CN108781682A - A kind of planting new method of enriched in metals cadmium - Google Patents
A kind of planting new method of enriched in metals cadmium Download PDFInfo
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- CN108781682A CN108781682A CN201810511946.2A CN201810511946A CN108781682A CN 108781682 A CN108781682 A CN 108781682A CN 201810511946 A CN201810511946 A CN 201810511946A CN 108781682 A CN108781682 A CN 108781682A
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- 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
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C21/00—Methods of fertilising, sowing or planting
- A01C21/005—Following a specific plan, e.g. pattern
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- 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
- A01G18/00—Cultivation of mushrooms
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- 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
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- 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
- A01G24/13—Zeolites
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- 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
- A01G24/30—Growth substrates; Culture media; Apparatus or methods therefor based on or containing synthetic organic compounds
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Soil Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Botany (AREA)
- Mycology (AREA)
- Fertilizers (AREA)
Abstract
The invention belongs to contaminated soil Treatment process fields, and in particular to a kind of planting new method of enriched in metals cadmium.For in the prior art, during enriching heavy metal cadmium crop-planting, grower is difficult the materials that the various plants enriched cadmium metals of promotion are applied to field enough in time, and the present invention produces novel metal cadmium pregnant solution by compounding nano material and metal richness cadmium collection material and part nutrient；The cadmium metal pregnant solution is by modified Nano soil material, zeolite powder, inorganic nutrients and organic matter according to weight ratio 60~90:20~40：15~45：15~35 are stirred to obtain；The modified Nano soil material is the nanometer soil material for including inorganic nutritive element, ethylenediamine tetra-acetic acid and small molecular organic acid by pillared modification.
Description
Technical field
The invention belongs to contaminated soil Treatment process fields, and in particular to a kind of planting of enriched in metals cadmium is newly square
Method.
Background technology
China's regional agriculture environmental degradation is extremely serious by heavy metal pollution phenomenon with agricultural product, especially in some economy
Developed regions.Therefore, heavy metal pollution is administered to have very important significance.What is stood in the breach is exactly metal cadmium pollution, quilt
United Nations Environment Programme is classified as global meaning and endangers first of chemical substance.The poison rice of emergence, malicious wheat, malicious vegetables
Event shows the necessity and urgency that heavy metals in farmland cadmium pollution is administered.
It cultivates and the crop of plantation low absorption heavy metal cadmium, research resistance cadmium material and change implantation methods can effectively reduce work
Heavy metal cadmium content in object is to reduce effective way one of of the heavy metal cadmium by food chain harm to the human body, but cannot be from
The heavy metal cadmium in soil is fundamentally broken off relations, when not using resistance cadmium material or low absorption crop, and can enter and plant
In object, human health is endangered.And be enriched with by plant absorption, the heavy metals such as cadmium " are taken out " from soil, then are removals
The important method of heavy metal in soil pollution.
Currently, the Juncao two of national Juncao Engineering Technical Research Centre research, Yunnan academy of agricultural sciences and Chengdu Zheng Guang groups
The castor-oil plant kind cultivated, as the plant of enriching heavy metal, mu biomass can reach 2-5 tons, in medium pollution item
The ability of the cadmium of enriching heavy metal has reached 2mg/ plants under part.How the enrichment to soil heavy metal cadmium of plant is further promoted
Efficiency promotes transhipment of the heavy metal cadmium from plant root to aboveground vegetation part, significantly promotes enriching heavy metal cadmium plant
Biomass is the emphasis of novel metal cadmium pregnant solution research.
Currently, it is many with activation heavy metal, the material for promoting heavy metal to be shifted from root to overground part and research,
But the ability of plant absorption heavy metal is dynamic change, for example, in seedling stage, plant is mainly the growth of root system, there is hair
The root area of the root system reached, plant absorption heavy metal just understands bigger, could secrete the organic acids of more activation heavy metals；Greatly
Quantifier elimination and it was verified that the ethylenediamine tetra-acetic acid etc. manually added, the ability with very strong activating soil heavy metal, and
And be conducive to heavy metal and shifted from root to overground part, still, studies have shown that ethylenediamine tetra-acetic acid is being added to 20-30ppm
When, i.e., obviously inhibit the growth of plant seedling stage, still, to allow grower to grasp the exact moment used and accurately dosage is not
Reality, especially under the background of lack of labor, people are more desirable to do not changing fertilising custom, do not needing professional training
Under the conditions of, you can it is effective to reduce heavy metal-polluted soil and obtain higher economic well-being of workers and staff.
Invention content
For in the prior art, during the planting of enriching heavy metal, grower is difficult promptly and accurately enough
Using enrichment material, the present invention provides a kind of planting new method of enriched in metals cadmium, its object is to：Grower is set not change
Become fertilising custom, do not need professional training, you can plantation absorbs the plant of cadmium metal in soil, to be conducive to Technique Popularizing simultaneously
Obtain better economic well-being of workers and staff.
The technical solution adopted by the present invention is as follows：
A kind of planting new method of enriched in metals cadmium is sowed, the base fertilizer packet again after applying base fertilizer to soil
Include cadmium metal pregnant solution；
The cadmium metal pregnant solution is by modified Nano soil material, zeolite powder, inorganic nutrients and organic matter according to weight ratio
60~90:20~40：15~45：15~35 are stirred to obtain；The modified Nano soil material is by pillared modification packet
Nanometer soil material containing inorganic nutritive element, ethylenediamine tetra-acetic acid and small molecular organic acid.
After the technical solution, cadmium metal pregnant solution is applied in soil by grower in such a way that tradition applies fertilizer to the subsoil
In.Cadmium metal pregnant solution, using nano-intercalation technology, the nanoscale by natural nano soil material laminated silicate interlayer is anti-
It answers, adjusts technological parameter, so that target substance is entered between silicate layer and adsorbed, wrapped up；Using zeolite etc., other are slow simultaneously
Being used in compounding for material and organic matter inorganic nutrients is released, compound slow-releasing system is formed, the target substance of release is made to be given birth to plant
Long curve matches.Including following several stages：1) in the 10-25 days times after plant seeding, cadmium metal pregnant solution is first
First release is conducive to substance, such as molybdenum, phosphorus, zinc of root system of plant and growth of seedling etc., promotes the tachyauxesis of root system of plant.Root
After being powerful, plant enhances the absorbability and absorption region of the heavy metal element in soil, and powerful root system
It is also the increased guarantee of plant biomass.2) after plant enters the period of vigorous growth, cadmium metal pregnant solution sustained release
With the element, such as magnesium, calcium etc. in heavy metal competition adsorption by soil site, these elements promote the heavy metal on soil colloid particle
Desorption；At the same time, ethylenediamine tetra-acetic acid and small molecular organic acid such as citric acid, tartaric acid etc., these organic matter energy are discharged
Enough promote heavy metallic activation, by complexing, be conducive to heavy metal and absorbed by root system of plant, to be shifted to overground part.3)
The nutrient compounded in cadmium metal pregnant solution persistently promotes the growth of plant biomass, especially promotes the shape of cellulose
At；Hydrogen bond is formed between-the OH and heavy metal ion of cellulose glucose unit, by depositing and separating, weight can be reduced
Metal grows plant reproductive the injury of organ, to eliminate absorb heavy metal after plant the influence that is subject to of growth.To sum up institute
It states, the advantages of this programme is that grower does not change fertilising custom, do not need professional training, you can plantation absorbs heavy metal-polluted soil
Plant；Also, after applying cadmium metal pregnant solution, absorbability of the plant to heavy metals in soil can be improved.
Preferably, the amount of application of cadmium metal pregnant solution is 30-50 kgs/acre.The amount of application disclosure satisfy that the growth of plant
With significantly improve absorbability of the plant to heavy metal.
Preferably, behind one month sowed, foliar fertilizer is sprayed in the plant surface of plantation.It sprays containing can promote
The happy standing grain liquid of positive light of plant growth trace element such as selenium, zinc etc. can further promote content of cellulose, the induction of target plant
The metallothionein for mitigating Heavy Metal Pollution is formed, and the content of the antioxidases such as plant chlorophyll and glutathione is promoted.In this way,
A small amount of heavy metal for entering plant growth vitals, toxicity and injury are further weakened and are mitigated, to ensure plant
Normal growth.
Preferably, the type of the plant of sowing is castor-oil plant or Juncao.Castor-oil plant and Juncao are rich cellulose-containing plants, thus
Ability with high enrichment, high heavy metal tolerance.In addition, these crops are all industrial crops, can be used for processing fiber product or
Particle is made to burn.Therefore, the preferred embodiment is while carrying out soil remediation, additionally it is possible to generate considerable economic effect
Benefit.
Preferably, nanometer soil material is one kind or more in sodium bentonite, calcium-base bentonite, sepiolite or palygorskite
Kind.These materials are layered silicate structure, by pillared modification, can receive a large amount of inorganic and organic nutrient substance.
Preferably, the inorganic nutritive element that modified Nano soil material includes is molybdenum, phosphorus, zinc, magnesium, calcium and nitrogen.Molybdenum, phosphorus and
Zinc can diffuse out at plant growth initial stage, be conducive to the growth of root system of plant；Magnesium and calcium in growing process in addition to
It is absorbed as nutrient, additionally it is possible to promote the heavy metal desorption on soil colloid particle, to enhance plant to a huge sum of money
The absorption of category.
Preferably, small molecular organic acid is one or more in citric acid, vitamin C and tartaric acid.These small molecules
Organic acid can activate heavy metal, absorption of the enhancing plant to heavy metal with complex.
Preferably, inorganic nutrients include three kinds of nitrogen, phosphorus and potassium elements.
The present invention also provides the preparation methods of above-mentioned cadmium metal pregnant solution, include the following steps：
[1] natural nano soil material is dried, is pulverized and sieved, add water that slurry is made；
[2] in the slurry obtained to step [1] be added ammonium hydroxide adjust pH, then be added ethylenediamine tetra-acetic acid and containing magnesium it is inorganic
The aqueous solution of salt, is stirred；
[3] step [2] treated slurry heating will be passed through, inorganic acid for adjusting pH is added, be added small molecular organic acid and
The aqueous solution of inorganic salts containing molybdenum and zinc, is stirred；
[4] to by step, [3] treated that pillared dedicated treating liquid is added in slurry is stirred in a heated condition,
Pillared reaction is carried out, then filters, is dry, crushing to get modified Nano soil material；
[5] the modified Nano soil material that zeolite powder, inorganic nutrients, organic matter and step [4] obtain is stirred, is obtained
To cadmium metal pregnant solution.
Preferably, solid and liquid weight ratio is 1 in slurry described in step [1]:3.5~6.
Preferably, natural nano soil material parts by weight are 120~200 parts in step [1], second two described in step [2]
The aqueous solution of amine tetraacethyl and the inorganic salts containing magnesium is grouped as by the group of following parts by weight：5~10 parts of ethylenediamine tetra-acetic acid, magnesium sulfate
3~6 parts, 50~70 parts of water.
Preferably, natural nano soil material parts by weight are 120~200 parts in step [1], small point described in step [3]
The aqueous solution of sub- organic acid and inorganic salts containing molybdenum and zinc is grouped as by the group of following parts by weight：3~5 parts of citric acid, dimension life
1.5~3 parts of plain C, 0.3~0.6 part of ammonium molybdate, 2~3 parts of zinc sulfate, 45~60 parts of water.
Preferably, natural nano soil material parts by weight are 120~200 parts in step [1], pillared described in step [4]
Dedicated treating liquid is prepared by following methods：By weight, 10 parts of fluorapatite and 15~20 parts of ardealites are added 80
In~100 parts of water, stir evenly；The phosphoric acid of the sulfuric acid and 8~10 parts of 85wt% of 15~20 parts of 93wt% is added, heating is anti-
It answers；Then 15~30 parts of ammonium hydroxide are added, stir and evenly mix.
In conclusion by adopting the above-described technical solution, the beneficial effects of the invention are as follows：
1. grower applies cadmium metal pregnant solution in the soil in such a way that tradition applies fertilizer to the subsoil, does not change fertilising and practise
It is used to, do not need professional training, you can plantation absorbs the plant of heavy metal-polluted soil, is conducive to the Technique Popularizing.
2. cadmium metal pregnant solution forms compound slow-releasing system, make the target substance of release, with plant growth to material
Demand curve matches.To promote plant to form powerful root system and enhance the biomass of plant, to promote plant pair
The absorbability of heavy metal.
3. cadmium metal pregnant solution forms compound slow-releasing system, make the target substance of release, with " plant absorption " to material
Demand curve match.By plant growth vigorous period largely discharge ethylenediamine tetra-acetic acid and small molecular organic acid and
The calcium and magnesium of the heavy metal ion in soil, absorbability of the enhancing plant to heavy metal can be replaced.
4. the gold of the content of cellulose of target plant, induction mitigation Heavy Metal Pollution can further be promoted by spraying foliar fertilizer
Belong to sulfoprotein to be formed, promotes the content of the antioxidases such as plant chlorophyll and glutathione.In this way, entering plant growth weight on a small quantity
The heavy metal of organ is wanted, toxicity and injury are further weakened and mitigated, to ensure plant normal growth.
5. castor-oil plant and Juncao are rich cellulose-containing plants, thus the ability with high enrichment, high heavy metal tolerance.This
Outside, these crops are all industrial crops, can be used for processing fiber product or particle being made and burn.Therefore, the preferred embodiment
While carrying out soil remediation, additionally it is possible to generate considerable economic benefit.
6. nanometer soil material is layered silicate structure, by pillared modification, can receive a large amount of inorganic and organic
Nutriment.
7. molybdenum, phosphorus and zinc can diffuse out at plant growth initial stage, be conducive to the growth of root system of plant；
8. magnesium and calcium are in growing process in addition to being absorbed as nutrient, additionally it is possible to promote soil colloid particle
On heavy metal desorption, to enhance absorption of the plant to heavy metal.
9. ethylenediamine tetra-acetic acid and small molecular organic acid can be with complexes to activate heavy metal, enhancing is planted
Absorption of the object to heavy metal.
Specific implementation mode
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
A kind of planting new method of enriched in metals cadmium is sowed, the base fertilizer packet again after applying base fertilizer to soil
Include cadmium metal pregnant solution；
The cadmium metal pregnant solution is by modified Nano soil material, zeolite powder, inorganic nutrients and organic matter according to weight ratio
60~90:20~40：15~45：15~35 are stirred to obtain；The modified Nano soil material is by pillared modification packet
Nanometer soil material containing inorganic nutritive element, ethylenediamine tetra-acetic acid and small molecular organic acid.
Preferably, the amount of application of cadmium metal pregnant solution is 30-50 kgs/acre.
Preferably, behind one month sowed, foliar fertilizer is sprayed in the plant surface of plantation.
Preferably, the type of the plant of sowing is castor-oil plant or Juncao.
Preferably, nanometer soil material is one kind or more in sodium bentonite, calcium-base bentonite, sepiolite or palygorskite
Kind.
Preferably, the inorganic nutritive element that modified Nano soil material includes is molybdenum, phosphorus, zinc, magnesium, calcium and nitrogen.
Preferably, small molecular organic acid is one or more in citric acid, vitamin C and tartaric acid.
Preferably, inorganic nutrients include three kinds of nitrogen, phosphorus and potassium elements.It is further preferred that the parts by weight group of inorganic nutrients
As 5~20 parts of potassium chloride, 5~30 parts of urea, 5~10 parts of double superhosphate.
The present invention also provides the preparation methods of above-mentioned cadmium metal pregnant solution, include the following steps：
[1] 120~200 parts by weight natural nano soil materials are dried, crushed 220 mesh sieve, adds water that slurry is made；
[2] ammonium hydroxide that 10~30 parts by weight are added in the slurry obtained to step [1] adjusts pH to 8.0~9.0, so
The aqueous solution of ethylenediamine tetra-acetic acid and the inorganic salts containing magnesium is added afterwards, is stirred 50~60min；
[3] step [2] will be passed through treated that slurry is heated to 45~55 DEG C, be added inorganic acid for adjusting pH to 6.1~
6.4, it is stirred 15~30min, the aqueous solution of small molecular organic acid and the inorganic salts containing molybdenum and zinc is added, is stirred 50
~60min；In the step, inorganic acid is preferably at least one of sulfuric acid or phosphoric acid.
[4] to by step, [3] treated that pillared dedicated treating liquid, under the conditions of 70~80 DEG C, solution is added in slurry
Under pH values 5.4~5.8, it is stirred 2~3h, carries out pillared reaction, then filters, is dry, crushing to get modified Nano soil
Material；
[5] the modified Nano soil material that zeolite powder, inorganic nutrients, organic matter and step [4] obtain is stirred, is obtained
To cadmium metal pregnant solution.
Preferably, solid and liquid weight ratio is 1 in slurry described in step [1]:3.5~6.
Preferably, natural nano soil material parts by weight are 120~200 parts in step [1], second two described in step [2]
The aqueous solution of amine tetraacethyl and the inorganic salts containing magnesium is grouped as by the group of following parts by weight：5~10 parts of ethylenediamine tetra-acetic acid, magnesium sulfate
3~6 parts, 50~70 parts of water.
Preferably, natural nano soil material parts by weight are 120~200 parts in step [1], small point described in step [3]
The aqueous solution of sub- organic acid and inorganic salts containing molybdenum and zinc is grouped as by the group of following parts by weight：3~5 parts of citric acid, dimension life
1.5~3 parts of plain C, 0.3~0.6 part of ammonium molybdate, 2~3 parts of zinc sulfate, 45~60 parts of water.
Preferably, natural nano soil material parts by weight are 120~200 parts in step [1], pillared described in step [4]
Dedicated treating liquid is prepared by following methods：By weight, 10 parts of fluorapatite and 15~20 parts of ardealites are added 80
In~100 parts of water, stir evenly；The phosphoric acid of the sulfuric acid and 8~10 parts of 85wt% of 15~20 parts of 93wt% is added, in 90~
1h is reacted at 100 DEG C；Then 15~30 parts of ammonium hydroxide are added, wait for that reaction temperature drops to 65~75 DEG C, pH value rises to 5.0~
5.4, it stirs and evenly mixs.
Specifically, a kind of preferred cadmium metal pregnant solution comprises the following components in parts by weight：
The raw material of following parts by weight has been used in the production process of above-mentioned 60~90 parts of modified Nano soil materials：
Embodiment 1
Cadmium metal pregnant solution concrete component used is as follows in the present embodiment：
The raw material of following parts by weight has been used in the production process of above-mentioned 60~90 parts of modified Nano soil materials：
The effect administered in heavy metal pollution of soil in planting is applied to survey above-mentioned cadmium metal pregnant solution below
Examination.The plant variety of test is Juncao 2.Experiment sets the Juncao (A) for not applying cadmium metal pregnant solution in plantation and is applied in plantation
Two groups of Juncao (B) for adding cadmium metal pregnant solution, in addition to whether using cadmium metal pregnant solution, the planting conditions of A groups and B group Juncaos complete
It is exactly the same.
This experiment in June 9 plant seedling, early period drought and water shortage, seedling-slowing stage reach one and a half months, only more than four months in effective growth period,
Midway does not cut blueness, and it is respectively 4884.03 kilograms of fresh weight, 5000.56 kilograms of fresh weight that Juncao per mu yield, which handles A and processing B,.
After the completion of plantation, test Juncao measures mu gross absorption and per mu yield to the absorption efficiency of heavy metal, as a result as follows：
From above-mentioned experiment it is found that after using cadmium metal pregnant solution, absorbability of the Juncao to cadmium can be effectively improved.
Embodiment 2
Cadmium metal pregnant solution concrete component used is as follows in the present embodiment：
The raw material of following parts by weight has been used in the production process of above-mentioned 60~90 parts of modified Nano soil materials：
The effect administered in heavy metal pollution of soil in planting is applied to survey above-mentioned cadmium metal pregnant solution below
Examination.The plant of test is castor-oil plant.Experiment sets the castor-oil plant (A) for not applying cadmium metal pregnant solution in plantation and applies cadmium metal in plantation
Two groups of the castor-oil plant (B) of pregnant solution, in addition to whether using cadmium metal pregnant solution, A groups identical with the planting conditions of B group castor-oil plants.
This experiment is sowed at the beginning of 4 months 2017, harvests complete stool in November, 2017, and midway does not cut blueness, the processing of castor-oil plant per mu yield
A and processing B is respectively 1447.51 kilograms (dry weights), 1646.43 kilograms (dry weights).
After the completion of plantation, test castor-oil plant measures mu gross absorption and per mu yield to the absorption efficiency of heavy metal, as a result as follows：
From above-mentioned experiment it is found that after using cadmium metal pregnant solution, castor-oil plant yield and the absorption energy to cadmium can be effectively improved
Power.
Embodiment 3
Cadmium metal pregnant solution concrete component used is as follows in the present embodiment：
The raw material of following parts by weight has been used in the production process of above-mentioned 60~90 parts of modified Nano soil materials：
The effect administered in heavy metal pollution of soil in planting is applied to test above-mentioned cadmium metal pregnant solution.It surveys
The plant variety of examination is ramie.Experiment sets the ramie (A) for not applying cadmium metal pregnant solution in plantation and applies cadmium metal in plantation
Two groups of the ramie (B) of pregnant solution, in addition to whether using cadmium metal pregnant solution, A groups identical with the planting conditions of B group ramies.
This experiment is sowed at the beginning of 3 months 2017, harvests head fiber crops, two fiber crops of harvesting mid-August in June, 2017, and late October adopts
Receive three fiber crops, amount to harvesting three times (aerial part), per mu yield total amount processing A and processing B be respectively 135.76 kilograms (dry weights),
Kilogram 152.13 (dry weight).
After the completion of plantation, test castor-oil plant measures mu gross absorption and per mu yield to the absorption efficiency of heavy metal, as a result as follows：
From above-mentioned experiment it is found that after using cadmium metal pregnant solution, Juncao can be effectively improved to cadmium, lead, chromium, arsenic and mercury
Absorbability.
The specific implementation mode of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
Cannot the limitation to the application protection domain therefore be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, under the premise of not departing from technical scheme design, various modifications and improvements can be made, these belong to this
The protection domain of application.
Claims (8)
1. a kind of planting new method of enriched in metals cadmium, it is characterised in that：It is sowed again after applying base fertilizer to soil, institute
It includes cadmium metal pregnant solution to state base fertilizer；
The cadmium metal pregnant solution by modified Nano soil material, zeolite powder, inorganic nutrients and organic matter according to weight ratio 60~
90:20~40：15~45：15~35 are stirred to obtain；The modified Nano soil material is to include by pillared modification
The nanometer soil material of inorganic nutritive element, ethylenediamine tetra-acetic acid and small molecular organic acid.
2. a kind of planting new method of enriched in metals cadmium described in accordance with the claim 1, it is characterised in that：The cadmium metal
The amount of application of pregnant solution is 30-50 kgs/acre.
3. a kind of planting new method of enriched in metals cadmium described in accordance with the claim 1, it is characterised in that：It is being sowed
One month after, spray foliar fertilizer in the plant surface of plantation.
4. a kind of planting new method of enriched in metals cadmium described in accordance with the claim 1, it is characterised in that：The plant of sowing
Type be castor-oil plant or Juncao.
5. a kind of cadmium metal pregnant solution described in accordance with the claim 1, it is characterised in that：The nanometer soil material is that sodium base is swollen
Moisten one or more in soil, calcium-base bentonite, sepiolite or palygorskite.
6. a kind of cadmium metal pregnant solution described in accordance with the claim 1, it is characterised in that：The modified Nano soil material includes
Inorganic nutritive element be molybdenum, phosphorus, zinc, magnesium, calcium and nitrogen.
7. a kind of cadmium metal pregnant solution described in accordance with the claim 1, it is characterised in that：The small molecular organic acid is lemon
It is one or more in acid, vitamin C and tartaric acid.
8. a kind of cadmium metal pregnant solution described in accordance with the claim 1, it is characterised in that：The inorganic nutrients include nitrogen, phosphorus and
Three kinds of elements of potassium.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111410237A (en) * | 2020-05-09 | 2020-07-14 | 中南林业科技大学 | Resource utilization method for waste polluted biomass |
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Application publication date: 20181113 |