CN111687207A - Method for restoring polluted wetland by using bamboo reed charcoal - Google Patents
Method for restoring polluted wetland by using bamboo reed charcoal Download PDFInfo
- Publication number
- CN111687207A CN111687207A CN202010419358.3A CN202010419358A CN111687207A CN 111687207 A CN111687207 A CN 111687207A CN 202010419358 A CN202010419358 A CN 202010419358A CN 111687207 A CN111687207 A CN 111687207A
- Authority
- CN
- China
- Prior art keywords
- planting
- arundo donax
- soil
- reed
- charcoal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/10—Reclamation of contaminated soil microbiologically, biologically or by using enzymes
- B09C1/105—Reclamation of contaminated soil microbiologically, biologically or by using enzymes using fungi or plants
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B79/00—Methods for working soil
- A01B79/02—Methods for working soil combined with other agricultural processing, e.g. fertilising, planting
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/10—Growth substrates; Culture media; Apparatus or methods therefor based on or containing inorganic material
- A01G24/12—Growth substrates; Culture media; Apparatus or methods therefor based on or containing inorganic material containing soil minerals
- A01G24/15—Calcined rock, e.g. perlite, vermiculite or clay aggregates
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/20—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/20—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
- A01G24/22—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material containing plant material
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/20—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
- A01G24/28—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material containing peat, moss or sphagnum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/002—Reclamation of contaminated soil involving in-situ ground water treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion
Abstract
The invention discloses a method for restoring polluted wetland by using Arundo donax Linn, which comprises the following steps: (1) digging planting holes and planting ditches in the polluted wetland; (2) laying bamboo reed on the planting holes and the planting ditches and covering soil; (3) planting bamboo reed seedlings on a planting matrix; (4) planting the giant reed seedlings obtained in the step (3) in the planting holes; (5) harvesting the arundo donax seedlings, then performing high-temperature pyrolysis to obtain the arundo donax charcoal, and returning the arundo donax charcoal to the step (2) and/or the step (3) for preparing the planting substrate. By adopting the method, the problem of high restoration cost of the polluted wetland is solved, secondary pollution is avoided, the growth of the arundo donax linn is promoted, the biomass is improved, the root length, the root volume, the root surface area and the root tip number of the arundo donax linn are also obviously increased, the tillering capability is enhanced, the cyclic utilization of the arundo donax linn resource is realized, and the environmental sustainability development is facilitated.
Description
Technical Field
The invention belongs to the field of agriculture, and particularly relates to a method for restoring polluted wetland by using bamboo reed charcoal.
Background
With the rapid advance of the urbanization process, the development of industrialization and modern agriculture brings certain pollution to soil and water, the pollution of industrial and mining residues, municipal garbage and the like causes the heavy metal content of the soil to exceed the standard, the water eutrophication and other problems frequently occur, and the biodegradation capacity is gradually reduced along with the accumulation of pollution conditions, so that the soil needs to be repaired by other means.
For heavy metals and water pollutants, the current restoration methods are many and mainly include three ways of physical, chemical and biological restoration, specifically including a landfill method, a soil conditioner method, a "hyperaccumulator" method and the like, but the physical restoration cost is high, the chemical restoration may have a secondary pollution problem, and some plants have a long restoration period, are single in treatment pollution, and cannot guarantee the continuity development of restoration, so that the method cannot be popularized and applied in a large scale.
Therefore, the existing remediation techniques for contaminated soil need to be explored.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, one purpose of the invention is to provide a method for restoring polluted wetland by using arundo donax linn, which not only solves the problem of high restoration cost of the polluted wetland and avoids secondary pollution, but also promotes the growth of the arundo donax linn, improves the biomass, obviously increases the root length, the root volume, the root surface area and the root tip number of the arundo donax linn, enhances the tillering capability, realizes the cyclic utilization of the arundo donax linn resource, and is beneficial to the sustainable development of the environment.
In one aspect of the invention, the invention provides a method for restoring polluted wetland by using Arundo donax Linn. According to an embodiment of the invention, the method comprises:
(1) digging planting holes and planting ditches in the polluted wetland;
(2) laying bamboo reed on the planting holes and the planting ditches and covering soil;
(3) planting bamboo reed seedlings on a planting matrix;
(4) planting the giant reed seedlings obtained in the step (3) in the planting holes;
(5) harvesting the arundo donax seedlings, then performing high-temperature pyrolysis to obtain the arundo donax charcoal, and returning the arundo donax charcoal to the step (2) and/or the step (3) for preparing the planting substrate.
According to the method for restoring the polluted wetland by using the arundo donax linn, provided by the embodiment of the invention, the planting holes and the planting ditches are dug in the polluted wetland, then the arundo donax linn is laid in the planting holes and the planting ditches and covered with soil, and then the arundo donax linn seedlings cultivated on the planting substrate are transplanted into the planting holes, because the arundo donax linn has large biomass and strong ecological adaptability, can resist the environments such as salt and alkali, short-term water logging and the like, has certain tolerance and adsorption capacity to most heavy metals and N, P in eutrophic water, has low requirement on soil fertility, has the release amount of oxygen in the growth process of up to 6 t/mu, further increases the adsorption effect on pollutants in the soil due to the rapid growth and multiple cutting of the arundo donax linn, has strong alkali property, can obviously improve the pH value of the soil, reduces the biological effectiveness of the heavy metals, and has the capacity of improving, the application of the bamboo charcoal powder to the polluted soil can improve the carbon content of the soil, adjust the water holding capacity of the soil, and has great treatment effect on the increase of soil nutrients and exogenous pollutants, and the addition of the bamboo charcoal can enhance the growth capacity of the root system of the arundo donax linn and promote the growth of the arundo donax linnMn、TN、NH4 +Has high removal rate, reduces the phosphorus concentration to 0.001mg/L, has adsorption capacity on heavy metals such as lead, cadmium, mercury and the like in wetland soil, and obtains the arundo donax linn by high-temperature pyrolysis after harvesting arundo donax linn seedlings to be returned to be used as planting holes and planting ditches for paving the arundo donax linn and/or used for planting the arundo donax linn in the planting holes and the planting ditchesThe preparation of the planting substrate can realize the cyclic utilization of the arundo donax linn resources and is beneficial to the sustainable development of the environment. Therefore, the method not only solves the problem of high restoration cost of the polluted wetland and avoids secondary pollution, but also promotes the growth of the arundo donax linn, improves the biomass, obviously increases the root length, the root volume, the root surface area and the root tip number of the arundo donax linn, enhances the tillering capability, realizes the cyclic utilization of the arundo donax linn resources, and is beneficial to the sustainable development of the environment.
In addition, the method for restoring the polluted wetland by using the arundo donax linn according to the embodiment of the invention can also have the following additional technical characteristics:
in some embodiments of the invention, in the step (1), the planting hole has a depth of 24-30 cm and a width of 8-12 cm.
In some embodiments of the invention, in the step (1), the depth of the planting furrows is 15-25 cm.
In some embodiments of the invention, in the step (2), the thickness of the bamboo reed charcoal laid in the planting hole is 2-4 cm, and the thickness of the covering soil is 1-3 cm.
In some embodiments of the invention, in the step (2), the bamboo reed charcoal is laid in the planting furrows to a thickness of 1-3 cm.
In some embodiments of the present invention, in step (3), the planting substrate is prepared by the following method: the bamboo reed charcoal, peat soil, perlite and decomposed manure are mixed according to the mass ratio of (0-30): (5-30): (5-15): (5-20), adding the mixture, composting and decomposing, adjusting the pH value to be neutral, and mixing with water to obtain the seedling culture substrate.
In some embodiments of the present invention, the time for the lid retting is 30-45 days.
In some embodiments of the invention, the planting substrate has a water holding capacity of 50 to 80 wt%.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a flow chart illustrating a method for restoring polluted wetland by using bamboo reed charcoal according to an embodiment of the invention.
Detailed Description
The following embodiments of the present invention are described in detail, and it should be noted that the following embodiments are exemplary only, and are not to be construed as limiting the present invention. In addition, all reagents used in the following examples are commercially available or can be synthesized according to methods herein or known, and are readily available to those skilled in the art for reaction conditions not listed, if not explicitly stated.
In one aspect of the invention, the invention provides a method for restoring polluted wetland by using Arundo donax Linn. According to an embodiment of the invention, with reference to fig. 1, the method comprises:
s100: digging planting holes and planting ditches in polluted wetland
In the step, firstly, the polluted soil is leveled, and then planting holes and planting ditches are dug in the polluted wetland, wherein the planting ditches and the planting holes are distributed at intervals, the depth of the planting holes is 24-30 cm, the width of the planting holes is 8-12 cm, the depth of the planting ditches is 15-25 cm, preferably, the depth of the planting holes is 27 cm, the width of the planting holes is 10 cm, and the depth of the planting ditches is 20 cm.
S200: laying bamboo charcoal in planting hole and planting ditch, and covering with soil
In the step, bamboo reeds are laid in the planting holes and the planting ditches and covered with soil, preferably, the bamboo reeds are laid in the planting holes and are 2-4 cm thick, the thickness of the covered soil is 1-3 cm, preferably, the thickness of the laid bamboo reeds is 3 cm, and the thickness of the covered soil is 2 cm; the thickness of bamboo reed charcoal laid in the planting ditch is 1-3 cm, the covering soil is level to the ground, and the thickness of bamboo reed charcoal laid is preferably 2 cm. The inventor finds that if the laying thickness of the reed carbon planting hole is too low, the effects of regulating the moisture of the wetland and adsorbing heavy metals cannot be achieved, and if the laying thickness of the reed carbon planting hole is too high, the cost input is increased; meanwhile, if the planting holes are covered with too high soil, the root of the giant reed seedlings is easily over-loaded, the problem of water tightness of the wetland is aggravated, the root of the giant reed seedlings cannot be contacted with air, so that the phenomena of root rot, suffocation and the like are caused, and if the planting holes are covered with too low soil, water is easily accumulated, and the nutrient absorption is insufficient. In addition, the laying thickness of the bamboo reed charcoal in the planting ditch is selected in the same way as the planting holes. Specifically, the arundo donax linn has the capacity of improving soil and sealing carbon dioxide in the atmosphere, has great treatment effect on the increase of soil nutrients and exogenous pollutants, and the growth capacity of the root system of the arundo donax linn can be enhanced and the growth of the arundo donax linn can be promoted by adding the arundo donax linn.
S300: planting bamboo reed seedlings on planting substrate
In the step, the planting matrix of the arundo donax seedlings is prepared by the following method: the bamboo reed charcoal, peat soil, perlite and decomposed manure are mixed according to the mass ratio of (0-30): (5-30): (5-15): (5-20), adding the mixture, composting for 30-45 days, adjusting the pH value to be neutral, mixing with water to obtain a planting matrix with the water holding capacity of 50-80 wt%, and planting the Arundo donax tissue culture seedlings on the planting matrix. The inventor finds that the bamboo reed charcoal contains rich organic carbon and a certain amount of mineral components, can provide nutrients for plants, can adjust the water holding capacity of soil due to the pore structure of the bamboo reed charcoal, can adsorb harmful substances in the soil, can cause excessive soil nutrients to burn roots if the content of the soil nutrients in a matrix is too high, and can reduce the water holding capacity of the matrix and reduce the nutrients in the matrix if the content of the soil nutrients in the matrix is too low; the peat soil can effectively reduce the problems of substrate plant diseases and insect pests, hardening and poor water retention, and if the proportion is too high in the substrate proportion, the economic cost is increased, and if the proportion is too low, the effective effect cannot be ensured; the perlite has high air permeability and high stability, can prevent plants from lodging and improve soil hardening, and can influence the fertility of the soil if the proportion is too high, and can cause poor air permeability and water permeability of the plants if the proportion is too low; the decomposed manure provides organic fertility for soil, and if the content of the manure in the substrate is too low, the manure cannot provide nutrients for plants, and if the content of the manure is too high, the plants can die due to water shortage. Therefore, the reed bamboo charcoal, peat soil, perlite and decomposed manure mixed according to the proportion are covered, piled, retted and decomposed to obtain the planting substrate which has excellent fertility and can avoid the death problem caused by poor air permeability of the reed seedlings.
S400: planting the giant reed seedling in the planting hole
In the step, the luzhou bamboo seedlings with soil, which are consistent in size and strong in growth, are selected and planted in planting holes, and then the planting holes are covered with soil and leveled. The inventor finds that the giant reed has large biomass and strong ecological adaptability, can resist the environments of salt, alkali, short-term flooding and the like, has certain tolerance and adsorption capacity to N, P in most heavy metals and eutrophic water bodies, has low requirement on soil fertility, has the release amount of oxygen in the growth process as high as 6 t/mu, and can effectively adsorb COD (chemical oxygen demand) in the micro-polluted wetland by planting the giant reed in the polluted soilMn、TN、NH4 +Has higher removal rate, reduces the phosphorus concentration to 0.001mg/L, and has adsorption capacity on heavy metals such as lead, cadmium, mercury and the like in the wetland soil.
S500: harvesting the giant reed seedlings, performing high-temperature digestion, and returning the giant reed carbon to the step S200 and/or the step S300
In the step, the giant reed seedlings are harvested after growing to 2-2.5 m, then high-temperature pyrolysis is carried out to obtain the giant reed charcoal, and the giant reed charcoal is returned to the step S200 to be used as the giant reed charcoal laid in planting holes and planting ditches and/or used for preparing the planting matrix in the step S300. Therefore, the giant reed is harvested, subjected to high-temperature pyrolysis and recycled, and the giant reed resource can be recycled, so that the environmental sustainability development is facilitated. It should be noted that, those skilled in the art can select the conditions of pyrolysis at high temperature according to actual needs, as long as the arundo donax linn can be converted into arundo donax linn, and details are not described herein.
According to the method for restoring the polluted wetland by using the arundo donax linn, the planting holes and the planting ditches are dug in the polluted wetland, then the arundo donax linn is laid in the planting holes and the planting ditches and covered with soil, and then the arundo donax linn seedlings cultured on the planting substrate are transplanted into the planting holesFlooding and other environments, has certain tolerance and adsorption capacity to most heavy metals and N, P in eutrophic water, the requirement on soil fertility is not high, the release amount of oxygen in the growth process is up to 6 t/mu, the adsorption effect on pollutants in soil is further increased due to the rapid growth and multiple cutting of the giant reed, the arundo donax linn has stronger alkalinity, can obviously improve the pH value of soil and reduce the bioavailability of heavy metals, has the capability of improving the soil and sealing carbon dioxide in the atmosphere, can improve the carbon content of the soil and adjust the water holding capacity of the soil when being applied to the polluted soil, the reed bamboo charcoal wetland treatment method has a great effect on increasing soil nutrients and treating exogenous pollutants, and the addition of the reed bamboo charcoal can enhance the growth capacity of the root system of the reed and promote the growth of the reed.Mn、TN、NH4 +The method has high removal rate, the phosphorus concentration is reduced to 0.001mg/L, the method has adsorption capacity on heavy metals such as lead, cadmium, mercury and the like in wetland soil, and the reed seedlings are harvested and subjected to high-temperature pyrolysis to obtain the reed bamboo charcoal, and the reed bamboo charcoal is returned to be used as planting holes and planting ditches for laying the reed bamboo charcoal and/or used for preparing a planting matrix, so that the cyclic utilization of the reed resources can be realized, and the method is favorable for the sustainable development of the environment. Therefore, the method not only solves the problem of high restoration cost of the polluted wetland and avoids secondary pollution, but also promotes the growth of the arundo donax linn, improves the biomass, obviously increases the root length, the root volume, the root surface area and the root tip number of the arundo donax linn, enhances the tillering capability, realizes the cyclic utilization of the arundo donax linn resources, and is beneficial to the sustainable development of the environment.
The invention will now be described with reference to specific examples, which are intended to be illustrative only and not to be limiting in any way.
Example 1
(1) Firstly, the polluted wetland soil (the polluted wetland soil contains COD)Mn(5.36mg·L-1)、TN(2.65mg·L-1)、NH4 +(1.27mg·L-1)、P(0.132mg·L-1) The soil contained heavy metal lead (326.8 mg/kg)-1)、Cadmium (245.1mg kg)-1) And mercury (89.5mg kg)-1) Carrying out flattening, and then digging planting holes and planting ditches in the polluted wetland, wherein the planting ditches and the planting holes are distributed at intervals, the depth of the planting holes is 24 cm, the width of the planting holes is 8 cm, and the depth of the planting ditches is 25 cm;
(2) paving bamboo reeds in the planting holes and the planting ditches and covering soil, wherein the thickness of the bamboo reeds paved in the planting holes is 4 cm, the thickness of the covering soil is 1 cm, the thickness of the bamboo reeds paved in the planting ditches is 3 cm, and the covering soil is level to the ground;
(3) uniformly mixing peat soil, perlite and decomposed manure (mixing peat soil, perlite and decomposed manure at a mass ratio of 25: 10: 15), covering, retting for 30 days for decomposition, adjusting the pH value to be neutral, mixing with water to obtain a planting matrix with a water holding capacity of 80 wt%, growing seedlings in the planting matrix, selecting uniflower lubes with soil with consistent sizes and strong growth, planting the seedlings in planting holes, covering soil, leveling, harvesting after the arundo donax linn seedlings grow to 2-2.5 m, performing high-temperature pyrolysis to obtain arundo donax linn, and returning the arundo donax linn to be used as the planted bamboo in the planting holes and the planted reed ditches in the step S200.
Example 2
(1) Firstly, the polluted wetland soil (the polluted wetland soil contains COD)Mn(5.36mg·L-1)、TN(2.65mg·L-1)、NH4 +(1.27mg·L-1)、P(0.132mg·L-1) The soil contained heavy metal lead (326.8 mg/kg)-1) Cadmium (245.1 mg/kg)-1) And mercury (89.5mg kg)-1) Leveling, and digging planting holes and planting furrows in the polluted wetland, wherein the planting furrows and the planting holes are distributed at intervals, the depth of the planting holes is 30 cm, the width of the planting holes is 12 cm, and the depth of the planting furrows is 15 cm;
(2) paving bamboo reeds in the planting holes and the planting ditches, and covering soil, wherein the thickness of the bamboo reeds paved in the planting holes is 2 cm, the thickness of the covering soil is 3 cm, the thickness of the bamboo reeds paved in the planting ditches is 1 cm, and the covering soil is level to the ground;
(3) mixing peat soil, perlite and decomposed manure uniformly (mixing peat soil, perlite and decomposed manure at a mass ratio of 25: 5: 20), covering, retting for 45 days for decomposition, adjusting the pH value to be neutral, mixing with water to obtain a planting matrix with water holding capacity of 50 wt%, growing seedlings in the planting matrix, selecting unibract arundo donax seedlings with soil and strong in growth size, planting the seedlings in planting holes, covering soil, leveling, harvesting after the arundo donax seedlings grow to 2-2.5 m, performing high-temperature pyrolysis to obtain arundo donax, and returning the arundo donax to the step S200 to be used as the planted arundo donax in the planting holes and the planting ditches.
Example 3
(1) Firstly, the polluted wetland soil (the polluted wetland soil contains COD)Mn(5.36mg·L-1)、TN(2.65mg·L-1)、NH4 +(1.27mg·L-1)、P(0.132mg·L-1) The soil contained heavy metal lead (326.8 mg/kg)-1) Cadmium (245.1 mg/kg)-1) And mercury (89.5mg kg)-1) Leveling, and digging planting holes and planting ditches in the polluted wetland, wherein the planting ditches and the planting holes are alternately distributed, the depth of the planting holes is 27 cm, the width of the planting holes is 10 cm, and the depth of the planting ditches is 20 cm;
(2) paving bamboo reeds in the planting holes and the planting ditches and covering soil, wherein the thickness of the bamboo reeds paved in the planting holes is 3 cm, the thickness of the covering soil is 2 cm, the thickness of the bamboo reeds paved in the planting ditches is 2 cm, and the covering soil is level to the ground;
(3) mixing peat soil, perlite and decomposed manure uniformly (mixing peat soil, perlite and decomposed manure at a mass ratio of 30: 5: 15), covering, retting for 37 days for decomposition, adjusting the pH value to be neutral, mixing with water to obtain a planting matrix with a water holding capacity of 60 wt%, growing seedlings in the planting matrix, selecting unibract arundo donax seedlings with soil and strong in growth size, planting the seedlings in planting holes, covering soil, leveling, harvesting after the arundo donax seedlings grow to 2-2.5 m, performing high-temperature pyrolysis to obtain arundo donax, and returning the arundo donax to the step S200 to be used as the planted arundo donax for laying in the planting holes and the planting ditches.
Example 4
(1) Firstly, the polluted wetland soil (the polluted wetland soil contains COD)Mn(5.36mg·L-1)、TN(2.65mg·L-1)、NH4 +(1.27mg·L-1)、P(0.132mg·L-1) The soil contained heavy metal lead (326.8 mg/kg)-1) Cadmium (245.1 mg/kg)-1) And mercury (89.5mg kg)-1) Leveling, and digging planting holes and planting furrows in the polluted wetland, wherein the planting furrows and the planting holes are distributed at intervals, the depth of the planting holes is 26 cm, the width of the planting holes is 11 cm, and the depth of the planting furrows is 22 cm;
(2) paving bamboo reeds in the planting holes and the planting ditches and covering soil, wherein the thickness of the bamboo reed is 3.5 cm when the bamboo reed is paved in the planting holes, the thickness of the covering soil is 1.5 cm, the thickness of the bamboo reed is 2.5 cm when the bamboo reed is paved in the planting ditches, and the covering soil is leveled with the ground;
(3) uniformly mixing the reed bamboo charcoal, peat soil, perlite and decomposed manure (mixing the reed bamboo charcoal, peat soil, perlite and decomposed manure in a mass ratio of 15: 25: 5: 5), covering, composting for 42 days, adjusting the pH value to be neutral, mixing with water to obtain a planting matrix with the water holding capacity of 70 wt%, then growing seedlings in the planting matrix, finally selecting the reed seedlings with soil balls and strong in growth, planting the reed seedlings in planting holes, covering soil, leveling, harvesting after the reed seedlings grow to 2-2.5 m, performing high-temperature pyrolysis to obtain the reed bamboo charcoal, and returning the reed charcoal to the step S200 as the reed bamboo charcoal laid in the planting holes and the planting ditches and the step S300 for preparing the planting matrix.
And (3) testing: taking the first year-grown arundo donax of examples 1-4, measuring the biomass thereof, and then taking the COD of the wetland soil in the wetlandMn、TN、NH4 +P, heavy metals lead, cadmium and mercury were tested and the test results are shown in table 1.
Table 1 examples 1-4 first annual growth of arundo donax biomass and corresponding wetland soil contaminant content
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (8)
1. A method for restoring polluted wetland by using Arundo donax Linn is characterized by comprising the following steps:
(1) digging planting holes and planting ditches in the polluted wetland;
(2) laying bamboo reed on the planting holes and the planting ditches and covering soil;
(3) planting bamboo reed seedlings on a planting matrix;
(4) planting the giant reed seedlings obtained in the step (3) in the planting holes;
(5) harvesting the arundo donax seedlings, then performing high-temperature pyrolysis to obtain the arundo donax charcoal, and returning the arundo donax charcoal to the step (2) and/or the step (3) for preparing the planting substrate.
2. The method according to claim 1, wherein in the step (1), the planting holes have a depth of 24-30 cm and a width of 8-12 cm.
3. The method according to claim 1 or 2, wherein in step (1), the depth of the planting furrows is 15-25 cm.
4. The method as claimed in claim 1, wherein in the step (2), the thickness of the bamboo reed charcoal laid in the planting hole is 2-4 cm, and the thickness of the covering soil is 1-3 cm.
5. The method according to claim 1 or 4, wherein in the step (2), the thickness of the bamboo reed charcoal laid in the planting furrows is 1-3 cm.
6. The method according to claim 1, wherein, in step (3), the planting substrate is prepared by the following method:
the bamboo reed charcoal, peat soil, perlite and decomposed manure are mixed according to the mass ratio of (0-30): (5-30): (5-15): (5-20), adding the mixture, composting and decomposing, adjusting the pH value to be neutral, and mixing with water to obtain the seedling culture substrate.
7. The method of claim 6, wherein said covered retting is performed for a period of 30 to 45 days.
8. The method according to claim 6 or 7, wherein the planting substrate has a water holding capacity of 50 to 80 wt%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010419358.3A CN111687207A (en) | 2020-05-18 | 2020-05-18 | Method for restoring polluted wetland by using bamboo reed charcoal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010419358.3A CN111687207A (en) | 2020-05-18 | 2020-05-18 | Method for restoring polluted wetland by using bamboo reed charcoal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111687207A true CN111687207A (en) | 2020-09-22 |
Family
ID=72477903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010419358.3A Pending CN111687207A (en) | 2020-05-18 | 2020-05-18 | Method for restoring polluted wetland by using bamboo reed charcoal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111687207A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116491356A (en) * | 2023-05-04 | 2023-07-28 | 云南省红河热带农业科学研究所 | Planting method for improving jackfruit quality |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1586748A (en) * | 2004-08-05 | 2005-03-02 | 韩志萍 | Repairing wetland heavy metal pollution technology by Arundo donax Linn plant |
| CN102701886A (en) * | 2012-05-23 | 2012-10-03 | 青岛贝尔卡环境生物工程有限公司 | Preparing and application method of Arundo donax biological charcoal serving as nitrogenous fertilizer synergist |
| CN103241838A (en) * | 2013-05-16 | 2013-08-14 | 重庆大学 | Method for improving ammonia nitrogen removal in constructed wetland by utilizing wetland harvesting plant |
| CN103253774A (en) * | 2013-06-04 | 2013-08-21 | 重庆大学 | Improved method for enhancing ammonia nitrogen removal effect of constructed wetland by using wetland harvested bamboo reeds |
| CN103772026A (en) * | 2014-01-13 | 2014-05-07 | 陈温福 | Charcoal-based rice seedling substrate and preparation method thereof |
| CN105850685A (en) * | 2016-04-28 | 2016-08-17 | 凉山州蜀润农业科技有限公司 | Vegetable seedling substrate |
| CN107258514A (en) * | 2017-07-25 | 2017-10-20 | 沈阳农业大学 | A kind of charcoal tobacco non-soil culture nutrient matrix |
| CN109874637A (en) * | 2019-03-01 | 2019-06-14 | 王美林 | A kind of preparation method of high-efficiency environment friendly seedling medium |
-
2020
- 2020-05-18 CN CN202010419358.3A patent/CN111687207A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1586748A (en) * | 2004-08-05 | 2005-03-02 | 韩志萍 | Repairing wetland heavy metal pollution technology by Arundo donax Linn plant |
| CN102701886A (en) * | 2012-05-23 | 2012-10-03 | 青岛贝尔卡环境生物工程有限公司 | Preparing and application method of Arundo donax biological charcoal serving as nitrogenous fertilizer synergist |
| CN103241838A (en) * | 2013-05-16 | 2013-08-14 | 重庆大学 | Method for improving ammonia nitrogen removal in constructed wetland by utilizing wetland harvesting plant |
| CN103253774A (en) * | 2013-06-04 | 2013-08-21 | 重庆大学 | Improved method for enhancing ammonia nitrogen removal effect of constructed wetland by using wetland harvested bamboo reeds |
| CN103772026A (en) * | 2014-01-13 | 2014-05-07 | 陈温福 | Charcoal-based rice seedling substrate and preparation method thereof |
| CN105850685A (en) * | 2016-04-28 | 2016-08-17 | 凉山州蜀润农业科技有限公司 | Vegetable seedling substrate |
| CN107258514A (en) * | 2017-07-25 | 2017-10-20 | 沈阳农业大学 | A kind of charcoal tobacco non-soil culture nutrient matrix |
| CN109874637A (en) * | 2019-03-01 | 2019-06-14 | 王美林 | A kind of preparation method of high-efficiency environment friendly seedling medium |
Non-Patent Citations (2)
| Title |
|---|
| 徐德福等: "生物炭对人工湿地植物根系形态特征及净化能力的影响", 《环境科学》 * |
| 杨合法等: "《有机蔬菜生产技术指南》", 31 May 2018, 中国农业大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116491356A (en) * | 2023-05-04 | 2023-07-28 | 云南省红河热带农业科学研究所 | Planting method for improving jackfruit quality |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Cheung et al. | Revegetation of lagoon ash using the legume species Acacia auriculiformis and Leucaena leucocephala | |
| CN101234391B (en) | Combined method for repairing lead pollution soil | |
| Burgos et al. | Nitrogen mineralization and nitrate leaching of a sandy soil amended with different organic wastes | |
| WO2007111479A1 (en) | Soil improver with white-rot fungi and methods of using thereof for plant restoration and recover of heavy metals contaminated soil around abandoned mine area | |
| Whitford et al. | Decomposition of roots in a Chihuahuan Desert ecosystem | |
| CN102037845A (en) | Method for settling plants on manganese tailings | |
| Pardo et al. | The use of olive mill waste to promote phytoremediation | |
| CN111771670B (en) | Method for improving river sediment into planting soil | |
| CN112453036A (en) | System and method for repairing heavy metal contaminated soil by utilizing earthworm-plant coupling | |
| CN109894470A (en) | A kind of mine soil ecological restoring method | |
| CN114634817A (en) | Soil conditioner, soil improvement method and application thereof | |
| Lu et al. | Performance evaluation in composting of sewage sludge with different bulking agents | |
| CN112812779A (en) | Coastal petroleum polluted soil remediation agent and application thereof | |
| CN112705567A (en) | Repairing material, repairing method and application of ionic rare earth tailings area | |
| CN110720371A (en) | Method for restoring green sand by coal gasification solid slag | |
| CN111687207A (en) | Method for restoring polluted wetland by using bamboo reed charcoal | |
| CN115647029B (en) | Ecological restoration method for slag piling yard soil | |
| KR100968382B1 (en) | Oceanobacillus sp. strain having excellent salt-resistance and use thereof | |
| KR101201346B1 (en) | A Botanical Composition for The Surface of Slope | |
| Sharma et al. | Rehabilitation of lands mined for limestone in the Indian desert | |
| CN111616019A (en) | Vegetation matrix based on engineering residue soil and preparation method and application thereof | |
| CN106718816B (en) | Method for rapidly cultivating natural biological membrane of beach reclamation soil and application | |
| Silvan | Nutrient retention in a restored peatland buffer | |
| Parkinson et al. | Soils and plant nutrition | |
| CN117720383B (en) | Organomineral mixture and method for improving saline-alkali soil and raising seedlings by using same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200922 |