Freshwater shrimp and river crab double main farming method

A green shrimp and river crab technology, applied in fish farming, application, climate change adaptation and other directions, can solve the problems of difficulty and difficulty in breeding, and achieve the effect of increasing the production of green shrimp, strengthening management, and getting rid of the risk of river crab breeding.

Inactive Publication Date: 2013-11-27
江苏省水产技术推广站
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitation of the breeding area, it is difficult to breed shrimp and crabs at the same time.
Under the traditional shrimp and crab co-cultivation technology, the shrimp and crab are cultivated according to a relatively economical ratio.

Method used

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  • Freshwater shrimp and river crab double main farming method

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Embodiment Construction

[0034] A kind of freshwater shrimp and river crab double main raising method, concrete steps are as follows:

[0035] 1) Preparation before stocking, the steps include:

[0036] 1.1) Select a pond; 1.2) Disinfect the clear pond; 1.3) Inject water and fertilize; 1.4) Plant aquatic plants, and the planting area of ​​aquatic plants should be controlled at 20% to 40% of the pond area;

[0037] 2) Seed stocking, the method is as follows:

[0038] Stocking time: in late January every year, select the daytime maximum temperature to be stable above 7°C before stocking; stock 700 to 800 crabs with a specification of 150 / kg to 170 / kg per mu; From the second to the fourth day, young green shrimps are stocked, the stocking amount per mu is 30kg±5 kg, and the size is 800 tails / kg to 1500 tails / kg;

[0039] In the first ten days of August of the same year, after the maximum daytime temperature was stabilized below 32°C, young freshwater prawns were stocked. kg±0.5kg, the specification is...

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Abstract

The invention discloses a freshwater shrimp and river crab double main farming method which includes the steps that firstly, preparation is performed before farming; secondly, farming of seeds is performed; thirdly, under farming and management, freshwater shrimps are caught all the year round, the large freshwater shrimps are caught and the small freshwater shrimps remain; shrimps farmed in January are caught since May, and the large-specification freshwater shrimps are caught in time; shrimps farmed in August are caught since the end of September; river crabs are caught since October. According to the freshwater shrimp and river crab double main farming method, by increasing the freshwater shrimp farming percentage in a river crab farming pond and enhancing the freshwater shrimp farming management, the yield of the freshwater shrimps is improved, and the farming risks of river crabs are effectively avoided.

Description

technical field [0001] The technical proposal belongs to the technical field of aquaculture, and specifically relates to a double-main raising method for freshwater shrimp and river crab. Background technique [0002] In recent years, with the continuous expansion of the cultivation area of ​​river crabs in my country, river crabs have been affected by factors such as the increase in farming output and the instability of market prices, resulting in the risk of river crab farming. Freshwater shrimp is favored by farmers because of its fast growth rate, low investment cost, and stable market price. However, due to the limitation of the breeding area, it is difficult to breed shrimp and crabs at the same time. Under the traditional shrimp and crab co-cultivation technology, it is very difficult to breed shrimp and crabs according to a relatively economical ratio, and it is not easy to make both shrimps and crabs have an actual output corresponding to the theoretical output whe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00A01K67/033
CPCY02A40/81
Inventor 陈焕根龚培培邹宏海王苗苗郭闯盖建军梅肖乐
Owner 江苏省水产技术推广站
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