Enclosure aquaculture method of river crab lake area

A breeding method and technology of lake area net, which is applied in the field of river crab lake area net breeding, can solve the problems of low breeding survival rate and unoptimistic production output, and achieve the effects of no cultivation pollution, improved quality and output, and improved technology

Inactive Publication Date: 2015-06-03
江寿文
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is delicious, nutritious, and has high economic value. At present, river crab farming techniques are diverse, but due to various management and site selection reasons, the survival rate of farming is extremely low, and the production output is not optimistic.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A method for cultivating river crabs in a net enclosure in a lake area, comprising the following steps:

[0034] (1), water area selection:

[0035] Choose waters with a flat lake bottom, slight currents, lush submerged plants, rich benthic animals, fresh water, rich dissolved oxygen, a pH value of 7.0 or more, and a normal water level between 150 cm for breeding.

[0036] (2), the construction of fence facilities:

[0037] ①. The setting of the fence: the size of the fence is 30 mu. The fence adopts two layers of nets. The outer layer is a protective net and the inner layer is an anti-escape net. The distance between the two layers of nets is 5 meters. The uppermost end of the layer is connected with a "T"-shaped upside-down mesh or a plastic film with a width of 40 cm. The lower end of the mesh is connected with a gabion and buried in the bottom of the lake. The mesh is fixed on the outside with bamboo stakes. The fence height is 3.0 meters.

[0038] ②. Temporary b...

Embodiment 2

[0057] A method for cultivating river crabs in a net enclosure in a lake area, comprising the following steps:

[0058] (1), water area selection:

[0059] Choose a lake with a flat bottom, slight currents, lush submerged plants, rich benthic animals, fresh water, rich dissolved oxygen, a pH value above 7.0, and a normal water level between 80 cm for breeding.

[0060] (2), the construction of fence facilities:

[0061] ①. The setting of the net enclosure: the size of the net enclosure is 20 mu. The net enclosure adopts two layers of nets, the outer layer is a protective net, and the inner layer is an anti-escape net. The distance between the two layers of nets is 5 meters. The uppermost end of the layer is connected with a "T"-shaped upside-down mesh or a plastic film with a width of 20 cm. The lower end of the mesh is connected with a gabion and buried in the bottom of the lake. The mesh is fixed on the outside with bamboo stakes. The fence height is 2.5 meters.

[0062] ...

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PUM

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Abstract

The invention discloses an enclosure aquaculture method of a river crab lake area, and refers to the technical field of aquaculture. The enclosure aquaculture method comprises the following steps: section of water area, construction of enclosure facility, seedling stocking, bait feeding, disease prevention and control, daily management, catching and sales. The enclosure aquaculture method has the following beneficial effects: the enclosure aquaculture method fully uses the production resources, needs not professional equipment, and is free from cultivation pollution; the cultivating technology standard is regular, the feeding process is scientific and norm; therefore, the aquaculture quality is greatly improved, and thereby the quality yield of the river crab is improved.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to a method for cultivating river crabs in a net enclosure in a lake area. Background technique [0002] River crabs, also called "crabs" or "hair crabs", are crustaceans of the phylum Arthropoda. The carapace formed by the combination of the head and the chest is square and hard. There is a pair of eyes on the front of the body, and two pairs of very sharp crab teeth on the side. The first pair of appendages of the crab are called chelicerae, and the surface is covered with fluff; behind the chelicerae, there are 4 pairs of walking legs, with flat sides and longer; the abdominal limbs have degenerated. The male and female of the river crab can be distinguished from its abdomen: the abdomen of the female is round, and the abdomen of the male is triangular. It is delicious, nutritious, and has high economic value. At present, there are various culture techniques for river crab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 江寿文
Owner 江寿文
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