CN103663714A

CN103663714A - Double-layer net bed for repairing water by planting submerged plants and water repairing method

Info

Publication number: CN103663714A
Application number: CN201310714528.0A
Authority: CN
Inventors: 吴建勇; 何培民; 温文科; 邵留; 徐婕; 吴海龙; 杨欣欣; 张林慧; 周玲洁; 吴青; 张建伟; 刘媛媛; 陈中伟
Original assignee: Shanghai Maritime University
Current assignee: Shanghai Maritime University
Priority date: 2013-12-21
Filing date: 2013-12-21
Publication date: 2014-03-26

Abstract

The invention discloses a double-layer mesh bed for planting submerged plants to repair water bodies, which comprises an upper mesh and a lower mesh; the upper mesh is a quadrilateral mesh with square meshes, and the side length of the square is 1cm-5cm; The lower mesh is a quadrilateral fishing net, the mesh is a square, and the side length of the square is 2mm-10mm; the four corners of the upper mesh and the lower mesh are respectively fixed on four piles distributed in a quadrilateral; the upper The distance between the mesh and the lower mesh is 3-5cm. According to the size of the mesh of the upper layer, the bitter grass is bundled so that it can just be inserted into the mesh, and the root of the bitter grass can be guaranteed to touch the lower mesh. According to the change of the water level and transparency of the water body to be repaired, the invention continuously changes the ecological niche, thereby overcoming the limitation of the transparency on the restoration of submerged vegetation and improving the restoration effect.

Description

A kind of kind of planting submerged plant repaired the Double-level Reticulated bed of water body and the method for repairing water body

Technical field

The present invention relates to ecological reestablishment field, be specifically related to a kind of kind of planting submerged plant and repair the Double-level Reticulated bed of water body and the method for repairing water body.

Background technology

In recent years, water environment in China allows of no optimist, and river course, water body in lake eutrophication phenomenon have been of common occurrence.The pollution of water body, has not only had a strong impact on people's life and production, but also can uglify visual Landscape.After standard of living improves constantly, people start beautifying and protecting consciousness also to improve gradually ecotope.Just, under this background, ecological restoration is quietly risen.Ecological restoration final purpose builds the optimum ecosystem exactly.And build the optimum ecosystem, first must make submerged plant group quick-recovery soon.

Yet how to make the fast quick-recovery of submerged plant group, especially the reparation to the water body of ballow and muddiness.Have scholar to think, employing can regulate and control net bed continuously can realize the fast quick-recovery of submerged plant group.Photosynthesis is the most important Metabolic activity of submerged plant, is conventionally subject to the restriction of low light photograph, due to the impact of water body solute, suspended particle and the depth of water, can lose 10% left and right at air and water intersection in addition, and the phenomenon of illumination deficiency the most easily occurs.The features such as the photosynthetic light compensation point of submerged plant, have determined full depth, photosynthetic yield and competitive capacity that submerged plant can distribute under water.Therefore, the recovery of submerged plant can only be carried out in ecological compensation area, the light that continuous adjustable net bed can well overcome in submerged plant recovery suppresses problem, and net bed plant, by the submerged plant ecological niche in raising low transparency waters, makes submerged plant Fast Growth.Thereby make submerged plant pass through biological in adsorbed water body and tripton, improve water transparency, increase Dissolved Oxygen in Water, improve illumination condition under water, by root, stem, leaf, absorb fixedly in water body and bed mud the improvement of the powerful effect realizations such as nutritive substance to water quality such as N, P.

Yet traditional is directly bundled in submerged plant on lace curtaining, the binding base portion epidermis of submerged plant is easily impaired, causes rotting, and finally from net bed, comes off.Because eel grass is acaulescence herbaceous plant, by binding method, can only bundle its blade bottom, so more easily make the blade phenomenon that fractures.Greatly reduce the survival rate of eel grass.

In addition, eel grass is directly inserted on fishing net, due to the flexibility of nettle, the eel grass that result is prone to after interting is dilapidated., for the eel grass after inserting, there is not the phenomenon of translating into, but because its root does not have impetus, have a strong impact on the growth of root system in individual layer vulcanite net, thereby for the tillering ability that greatly affects plant.

Summary of the invention

The object of the invention is to plant for above tradition net bed the problem that planting submerged plant exists, propose a kind of kind of planting submerged plant and repair the Double-level Reticulated bed of water body and the method for repairing water body.

The present invention takes following technical scheme:

Kind of planting submerged plant is repaired a Double-level Reticulated bed for water body, comprises upper wire sheet and lower net sheet;

Described upper wire sheet is network of quadrilaterals sheet, and mesh is square, and the square length of side is 1cm-5cm;

Described lower net sheet is tetragon fishing net, and mesh is square, and the square length of side is 2mm-10mm;

Four angles of described upper wire sheet and lower net sheet are individually fixed on four piles that are tetragon distribution;

Described upper wire sheet and lower net sheet interval 3-5cm.

Described upper wire sheet is hard environment-protective rubber net sheet.

Preferably, thereby the corresponding angle of described upper wire sheet and lower net sheet is fixed on a mechanically resistant material and net sheet is separated and fixed network sheet interval, described mechanically resistant material is fixed in described stake, described mechanically resistant material is selected from wooden stick, iron staff and vulcanite rod, is easy to like this realize can regulating and controlling up and down continuously of net bed.

In conjunction with above-mentioned net bed, the present invention also provides a kind of kind of planting submerged plant to repair the method for water body:

According to the large wisp submerged plant of upper wire bed mesh, be made into a branch ofly, make it can just inject mesh, according to the length of submerged plant root, select to adjust the interval of upper wire sheet and lower net sheet, guarantee that the root of submerged plant can contact on lower net sheet; The preferred eel grass of described submerged plant.Eel grass is stuck with after full wafer mesh, throws in and enters in water body.

Aforesaid method, according to the special construction of Double-level Reticulated sheet, adopts the interspersed method of eel grass, makes eel grass stand on net bed upper, guarantees the minimum damage degree of eel grass; Lower net is the impetus of eel grass root, can promote growth and the germination of root, thereby improves the tillering ability of eel grass.

, in order to avoid there is being completely cured in a large number phenomenon in extruding that can not be energetically in the time of in above-mentioned repair process will noting eel grass to inject mesh.

The cheapness that net bed accessory of the present invention has, it is simple in structure, for planting pasture and water, carries out water body reparation and has ease for operation.The present invention also has following beneficial effect: the fixing of four jiaos of net beds adopts rod and the binding of timber to be easy to like this realize the height that can regulate and control continuously net bed; The Fast Growth of eel grass with tiller, by eel grass, to the adsorption and sedimentation of water body suspended particle in muddiness and to gram coming into force of algae, should wait powerful effect, water transparency improves gradually.Along with the raising of transparency, start progressively the down height of regulation and control net bed, finally make net bed sink to bottom, form " submerged forest ".So not only can repair fast water body, but also water surrounding is played to effect attractive in appearance.

Accompanying drawing explanation

Fig. 1 is Double-level Reticulated bed structure schematic diagram of the present invention.

Fig. 2 is the intention after eel grass is planted in Double-level Reticulated; Wherein, 1, hard environment-protective rubber net sheet, 2, fishing net, 3, stake, 4, wooden stick, 5, eel grass.

Fig. 3 is the time dependent schematic diagram of total nitrogen content in five embodiment.

Fig. 4 is the time dependent schematic diagram of total phosphorous in five embodiment.

Fig. 5 is the time dependent schematic diagram of water transparency in five embodiment.

Embodiment

Below in conjunction with specific embodiment, the present invention is further described.

Embodiment:

As depicted in figs. 1 and 2, of the present invention kind of planting submerged plant repaired the Double-level Reticulated bed of water body, comprises upper wire sheet 1 and lower net sheet 2; Upper wire sheet is tetragon hard environment-protective rubber net sheet, and mesh is square, and the square length of side is 1cm-5cm; Lower net sheet is tetragon fishing net, and mesh is square, and the square length of side is 2mm-10mm; Thereby the corresponding angle of upper wire sheet 1 and lower net sheet 2 is fixed on wooden stick 3 and net sheet is separated and fixed network sheet interval, wooden stick 3 is fixed in stake 4; Upper wire sheet and lower net sheet interval 3-5cm.

As shown in Figure 2, eel grass is interspersed in the rubber mesh of upper strata, the fixing binding that adopts rod and timber that Double-level Reticulated bed is four jiaos, be easy to like this realize the height that can regulate and control continuously net bed, make eel grass Fast Growth, tiller, by eel grass, to the adsorption and sedimentation of water body suspended particle in muddiness and to gram coming into force of algae, should wait powerful effect, water transparency improves gradually.Along with the raising of transparency, start progressively the down height of regulation and control net bed, finally make net bed sink to bottom, form " submerged forest ".So not only can repair fast water body, but also water surrounding is played to effect attractive in appearance.

Table 1 is the concrete performance of each embodiment under different condition.

Table 1

Wherein, W _just, W _endbiomass when being respectively the initial of eel grass and finishing, △ L is the long average increasing amount of leaf, and △ R is the daily growth amount of eel grass biomass, and five "+" represents that new radical amount is very many, and four "+" takes second place, by that analogy.

Table 2-table 4 is corresponding diagram 3-Fig. 5 respectively.

Table 2

TN(mg/L)	1	2	3	4	5
						October 2	4.2	4.1	3.9	4.2	4
October 5	3.5	3.8	3.7	3.4	3.7
						October 8	4.2	4	3.2	3	2.9
October 11	3.8	3.2	2.8	2.6	2.3
						October 13	4.3	2.8	3.4	2.1	1.8
October 15	4.1	3	2.3	1.8	1.9
						October 18	3.9	2.3	2.7	1.4	1.1

Table 3

TP(mg/L)	1	2	3	4	5
						October 2	0.38	0.35	0.36	0.36	0.38
October 5	0.38	0.32	0.34	0.24	0.26
						October 8	0.4	0.28	0.27	0.3	0.27
October 11	0.37	0.21	0.23	0.24	0.15
						October 13	0.38	0.27	0.21	0.19	0.13
October 15	0.38	0.19	0.15	0.13	0.09
						October 18	0.39	0.22	0.18	0.11	0.1

Table 4

The above is preferred embodiment of the present invention, but the present invention should not be confined to the disclosed content of this embodiment.So every, do not depart from the equivalence completing under principles of this disclosure or revise, all falling into the scope of protection of the invention.

Claims

1. A double-layer net bed for planting submerged plants to restore water bodies, characterized in that, comprising an upper net and a lower net;

The upper mesh is a quadrilateral mesh, the mesh is a square, and the side length of the square is 1cm-5cm;

The lower mesh is a quadrilateral fishing net, the mesh is square, and the side length of the square is 2mm-10mm;

The four corners of the upper mesh and the lower mesh are respectively fixed on four piles distributed in a quadrangular shape;

The distance between the upper mesh and the lower mesh is 3-5cm.

2. The double-layer mesh bed according to claim 1, characterized in that, the upper mesh is a hard environmental protection rubber mesh.

3. double-layer mesh bed according to claim 1, is characterized in that, the corresponding angle of described upper layer mesh and lower floor mesh is fixed on a hard material so that mesh is separated and fixed mesh interval, The hard material is secured to the pile.

4. The double-layer net bed according to claim 1, wherein the hard material is selected from wooden rods, iron rods and hard rubber rods.

5. A method for planting submerged plants to restore a water body, characterized in that, according to the size of the upper net bed mesh, the submerged plants are bundled so that they can just be inserted into the mesh, and the submerged plants are selected according to the length of the submerged plant roots. Adjust the interval between the upper mesh and the lower mesh to ensure that the roots of the submerged plants can touch the lower mesh.

6. A method for planting submerged plants to restore water bodies, characterized in that the submerged plants are bitter grass.