Pond ground cage for catching crayfishes

Abstract

The invention discloses a pond ground cage for catching crayfishes, comprising a barrel-shaped netted bag and keels, wherein, the keels are equally spaced and fixed on the barrel-shaped netted bag, a smooth board is arranged in the opening of the ground cage, the width of the smooth board is two fifth to three fifth of the perimeter of the cage opening and the length of the smooth board is more than 20 cm. The pond ground cage is designed according to the different climbing habits of crayfishes and river crabs, namely, the crayfishes can not climb up with claws but the river crabs do the opposite thing; thus, the pond ground cage for catching crayfishes in a crayfish and crab mixed-culturing pond can reduce the number of the crabs caught in the cage farthest, prevent the crayfishes and the river crabs from fighting with each other and facilitate separation of river crabs and crayfishes. The invention saves time and labor and has properties of economy and practicability due to simple structure, particularly applicable to ground cage catching of crayfishes in the crayfishes and river crabs mixed-culturing pond, reducing the labor intensity for manual separation and improving the culture benefit.

Description

Technical field: [0001] The invention relates to a fishing tool for crayfish and river crab polyculture ponds, in particular to a ground cage specially used for crayfish and river crab polyculture ponds. Background technique: [0002] Crayfish is a common aquatic species in my country. Because of its delicious taste and high nutritional value, in recent years, more and more people like to eat crayfish. The market demand for crayfish is also increasing year by year, and domestic sales and foreign trade are booming. great situation. Due to the prominent contradiction between supply and demand of crayfish, more and more farmers have begun to try various crayfish farming practices, such as the main mode of pond farming, the polyculture mode of fish and shrimp in ponds, the polyculture mode of shrimp and crab in ponds, and the aquatic economic plant fields (ponds). ) breeding mode, etc. Among them, the pond shrimp and crab polyculture model is more and more used by ordinary farm...

AI Technical Summary

Problems solved by technology

At present, the trapping tools for crayfish are conventional ground cages. In actual trapping activities, river crabs in the pond will inevitably be caught in the ground cages, which will not only cause crayfish and river crabs to kill each other, causing losses, but also increasing Increased the difficulty of sorting, labor-intensive and time-consuming

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