Ditch system for governance of lake branch zizania caduciflora of big lake cultivation

A technology of water jasmine and horizontal ditch, applied in water conservancy projects, marine engineering, construction and other directions, can solve the problems of reducing breeding efficiency, inapplicability, and destroying water ecology.

Inactive 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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  • Ditch system for governance of lake branch zizania caduciflora of big lake cultivation

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Experimental program
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Effect test

Embodiment 1

[0017] Embodiment 1: A kind of ditch system for the management of the lake-branched water grass cultivated in a large lake, the ditch system consists of a horizontal ditch 21 excavated along the shoreline 11 and a longitudinal ditch 31 that intersects with the horizontal ditch 21 and extends to the center of the lake Composition: the horizontal ditch 21 is close to the shoreline in the dry season, the width of the ditch is 2 meters, the depth of the ditch is to dig out the silt to the hard subsoil, and the water depth in the dry season is not less than 1 meter; the distance between the horizontal ditch and the horizontal ditch is 100 meters; The longitudinal ditch 31 intersects with the horizontal ditch 21 and extends toward the center of the lake, the length of which exceeds the densely grown area of ​​Zizania 12. The width of the longitudinal ditch 31 is 3 meters, and the ditch is as deep as the lake bottom silt is excavated.

Embodiment 2

[0018] Embodiment 2: A kind of ditch system for the management of the lake-branched water grass cultivated in a large lake, the ditch system consists of a horizontal ditch 21 excavated along the shoreline 11 and a longitudinal ditch 31 that intersects with the horizontal ditch 21 and extends to the center of the lake Composition: the horizontal ditch 21 is close to the shoreline in the dry season, the ditch width is 3 meters, the ditch depth is to dig out the silt to the hard subsoil, and the water depth in the dry season is not less than 1 meter; the distance between the horizontal ditch and the horizontal ditch is 200 meters; The longitudinal ditch 31 intersects with the horizontal ditch 21 and extends toward the center of the lake, the length of which exceeds the densely grown area of ​​Zizania 12. The width of the longitudinal ditch 31 is 4 meters, and the ditch is as deep as the lake bottom silt is excavated. The planar distribution shape of the horizontal grooves 21 and t...

Embodiment 3

[0019] Embodiment 3: A kind of ditch system for the management of lake-branched water grass cultivated in a large lake, the ditch system consists of a horizontal ditch 21 excavated along the shoreline 11 and a longitudinal ditch 31 that intersects with the horizontal ditch 21 and extends to the center of the lake Composition: the horizontal ditch 21 is close to the shoreline in the dry season, the ditch width is 2 meters, the ditch depth is to dig out the silt to the hard subsoil, and the water depth in the dry season is not less than 1 meter; the distance between the horizontal ditch is 50 meters; The longitudinal ditch 31 is intersected with the horizontal ditch 21 and extends toward the center of the lake, the length of which exceeds the densely grown area of ​​wild rice grass 12. The width of the longitudinal ditch 31 is 2 meters, and the ditch depth is the degree of dredging the silt at the bottom of the lake. The planar distribution shape of the horizontal groove 21 and t...

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Abstract

The invention relates to the field of aquaculture, in particular to a ditch system for governance of lake branch zizania caduciflora of big lake cultivation. The ditch system for governance of lake branch zizania caduciflora of big lake cultivation is composed of transverse ditches excavated along the shoreline and longitudinal ditches intersecting with the transverse ditches and extending to the lake center. The transverse ditches are tightly close to the shoreline in the dry season and are 2-3 m wide, and are dug to hard subsoil by excavating away sludge, and the water depth is no less than one meter in the dry season. The transverse ditches are spaced by 50-200 meters. The longitudinal ditches and the transverse ditches are connected in an intersecting mode, and the longitudinal ditches extend to the lake center. The length of the longitudinal ditches is greater than that of the zizania caduciflora dense region, and the longitudinal ditches are 2-4 meters wide and are dug to the position where the lake bottom sludge is excavated away. By excavating the ditch system in the lake branch zizania caduciflora dense region, natural circulation of the zizania caduciflora dense region and a big lake water body is prompted, the water body cultivation ecology is improved, harmful weeds are turned into beneficial weeds, and the big lake aquaculture benefits are greatly improved.

Description

technical field [0001] The invention relates to the field of aquaculture, in particular to a ditch system for the management of lake branch bamboo grasses cultivated in large 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
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