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Prevention and control method for green algae in seawater pond based on physical shading layer

A kind of shading layer and physical technology, applied in the field of control of green algae flourishing in ponds, can solve the problems of low efficiency, long time, high concentration of drug residues, etc., and achieve the effect of overcoming the need for more labor, easy availability of materials, and suppression of outbreaks

Inactive Publication Date: 2020-07-28
DALIAN MARITIME UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The former uses rakes and other tools to salvage manually or mechanically. The efficiency is low and the cost of salvage is high; the latter is killed by applying agricultural herbicides (such as propazone, etc.), although the efficiency is high, but the drug residues High concentration and long time will affect food safety
The invention patent "Method for preventing and controlling moss in sea cucumber pond based on seaweed floating bed" (application number: 201811063461.8) discloses that laying artificial seaweed floating bed on the surface of the water body suppresses the growth of green algae at the bottom of the pond by blocking light energy and absorbing nutrients. In the method, the construction of seaweed floating bed has high requirements for the screening and seedling cultivation of engineering algae, which is not conducive to popularization

Method used

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  • Prevention and control method for green algae in seawater pond based on physical shading layer
  • Prevention and control method for green algae in seawater pond based on physical shading layer

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Embodiment 1

[0025] In this embodiment, a physical shading layer is used to suppress the outbreak of green algae by constructing a physical shading layer in sea cucumber culture ponds in Pikou area, Liaoning Province, to further describe the present invention in detail. The types of green algae in sea cucumber culture ponds in Pikou area, Liaoning Province are mainly Enteromorpha, Enteromorpha flatus, Enteromorpha enteromorpha.

[0026] 1. The matrix used for the shading raft frame is black and polyethylene material, and the shading rate is 95%.

[0027] 2. Laying of physical shading layer in sea cucumber ponds: In the middle and late March, lay shading rafts in the reef area where green algae grow in sea cucumber ponds, and each shading raft covers an area of ​​50*2 meters 2 , one shade raft frame covers one reef, each shade raft frame is provided with 5 pieces of sunshade net 5, and the size of a single piece of sunshade net 5 is 10*2 meters 2 , 5 pieces of sunshade nets 5 are spliced ​...

Embodiment 2

[0030] In this embodiment, a physical shading layer is used to suppress the outbreak of green algae by constructing a physical shading layer in a prawn culture pond in Lvshun, Liaoning, and further describes the present invention in detail. The main types of green algae in shrimp culture ponds in Lvshun, Liaoning Province are Cladophylla, Enteromorpha, and Cleophyte.

[0031] 1. The matrix used for the shading raft frame is black and polyethylene material, and the shading rate is 95%.

[0032] 2. Laying of physical shading layer in the prawn pond: in the middle and late March, in the distribution area of ​​green algae in the prawn pond, lay a shading raft along the water inlet direction of the pond, and the coverage area of ​​a single shading raft is 80*2 meters 2 , a single light-shading raft frame is provided with 5 pieces of sunshade nets 5, and the 5 pieces of sunshade nets 5 are spliced ​​in the length direction and covered on the rectangular frame formed by the floating ...

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Abstract

The invention discloses a prevention and control method for green algae in a seawater pond based on a physical shading layer. According to the method, a physical shading layer taking a black shading net as a matrix is constructed on the lower layer of a water body in the larva stage of the green algae in the pond mainly according to the life history characteristics of the green algae in the pond,and the vigorous growth of the green algae in the seawater pond is prevented and controlled by blocking light energy supply.

Description

technical field [0001] The invention relates to a method for controlling the flourishing of green algae in ponds by laying a physical light-shielding layer to block the supply of light energy. Background technique [0002] Seawater pond culture is a kind of sea treasures (such as prawns, sea cucumbers, hard shell clams, perch, etc.) culture mode widely used in my country's coastal areas. Due to the shallow water depth, high transparency and rich nutrition, some green algae (mainly Ulva, Cladophylla and Rhizoctonia genus) flourish frequently. Prosperity of green algae, on the one hand, will cause supersaturation of dissolved oxygen in the water body or unstable solubility. On the other hand, the green algae will rot during the high temperature period in summer, causing the water quality at the bottom of the pool to deteriorate and posing a serious threat to the cultured organisms. Therefore, the problem of green algae is a problem that plagues seawater. A major problem in po...

Claims

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Application Information

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IPC IPC(8): C02F1/00
CPCC02F1/008C02F2103/007
Inventor 巩宁邵魁双刘玉安顾炎斌柳圭泽叶金清
Owner DALIAN MARITIME UNIVERSITY
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