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Method for preventing and controlling generation of cladophora and/or enteromorpha in stichopus japonicas aquaculture pond by virtue of ulva

A technique for cultivating Clado algae and ginseng, applied in chemical instruments and methods, botanical equipment and methods, applications, etc., can solve the problems of loss of diversity of coastal marine ecosystems, impact on ecological environment, and aggravated deterioration of ecological environment, etc. Achieve the effects of reducing breeding costs and breeding risks, excellent control effects, and reducing environmental pollution

Inactive Publication Date: 2014-10-22
DALIAN OCEAN UNIV +1
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, the herbicides used had a very serious impact on the ecological environment of sea cucumbers, pond water environment and surrounding sea areas.
Excessive dosage of medicine will lead to poisoning and death of sea cucumber individuals. When the dosage of medicine is small, the medicine will accumulate and remain in the body of sea cucumber, which will affect a series of physiological and biochemical reactions in the body of sea cucumber, and eventually lead to the decline of immunity and disease resistance.
In addition, the discharge of herbicides into the surrounding sea will aggravate the deterioration of the ecological environment, resulting in the loss of the diversity of the near-shore marine ecosystem

Method used

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Embodiment Construction

[0024] 1. Collection and temporary maintenance of Ulva: During the ebb tide period, a large number of seaweed Ulva are collected in the inter-tidal period with reefs, and brought back indoors and placed 50-100m away. 3 Temporary cultivation in cement ponds, temporary cultivation density is 20-30 kg / m 3 , the water temperature is 10-18°C, the salinity is 25-35‰, the light is 3500-5000lx, and the water in the whole pool is changed once a day.

[0025] 2. Reconstruction of sea cucumber ponds: before inoculating Ulva, a certain amount of artificial stone reefs need to be placed on the four sides of the pond, with a thickness of 0.1-0.2 m 3 The gravel is the best, and the dosage is 0.5 m per square meter of pool bottom. 3 Gravel left and right. Gravel can be used as the attachment base for Ulva growth.

[0026] 3. Ulva inoculation: Ulva can be inoculated after the ice melts in sea cucumber culture ponds in early spring. The inoculation is usually carried out on a sunny day with ...

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Abstract

The invention discloses a method for preventing and controlling the generation of cladophora and / or enteromorpha in a stichopus japonicas aquaculture pond by virtue of ulva. The method comprises the following steps of collecting and temporarily culturing ulva; reconstructing the stichopus japonicas aquaculture pond; and inoculating ulva and carrying out daily management. The method disclosed by the invention, compared with the prior art, has the advantages of low cost, convenience in management, environment friendliness and no toxic and side effects and is simple and green.

Description

technical field [0001] The invention relates to a method for preventing and controlling the growth of harmful algae in ponds, in particular to a method for using Ulva to prevent and control the outbreak of Cladophora and / or Enteromorpha in sea cucumber culture ponds. Background technique [0002] With the rise of the sea cucumber farming industry, the sea cucumber pond culture mode with high feed and seedlings has developed rapidly, but due to the defects of this culture mode itself, it has brought many negative effects, such as the loss of organic matter in the culture ponds. Excessive load and unbalanced ratio of nutrient salts have caused the outbreak of predatory Cladophora and Enteromorpha, which in turn caused serious problems such as deterioration of water quality in aquaculture ponds and flooding of diseases. And in sea cucumber culture ponds of different scales (30-100 mu) and types (port circles, cofferdams, earthen ponds), outbreaks of Cladophora and Enteromorpha ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32A01G33/00
CPCY02A40/80
Inventor 殷旭旺刘钢曹善茂赵文陈晓霞
Owner DALIAN OCEAN UNIV
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