Method for breeding river crabs and crayfishes in same pond

Abstract

The invention provides a method for breeding river crabs and crayfishes in the same pond. The method comprises the breeding processes of pond preparation, larval crab stocking, crayfish with egg stocking, margarya melanoide transferring, first-time fishing and second-time fishing. According to the method, crayfish breeding is introduced into a river crab breeding pond firstly, the problems of time difference and spatial distribution between the river crabs and the crayfishes are successfully solved, the yield of the river crabs and the yield of the crayfishes are not reduced, the economic benefit is high, and the reference value is high. According to the method, engineering transformation does not need to be carried out on an existing river crab breeding pond, the breeding and fishing technology of the crayfishes with the eggs is introduced in good time, and yield-increasing breeding of the crayfishes in one season is successfully achieved within the time period from April to August.

Description

technical field

[0001] The invention relates to a compound culture of river crab and crayfish, in particular to a method for cultivating river crab and crayfish in the same pond. Background technique

[0002] River crab, scientific name Chinese mitten crab, commonly known as crab, is one of the traditional famous aquatic products in my country. It is famous at home and abroad for its rich nutrition and unique flavor. River crab is an important fish farming object in my country.

[0003] Crayfish (Procambarus clarkii), belonging to the crayfish family and the genus Procambarus, is native to northern Mexico and the southern United States. Introduced to my country by Japan in 1929, it has become an important resource of freshwater shrimp in my country, and is widely distributed in the middle and lower reaches of the Yangtze River and the Huaihe River Basin. In 2014, the national crayfish aquaculture area exceeded 8 million mu, the aquaculture output was about 660,000 tons, an...

Examples

Embodiment 1

[0019] 1. Pond conditions: the area of ​​the river crab breeding pond is 20 mu, such as figure 1 As shown, the ridge around the breeding pond is 1.5m higher than the bottom of the ditch, the top width of the ridge is 2.0m, and the slope ratio of the ridge is 1:2.5. 8-10m ditches are excavated around the pond, and the paddles in the center of the pond form the aquatic plant planting area, which is 50-60cm higher than the bottom of the ditch.

[0020] 2. Preparations before breeding: In winter, drain the pond water, first clear the pond, disinfect and sun-dry the pond, and then carry out preparations such as fertilization, rotary tillage of the central field, setting of the anti-escape wall and planting of Elodea.

[0021] The specific operation is: after clearing the pond, pour the whole pool of quicklime into the pond according to the amount of 75kg / mu, add an appropriate amount of water, so that the quicklime will have a violent chemical effect after meeting water; Apply org...

technical field

[0001] The invention relates to a compound culture of river crab and crayfish, in particular to a method for cultivating river crab and crayfish in the same pond. Background technique

[0002] River crab, scientific name Chinese mitten crab, commonly known as crab, is one of the traditional famous aquatic products in my country. It is famous at home and abroad for its rich nutrition and unique flavor. River crab is an important fish farming object in my country.

[0003] Crayfish (Procambarus clarkii), belonging to the crayfish family and the genus Procambarus, is native to northern Mexico and the southern United States. Introduced to my country by Japan in 1929, it has become an important resource of freshwater shrimp in my country, and is widely distributed in the middle and lower reaches of the Yangtze River and the Huaihe River Basin. In 2014, the national crayfish aquaculture area exceeded 8 million mu, the aquaculture output was about 660,000 tons, an...

Examples

Embodiment 1

[0019] 1. Pond conditions: the area of ​​the river crab breeding pond is 20 mu, such as figure 1 As shown, the ridge around the breeding pond is 1.5m higher than the bottom of the ditch, the top width of the ridge is 2.0m, and the slope ratio of the ridge is 1:2.5. 8-10m ditches are excavated around the pond, and the paddles in the center of the pond form the aquatic plant planting area, which is 50-60cm higher than the bottom of the ditch.

[0020] 2. Preparations before breeding: In winter, drain the pond water, first clear the pond, disinfect and sun-dry the pond, and then carry out preparations such as fertilization, rotary tillage of the central field, setting of the anti-escape wall and planting of Elodea.

[0021] The specific operation is: after clearing the pond, pour the whole pool of quicklime into the pond according to the amount of 75kg / mu, add an appropriate amount of water, so that the quicklime will have a violent chemical effect after meeting water; Apply org...

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