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Lake branch zizania caduciflora treatment method for aquaculture in great lake

A technology of wild rice grass and lake bottom silt, applied in water conservancy projects, sea area engineering, construction, etc., can solve the problems of destroying water body ecology, deterioration of water quality in waters densely covered with wild rice grass, and reduction of breeding benefits

Active Publication Date: 2016-11-23
王火生
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The measure of using aerators to control ammonia nitrogen in pond water is not applicable to large lake culture; the use of photosynthetic bacteria to splash only has a certain short-term effect
Planting a small amount of aquatic phytoplankton such as water hyacinth, etc., when the planting area does not exceed 1-5%, can absorb toxic substances such as ammonia nitrogen; but natural bamboo grass is like a piece of airtight natural jungle, which prevents the flow of water and shields toxic and harmful substances from the outside world. The exchange will deteriorate the water quality of the waters densely covered with wild rice weeds, destroy the ecology of the water body, and greatly reduce the breeding benefits

Method used

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  • Lake branch zizania caduciflora treatment method for aquaculture in great lake

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Experimental program
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Effect test

Embodiment 1

[0019] Embodiment 1: a kind of method for the control of branched water grass in the lake cultured in a large lake, excavating a ditch system in the area where the branched water grass is densely grown in the lake, and the ditch system is formed by the horizontal ditch 21 excavated along the coastline 11 and the horizontal ditch 21. The longitudinal ditch 31 crosses and extends toward the center of the lake; the horizontal ditch 21 is close to the shoreline in the dry season, the ditch is 2 meters wide, and the ditch is deep enough to dig out the silt to the hard subsoil, and the water depth is not less than 1 meter in the dry season; The distance between the ditch and the horizontal ditch is 100 meters; the vertical ditch 31 is intersected with the horizontal ditch 21 and extends to the center of the lake. The degree is to dig out the silt at the bottom of the lake.

Embodiment 2

[0020] Embodiment 2: a kind of method for the control of branched waterweed grass in a large lake culture, excavating a ditch system in the area where the lake branched water grass is densely grown, and the ditch system is formed by the horizontal ditch 21 excavated along the coastline 11 and the horizontal ditch 21. The longitudinal ditch 31 crosses and extends toward the center of the lake; the horizontal ditch 21 is close to the shoreline in the dry season, the ditch is 3 meters wide, and the ditch is deep enough to dig out the silt to the hard subsoil, and the water depth is not less than 1 meter in the dry season; The distance between the ditch and the horizontal ditch is 200 meters; the vertical ditch 31 is intersected with the horizontal ditch 21 and extends to the center of the lake. The degree is to dig out the silt at the bottom of the lake. The planar distribution shape of the horizontal grooves 21 and the vertical grooves 31 is E-shaped.

Embodiment 3

[0021] Embodiment 3: a kind of method for the management of the branched water grass of the lake cultured in the big lake, excavate the ditch system in the densely grown area of ​​the lake branched water grass, and the ditch system is formed by the horizontal ditch 21 excavated along the coastline 11 and the horizontal ditch 21. The longitudinal ditch 31 crosses and extends toward the center of the lake; the horizontal ditch 21 is close to the shoreline in the dry season, the ditch is 2 meters wide, and the ditch is deep enough to dig out the silt to the hard subsoil, and the water depth is not less than 1 meter in the dry season; The distance between the ditch and the horizontal ditch is 50 meters; the vertical ditch 31 is intersected with the horizontal ditch 21 and extends to the center of the lake. The degree is to dig out the silt at the bottom of the lake. The planar distribution shape of the horizontal groove 21 and the vertical groove 31 is Feng-shaped, and the bottom ...

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Abstract

The invention relates to the field of aquaculture, in particular to a lake branch zizania caduciflora treatment method for aquaculture in a great lake. The lake branch zizania caduciflora treatment method for aquaculture in the great lake is characterized by including the following steps that (1) transverse trenches are dug along the bank, the transverse trenches are close to the bank in a dry season, the width of the transverse trenches is 2-3 meters, the depth of the transverse trenches meets the requirement that sludge is excavated out until hard subsoil, the water depth is not lower than 1 meter in the dry season, and the distance between the transverse trenches is 50-200 meters; and (2) longitudinal trenches are dug, intersect with the transverse trenches formed in the step (1) and extend towards the center of the lake, the length of the longitudinal trenches exceeds the range of a zizania caduciflora dense growing area, the width of the longitudinal trenches is 2-4 meters, and the depth of the longitudinal trenches meets the requirement that sludge at the bottom of the lake is excavated out. A trench system is dug in the lake branch zizania caduciflora dense growing area, so that natural circulation of water in the zizania caduciflora dense growing area and the great lake is facilitated, water aquaculture ecology is improved, harmful weeds are changed into beneficial weeds, and the aquaculture benefits of the great lake are substantially improved.

Description

technical field [0001] The invention relates to the field of aquaculture, in particular to a method for treating the lake-branched wild rice grass in the culture of the Great Lakes. Background technique [0002] With the rapid development of the aquaculture industry, the farming method has changed from extensive farming to intensive farming. However, while increasing production and increasing benefits, it has also produced negative effects: serious water pollution, increased suspended solids in water, BOD (biological Oxygen consumption), COD (chemical oxygen demand), nitrogen, phosphorus content increased, dissolved oxygen decreased, a large number of blue-green algae occurred, and the water environment deteriorated, resulting in frequent occurrence of fish diseases and great economic losses. Therefore, creating a good aquaculture water environment is not only the need for healthy fish farming, but also the need for protecting the ecological environment. Water environmental ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B3/00
Inventor 王火生
Owner 王火生