Rapid self-forming method of callisneria natans underwater meadow

A self-forming, bitter grass technology, applied in the field of large-scale large-scale water environment biological treatment, can solve the problems of small scale, high cost of restoring aquatic plants, and difficulty in maintaining the healthy growth of aquatic plant communities, and achieves the promotion of ecosystem stability and improvement. effect of structure

Inactive Publication Date: 2012-05-30
INST OF AQUATIC LIFE ACAD SINICA
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Problems solved by technology

However, due to technical reasons, it is very difficult to restore aquatic plants in lakes with deep water bodies and severe vegetation degradation. Restoration of aquatic plants in the

Method used

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  • Rapid self-forming method of callisneria natans underwater meadow

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Experimental program
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Embodiment Construction

[0018] Step 1: Estimate the amount of fertile lake mud, clay and biodegradable fiber according to the total amount of demand, and collect these raw materials using the principle of proximity and economy. Note that the lake mud and clay should not be seriously polluted to ensure that the bitter grass can survive and grow;

[0019] The second step: prepare the culture medium of Erythrina chinensis according to the ratio of lake mud: clay: degradable fiber volume ratio of about 40:40:20, and fill the culture medium into a detachable mold with a length of 60 cm × width of 30 cm × height of 8 cm;

[0020] Step 3: Put the molds filled with the culture medium into a cement pool with good light conditions and adjustable water level at intervals. The initial water level just submerges the surface of the culture medium, and place it for use;

[0021] The 4th step: according to demand (need to consider the loss amount of bitter grass stone bud in germination and growth project, so more t...

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Abstract

The invention discloses a rapid self-forming method of a vallisneria natans underwater meadow, relating to a large-area and large-scale water environment biological treatment technique. The method comprises the steps of: (1) collecting fertile lake mud, clay and degradable fibres; (2) preparing a vallisneria natans culture substrate according a volume ratio of the lake mud, the clay to the degradable fibres of 40: 40: 20 and filling the culture substrate in a detachable mould which is 60 cm in length, 30 cm in width and 8 cm in height; (3) putting the mould in a cement pond which is good in illumination conditions and has adjustable water level; (4) collecting healthy and strong winter buds of the vallisneria natans and sowing the buds in the culture substrate; and (5) adjusting the waterlevel in the cement pond duly according to growth height of the vallisneria natans so that the vallisneria natans can grow rapidly and thereby are branched and combined to form the meadow. The rapid self-forming method of the vallisneria natans underwater meadow disclosed by the invention can produce plenty of vallisneria natans meadows in a large scale, is convenient for implementation and construction, and can rapidly and efficiently recover submerged plants in a nutrient-rich shallow lake so that a foundation for further optimizing aquatic plant community is provided, thereby aquatic ecosystem structure is improved and ecological system stabilization is promoted.

Description

technical field [0001] The invention relates to a large-scale water environment biological treatment technology, in particular to a rapid self-forming method for a submerged plant Vallisneria natans underwater meadow. Background technique [0002] At present, due to the widespread problems of substandard discharge of polluted water bodies, forest vegetation destruction, and intensified soil erosion, the nitrogen and phosphorus loads of rivers, lakes and other receiving water bodies have increased, water transparency has decreased, and water eutrophication has become prominent. The area of ​​aquatic vegetation is shrinking, the biodiversity is sharply reduced, and the series of ecological problems of the lake's grass type-clear water state to algae type-turbid water state are becoming more and more prominent. [0003] Submerged vegetation is one of the important components of the lake aquatic ecosystem, and it has important ecological significance in maintaining the stability...

Claims

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Application Information

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IPC IPC(8): C02F3/32
Inventor 何亮曹特倪乐意张萌
Owner INST OF AQUATIC LIFE ACAD SINICA
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