CN107459428A - A kind of farmland soil heavy metals cadmium renovation agent and its application method - Google Patents
A kind of farmland soil heavy metals cadmium renovation agent and its application method Download PDFInfo
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- CN107459428A CN107459428A CN201710774021.2A CN201710774021A CN107459428A CN 107459428 A CN107459428 A CN 107459428A CN 201710774021 A CN201710774021 A CN 201710774021A CN 107459428 A CN107459428 A CN 107459428A
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/80—Soil conditioners
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D3/00—Calcareous fertilisers
- C05D3/02—Calcareous fertilisers from limestone, calcium carbonate, calcium hydrate, slaked lime, calcium oxide, waste calcium products
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Pest Control & Pesticides (AREA)
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Biotechnology (AREA)
- General Chemical & Material Sciences (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Processing Of Solid Wastes (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention discloses a kind of farmland soil heavy metals cadmium renovation agent and its application method, belongs to soil pollution recovery technique field.Present invention solves the technical problem that be that one kind can be effectively restoring cadmium polluted, while the farmland soil heavy metals cadmium renovation agent increase soil fertility, the renovation agent include the material of following mass parts：10~35 parts of lime, 10~20 parts of vermiculite, 10~20 parts of hydrotalcite, 30~50 parts of decomposed rape cake.The application method of heavy metal cadmium renovation agent of the present invention, comprises the following steps：Apply farmland soil heavy metals cadmium renovation agent into Cd-polluted farmland, be mixed with water, balance 5~7 days, you can carry out planting plants.Farmland soil heavy metals cadmium renovation agent raw material sources of the present invention are extensive, and cost is cheap, and cadmium pollution regulation effect is good, not only environmentally friendly, and can also increase soil fertility, and promote plant strain growth, realistic feasibility is high, has wide promotion prospect.
Description
Technical field
The invention belongs to soil pollution recovery technique field, and in particular to a kind of farmland soil heavy metals cadmium renovation agent and its
Application method.
Background technology
Cadmium is used as has one of more highly toxic heavy metal to biology, strong with biogenic migration, easy absorption and accumulation and difficulty
The characteristic of degraded；When cadmium excessive concentration in soil, the growth, the development that not only harm the crops, will also be endangered by food chain
And health, therefore cadmium is listed in one of 5 big heavy metal of key monitoring.According to the relevent statistics, there is cadmium and surpass in the soil in China 7%
Mark phenomenon, it has also become the primary pollutant in China's soil pollution.
Mainly there are Physical, bioanalysis and chemical method etc. currently for the governance approach of agricultural land soil cadmium pollution.Wherein thing
Logos includes soil moved in improve the original/soil replacement method, method of digging, solidification and stabilization method etc., such recovery technique rapidly and efficiently, but pollutant after handling
Retain in deep soil, be easily transferred into underground water, and the stacking for being removed soil is also a great problem.Bioanalysis includes planting
Thing repairing method, biological restoration and microorganism remediation method, such recovery technique cost is low, will not cause secondary pollution, but repair
Complex velocity is slow and efficiency is low.Chemical method mainly includes elution method and chemical fixation etc..Chemical leaching method efficiency high, treating capacity
It is larger, repairing effect can be reached in a short time, but substantial amounts of waste liquid containing cadmium can be not only produced after medicament cleaning soil, also pole
Easily promote the loss of soil nutrient.The chemistry such as chemical fixation is precipitated using the passivator of addition with cadmium generation, absorption, complexing are instead
Migration and biological effectiveness of the cadmium in soil should be reduced, it is real so as to reducing toxic action of the cadmium to plant and microorganism
The reparation of existing cadmium pollution soil, this method rehabilitation cost is low, simple to operate, and improvement area is wider, has good application prospect.
There is researcher to disclose a kind of heavy metal-polluted soil curing agent (CN103242850A) for controlling crop Accumulation of heavy metals,
Composition includes polyisoprene, polyisoprene analog, sulfur-containing compound, organic materials, water, initiator, reducing agent etc., should
Renovation agent is preferable to the passivation effect of cadmium, but the formula organic reagent amount of application is larger, and cost is higher, easily causes secondary dirt
Dye；Also there is researcher using various mineral to adsorb the cadmium in soil, as CN105273721A discloses a kind of heavy metal cadmium agriculture
Field renovation agent, the components such as quick lime, lime stone, sepiolite, vermiculite, attapulgite are included, the renovation agent can effectively reduce soil
The bioavailability of middle cadmium so that the content of cadmium is less than standard setting in rice, but the fertility of soil decreases, no
Beneficial to growing for plant.Therefore it is environmentally friendly to develop one kind, and the cadmium renovation agent that and can is increase soil fertility is current
The most important thing that farmland cadmium is administered.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of farmland soil heavy metals cadmium renovation agent, and the renovation agent is not only
Farmland soil heavy metals cadmium pollution can be effectively administered, it is environmentally friendly, moreover it is possible to increase soil fertility.
In order to solve the above technical problems, the invention provides a kind of farmland soil heavy metals cadmium renovation agent, the renovation agent bag
Include the material of following mass parts：10~35 parts of lime, 10~20 parts of vermiculite, 10~20 parts of hydrotalcite, decomposed rape cake 30~
50 parts.
Wherein, in above-mentioned farmland soil heavy metals cadmium renovation agent, the water content 3%~6% of described decomposed rape cake,
Containing organic carbon 82.09%~85.05%, containing total nitrogen 7.6%~9.5%, containing total phosphorus 1.2%~2.1%, containing total potassium 1.85%~
2.07%.
Wherein, in above-mentioned farmland soil heavy metals cadmium renovation agent, described decomposed rape cake is made by following methods：Will
Rape cake crushes, and adds corn flour, sawdust and organic fertilizer fermentation microbial inoculum, after stirring and evenly mixing, adds water, then sealed fermenting, treat
Material all in black or dark brown, have bent fragrance without smelly, and it is soft frangible when, by its natural air drying.
Wherein, in above-mentioned farmland soil heavy metals cadmium renovation agent, described corn flour dosage adds for per kilogram rape cake
150~250g corn flour；Described sawdust dosage is that per kilogram rape cake adds 45~60g sawdusts；Described organic fertilizer
Fermenting agent dosage is the 3%~5% of rape cake, corn flour and sawdust gross mass；The dosage of described water is control material
The mass fraction of system reclaimed water is 60%~65%.
Wherein, in above-mentioned farmland soil heavy metals cadmium renovation agent, described lime, vermiculite, hydrotalcite and decomposed vegetable seed
The granularity of cake crosses 40 mesh sieves.
Present invention also offers the application method of above-mentioned farmland soil heavy metals cadmium renovation agent, comprise the following steps：Xiang Ge
Apply farmland soil heavy metals cadmium renovation agent in polluted agricultural land, be mixed with water, balance 5~7 days, you can carry out plantation work
Thing.
Wherein, in the application method of above-mentioned farmland soil heavy metals cadmium renovation agent, described farmland soil heavy metals cadmium is repaiied
The dosage of multiple agent is 250~500 kilograms/every mu Cd-polluted farmland.
Beneficial effects of the present invention：
Farmland soil heavy metals cadmium renovation agent provided by the invention, is not only played very well to farmland soil heavy metals cadmium pollution
Repair, can significantly reduce available Cd content in contaminated soil, reduce chromium bioavailability, moreover it is possible to improve soil fertilizer
Power, promote the normal growth of plant；The raw materials used wide material sources of the renovation agent, it is cheap, it is environmentally friendly, it will not produce
Secondary pollution；Prepare and Processing tecchnics are simple, it is easy to accomplish industrialization, realistic feasibility is high, has wide promotion prospect.
Embodiment
A kind of farmland soil heavy metals cadmium renovation agent, the renovation agent include the material of following mass parts：10~35 parts of lime,
10~20 parts of vermiculite, 10~20 parts of hydrotalcite, 30~50 parts of decomposed rape cake.
Lime can significantly improve the pH of acid soil, and heavy metal generation hydroxide or carbonate combine state is sunk
Form sediment, reduce its migration；In addition, the present invention adds 10~35 parts of lime, the pH of renovation agent and soil is adjusted, additionally it is possible to strengthen leech
Stone, hydrotalcite, decomposed rape cake are to the passivation of cadmium, the further effect consolidated and strengthen repairing heavy metal in soil.
10~20 parts of vermiculite is added in renovation agent of the present invention, its main component is：SiO2(37.43%), Al2O3
(12.98%), MgO (13.28%), Fe2O3(8.87%), CaO (7.7%), K2O (3.54%), TiO (1.37%) etc..Vermiculite
Loose porous structure, good water-retaining property is made it have, the permeability of soil can be improved, so as to suppress the soil caused by lime
The hardened problem of earth；In addition, the interlayer charge number of vermiculite is higher, cation exchange capacity (CEC) and absorption property are preferable, therefore can not only be right
Cadmium in soil has certain absorption property, moreover it is possible to keeps the fertility of soil.
10~20 parts of hydrotalcite is added in renovation agent of the present invention, hydrotalcite belongs to anion type laminated compound, due to it
Interlayer is rich in CO3 2-、OH-It is strong to the adsorption capacity of cadmium etc. a variety of anion, while its basic nature carried can also promote cadmium
Passivation, so as to reduce the usage amount of lime, avoid soil hardening.
The water content 3%~6% of decomposed rape cake in the present invention, containing organic carbon 82.09%~85.05%, containing total nitrogen
7.6%~9.5%, containing total phosphorus 1.2%~2.1%, containing total potassium 1.85%~2.07%.
Above-mentioned decomposed rape cake can be by being made by following methods：Rape cake is crushed, per kilogram rape cake adds 150
~250g corn flour, 45~60g sawdusts and gross mass are 3%~5% organic fertilizer fermentation microbial inoculum, after stirring and evenly mixing, add water
To the water content of mixed material up to 60%~65% (mass fraction), then sealed fermenting, treats material all in black or dark brown
Color, have bent fragrance without smelly, and it is soft frangible when, by its natural air drying.
30~50 parts of decomposed rape cake is added in renovation agent of the present invention, contains humus in decomposed rape cake, can be with
Cadmium in soil forms stable comple, so as to reduce the transportable property and biological effectiveness of cadmium；In addition, in decomposed rape cake
Containing trace elements such as nitrogen, phosphorus, potassium, the fertility of soil can be improved, so as to promote plant strain growth.
Present invention also offers the application method of above-mentioned farmland soil heavy metals cadmium renovation agent, comprise the following steps：Xiang Ge
Apply farmland soil heavy metals cadmium renovation agent in polluted agricultural land, be mixed with water, balance 5~7 days, you can carry out plantation work
Thing.
In order to ensure that heavy metal cadmium can be effectively passivated, while soil fertility is lifted, every mu of Cd-polluted farmland can apply agriculture
250~500 kilograms of field soil heavy metal cadmium renovation agent；It can also be adjusted and added according to actual Heavy Metals in Contaminated Soils cadmium concentration
Amount.
Because different soils water content is different, the addition of water can be determined according to the actual water content of soil, that will can repair
Multiple agent and soil are well mixed, and the addition of general water is content of water in system is not less than 10%.
Optimize, a kind of farmland soil heavy metals cadmium renovation agent, include the material of following mass parts：10~35 parts of lime,
10~20 parts of vermiculite, 10~20 parts of hydrotalcite, 30~50 parts of decomposed rape cake；Described lime, vermiculite, hydrotalcite and decomposed
Rape cake granularity cross 40 mesh sieves.
The application method of above-mentioned farmland soil heavy metals cadmium renovation agent, comprises the following steps：Apply into Cd-polluted farmland
Farmland soil heavy metals cadmium renovation agent, it is public that every mu of Cd-polluted farmland can apply farmland soil heavy metals cadmium renovation agent 250~500
Jin, turn over, water logging 5~7 days, you can carry out planting plants.
Following embodiment is only limitted to explain the present invention, and protection scope of the present invention should include in the whole of claim
Hold, be not limited only to the following examples.
Embodiment 1：
The farmland soil heavy metals cadmium renovation agent of the present embodiment, preparation method step are as follows：
1) decomposed rape cake preparation method：First rape cake is crushed, per kilogram rape cake adds 200g corn flour, 50g
Sawdust and 37g organic fertilizer fermentation microbial inoculums, after stirring and evenly mixing, the water content of mixed material is added water to up to 60% (mass fraction),
Then sealed fermenting, treat material all in black or dark brown, have bent fragrance without smelly, and it is soft frangible when, show dish
Seedcake fermentation is completed, now by its natural air drying.Its Contents of Main Components is as follows：Water content 3.3%, containing organic carbon 82.09%,
Containing total nitrogen 9.5%, containing total phosphorus 1.2%, containing total potassium 1.95%.
2) lime, vermiculite, hydrotalcite, decomposed rape cake are ground respectively, crosses 40 mesh sieves.
3) lime after sieving, vermiculite, hydrotalcite, decomposed rape cake are pressed into following mass parts respectively：30 parts, 20 parts,
17 parts, 33 parts are fully mixed, that is, obtain farmland soil heavy metals cadmium renovation agent.
Embodiment 2：
The farmland soil heavy metals cadmium renovation agent of the present embodiment, preparation method step are as follows：
1) decomposed rape cake preparation method：First rape cake is crushed, per kilogram rape cake adds 180g corn flour, 55g
Sawdust 49g organic fertilizer fermentation microbial inoculums, after stirring and evenly mixing, the water content of mixed material are added water to up to 65% (mass fraction), so
Sealed fermenting at room temperature afterwards, treat material all in black or dark brown, have bent fragrance without smelly, and it is soft frangible when, table
Bright rape cake fermentation is completed, now by its natural air drying.Its Contents of Main Components is as follows：Water content 3.2%, containing organic carbon
82.76%, containing total nitrogen 9.1%, containing total phosphorus 1.5%, containing total potassium 2.01%.
2) lime, vermiculite, hydrotalcite, decomposed rape cake are ground respectively, crosses 40 mesh sieves.
3) lime after sieving, vermiculite, hydrotalcite, decomposed rape cake are pressed into following mass parts respectively：25 parts, 20 parts,
20 parts, 35 parts are fully mixed, that is, obtain farmland soil heavy metals cadmium renovation agent.
Embodiment 3：
The farmland soil heavy metals cadmium renovation agent of the present embodiment, preparation method step are as follows：
1) decomposed rape cake preparation method：First rape cake is crushed, per kilogram rape cake adds 160g corn flour, 57g
Wood sawdust and 37g organic fertilizer fermentation microbial inoculums, after stirring and evenly mixing, the water content of mixed material is added water to up to 60% (mass fraction),
Then sealed fermenting at room temperature, treat material all in black or dark brown, have bent fragrance without smelly, and it is soft frangible when,
Show that rape cake fermentation is completed, now by its natural air drying.Its Contents of Main Components is as follows：Water content 3.5%, containing organic carbon
83.46%, containing total nitrogen 8.2%, containing total phosphorus 1.5%, containing total potassium 1.87%.
2) lime, vermiculite, hydrotalcite, decomposed rape cake are ground respectively, crosses 40 mesh sieves.
3) lime after sieving, vermiculite, hydrotalcite, decomposed rape cake are pressed into following mass parts respectively：30 parts, 15 parts,
20 parts, 35 parts are fully mixed, that is, obtain farmland soil heavy metals cadmium renovation agent.
Embodiment 4：
Repairing effect of the renovation agent of the present invention to farmland cadmium pollution soil is verified using pot experiment.Potted plant experiment
Plant is by taking pakchoi as an example.
Before experiment, the soil of certain Cd-polluted farmland 0~20cm soil layers is gathered, total cadmium content is 1.92mg/kg, and effective cadmium contains
Measure as 0.84mg/kg, after air-drying, grinding, cross 2mm sieves, mix, it is stand-by.Three parts of 1kg soil is taken, is separately added into 40g embodiments 1-
Renovation agent in 3,250mL water is added, basin is filled after mixing, and blank group is set, balance sows pakchoi after 7 days, after emergence, often
1 plant of basin final singling.During experiment, it is consistent per basin control measures.
Until pakchoi picking time, collecting its aerial part, the content of the biomass and cadmium per basin pakchoi is determined；And adopt
Collect now pedotheque, after air-drying, determine effective cadmium content in soil.Result of the test is shown in Table 1.
Pakchoi biomass, cadmium content and the effective cadmium content of soil under the potted plant experiment different disposal of table 1
As seen from the above table, compared with blank group (not adding any renovation agent), after cadmium renovation agent is application of in soil,
The biomass of pakchoi dramatically increases, and the content of effective cadmium in the cadmium content and soil in plant body is greatly reduced.Thus, demonstrate,prove
Understand the farmland soil heavy metals cadmium renovation agent of the present invention, the cadmium that can not only be passivated in soil, reduces its migration and biology can
Usability, and the growth of plant can also be promoted.
Claims (7)
1. farmland soil heavy metals cadmium renovation agent, it is characterised in that：Include the material of following mass parts：10~35 parts of lime, leech
10~20 parts of stone, 10~20 parts of hydrotalcite, 30~50 parts of decomposed rape cake.
2. farmland soil heavy metals cadmium renovation agent according to claim 1, it is characterised in that：The decomposed rape cake
Water content 3%~6%, containing organic carbon 82.09%~85.05%, containing total nitrogen 7.6%~9.5%, containing total phosphorus 1.2%~
2.1%, containing total potassium 1.85%~2.07%.
3. farmland soil heavy metals cadmium renovation agent according to claim 2, it is characterised in that：Described decomposed rape cake
It is made by following methods：Rape cake is crushed, corn flour, sawdust and organic fertilizer fermentation microbial inoculum is added, after stirring and evenly mixing, adds
Water, then sealed fermenting, treat material all in black or dark brown, have bent fragrance without smelly, and it is soft frangible when, by it
Natural air drying.
4. farmland soil heavy metals cadmium renovation agent according to claim 3, it is characterised in that：Described corn flour dosage is
Per kilogram rape cake adds 150~250g corn flour；Described sawdust dosage is that per kilogram rape cake adds 45~60g sawmilling
Powder；Described organic fertilizer fermentation microbial inoculum dosage is the 3%~5% of rape cake, corn flour and sawdust gross mass；Described water
Dosage is the mass fraction of control material system reclaimed water 60%~65%.
5. the farmland soil heavy metals cadmium renovation agent according to any one of Claims 1 to 4, it is characterised in that：Described stone
Ash, vermiculite, the granularity of hydrotalcite and decomposed rape cake cross 40 mesh sieves.
6. the application method of the farmland soil heavy metals cadmium renovation agent described in any one of Claims 1 to 5, it is characterised in that：Bag
Include following steps：Apply farmland soil heavy metals cadmium renovation agent into Cd-polluted farmland, be mixed with water, balance 5~7 days,
Planting plants can be carried out.
7. the application method of farmland soil heavy metals cadmium renovation agent according to claim 6, it is characterised in that：Every mu of cadmium dirt
Contaminate and apply 250~500 kilograms of farmland soil heavy metals cadmium renovation agent in farmland.
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| CN201710774021.2A CN107459428A (en) | 2017-08-31 | 2017-08-31 | A kind of farmland soil heavy metals cadmium renovation agent and its application method |
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| CN201710774021.2A CN107459428A (en) | 2017-08-31 | 2017-08-31 | A kind of farmland soil heavy metals cadmium renovation agent and its application method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113105294A (en) * | 2021-02-22 | 2021-07-13 | 浙江奇彩环境科技股份有限公司 | Soil remediation agent for acid cadmium-polluted farmland and preparation method and use method thereof |
| CN114350374A (en) * | 2022-01-05 | 2022-04-15 | 中国农业大学 | Heavy metal contaminated soil conditioner and application thereof |
| CN116655439A (en) * | 2023-06-15 | 2023-08-29 | 湖南工学院 | Soil conditioner capable of preventing crop roots from absorbing cadmium and preparation method thereof |
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| CN102653680A (en) * | 2011-03-02 | 2012-09-05 | 河南蓝波世科技有限公司 | Heavy metal treating agent for soil |
| CN105273721A (en) * | 2015-05-12 | 2016-01-27 | 上海建为环保科技股份有限公司 | Heavy metal cadmium farmland repairing agent |
| CN105567249A (en) * | 2016-02-29 | 2016-05-11 | 山西民基生态环境工程股份有限公司 | Chemical repairing agent for farmland soil Cd pollution |
| CN106866305A (en) * | 2017-02-28 | 2017-06-20 | 湖南省中科农业有限公司 | A kind of ecological activation conditioner of heavy-metal contaminated soil and preparation method thereof |
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2017
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102653680A (en) * | 2011-03-02 | 2012-09-05 | 河南蓝波世科技有限公司 | Heavy metal treating agent for soil |
| CN105273721A (en) * | 2015-05-12 | 2016-01-27 | 上海建为环保科技股份有限公司 | Heavy metal cadmium farmland repairing agent |
| CN105567249A (en) * | 2016-02-29 | 2016-05-11 | 山西民基生态环境工程股份有限公司 | Chemical repairing agent for farmland soil Cd pollution |
| CN106866305A (en) * | 2017-02-28 | 2017-06-20 | 湖南省中科农业有限公司 | A kind of ecological activation conditioner of heavy-metal contaminated soil and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113105294A (en) * | 2021-02-22 | 2021-07-13 | 浙江奇彩环境科技股份有限公司 | Soil remediation agent for acid cadmium-polluted farmland and preparation method and use method thereof |
| CN114350374A (en) * | 2022-01-05 | 2022-04-15 | 中国农业大学 | Heavy metal contaminated soil conditioner and application thereof |
| CN116655439A (en) * | 2023-06-15 | 2023-08-29 | 湖南工学院 | Soil conditioner capable of preventing crop roots from absorbing cadmium and preparation method thereof |
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