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A kind of river crab ecological breeding method

An ecological breeding and river crab technology, applied in fish farming, climate change adaptation, animal husbandry and other directions, can solve problems such as affecting the enthusiasm and stability of river crab breeding, affecting food security, increasing food consumption, etc. The effect of outputting and reducing investment

Active Publication Date: 2021-02-05
山东黄河口大闸蟹有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Crab bait accounts for about 70% of the breeding cost of river crabs, which is the key factor affecting the breeding benefits of river crabs. Especially in the north, it is difficult to guarantee the benefits of breeding river crabs every year due to low technology and short growth period, which greatly affects the enthusiasm and stability of river crab farming. At the same time, increased food consumption has affected my country's food security

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] An ecological breeding method for river crabs, including the cultivation of river crab feed and the cultivation of river crabs, wherein the advanced river crab feed is planted in the farmland, and then the farmland is transformed into a breeding pond for the cultivation of river crabs, so as to realize the ecological cultivation of two harvests a year In this way, the species of plants planted in river crab feed include winter wheat, winter barley, milk vetch, rapeseed and various overwintering pasture vegetables and traditional Chinese medicine crops. Harvesting is carried out in the spring of the second year. After harvesting, the feed is packaged and fermented to be used as feed for crab feeding; river crab breeding includes the construction of breeding ponds, stocking of river crabs, aquatic plant cultivation, feeding management, and temporary rearing in temporary ponds;

[0021] Breeding pond construction: use semi-ground type and surrounded by ditches in the middle...

Embodiment 2

[0034] Aquaculture with aquatic plants: the area covered by aquatic plants generally accounts for about 1 / 3 to 1 / 2 of the breeding pond; the aquatic plants in the breeding pond should not be too single, at least 2 or more types are better, and a reasonable combination is required. Not only the quality of river crabs is significantly improved, but also the average output can be More than 20% increase, among which several types of aquatic plants are matched: ①25% Hydrilla verticillium, 15% Elodea, 60% Erythrophyll; ②60% Hydrilla verticillium, 15% Elodea, 25% hornwort; ③25% Microtooth eye Zi Cai, 15% Elodea, 60% Elephant Grass; Elodea germinates early, grows fast, and is easy to block water channels. When planting Elodea, a certain gap must be left (0.5 meters apart, row spacing 2 meters) ), yellow silk grass can be planted in the gaps of Elodea to keep the water flowing smoothly during water drainage and avoid dead ends caused by too dense aquatic plants.

Embodiment 3

[0036] water quality management

[0037] Water intake: Use a 80-100 mesh screen to cover the water inlet to filter wild fish and fish eggs, otherwise these wild fish eggs will enter the pond, which will bring hidden dangers to the breeding;

[0038] Disinfection: After entering the water, use Bianwei or Lvkanglu (1 bottle of 2 to 3 acres) to disinfect to eliminate bacteria and factors that hinder fertilizer and water;

[0039] Detoxification: After 2 days, choose a sunny day in the morning to dilute with Detoxification Super Cool or Purifying Water King (1 bottle of 3 mu. m) and then sprinkle the whole pool to eliminate disinfectant residues in the water, complex heavy metals, optimize the growth environment of algae, and achieve twice the result with half the effort;

[0040] Sufficient basal fertilizer application: In order to cultivate excellent plankton and water quality, it is the key to apply sufficient basal fertilizer. If the basal fertilizer is not applied enough, the...

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Abstract

An ecological breeding method for river crabs, including the cultivation of river crab feed and the cultivation of river crabs, wherein the advanced river crab feed is planted in the farmland, and then the farmland is transformed into a breeding pond for the cultivation of river crabs, so as to realize the ecological cultivation of two harvests a year In this way, the species of plants planted in river crab feed include winter wheat, winter barley, milk vetch, rapeseed and various overwintering pasture vegetables and traditional Chinese medicine crops. Harvesting is carried out in the spring of the second year. After harvesting, the feed is packaged and fermented to be used as feed for crab feeding; river crab breeding includes the construction of breeding ponds, stocking river crabs, aquatic plant cultivation, feeding management, and temporary breeding in temporary breeding ponds; the ecological breeding method is through feeding The method of growing grain and river crabs for more than one year has effectively solved the difficult problem of river crab breeding.

Description

technical field [0001] The invention relates to the technical field of river crab cultivation, in particular to a method for ecological cultivation of river crabs. Background technique [0002] The scientific name of river crab is Chinese mitten crab, which is a rare freshwater product, also known as hairy crab and crab. It has delicious meat and unique flavor. It has the highest economic value among more than 500 kinds of freshwater crabs in my country. It is a special product of our country. It grows in freshwater and breeds in seawater. For crabs, since the 1980s, the production form of river crabs has changed from natural fishing to artificial breeding, and has formed a large scale of production, becoming a pillar industry in my country's freshwater aquaculture. [0003] Crab bait accounts for about 70% of the breeding cost of river crabs, which is a key factor affecting the breeding benefits of river crabs. Especially in the north, it is difficult to guarantee the benefi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/59A23K50/80
CPCA23K50/80A01K61/59Y02A40/81Y02A40/818
Inventor 高吉存徐德芳李正柱范庆明王涛
Owner 山东黄河口大闸蟹有限公司
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