CN106367073A - Acidic soil conditioner with straw as raw material, preparation method and application thereof - Google Patents
Acidic soil conditioner with straw as raw material, preparation method and application thereof Download PDFInfo
- Publication number
- CN106367073A CN106367073A CN201610725766.5A CN201610725766A CN106367073A CN 106367073 A CN106367073 A CN 106367073A CN 201610725766 A CN201610725766 A CN 201610725766A CN 106367073 A CN106367073 A CN 106367073A
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- straw
- soil conditioner
- soil
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- attapulgite
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/40—Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2101/00—Agricultural use
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2109/00—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE pH regulation
Abstract
The invention relates to an acidic soil conditioner with straw as a raw material, a preparation method and an application thereof. The preparation method includes the steps of: mixing straw powder with attapulgite, adding the mixture to an alkali liquid and heating the liquid for a certain time, performing solid-liquid separation and drying the solid; and adding hydrochloric acid to the liquid to precipitate lignin, performing solid-liquid separation and drying the solid; and uniformly mixing the two solids with a calcium magnesium phosphate fertilizer and ironmaking slag according to ratio to obtain the acidic soil conditioner. The acidic soil conditioner is alkaline and has high content of organic substances, is high in specific surface area and adsorption property, contains various nutrients required by crops, can be used for regulating the pH of soil and adsorbing and passivating heavy metal and increasing organic substances in soil, promotes formation of aggregate structures in soil, improves permeability of soil, promotes growth of plants and is reduced in risk of soil caking when being applied.
Description
Technical field
The present invention relates to agricultural environment child care and recovery technique field are and in particular to a kind of acid soil with straw as raw material
Earth conditioner and preparation method and application.
Background technology
Crop in China straw annual production about 700,000,000 t about, first of the row world.Much there are substantial amounts of straw in area in the whole nation
Stalk surpluses can be used.Except papermaking, make feedstuff or feedstuff, make fertile also field etc., having a large amount of straws straight every year
Connect burning, pollution wastes again.Forbid the enforcement of open incineration straw policy with country, a large amount of straws are urgently processed, should be energetically
Develop new technological means, recycling straw.
At this stage China by the straw in the also field of multi-form more than 100,000,000 tons, mainly straw mulching and returning, powder of straw
Broken also field, straw compost also field and straw cross abdomen also field, and wherein, first two also field mode belongs to direct returning to farmland, but direct returning to farmland
Easily cause crop disease and insect, and speed of becoming thoroughly decomposed is slow；Latter two also field mode belongs to indirectly also field, but processing speed is slow, difficult
To process a large amount of straws at short notice for also field.Currently, domestic have chemically after pretreated straw, for biological second
The production of alcohol, but it is unable to large-scale promotion because cost is higher than grain alcohol.
It is filled with hemicellulose and the lignin with tridimensional network between the crystal formation framework of plant cellulose
Macromole, they hamper the degraded to cellulose for the microorganism species in being wrapped in cellulose.Can by pretreatment one side
To break the constraint to cellulose of lignin and hemicellulose, the crystallization of cellulose macromolecule itself on the other hand can be reduced
Degree, improves the accessibility to cellulosic substrate for the cellulose degradation enzyme system.After diluted alkaline high-temperature process straw, straw structure is changed
Become, easily become thoroughly decomposed, no harmful organism, in high alkalinity, and processing cost is low, processing speed is fast, environment friendly and pollution-free, with other materials
Combination, can be used as a kind of good soil conditioner.
Content of the invention
For realizing the comprehensive utilization of agricultural wastes straw, solve existing soil conditioner and be difficult to widely use problem, this
Invention provides a kind of acidic soil conditioner with straw as raw material and preparation method thereof, realizes environmental protection, pollution-free, at low cost
Improve soil property.
The present invention is realized by following technical proposal:
A kind of preparation method of the acidic soil conditioner with straw as raw material, comprises the following steps:
1) powder of straw and attapulgite are added in alkali liquor after 20～80:5～40 mix by weight proportion, heat treated one
Fix time；
2) by step 1) gained mixture solid-liquid separation, by solid portion drying to water content≤30%, obtain solid product
i；Liquid portion is adjusted ph to neutrality with hydrochloric acid, and makes lignin deposit, will be dry for solid portion extremely aqueous after solid-liquid separation
Amount≤30%, obtains solid product ii (main component is lignin)；
3) by step 2) the solid product i that is obtained and solid product ii and calcium magnesium phosphate, blast furnace slag be mixed in proportion all
Even, obtain final product described acidic soil conditioner.
Preferably, described straw is the agricultural such as rice straw, wheat stalk, rape stalk, corn straw, soybean stalk
One or more of waste resource.
Preferably, described powder of straw particle diameter is 10～120 mesh.
Preferably, described powder of straw and attapulgite part by weight are 40～70:10～20.
Preferably, the ratio of the gross weight of described powder of straw and attapulgite and described alkali liquor weight is 0.1～20:100；
It is preferably 8～10:100.
Preferably, described alkali liquor is the aqueous solution of highly basic and quick lime, and wherein the mass fraction of highly basic is 0.5%～5%,
The mass fraction of quick lime is 0.1%～3%；Described highly basic is preferably one of sodium hydroxide, potassium hydroxide or two kinds.
It is further preferred that described alkali liquor is the aqueous solution of sodium hydroxide and quick lime, wherein, the quality of sodium hydroxide is divided
Number is 1.5%～2%, and the mass fraction of quick lime is 0.5%～1%.
Preferably, described heat treatment temperature is 80～121 DEG C, and process time is 5～60min；It is further preferred that institute
State heat treatment temperature and be 100 DEG C, process time is 10～50min.
Preferably, the gross weight of described solid product i and solid product ii and calcium magnesium phosphate, the part by weight of blast furnace slag
For 50～80:5～20:10～30；More preferably 60～70:10～15:20～25.
Preferably, sio in described attapulgite2Content >=55%.
Preferably, described attapulgite particle diameter≤0.08mm.
Preferably, described calcium magnesium phosphate is agriculture level, wherein p205Content >=15%.
Preferably, available silicon content >=20% in described blast furnace slag.
Present invention additionally comprises the acidic soil conditioner with straw as raw material of said method preparation.
Present invention additionally comprises the above-mentioned acidic soil conditioner with straw as raw material is especially sour in regulation acidification soil
Property paddy soils and drought soil in application.
Preferably, the ph of described acidification soil is 4.5～6.0.
Preferably, the amount of application of the above-mentioned acidic soil conditioner with straw as raw material is 100～200kg/ mu, further
It is preferably 150kg/ mu.
Soil conditioner of the present invention is in alkalescence, and organic principle is high, has high-specific surface area, high absorption property, also contains many
Plant the nutrient needed for crop, scalable soil ph, adsorb the heavy metal-passivated increase soil organism, promote soil granular knot
It is configured to, strengthens the permeability of soil, promote plant growing, reduce and apply the risk that soil conditioner causes soil compaction.
Straw in the present invention, through alkali liquor heat treated, most of lignin is separated from straw, makes straw structure
Destroyed, so that the cellulose in straw is easier by the microbial decomposition in environment.Attapulgite in the present invention is through dilute
Alkali liquor heat modification process so as to internal structure becomes loose porous, increase specific surface area, and alkali liquor in metal ion with recessed
Fe between convex rod soil layer3+、mg2+、na+And other fine particles occur ion exchange, cause attapulgite structure charge uneven
Weighing apparatus, strengthens the adsorption activity of attapulgite, greatly enhances the absorbability of its heavy metal.In addition, lignin and blast furnace slag
Heavy metal also has certain absorbability.The straw of alkali process and calcium magnesium phosphate are in all alkalescence, the also phosphorus in calcium magnesium phosphate
Acid group can precipitate the heavy metal ion such as lead, cadmium.Straw can effectively reduce plant to a huge sum of money with the effective silicon in blast furnace slag
The absorption belonging to.
The present invention can realize following beneficial effect:
(1) improve soil ph value
Alkali process straw in the present invention, calcium magnesium phosphate are alkaline matter and contain various nutrient elements, such as calcium, magnesium,
Silicon etc., can improve alkali displacement capacity, so that soil ph value raises.
(2) absorption is heavy metal-passivated
Alkaline matter in the present invention pass through basic mineral can free acid in sweetening of the soil, displace on aluminum silicate
Hydrion, and increase the absorption to cation for the soil by supplementing activated silica；Again pass through improve soil ph value promote anion with
The co-precipitation of heavy metal, reduces the biological effectiveness of heavy metal.In addition blast furnace slag and attapulgite have larger ion and hand over
Transducing power, can adsorb heavy metal such as pb, ni, as, sb, the cd etc. in soil, reduce its biological effectiveness.
(3) increase the soil organism, improve Soil structure, promote plant growing.
In the present invention, straw accounts for larger proportion, applies soil conditioner of the present invention and can significantly improve the soil organism and contains
Amount；Attapulgite and straw make topsoil soils field capacity increase under drought condition, improve the water holding capacity of soil, and its
For the material of porous, apply the aeration of soil, water penetration, nutrient preserving capability after this material preferable；In addition, containing plant in the present invention
The various nutrient elements such as required n, p, k, ca, mg, can promote plant growing.
Specific embodiment
Following examples are used for the present invention is described, but are not limited to the scope of the present invention.Unreceipted concrete in embodiment
Technology or condition person, according to the technology described by document in the art or condition, or are carried out according to product description.Used
Reagent or the unreceipted production firm person of instrument, are the conventional products being commercially available by regular distributor.
The acidic soil conditioner with straw as raw material for the embodiment 1
(1) stalk is crushed to 16 mesh, obtains powder of straw；
(2) powder of straw and attapulgite are mixed by weight 50:20 ratio；
(3) said mixture is added containing sodium hydroxide 1.5%, in the alkali liquor of quick lime 0.5%, solid-to-liquid ratio 10:100,
It is heated to seething with excitement, keep 30min；
(4) solid-liquid separation, by solid portion drying to water content≤30%；
(5) add appropriate hydrochloric acid to adjust ph to neutrality to above-mentioned liquid portion, and make lignin deposit, will after solid-liquid separation
Solid portion drying is to water content≤30%；
(6) above-mentioned dried two kinds of solid products and calcium magnesium phosphate, blast furnace slag are mixed in the ratio of 70:10:20
Uniformly, obtain final product soil conditioner.
The acidic soil conditioner with straw as raw material for the embodiment 2
(1) stalk is crushed to 16 mesh, obtains powder of straw；
(2) powder of straw and attapulgite are mixed by weight 60:20 ratio；
(3) said mixture is added containing sodium hydroxide 1.5%, in the alkali liquor of quick lime 0.5%, solid-to-liquid ratio 10:100,
It is heated to seething with excitement, keep 30min；
(4) solid-liquid separation, by solid portion drying to water content≤30%；
(5) add appropriate hydrochloric acid to adjust ph to neutrality to above-mentioned liquid portion, and make lignin deposit, will after solid-liquid separation
Solid portion drying is to water content≤30%；
(6) above-mentioned dried two kinds of solid products and calcium magnesium phosphate, blast furnace slag are mixed in the ratio of 80:10:10
Uniformly, obtain final product soil conditioner.
The acidic soil conditioner with straw as raw material for the embodiment 3
(1) stalk is crushed to 16 mesh, obtains powder of straw；
(2) powder of straw and attapulgite are mixed by weight 40:20 ratio；
(3) said mixture is added containing sodium hydroxide 1.5%, in the alkali liquor of quick lime 0.5%, solid-to-liquid ratio 10:100,
It is heated to seething with excitement, keep 35min；
(4) solid-liquid separation, by solid portion drying to water content≤30%；
(5) add appropriate hydrochloric acid to adjust ph to neutrality to above-mentioned liquid portion, and make lignin deposit, will after solid-liquid separation
Solid portion drying is to water content≤30%；
(6) above-mentioned dried two kinds of solid products and calcium magnesium phosphate, blast furnace slag are mixed in the ratio of 60:15:25
Uniformly, obtain final product soil conditioner.
The acidic soil conditioner with straw as raw material for the embodiment 4
(1) stalk is crushed to 16 mesh, obtains powder of straw；
(2) powder of straw and attapulgite are mixed by weight 70:10 ratio；
(3) said mixture is added containing sodium hydroxide 2%, in the solution of quick lime 1%, solid-to-liquid ratio 8:100, it is heated to
Boiling, keeps 35min；
(4) solid-liquid separation, by solid portion drying to water content≤30%；
(5) add appropriate hydrochloric acid to adjust ph to neutrality to above-mentioned liquid portion, and make lignin deposit, will after solid-liquid separation
Solid portion drying is to water content≤30%；
(6) above-mentioned dried two kinds of solid products and calcium magnesium phosphate, blast furnace slag are mixed all in the ratio of 80:5:15
Even, obtain final product soil conditioner.
The application effect experiment of experimental example acidic soil conditioner of the present invention
The acidic soil conditioner that Example 1,3 provides is tested.
1st, test site: Hunan Province Liuyang town head town.
2nd, test period: in June, 2015～2015 year October.
3rd, field experimental design: selection size is close, and the field that water system is independent of each other is tested.Test sets 6 process,
It is respectively as follows: (1) control treatment 1: uncontaminated rice field, do not deal with measure；；(2) control treatment 2: pollution rice field, do not deal with and arrange
Apply；(3) test process 1: pollution rice field, apply soil conditioner 50kg/ mu within first 10 days in rice transplanting；(4) test process 2:
Pollution rice field, applies soil conditioner 100kg/ mu in first 10 days in rice transplanting；(5) test process 3: pollution rice field, in Oryza sativa L.
Rice transplanting applies soil conditioner 150kg/ mu in first 10 days.(6) test process 4: pollution rice field, apply soil within first 10 days in rice transplanting
Earth conditioner 200kg/ mu.Each process presses the local normal cultivation management of Rice Cropping.After rice harves, measure rice yield, soil
The effective cadmium content of earth ph, soil, rice cadmium content.
4th, result of the test:
The acidic soil conditioner that Example 1,3 provides is tested, and result is shown in Table 1, table 2 respectively.
The improved effect to soil and Oryza sativa L. for table 1 embodiment 1 soil conditioner
The improved effect to soil and Oryza sativa L. for table 2 embodiment 3 soil conditioner
Experimental result shown in table 1, table 2, the acidic soil conditioner that the present invention provides can effectively improve
Soil ph value, reduces the cadmium content in the crop rice of effective cadmium content and results in soil simultaneously, and is effectively improved kind
The per mu yield of the crop Oryza sativa L. planted.In addition, being also known that by this experiment, with every mu of acid ground add 100～200kg this
Bright described acid conditioner is advisable；Preferably, add acidic soil conditioner described in 150kg in every mu of acid ground.
Using other embodiment preparation acidic soil conditioner carry out above-mentioned experiment with method, achieve with embodiment 1 or
The similar action effect of embodiment 3.
Although, above used general explanation, specific embodiment and test, the present invention made retouch in detail
State, but on the basis of the present invention, it can be made some modifications or improvements, this is apparent to those skilled in the art
's.Therefore, these modifications or improvements without departing from theon the basis of the spirit of the present invention, belong to claimed
Scope.
Claims (10)
1. a kind of preparation method of the acidic soil conditioner with straw as raw material is it is characterised in that comprise the following steps:
1) powder of straw and attapulgite are added in alkali liquor after 20～80:5～40 mix by weight proportion, heat treated one timing
Between；
The ratio of the gross weight of described powder of straw and attapulgite and described alkali liquor weight is 0.1～20:100；Described alkali liquor is
The aqueous solution of highly basic and quick lime, the wherein mass fraction of highly basic are 0.5%～5%, the mass fraction of quick lime is 0.1%～
3%, described highly basic is one of sodium hydroxide, potassium hydroxide or two kinds；
2) by step 1) gained mixture solid-liquid separation, by solid portion drying to water content≤30%, obtain solid product i；Will
Liquid portion hydrochloric acid adjusts ph to neutrality, and makes lignin deposit, after solid-liquid separation by solid portion drying to water content≤
30%, obtain solid product ii；
3) by step 2) be obtained solid product i and solid product ii mix in proportion with calcium magnesium phosphate, blast furnace slag, that is,
?；The gross weight of wherein said solid product i and solid product ii and calcium magnesium phosphate, the part by weight of blast furnace slag be 50～
80:5～20:10～30.
2. soil conditioner according to claim 1, it is characterised in that described heat treatment temperature is 80～121 DEG C, is located
The reason time is 5～60min；Preferably, described heat treatment temperature is 100 DEG C, and process time is 10～50min.
3. soil conditioner according to claim 1 and 2 is it is characterised in that described powder of straw and attapulgite weight ratio
Example is 40～70:10～20；The ratio of the gross weight of described powder of straw and attapulgite and described alkali liquor weight is 8～10:
100.
4. soil conditioner according to claim 1 and 2 is it is characterised in that described alkali liquor is sodium hydroxide and calculogenesis
The aqueous solution of ash, wherein, the mass fraction of sodium hydroxide is 1.5%～2%, and the mass fraction of quick lime is 0.5%～1%.
5. soil conditioner according to claim 1 and 2 is it is characterised in that described solid product i and solid product ii
Gross weight is 60～70:10～15:20～25 with the part by weight of calcium magnesium phosphate, blast furnace slag.
6. soil conditioner according to claim 1 and 2 is it is characterised in that sio in described attapulgite2Content >=
55%；And/or, described calcium magnesium phosphate is agriculture level, wherein p205Content >=15%；And/or, in described blast furnace slag effectively
Silicone content >=20%.
7. soil conditioner according to claim 1 and 2 is it is characterised in that described powder of straw particle diameter is 10～120 mesh；
And/or, described attapulgite particle diameter≤0.08mm.
8. the soil conditioner that any one of claim 1～7 methods described is obtained.
9. application in adjusting acidification soil for the soil conditioner described in claim 8；Preferably, described acidification soil
Ph is 4.5～6.0.
10. application according to claim 9 is it is characterised in that the amount of application of described soil conditioner is 100～200kg/
Mu, preferably 150kg/ mu.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610725766.5A CN106367073B (en) | 2016-08-25 | 2016-08-25 | It is a kind of using stalk as acidic soil conditioner of raw material and the preparation method and application thereof |
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| CN201610725766.5A CN106367073B (en) | 2016-08-25 | 2016-08-25 | It is a kind of using stalk as acidic soil conditioner of raw material and the preparation method and application thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107057713A (en) * | 2017-04-14 | 2017-08-18 | 安徽省明美矿物化工有限公司 | A kind of concave convex rod soil conditioner and preparation method |
| CN107815318A (en) * | 2017-11-08 | 2018-03-20 | 煜环环境科技有限公司 | A kind of passivator preparation method for heavy metals in farmland pollution control |
| CN108586128A (en) * | 2018-05-03 | 2018-09-28 | 新疆泰谷生物肥料有限公司 | A kind of preparation method of slowly releasing trace element fertilizer |
| CN108690628A (en) * | 2018-05-18 | 2018-10-23 | 湖南泰谷生态工程有限公司 | A kind of acidic soil conditioner and the preparation method and application thereof |
| CN108817069A (en) * | 2018-06-01 | 2018-11-16 | 湖南泰谷生态工程有限公司 | A kind of heavy metallic activation agent and its application in soil joint is repaired |
| CN109704886A (en) * | 2019-03-12 | 2019-05-03 | 湖南泰谷生态工程有限公司 | Straw manures and preparation method thereof |
| CN109721432A (en) * | 2019-03-12 | 2019-05-07 | 湖南泰谷生态工程有限公司 | A kind of alkalescent fertilizer and the preparation method and application thereof |
| CN110016351A (en) * | 2019-05-06 | 2019-07-16 | 湖南泰谷生态工程有限公司 | The preparation method and applications of cadmium arsenic combined pollution renovation agent based on natural macromolecular organic matter |
| CN111303886A (en) * | 2020-03-24 | 2020-06-19 | 圣清环保股份有限公司 | Soil conditioner preparation system and method |
| CN113045365A (en) * | 2021-04-23 | 2021-06-29 | 湖北富邦科技股份有限公司 | Soil conditioner and preparation method thereof |
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| CN104479683A (en) * | 2014-12-15 | 2015-04-01 | 湖南省土壤肥料研究所 | Soil conditioner capable of being used for soil acidification conditioning and cadmium pollution repair and preparation method thereof |
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- 2016-08-25 CN CN201610725766.5A patent/CN106367073B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104479683A (en) * | 2014-12-15 | 2015-04-01 | 湖南省土壤肥料研究所 | Soil conditioner capable of being used for soil acidification conditioning and cadmium pollution repair and preparation method thereof |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107057713A (en) * | 2017-04-14 | 2017-08-18 | 安徽省明美矿物化工有限公司 | A kind of concave convex rod soil conditioner and preparation method |
| CN107815318A (en) * | 2017-11-08 | 2018-03-20 | 煜环环境科技有限公司 | A kind of passivator preparation method for heavy metals in farmland pollution control |
| CN108586128A (en) * | 2018-05-03 | 2018-09-28 | 新疆泰谷生物肥料有限公司 | A kind of preparation method of slowly releasing trace element fertilizer |
| CN108586128B (en) * | 2018-05-03 | 2021-08-24 | 湖南重金属污染耕地安全高效利用工程研究中心有限公司 | Preparation method of slow-release trace element fertilizer |
| CN108690628A (en) * | 2018-05-18 | 2018-10-23 | 湖南泰谷生态工程有限公司 | A kind of acidic soil conditioner and the preparation method and application thereof |
| CN108817069A (en) * | 2018-06-01 | 2018-11-16 | 湖南泰谷生态工程有限公司 | A kind of heavy metallic activation agent and its application in soil joint is repaired |
| CN109704886A (en) * | 2019-03-12 | 2019-05-03 | 湖南泰谷生态工程有限公司 | Straw manures and preparation method thereof |
| CN109721432A (en) * | 2019-03-12 | 2019-05-07 | 湖南泰谷生态工程有限公司 | A kind of alkalescent fertilizer and the preparation method and application thereof |
| CN110016351A (en) * | 2019-05-06 | 2019-07-16 | 湖南泰谷生态工程有限公司 | The preparation method and applications of cadmium arsenic combined pollution renovation agent based on natural macromolecular organic matter |
| CN110016351B (en) * | 2019-05-06 | 2021-03-16 | 湖南泰谷生态工程有限公司 | Preparation method and application of cadmium-arsenic composite pollution repairing agent based on natural macromolecular organic matter |
| CN111303886A (en) * | 2020-03-24 | 2020-06-19 | 圣清环保股份有限公司 | Soil conditioner preparation system and method |
| CN113045365A (en) * | 2021-04-23 | 2021-06-29 | 湖北富邦科技股份有限公司 | Soil conditioner and preparation method thereof |
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|---|---|
| CN106367073B (en) | 2019-03-26 |
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