Rapid self-forming method of callisneria natans underwater meadow

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...

AI Technical Summary

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 these lake areas is often costly, small in scale, unable to reverse the water conditions in the lake area, and ultimately difficult to maintain aquatic plants healthy growth of the colony

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