In recent years, artificial breeding has been carried out in many areas. The shrimp seedlings bred in that year can grow into commercial shrimps after 3 to 4 months of feeding. Its meat is tender, nutritious, delicious, and has medicinal value. It is a good food therapy and has always been loved by people. As far as the current status of freshwater shrimp farming is concerned, my country has carried out a lot of fruitful work in artificial breeding of freshwater shrimp and pond culture. The State Intellectual ...

AI Technical Summary

Problems solved by technology

This method overcomes the shortcomings of high morbidity and uneven specifications of freshwater shrimp artificial breeding, and effectively improves the commodity rate, but at the same time, there are the following shortcomings: First, there are too many aquatic plants, which account for 60-70% of the water surface of shrimp ponds , Absorbing a lot of fertilizer makes the water quality lean, affecting the growth of freshwater shrimp, and it is easy to rot at high temperature, which deteriorates the water quality and causes pond flooding. Daily pond patrol management is difficult

The second is to kill the green shrimp larvae in the mid-term reproduction with quicklime. Although the specifications of the adult shrimp are guaranteed, the total output of the shrimp pond is low (about 60-65 kg / mu), which affects the breeding efficiency.