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Ecological method for breeding fish and algae in shallow sea

An ecological farming and shallow sea technology, applied in botany equipment and methods, fish farming, algae products, etc., can solve the problems of lack of large algae farming, etc., and achieve the effect of enhancing self-purification ability, good economic benefits, and low cost

Inactive Publication Date: 2006-09-06
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the warmer seasons, such as summer and early autumn, there is a lack of macroalgae culture

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The fish culture cages commonly used in the prior art are used to culture Asparagus in the natural fish culture area of ​​Guzhen Bay in Qingdao (water temperature of 13.0-25.1℃). The culture method is to culture the fish every 1 meter along the circumference of the cage. rope. It adopts the method of hanging the seedlings and hanging. Each rope-clamped seedling part is about 1 meter, with 16-18 clusters of seedlings, each cluster of seedlings is 13-15 cm long, and each rope-clamped seedling is 0.1 kg. The asparagus is 1 to 2 meters above the water, and the stone falls. In the breeding process, as a large algae, Asparagus can effectively utilize the dissolved NP nutrients in the aquaculture water body and play a role in purifying water quality. After the asparagus grows up, marine aquaculture products are added, which improves the economic efficiency of aquaculture.

[0015] The result: both fish and asparagus grow well. From May 15th to July 19th of a certain year, about 65...

Embodiment 2

[0018] The difference between this embodiment and Embodiment 1 is:

[0019] The asparagus used is from the coast of Guangdong (water temperature in the sea area is 15.4~26.5℃). Asparagus is cultivated on a shellfish breeding raft near the fish cage with a rope spacing of 0.8m.

[0020] The result: both fish and asparagus grow well. From May 15 to July 19 of a certain year, about 65 days, Asparagus has a 76-fold increase, and the yield per rope reaches 7.6 kg. The yield of fresh asparagus per mu also exceeds 3000 kg.

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Abstract

The invention relates to the aquaculture technique, which in detail is an ecological cultivating method for shallow sea fishes. In china northern fish cultivating areas, thermostable and large-scale algae such as asparagus are mixed cultivated to improve the culturing environment. The invention makes full use of asparagus to adsorb nitrogen and phosphorous to reduce water pollution; and at the same, the asparagus is an important economic algae, for which the economic benefit is increased. In conclusion, the invention possesses both ecological benefit and economic benefit, and is especially suitable for northern parts in China.

Description

Technical field [0001] The invention relates to aquaculture technology, in particular to an ecological method for cultivating shallow sea fish algae. Background technique [0002] At present, shallow sea cage fish culture is developing rapidly in northern my country. However, a single-species breeding model is mainly used. Waste bait produced by fish farming, feces and excrement discharged by fish often increase the nutrient content of the water body and decrease the dissolved oxygen, leading to eutrophication and sediment pollution. This ecological problem has severely restricted the development of shallow sea aquaculture in northern my country. It can be seen that the shallow sea fish culture technology currently adopted by people does not consider the treatment and reuse of pollutants. [0003] The key to the sustainable development of coastal fish aquaculture is to control the aquaculture waste within the self-purification capacity of the aquaculture water body. One way is to...

Claims

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Application Information

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IPC IPC(8): A01K61/00A01H13/00
CPCY02A40/81
Inventor 周毅杨红生毛玉泽刘鹰张涛张福绥
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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