Method and application for preventing rapid propagation of wetland aquatic plants

Abstract

The present invention belongs to the technical field of wetlands, and particularly relates to a method and application for preventing the rapid reproduction of wetland aquatic plants. The method includes: site cleaning; laying rubble to form a rubble layer; laying bamboo mat: laying a bamboo mat on the upper surface of the rubble layer, the length of the bamboo mat is 30 cm to 80 cm, the width is 30 cm to 50 cm, and the thickness is 1 cm to 2 cm; filling filter material; performing growth inhibitor treatment according to any of the following methods: spreading a growth inhibitor on the upper surface and then filling the filter material; spreading a growth inhibitor after filling the filter material; or spreading a growth inhibitor on the wetland surface after the filter material is filled and filtered for half a year. The present invention uses a bamboo mat to isolate the rubble layer from the ecological filter material, and the growth inhibitor is attached to the bamboo mat, preventing the silt and gravel in the rubble from being mixed and piled up, reducing the reproduction speed of aquatic plants, preventing the blockage of the ecological filter material, and also preventing the pollution between the ecological filter material layers, thereby improving water quality.

Description

Technical Field

[0001] The present invention belongs to the technical field of wetlands, and particularly relates to a method and application for preventing the rapid reproduction of wetland aquatic plants. Background Art

[0002] An artificial wetland is a sewage treatment technology that is artificially constructed and operated and has similar functions to natural wetlands. When sewage is distributed onto an artificially constructed wetland, as the sewage flows through the wetland in a certain direction, it mainly uses the triple synergistic effects of the artificially filled filter media, the attached microorganisms, the absorption by plant roots, and the physical, chemical, and biological effects of rhizosphere microorganisms to treat the sewage. Its mechanism of action includes adsorption, retention, filtration, redox, precipitation, microbial decomposition, transformation, plant shading, residue accumulation, transpiration of water and nutrient absorption, and the effects of various animals.

[0003] In the prior art, ecological filter media are directly filled on the wetland foundation, resulting in excessive accumulation and floating of silt and aquatic plants in the wetland foundation, affecting the life cycle of the ecological filter media, reducing the filtering and adsorption effect of the ecological filter media, making it impossible to achieve the original goal of water purification, and the silt and aquatic plants have a greater impact on water quality. Therefore, reducing the reproduction rate of aquatic plants is the key to improving water quality. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a method for preventing the rapid reproduction of wetland aquatic plants. A bamboo mat is used to isolate the rubble layer from the ecological filter media, and a growth inhibitor is attached to the bamboo mat. The bamboo mat and the growth inhibitor, on the one hand, play an isolation role to prevent the accumulation of silt and gravel in the rubble, and on the other hand, play a role in reducing the reproduction rate of aquatic plants, preventing the clogging of the ecological filter media, and also preventing pollution between the ecological filter media layers.

[0005] The object of the present invention is to provide a method for preventing the rapid reproduction of wetland aquatic plants, including:

[0006] The first step is site cleaning;

[0007] The second step is to lay rubble to form a rubble layer;

[0008] The third step is the laying of the bamboo mat: lay the bamboo mat on the upper surface of the rubble layer. The length of the bamboo mat is 30 cm to 80 cm, the width is 30 cm to 50 cm, and the thickness is 1 cm to 2 cm;

[0009] The fourth step is the filling of filter media;

[0010] The fifth step is to perform growth inhibitor treatment according to any one of the following methods:

[0011] (1) Sprinkle the growth inhibitor on the upper surface of the bamboo mat, and then perform the filling of filter media;

[0012] (2) Apply a growth inhibitor after filling the filter material.

[0013] (3) Apply a growth inhibitor to the wetland surface after the filter material is filled and after filtering for half a year.

[0014] Among them, the growth inhibitor is a mixed solution formed by mixing chlormequat chloride: tiibenzuron: matrine: water in a mass ratio of 1:1:5-10:10000. Note that the growth inhibitor is prepared and used immediately. Before application, ensure that the soluble substances are dissolved and the insoluble substances are suspended.

[0015] Among them, chlormequat chloride is a low-toxic plant growth regulator. Its known function is to inhibit plant cell elongation, but not cell division, and does not affect the formation of plant organs. Chlormequat chloride will make the plant short and strong. In the present invention, chlormequat chloride is used. On the one hand, it utilizes its function of inhibiting cell elongation to inhibit the plant height, and on the other hand, it also utilizes its newly discovered function of inhibiting the tiller number of plants.

[0016] Tiibenzuron, also known as 2,3,5-triiodobenzoic acid, C7H3I3O2, is a plant growth inhibitor. Its known function is to inhibit the polar transport of indole-3-acetic acid and inhibit apical dominance. In the present invention, tiibenzuron is used to inhibit cell division, reduce the tiller number, and thus reduce the plant growth rate.

[0017] In the present invention, matrine is used to reduce the tiller number of plants and the plant survival rate, thereby reducing the plant growth rate.

[0018] Preferably, in the above method for preventing the rapid reproduction of wetland aquatic plants, the mass ratio of chlormequat chloride: tiibenzuron: matrine: water is 1:1:10:10000.

[0019] Preferably, in the above method for preventing the rapid reproduction of wetland aquatic plants, the mass ratio of chlormequat chloride: tiibenzuron: matrine: water is 1:1:5:10000.

[0020] Preferably, in the above method for preventing the rapid reproduction of wetland aquatic plants, 1 g - 2 g of the growth inhibitor is applied per square centimeter of the wetland.

[0021] Preferably, in the above method for preventing the rapid reproduction of wetland aquatic plants, the production method of the bamboo mat is: after splitting the bamboo, cut it into bamboo strips with a width of 0.5 cm - 1 cm, and then weave the bamboo strips in longitude and latitude to obtain the bamboo mat. Multiple layers of bamboo mats are stacked up and down to meet the thickness requirements for laying the bamboo mat.

[0022] Preferably, in the above method for preventing the rapid reproduction of wetland aquatic plants, the thickness of the rubble layer is 30 cm - 80 cm, and the particle size of the rubble is 5 cm - 20 cm.

[0023] Preferably, for the method for preventing the rapid propagation of wetland aquatic plants described above, there are a total of 2 layers of filter media, which are the first mixed filter media and the second mixed filter media from bottom to top;

[0024] The ratio and particle size of the first mixed filter media are as follows:

[0025] The first composite high-efficiency ecological phosphorus-removing filter media: 70% by mass percentage, with a particle size of 5 mm;

[0026] The first gravel filter media: 20% by mass percentage, with a particle size of 3 cm;

[0027] The first denitrifying filter media: 10% by mass percentage, with a particle size of 5 mm.

[0028] The materials of the first mixed filter media are mixed and reserved for later use.

[0029] The ratio and particle size of the second mixed filter media are as follows:

[0030] The second composite high-efficiency ecological phosphorus-removing filter media: 70% by mass percentage, with a particle size of 3 mm;

[0031] The second gravel filter media: accounting for 20% by mass percentage, with a particle size of 3 cm;

[0032] The second denitrifying filter media: accounting for 10% by mass percentage, with a particle size of 5 mm;

[0033] The materials of the second mixed filter media are mixed and reserved for later use.

[0034] Preferably, for the method for preventing the rapid propagation of wetland aquatic plants described above, the thicknesses of the first mixed filter media and the second mixed filter media are both 5 cm to 20 cm.

[0035] The present invention also provides an application of a growth inhibitor in preventing the rapid propagation of wetland aquatic plants.

[0036] Preferably, the growth inhibitor is used to inhibit the tiller number, plant height, survival rate, and growth rate of plants.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] The present invention uses the physical isolation construction process of artificial wetland ecological filter media to isolate the rubble layer from the ecological filter media, which can not only intercept silt and aquatic plants, improve the life cycle of the ecological filter media, but also intercept sand and gravel and suspended solids in the water, which is beneficial to improving the purification efficiency of the ecological filter media.

[0039] The present invention creates good process conditions and data bases for scientific research teams, which is beneficial to the development of scientific research and monitoring work. Description of the Drawings

[0040] Figure 1 This is the process flow diagram of the method for preventing the rapid propagation of wetland aquatic plants in the present invention. Detailed implementation manners

[0041] In order to enable those skilled in the art to better understand and implement the technical solution of the present invention, the present invention will be further described below in conjunction with specific embodiments and the accompanying drawings.

[0042] In the description of the present invention, unless otherwise specified, the reagents used are all commercially available, and the methods used are all conventional techniques in the art.

[0043] In the description of the present invention, the first composite high-efficiency ecological phosphorus-removing filter material is purchased from Gongyi Sifeng Water Purification Materials Co., Ltd., also known as composite denitrifying sulfur autotrophic filter material, with a particle size of 5 mm; the second composite high-efficiency ecological phosphorus-removing filter material is purchased from Gongyi Sifeng Water Purification Materials Co., Ltd., also known as composite denitrifying sulfur autotrophic filter material, with a particle size of 3 mm; the first gravel filter material and the second gravel filter material are both purchased from Lingshou Yongshun Mineral Products Processing Factory, which are cobblestone gravel filter materials with a particle size of 3 cm; the first denitrification filter material and the second denitrification filter material are purchased from Henan Yanglin Environmental Protection Technology Co., Ltd., specifically Yujing brand BAF biological ceramsite filter material, a denitrification and phosphorus-removing filler for DBAF aerated biological filter, with a particle size of 5 mm.

[0044] Figure 1 This is the process flow diagram of the method for preventing the rapid propagation of wetland aquatic plants in the present invention. The specific process includes the following embodiments.

[0045] Example 1

[0046] A method for preventing the rapid propagation of wetland aquatic plants, comprising:

[0047] The first step, site cleaning: All trees, stumps, tree roots, weeds, silt, sediment, garbage and sundries within the site cleaning range are completely removed, and the site cleaning thickness is 300 mm.

[0048] For energy conservation and environmental protection, the topsoil layer with a depth of 0.3 m within the site should be stockpiled for future greening and beautification. The removed topsoil cannot be used for site backfilling and levee filling.

[0049] The second step, laying rubble: After the site cleaning is completed, a layer of rubble is laid to form a rubble layer. The thickness of the rubble layer is 30 cm, and the particle size of the rubble is 5 cm.

[0050] Step 3, laying bamboo mat: Lay a bamboo mat on the upper surface of the rubble layer. The bamboo mat is 30 cm in length, 30 cm in width, and 1 cm in thickness. The production method of the bamboo mat is as follows: After splitting the bamboo, cut it into bamboo strips with a width of 0.5 cm, and then weave the bamboo strips in warp and weft to obtain the bamboo mat. Among them, warp and weft weaving is to weave the bamboo strips together in a crisscross manner.

[0051] Step 4, applying growth inhibitor: Evenly sprinkle a layer of growth inhibitor on the upper surface of the bamboo mat, with 1 g sprinkled per square centimeter.

[0052] The growth inhibitor is a mixed solution formed by mixing chlormequat chloride: tiabendazole: matrine: water in a mass ratio of 1:1:5:10000. The growth inhibitor is prepared on-site and used after being fully mixed.

[0053] Step 5, filling filter material:

[0054] Lay filter material on the upper surface of the growth inhibitor, with each layer of filter material having a thickness of 5 cm.

[0055] Among them, there are a total of 2 layers of filter material, which are the first mixed filter material and the second mixed filter material in sequence from bottom to top.

[0056] The ratio and particle size of the first mixed filter material are as follows:

[0057] The first composite high-efficiency ecological phosphorus-removing filter material: 70% by mass percentage, with a particle size of 5 mm;

[0058] The first gravel filter material: 20% by mass percentage, with a particle size of 3 cm;

[0059] The first denitrification filter material: 10% by mass percentage, with a particle size of 5 mm.

[0060] Mix the various materials and set aside for later use.

[0061] The ratio and particle size of the second mixed filter material are as follows:

[0062] The second composite high-efficiency ecological phosphorus-removing filter material: 70% by mass percentage, with a particle size of 3 mm;

[0063] The second gravel filter material: accounting for 20% by mass percentage, with a particle size of 3 cm;

[0064] The second denitrification filter material: accounting for 10% by mass percentage, with a particle size of 5 mm;

[0065] Mix the various materials and set aside for later use.

[0066] For other embodiments and the key points of the blank technical solutions, refer to Table 1.

[0067] Table 1 Test Design

[0068]

[0069]

[0070]

[0071] It should be noted that, in the above test groups, except for the differences recorded in Table 1, the remaining steps are consistent with Example 1, the growth inhibitor is prepared and used immediately, and the soluble matter is dissolved and the insoluble matter is suspended before spreading. The methods of each example are as follows.

[0072] Example 2

[0073] A method for preventing rapid proliferation of aquatic plants in wetlands, comprising:

[0074] The first step is site cleaning: remove all trees, stumps, tree roots, weeds, silt, sand, garbage and debris within the site cleaning range. The site cleaning thickness is 300mm.

[0075] In order to save energy and protect the environment, the topsoil of the site with a depth of 0.3m should be stored for future greening and beautification. The cleared topsoil shall not be used for site backfilling or embankment filling.

[0076] The second step is to lay rubble stones: After the site is cleaned, lay a layer of rubble stones to form a rubble stone layer with a thickness of 50cm and a rubble stone particle size of 5cm.

[0077] The third step is laying bamboo mats: Bamboo mats are laid on the upper surface of the rough stone layer. The bamboo mats are 30cm long, 30cm wide and 1cm thick. The bamboo mats are made by breaking the bamboo and cutting them into 0.5cm wide strips, then weaving the strips in warp and weft to get bamboo mats.

[0078] The fourth step is to spread the growth inhibitor: spread a layer of growth inhibitor evenly on the surface of the bamboo mat, 1g per square centimeter.

[0079] The growth inhibitor is a mixed solution of chlormequat: triiodobenzoic acid: matrine: water in a mass ratio of 1:1:5:10000. The growth inhibitor is prepared on site and used after being fully mixed.

[0080] The fifth step, filter material filling: the operation is the same as in Example 1.

[0081] Example 3

[0082] A method for preventing rapid proliferation of aquatic plants in wetlands, comprising:

[0083] The first step, site cleaning: All trees, stumps, tree roots, weeds, silt, sand, garbage and sundries within the site cleaning scope shall be completely removed, and the site cleaning thickness is 300 mm.

[0084] For energy conservation and environmental protection, the topsoil layer with a depth of 0.3 m within the site shall be stockpiled for future greening and beautification purposes. The removed topsoil shall not be used for site backfilling and levee filling.

[0085] The second step, laying rubble: After the site cleaning is completed, lay a layer of rubble to form a rubble layer. The thickness of the rubble layer is 80 cm, and the particle size of the rubble is 5 cm.

[0086] The third step, laying bamboo mat: Lay a bamboo mat on the upper surface of the rubble layer. The length of the bamboo mat is 30 cm, the width is 30 cm, and the thickness is 1 cm. The production method of the bamboo mat is: After splitting the bamboo, cut it into bamboo strips with a width of 0.5 cm, and then weave the bamboo strips in warp and weft to obtain the bamboo mat.

[0087] The fourth step, applying growth inhibitor: Evenly sprinkle a layer of growth inhibitor on the upper surface of the bamboo mat, and sprinkle 1 g per square centimeter.

[0088] The growth inhibitor is a mixed solution formed by mixing chlormequat chloride: tiibenzuron: matrine: water in a mass ratio of 1:1:5:10000. The growth inhibitor is prepared on site and used after being fully mixed.

[0089] The fifth step, filling filter material: The operation is the same as that in Example 1.

[0090] Example 4

[0091] A method for preventing the rapid propagation of wetland aquatic plants, including:

[0092] The first step, site cleaning: All trees, stumps, tree roots, weeds, silt, sand, garbage and sundries within the site cleaning scope shall be completely removed, and the site cleaning thickness is 300 mm.

[0093] For energy conservation and environmental protection, the topsoil layer with a depth of 0.3 m within the site shall be stockpiled for future greening and beautification purposes. The removed topsoil shall not be used for site backfilling and levee filling.

[0094] The second step, laying rubble: After the site cleaning is completed, lay a layer of rubble to form a rubble layer. The thickness of the rubble layer is 30 cm, and the particle size of the rubble is 20 cm.

[0095] The third step, laying bamboo mat: Lay a bamboo mat on the upper surface of the rubble layer. The length of the bamboo mat is 30 cm, the width is 30 cm, and the thickness is 1 cm. The production method of the bamboo mat is: After splitting the bamboo, cut it into bamboo strips with a width of 0.5 cm, and then weave the bamboo strips in warp and weft to obtain the bamboo mat.

[0096] Step 4, applying growth inhibitor: Evenly spread a layer of growth inhibitor on the upper surface of the bamboo mat, with 1 g applied per square centimeter.

[0097] The growth inhibitor is a mixed solution prepared by mixing chlormequat chloride: tiabendazole: matrine: water in a mass ratio of 1:1:5:10000. The growth inhibitor is prepared on-site and used after thorough mixing.

[0098] Step 5, filling filter materials: The operation is the same as that in Example 1.

[0099] Example 5

[0100] A method for preventing the rapid reproduction of wetland aquatic plants, comprising:

[0101] Step 1, site cleaning: Completely remove all trees, stumps, tree roots, weeds, silt, sand, garbage, and sundries within the site cleaning scope, with a site cleaning thickness of 300 mm.

[0102] For energy conservation and environmental protection, the topsoil layer with a depth of 0.3 m within the site should be stockpiled for future greening and beautification purposes. The removed topsoil cannot be used for site backfilling and levee filling.

[0103] Step 2, laying rubble: After the site cleaning is completed, lay a layer of rubble to form a rubble layer, with a rubble layer thickness of 50 cm and a rubble particle size of 20 cm.

[0104] Step 3, laying bamboo mat: Lay a bamboo mat on the upper surface of the rubble layer. The bamboo mat has a length of 30 cm, a width of 30 cm, and a thickness of 1 cm. The manufacturing method of the bamboo mat is: After splitting the bamboo, cut it into bamboo strips with a width of 0.5 cm, and then weave the bamboo strips in warp and weft to obtain the bamboo mat.

[0105] Step 4, applying growth inhibitor: Evenly spread a layer of growth inhibitor on the upper surface of the bamboo mat, with 1 g applied per square centimeter.

[0106] The growth inhibitor is a mixed solution prepared by mixing chlormequat chloride: tiabendazole: matrine: water in a mass ratio of 1:1:5:10000. The growth inhibitor is prepared on-site and used after thorough mixing.

[0107] Step 5, filling filter materials: The operation is the same as that in Example 1.

[0108] Example 6

[0109] A method for preventing the rapid reproduction of wetland aquatic plants, comprising:

[0110] The first step, site cleaning: All trees, stumps, tree roots, weeds, silt, sediment, garbage and sundries within the site cleaning scope shall be completely removed, and the site cleaning thickness is 300 mm.

[0111] For energy conservation and environmental protection, the topsoil layer of 0.3 m deep within the site shall be stockpiled for future greening and beautification purposes. The removed topsoil shall not be used for site backfilling and levee filling.

[0112] The second step, laying rubble: After the site cleaning is completed, lay a layer of rubble to form a rubble layer. The thickness of the rubble layer is 80 cm, and the particle size of the rubble is 20 cm.

[0113] The third step, laying bamboo mat: Lay a bamboo mat on the upper surface of the rubble layer. The length of the bamboo mat is 30 cm, the width is 30 cm, and the thickness is 1 cm. The production method of the bamboo mat is: After splitting the bamboo, cut it into bamboo strips with a width of 0.5 cm, and then weave the bamboo strips in warp and weft to obtain the bamboo mat.

[0114] The fourth step, spreading growth inhibitor: Evenly spread a layer of growth inhibitor on the upper surface of the bamboo mat, and spread 1 g per square centimeter.

[0115] The said growth inhibitor is a mixed solution formed by mixing chlormequat chloride: tiabendazole: matrine: water in a mass ratio of 1:1:5:10000. The growth inhibitor is prepared on-site and used after being fully mixed.

[0116] The fifth step, filling filter material: The operation is the same as that in Example 1.

[0117] Example 7

[0118] A method for preventing the rapid reproduction of wetland aquatic plants, including:

[0119] The first step, site cleaning: All trees, stumps, tree roots, weeds, silt, sediment, garbage and sundries within the site cleaning scope shall be completely removed, and the site cleaning thickness is 300 mm.

[0120] For energy conservation and environmental protection, the topsoil layer of 0.3 m deep within the site shall be stockpiled for future greening and beautification purposes. The removed topsoil shall not be used for site backfilling and levee filling.

[0121] The second step, laying rubble: After the site cleaning is completed, lay a layer of rubble to form a rubble layer. The thickness of the rubble layer is 50 cm, and the particle size of the rubble is 20 cm.

[0122] The third step, laying bamboo mat: Lay a bamboo mat on the upper surface of the rubble layer. The length of the bamboo mat is 80 cm, the width is 50 cm, and the thickness is 2 cm. The production method of the bamboo mat is: After splitting the bamboo, cut it into bamboo strips with a width of 0.5 cm, and then weave the bamboo strips in warp and weft to obtain the bamboo mat.

[0123] Step 4, applying a growth inhibitor: Evenly spread a layer of growth inhibitor on the upper surface of the bamboo mat, with 1 g applied per square centimeter.

[0124] The growth inhibitor is a mixed solution prepared by mixing chlormequat chloride: tiabendazole: matrine: water in a mass ratio of 1:1:5:10000. The growth inhibitor is prepared on-site and used after thorough mixing.

[0125] Step 5, filling with filter materials: The operation is the same as in Example 1.

[0126] Example 8

[0127] A method for preventing the rapid propagation of wetland aquatic plants, comprising:

[0128] Step 1, site cleaning: Completely remove all trees, stumps, tree roots, weeds, silt, sediment, garbage, and sundries within the site cleaning area, with a site cleaning thickness of 300 mm.

[0129] For energy conservation and environmental protection, the topsoil layer within 0.3 m deep in the site should be stockpiled for future greening and beautification purposes. The removed topsoil cannot be used for site backfilling and levee filling.

[0130] Step 2, laying rubble: After the site cleaning is completed, lay a layer of rubble to form a rubble layer, with the rubble layer thickness of 50 cm and the rubble particle size of 20 cm.

[0131] Step 3, laying a bamboo mat: Lay a bamboo mat on the upper surface of the rubble layer. The bamboo mat has a length of 80 cm, a width of 50 cm, and a thickness of 2 cm. The manufacturing method of the bamboo mat is: After splitting the bamboo, cut it into bamboo strips with a width of 0.5 cm, and then weave the bamboo strips in a warp and weft pattern to obtain the bamboo mat.

[0132] Step 4, applying a growth inhibitor: Evenly spread a layer of growth inhibitor on the upper surface of the bamboo mat, with 1 g applied per square centimeter.

[0133] The growth inhibitor is a mixed solution prepared by mixing chlormequat chloride: tiabendazole: matrine: water in a mass ratio of 1:1:10:10000. The growth inhibitor is prepared on-site and used after thorough mixing.

[0134] Step 5, filling with filter materials: The operation is the same as in Example 1.

[0135] Blank

[0136] A method for preventing the rapid propagation of wetland aquatic plants, comprising:

[0137] First step, site cleaning: All trees, stumps, tree roots, weeds, silt, sediment, garbage, and sundries within the site cleaning scope shall be completely removed, and the site cleaning thickness is 300 mm.

[0138] For energy conservation and environmental protection, the topsoil layer with a depth of 0.3 m within the site shall be stockpiled for future greening and beautification purposes. The removed topsoil shall not be used for site backfilling and levee filling.

[0139] Second step, laying rubble: After the site cleaning is completed, lay a layer of rubble to form a rubble layer. The thickness of the rubble layer is 50 cm, and the particle size of the rubble is 20 cm.

[0140] Third step, filter material filling: The operation is the same as that in Example 1.

[0141] Control 1

[0142] A method for preventing the rapid propagation of wetland aquatic plants, including:

[0143] First step, site cleaning: All trees, stumps, tree roots, weeds, silt, sediment, garbage, and sundries within the site cleaning scope shall be completely removed, and the site cleaning thickness is 300 mm.

[0144] For energy conservation and environmental protection, the topsoil layer with a depth of 0.3 m within the site shall be stockpiled for future greening and beautification purposes. The removed topsoil shall not be used for site backfilling and levee filling.

[0145] Second step, laying rubble: After the site cleaning is completed, lay a layer of rubble to form a rubble layer. The thickness of the rubble layer is 50 cm, and the particle size of the rubble is 20 cm.

[0146] Third step, laying bamboo mat: Lay a bamboo mat on the upper surface of the rubble layer. The length of the bamboo mat is 80 cm, the width is 50 cm, and the thickness is 2 cm. The manufacturing method of the bamboo mat is: After splitting the bamboo, cut it into bamboo strips with a width of 0.5 cm, and then weave the bamboo strips in warp and weft to obtain the bamboo mat.

[0147] Fourth step, filter material filling: The operation is the same as that in Example 1.

[0148] Control 2

[0149] A method for preventing the rapid propagation of wetland aquatic plants, including:

[0150] First step, site cleaning: All trees, stumps, tree roots, weeds, silt, sediment, garbage, and sundries within the site cleaning scope shall be completely removed, and the site cleaning thickness is 300 mm.

[0151] For energy conservation and environmental protection, the topsoil layer within the site with a depth of 0.3 m should be stockpiled for future greening and beautification purposes. The removed topsoil cannot be used for site backfilling and levee filling.

[0152] Step 2, laying crushed stones: After the site cleaning is completed, lay a layer of crushed stones to form a crushed stone layer. The thickness of the crushed stone layer is 50 cm, and the particle size of the crushed stones is 20 cm.

[0153] Step 3, laying bamboo mat: Lay a bamboo mat on the upper surface of the crushed stone layer. The length of the bamboo mat is 80 cm, the width is 50 cm, and the thickness is 2 cm. The production method of the bamboo mat is as follows: After splitting the bamboo, cut it into bamboo strips with a width of 0.5 cm, and then weave the bamboo strips in a warp and weft pattern to obtain the bamboo mat.

[0154] Step 4, applying growth inhibitor: Evenly spread a layer of growth inhibitor on the upper surface of the bamboo mat, spreading 1 g per square centimeter.

[0155] The growth inhibitor is a mixed solution formed by mixing chlormequat chloride and water in a mass ratio of 12:10000. The growth inhibitor is prepared on-site and used after thorough mixing.

[0156] Step 5, filling filter materials: The operation is the same as in Example 1.

[0157] Control 4

[0158] A method for preventing the rapid propagation of wetland aquatic plants, including:

[0159] Step 1, site cleaning: Completely remove all trees, stumps, tree roots, weeds, silt, silt sand, garbage, and sundries within the site cleaning range. The site cleaning thickness is 300 mm.

[0160] For energy conservation and environmental protection, the topsoil layer within the site with a depth of 0.3 m should be stockpiled for future greening and beautification purposes. The removed topsoil cannot be used for site backfilling and levee filling.

[0161] Step 2, laying crushed stones: After the site cleaning is completed, lay a layer of crushed stones to form a crushed stone layer. The thickness of the crushed stone layer is 50 cm, and the particle size of the crushed stones is 20 cm.

[0162] Step 3, laying bamboo mat: Lay a bamboo mat on the upper surface of the crushed stone layer. The length of the bamboo mat is 80 cm, the width is 50 cm, and the thickness is 2 cm. The production method of the bamboo mat is as follows: After splitting the bamboo, cut it into bamboo strips with a width of 0.5 cm, and then weave the bamboo strips in a warp and weft pattern to obtain the bamboo mat.

[0163] Step 4, applying growth inhibitor: Evenly spread a layer of growth inhibitor on the upper surface of the bamboo mat, spreading 1 g per square centimeter.

[0164] The growth inhibitor is a mixed solution prepared by mixing matrine and water in a mass ratio of 12:10000. The growth inhibitor is prepared on-site and used after thorough mixing.

[0165] Step 5, filter material filling: The operation is the same as in Example 1. Control 3

[0166] A method for preventing the rapid reproduction of wetland aquatic plants, including:

[0167] Step 1, site cleaning: All trees, stumps, tree roots, weeds, silt, sediment, garbage, and sundries within the site cleaning range are completely removed, and the site cleaning thickness is 300 mm.

[0168] For energy conservation and environmental protection, the topsoil layer of 0.3 m deep within the site should be stockpiled for future greening and beautification purposes. The removed topsoil cannot be used for site backfilling and levee filling.

[0169] Step 2, laying of crushed stones: After the site cleaning is completed, a layer of crushed stones is laid to form a crushed stone layer. The thickness of the crushed stone layer is 50 cm, and the particle size of the crushed stones is 20 cm.

[0170] Step 3, laying of bamboo mat: A bamboo mat is laid on the upper surface of the crushed stone layer. The length of the bamboo mat is 80 cm, the width is 50 cm, and the thickness is 2 cm. The manufacturing method of the bamboo mat is as follows: After splitting the bamboo, it is cut into bamboo strips with a width of 0.5 cm, and then the bamboo strips are woven in warp and weft to obtain the bamboo mat.

[0171] Step 4, spreading of growth inhibitor: A layer of growth inhibitor is evenly spread on the upper surface of the bamboo mat, with 1 g spread per square centimeter.

[0172] The growth inhibitor is a mixed solution prepared by mixing tiabendazole and water in a mass ratio of 12:10000. The growth inhibitor is prepared on-site and used after thorough mixing.

[0173] Step 5, filter material filling: The operation is the same as in Example 1.

[0174] Echinochloa caudata is a weed, and its excessive growth will affect the filtration effect of the wetland filter. Taking Echinochloa caudata as the test object, after the wetland is constructed, Echinochloa caudata seeds are sown at 100 seeds per square meter, and the observation period is 30 days to test the inhibitory effect of different methods on Echinochloa caudata. See Table 2 for the results of the inhibitory effect on the wetland plant Echinochloa caudata. In Table 2, the survival rate refers to the number of surviving plants per square meter with 100 seeds sown, the growth rate is the average growth rate in 30 days, that is, the value of the plant height in Table 2 divided by 30, and the number of primary tillers is the number of tillers in the first time. In Table 2, three parallel tests are conducted for each test group, and the average value is taken.

[0175] Table 2 Inhibitory effect on plants

[0176] Experimental grouping Survival rate (%) Plant height (cm) Growth rate (cm / d) Number of primary tillers (pcs) Example 1 23±1 10.15±0.07 0.34 11.67±0.58 Example 2 22±1 9.11±0.11 0.30 11.33±0.58 Example 3 21±1 9.08±0.10 0.30 11.33±0.58 Example 4 25±2 8.47±0.07 0.28 11.00±0.00 Example 5 25±1 8.55±0.13 0.29 10.33±0.58 Example 6 27±2 8.84±0..08 0.29 11.67±0.58 Example 7 24±1 10.12±0..01 0.34 12.67±0.58 Example 8 22±2 10.07±0.13 0.33 12.00±1.00 Blank 83±4 27.25±0..09 0.91 27.33±1.15 Control 1 80±1 26.41±0.41 0.88 25.67±1.53 Control 2 50±2 18.35±0.04 0.61 17.33±0.58 Control 3 57±3 21.08±0.04 0.70 17.33±0.58 Control 4 34±1 21.17±0.06 0.70 16.67±0.58

[0177] The results of the economic benefit analysis are as follows: The method of Example 1 was successfully applied in the subsurface shallow wetland of Dengbeiqiao Wetland in Eryuan County. Through investigation, it was found that compared with the traditional method without using bamboo mat paving and growth inhibitors, the service life of the filter material of the method in this example was extended by 1 time.

[0178] The results of the social benefit analysis are as follows: After the method of Example 1 was put into operation, the amount of COD discharged into the environment each year was reduced by 11.21 tons, and the ammonia nitrogen was reduced by 0.48 tons. The water quality of Yong'an River has been maintained at Class II for a long time.

[0179] It should be noted that when the present invention involves a numerical range, it should be understood that any value between the two endpoints of each numerical range and the two endpoints can be selected. Since the step methods adopted are the same as those in the embodiments, in order to prevent repetition, the present invention describes the preferred embodiments. Although the preferred embodiments of the present invention have been described, once those skilled in the art know the basic creative concept, additional changes and modifications can be made to these embodiments. Changes and modifications that do not depart from the inventive concept of the present invention all fall within the scope of the present invention. That is, those skilled in the art can make various changes and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the equivalent technology of the present invention, the present invention also intends to include these modifications and variations.

Claims

1. Use of a growth inhibitor in preventing the reproduction of Echinochloa caudata in wetlands, characterized in that, The methods of application include: The first step is site cleaning; The second step is to lay rubble to form a rubble layer; The third step is to lay bamboo mat: Lay a bamboo mat on the upper surface of the rubble layer. The length of the bamboo mat is 30 cm to 80 cm, the width is 30 cm to 50 cm, and the thickness is 1 cm to 2 cm; The fourth step is filter material filling; The fifth step is to treat with a growth inhibitor according to any one of the following methods: (1) Sprinkle the growth inhibitor on the upper surface of the bamboo mat, and then carry out filter material filling; (2) Sprinkle the growth inhibitor after filter material filling, and sprinkle 1 g to 2 g of the growth inhibitor per square centimeter of the wetland; (3) Sprinkle the growth inhibitor on the surface of the wetland after the filter material filling is completed and after filtering for half a year; Among them, the growth inhibitor is a mixed solution formed by mixing chlormequat chloride: tiibenzuron: matrine: water in a mass ratio of 1:1:5 - 10:10000; Sow Echinochloa caudata seeds after the wetland is successfully constructed; Preventing the reproduction of Echinochloa caudata in the wetland means reducing the survival rate, growth rate and the number of primary tillers of Echinochloa caudata.

2. The application according to claim 1, characterized in that, The mass ratio of chlormequat chloride: tiibenzuron: matrine: water is 1:1:10:10000.

3. The application according to claim 1, wherein The mass ratio of chlormequat chloride: tiibenzuron: matrine: water is 1:1:5:10000.

4. The application according to claim 1, wherein The manufacturing method of the bamboo mat is: After splitting the bamboo, cut it into bamboo strips with a width of 0.5 cm to 1 cm, and then weave the bamboo strips in warp and weft to obtain the bamboo mat.

5. The application according to claim 3, wherein The thickness of the rubble layer is 30 cm to 80 cm, and the particle size of the rubble is 5 cm to 20 cm.

6. The application according to claim 5, wherein There are 2 layers of filter materials in total, which are the first mixed filter material and the second mixed filter material from bottom to top in sequence; The ratio and particle size of the first mixed filter material are as follows: The first composite high-efficiency ecological phosphorus-removing filter material: mass percentage 70%, particle size 5 mm; The first gravel filter material: mass percentage 20%, particle size 3 cm; The first denitrifying filter material: mass percentage 10%, particle size 5 mm; The materials of the first mixed filter material are mixed and reserved for use; The ratio and particle size of the second mixed filter material are as follows: The second composite high-efficiency ecological phosphorus-removing filter material: mass percentage 70%, particle size 3 mm; The second gravel filter material: mass percentage 20%, particle size 3 cm; The second denitrifying filter material: mass percentage 10%, particle size 5 mm; The materials of the second mixed filter material are mixed and reserved for use.

7. The application according to claim 6, characterized in that, The thicknesses of both the first mixed filter material and the second mixed filter material are 5 cm to 20 cm.

Images