CN112645757A - Fertilizer suitable for soil remediation and preparation method thereof - Google Patents
Fertilizer suitable for soil remediation and preparation method thereof Download PDFInfo
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- CN112645757A CN112645757A CN202011602548.5A CN202011602548A CN112645757A CN 112645757 A CN112645757 A CN 112645757A CN 202011602548 A CN202011602548 A CN 202011602548A CN 112645757 A CN112645757 A CN 112645757A
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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
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B13/00—Fertilisers produced by pyrogenic processes from phosphatic materials
- C05B13/02—Fertilisers produced by pyrogenic processes from phosphatic materials from rock phosphates
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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
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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
- C05G5/00—Fertilisers characterised by their form
- C05G5/10—Solid or semi-solid fertilisers, e.g. powders
- C05G5/12—Granules or flakes
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Abstract
The invention discloses a fertilizer suitable for soil remediation and a preparation method thereof, and belongs to the technical field of fertilizers. The fertilizer comprises the following raw materials in parts by weight: the fertilizer comprises the following components of hydrilla verticillata, calcium magnesium phosphate fertilizer, bean cake, polylactic acid, cyclodextrin, ethylenediamine disuccinic acid, lignosulfonate, D-lysine, alginic acid and 1-methylcyclopropene; the preparation method comprises the following steps: firstly, mixing and stirring the hydrilla verticillata, the calcium magnesium phosphate fertilizer, the bean cake, the polylactic acid, the cyclodextrin, the ethylenediamine disuccinic acid, the lignosulfonate, the D-lysine, the alginic acid and the 1-methylcyclopropene uniformly, and finally conveying the mixture to an extrusion granulator for extrusion granulation to obtain the compound fertilizer. The fertilizer provided by the invention can effectively reduce the content of lead in the corn and soil, and improve the yield and quality of the corn.
Description
Technical Field
The invention belongs to the technical field of fertilizers, and particularly relates to a fertilizer suitable for soil remediation and a preparation method thereof.
Background
With the rapid development of industrial and agricultural industries in China, heavy metal pollution of soil becomes a key focus of people. Lead pollutes soil seriously, and the lead-containing soil not only affects soil microorganisms, enzyme activity and physicochemical properties, but also secondarily pollutes surface water and underground water and harms human health through a food chain. The main causes of lead pollution of soil are coal, industrial lead, automobile exhaust and the like.
For the lead-polluted soil, the currently adopted main remediation methods such as physical/chemical remediation, microbial remediation and the like, however, the physical remediation, the chemical remediation or the microbial remediation have the defects of large investment, complex equipment, large environmental disturbance and the like, and the application of the method to the lead-polluted soil is limited. Although the prior art also adopts a plant restoration method to restore the lead-polluted soil, no method for processing lead which migrates into plants from the soil is provided, and the plant residues are easy to cause the secondary pollution of the soil if not processed or processed improperly. China has a large population and huge demand on grains, and the plant restoration in large-area medium and light polluted farmland to stop planting crops is obviously impossible. The method has the advantages that the method is more feasible and operable for screening and identifying the crops with low heavy metal accumulation from the crops or the varieties of the crops which are widely reserved at present on the medium-low polluted soil. The screening and identification procedures of the low-accumulation crops are simple and easy to implement, no ecological risk exists, and the screened low-accumulation crops can be directly popularized and applied locally.
Corn is an annual cross-pollinated plant with the same male and female plants, has tall and big plants and strong stems, is an important food crop and feed crop, is also the crop with the highest total yield all over the world, and has the planting area and the total yield which are second to rice and wheat. Corn has been praised as a long-life food all the time, contains rich protein, fat, vitamins, trace elements, cellulose and the like, and has great potential for developing high-nutrition and high-biological function foods. The existing research shows that the problems of serious growth and quality of the corn caused by the lead pollution in the soil occur, the root of the corn turns yellow and brown, and the root tip is necrotic, and meanwhile, the content of chlorophyll in the leaves of the corn is also influenced, and the growth and development of the corn are influenced.
Disclosure of Invention
1. Problems to be solved
Aiming at the problems in the prior art, the invention provides a fertilizer suitable for soil remediation and a preparation method thereof, which can effectively reduce the content of lead in corn and soil and improve the yield and quality of corn.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A fertilizer suitable for soil remediation comprises the following raw materials in parts by weight:
and (3) black algae soil: 40 to 60 portions of the raw materials are mixed,
calcium magnesium phosphate fertilizer: 10 to 30 portions of the raw materials are mixed,
bean cake: 6 to 18 portions of the raw materials are mixed,
polylactic acid: 7 to 16 portions of the raw materials are mixed,
cyclodextrin: 5 to 15 portions of the raw materials are mixed,
ethylenediamine disuccinic acid: 2 to 10 portions of the raw materials are mixed,
lignosulfonate (b): 2 to 8 portions of the raw materials are mixed,
d-lysine: 2 to 8 portions of the raw materials are mixed,
alginic acid: 1 to 6 portions of the raw materials are mixed,
1-methylcyclopropene: 0.5 to 1.5 portions.
The fertilizer suitable for soil remediation comprises the following raw materials in parts by weight:
and (3) black algae soil: 44 to 54 portions of the components of the emulsion,
calcium magnesium phosphate fertilizer: 13 to 25 portions of the mixture of the components,
bean cake: 8 to 14 portions of the raw materials are mixed,
polylactic acid: 9 to 13 portions of the mixture of the components,
cyclodextrin: 7 to 13 portions of the mixture of the components,
ethylenediamine disuccinic acid: 4 to 9 portions of the raw materials are mixed,
lignosulfonate (b): 2 to 8 portions of the raw materials are mixed,
d-lysine: 2 to 8 portions of the raw materials are mixed,
alginic acid: 1 to 6 portions of the raw materials are mixed,
1-methylcyclopropene: 0.5 to 1.5 portions.
The fertilizer suitable for soil remediation comprises the following raw materials in parts by weight:
and (3) black algae soil: 50 parts of (a) a mixture of (b),
calcium magnesium phosphate fertilizer: 19 parts of (a) to (b),
bean cake: 11 parts of (a) to (b),
polylactic acid: 11 parts of (a) to (b),
cyclodextrin: 10 parts of (a) to (b),
ethylenediamine disuccinic acid: 6 parts of (a) a mixture of (b),
lignosulfonate (b): 5 parts of (a) a mixture of (b),
d-lysine: 5 parts of (a) a mixture of (b),
alginic acid: 4, preparing 4 parts of the mixture,
1-methylcyclopropene: 1 part.
The particle size range of the hydrilla verticillata is 1cm-3 cm;
the fineness of the calcium magnesium phosphate fertilizer (passing through a test sieve of 0.25 mm) is more than or equal to 80 percent. (ii) a
The bean cake is soybean cake with particle size of 2-4 cm.
The purity of the D-lysine in the fertilizer suitable for soil remediation is more than or equal to 99%.
A preparation method of a fertilizer suitable for soil remediation comprises the following steps:
firstly, mixing and stirring the hydrilla verticillata, the calcium magnesium phosphate fertilizer, the bean cake, the polylactic acid, the cyclodextrin, the ethylenediamine disuccinic acid, the lignosulfonate, the D-lysine, the alginic acid and the 1-methylcyclopropene uniformly, and finally conveying the mixture to an extrusion granulator for extrusion granulation to obtain the compound fertilizer.
According to the preparation method of the fertilizer suitable for soil remediation, the hydrilla verticillata, the calcium magnesium phosphate fertilizer and the bean cake are all required to be crushed in advance, and the average particle size after crushing is 0.5 mm.
According to the preparation method of the fertilizer suitable for soil remediation, the particle size range after extrusion granulation is 4-8 mm.
According to the preparation method of the fertilizer suitable for soil remediation, the rotating speed for uniformly stirring is 200 rpm.
3. Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, a calcium magnesium phosphate fertilizer, polylactic acid, ethylenediamine disuccinic acid, lignosulfonate, D-lysine and alginic acid are introduced into the traditional basic fertilizer, so that the fertilizer not only can effectively reduce the lead content in corn plants and the lead content in soil, but also can improve the yield and quality of corn; experiments show that the fertilizer can effectively reduce the content of lead in the corn and improve the yield and quality of the corn.
Detailed Description
The invention is further described with reference to specific examples.
Example 1
The fertilizer suitable for soil remediation of the embodiment comprises the following raw materials in parts by weight:
and (3) black algae soil: 40 parts of (a) to (b),
calcium magnesium phosphate fertilizer: 30 parts of (a) to (b),
bean cake: 6 parts of (a) a mixture of (b),
polylactic acid: 16 parts of (a) to (b),
cyclodextrin: 5 parts of (a) a mixture of (b),
ethylenediamine disuccinic acid: 10 parts of (a) to (b),
lignosulfonate (b): 2 parts of (a) to (b),
d-lysine: 8 parts of (a) a mixture of (b),
alginic acid: 1 part of (A) and (B),
1-methylcyclopropene: 1.5 parts.
The particle size range of the hydrilla verticillata is 1 cm;
the particle size range of the calcium magnesium phosphate fertilizer is 3 cm;
the soybean cake is soybean cake with particle size of 2 cm.
The D-lysine has the purity of 99 percent.
The preparation method of the fertilizer suitable for soil remediation comprises the following steps:
firstly, mixing and stirring the hydrilla verticillata, the calcium magnesium phosphate fertilizer, the bean cake, the polylactic acid, the cyclodextrin, the ethylenediamine disuccinic acid, the lignosulfonate, the D-lysine, the alginic acid and the 1-methylcyclopropene uniformly, and finally conveying the mixture to an extrusion granulator for extrusion granulation to obtain the compound fertilizer.
According to the preparation method of the fertilizer suitable for soil remediation, the hydrilla verticillata, the calcium magnesium phosphate fertilizer and the bean cake are all required to be crushed in advance, and the average particle size after crushing is 0.5 mm.
According to the preparation method of the fertilizer suitable for soil remediation, the particle size range after extrusion granulation is 1 cm.
According to the preparation method of the fertilizer suitable for soil remediation, the rotating speed for uniformly stirring is 200 rpm.
Example 2
The fertilizer suitable for soil remediation of the embodiment comprises the following raw materials in parts by weight:
and (3) black algae soil: 60 parts of (a) to (b),
calcium magnesium phosphate fertilizer: 10 parts of (a) to (b),
bean cake: 18 parts of (a) to (b),
polylactic acid: 7 parts of (a) a mixture of (b),
cyclodextrin: 15 parts of (a) to (b),
ethylenediamine disuccinic acid: 2 parts of (a) to (b),
lignosulfonate (b): 8 parts of (a) a mixture of (b),
d-lysine: 2 parts of (a) to (b),
alginic acid: 6 parts of (a) a mixture of (b),
1-methylcyclopropene: 0.5 part.
The particle size range of the hydrilla verticillata is 3 cm;
the particle size range of the calcium magnesium phosphate fertilizer is 1 cm;
the soybean cake is soybean cake with particle size of 4 cm.
The D-lysine has the purity of 99 percent.
The preparation method of the fertilizer suitable for soil remediation comprises the following steps:
firstly, mixing and stirring the hydrilla verticillata, the calcium magnesium phosphate fertilizer, the bean cake, the polylactic acid, the cyclodextrin, the ethylenediamine disuccinic acid, the lignosulfonate, the D-lysine, the alginic acid and the 1-methylcyclopropene uniformly, and finally conveying the mixture to an extrusion granulator for extrusion granulation to obtain the compound fertilizer.
According to the preparation method of the fertilizer suitable for soil remediation, the hydrilla verticillata, the calcium magnesium phosphate fertilizer and the bean cake are all required to be crushed in advance, and the average particle size after crushing is 0.5 mm.
According to the preparation method of the fertilizer suitable for soil remediation, the particle size range after extrusion granulation is 2 cm.
According to the preparation method of the fertilizer suitable for soil remediation, the rotating speed for uniformly stirring is 200 rpm.
Example 3
The fertilizer suitable for soil remediation of the embodiment comprises the following raw materials in parts by weight:
and (3) black algae soil: 44 parts of (a) a mixture of (b),
calcium magnesium phosphate fertilizer: 25 parts of (a) to (b),
bean cake: 8 parts of (a) a mixture of (b),
polylactic acid: 13 parts of (a) to (b),
cyclodextrin: 7 parts of (a) a mixture of (b),
ethylenediamine disuccinic acid: 9 parts of (a) to (b),
lignosulfonate (b): 2 parts of (a) to (b),
d-lysine: 8 parts of (a) a mixture of (b),
alginic acid: 1 part of (A) and (B),
1-methylcyclopropene: 1.5 parts.
The particle size range of the hydrilla verticillata is 1 cm;
the particle size range of the calcium magnesium phosphate fertilizer is 1 cm;
the soybean cake is soybean cake with particle size of 2 cm.
The D-lysine has the purity of 99 percent.
The preparation method of the fertilizer suitable for soil remediation comprises the following steps:
firstly, mixing and stirring the hydrilla verticillata, the calcium magnesium phosphate fertilizer, the bean cake, the polylactic acid, the cyclodextrin, the ethylenediamine disuccinic acid, the lignosulfonate, the D-lysine, the alginic acid and the 1-methylcyclopropene uniformly, and finally conveying the mixture to an extrusion granulator for extrusion granulation to obtain the compound fertilizer.
According to the preparation method of the fertilizer suitable for soil remediation, the hydrilla verticillata, the calcium magnesium phosphate fertilizer and the bean cake are all required to be crushed in advance, and the average particle size after crushing is 0.5 mm.
According to the preparation method of the fertilizer suitable for soil remediation, the particle size range after extrusion granulation is 1 cm.
According to the preparation method of the fertilizer suitable for soil remediation, the rotating speed for uniformly stirring is 200 rpm.
Example 4
The fertilizer suitable for soil remediation of the embodiment comprises the following raw materials in parts by weight:
and (3) black algae soil: 54 parts of (a) to (b),
calcium magnesium phosphate fertilizer: 13 parts of (a) to (b),
bean cake: 14 parts of (a) to (b),
polylactic acid: 9 parts of (a) to (b),
cyclodextrin: 13 parts of (a) to (b),
ethylenediamine disuccinic acid: 4, preparing 4 parts of the mixture,
lignosulfonate (b): 8 parts of (a) a mixture of (b),
d-lysine: 2 parts of (a) to (b),
alginic acid: 6 parts of (a) a mixture of (b),
1-methylcyclopropene: 0.5 part.
The particle size range of the hydrilla verticillata is 3 cm;
the particle size range of the calcium magnesium phosphate fertilizer is 3 cm;
the soybean cake is soybean cake with particle size of 4 cm.
The D-lysine has the purity of 99 percent.
The preparation method of the fertilizer suitable for soil remediation comprises the following steps:
firstly, mixing and stirring the hydrilla verticillata, the calcium magnesium phosphate fertilizer, the bean cake, the polylactic acid, the cyclodextrin, the ethylenediamine disuccinic acid, the lignosulfonate, the D-lysine, the alginic acid and the 1-methylcyclopropene uniformly, and finally conveying the mixture to an extrusion granulator for extrusion granulation to obtain the compound fertilizer.
According to the preparation method of the fertilizer suitable for soil remediation, the hydrilla verticillata, the calcium magnesium phosphate fertilizer and the bean cake are all required to be crushed in advance, and the average particle size after crushing is 0.5 mm.
According to the preparation method of the fertilizer suitable for soil remediation, the particle size range after extrusion granulation is 2 cm.
According to the preparation method of the fertilizer suitable for soil remediation, the rotating speed for uniformly stirring is 200 rpm.
Example 5
The fertilizer suitable for soil remediation of the embodiment comprises the following raw materials in parts by weight:
and (3) black algae soil: 50 parts of (a) a mixture of (b),
calcium magnesium phosphate fertilizer: 19 parts of (a) to (b),
bean cake: 11 parts of (a) to (b),
polylactic acid: 11 parts of (a) to (b),
cyclodextrin: 10 parts of (a) to (b),
ethylenediamine disuccinic acid: 6 parts of (a) a mixture of (b),
lignosulfonate (b): 5 parts of (a) a mixture of (b),
d-lysine: 5 parts of (a) a mixture of (b),
alginic acid: 4, preparing 4 parts of the mixture,
1-methylcyclopropene: 1 part.
The particle size range of the hydrilla verticillata is 2 cm;
the particle size range of the calcium magnesium phosphate fertilizer is 2 cm;
the bean cake is soybean cake with particle size of 3 cm.
The D-lysine has the purity of 99 percent.
The preparation method of the fertilizer suitable for soil remediation comprises the following steps:
firstly, mixing and stirring the hydrilla verticillata, the calcium magnesium phosphate fertilizer, the bean cake, the polylactic acid, the cyclodextrin, the ethylenediamine disuccinic acid, the lignosulfonate, the D-lysine, the alginic acid and the 1-methylcyclopropene uniformly, and finally conveying the mixture to an extrusion granulator for extrusion granulation to obtain the compound fertilizer.
According to the preparation method of the fertilizer suitable for soil remediation, the hydrilla verticillata, the calcium magnesium phosphate fertilizer and the bean cake are all required to be crushed in advance, and the average particle size after crushing is 0.5 mm.
According to the preparation method of the fertilizer suitable for soil remediation, the particle size range after extrusion granulation is 1 cm.
According to the preparation method of the fertilizer suitable for soil remediation, the rotating speed for uniformly stirring is 200 rpm.
Comparative example 1
The fertilizer suitable for soil remediation of the embodiment comprises the following raw materials in parts by weight:
and (3) black algae soil: 50 parts of (a) a mixture of (b),
bean cake: 11 parts of (a) to (b),
cyclodextrin: 10 parts of (a) to (b),
ethylenediamine disuccinic acid: 6 parts of (a) a mixture of (b),
lignosulfonate (b): 5 parts of (a) a mixture of (b),
d-lysine: 5 parts of (a) a mixture of (b),
alginic acid: 4, preparing 4 parts of the mixture,
1-methylcyclopropene: 1 part.
The particle size range of the hydrilla verticillata is 2 cm;
the bean cake is soybean cake with particle size of 3 cm.
The D-lysine has the purity of 99 percent.
The preparation method of the fertilizer suitable for soil remediation comprises the following steps:
firstly, mixing and stirring the hydrilla verticillata, the bean cake, the cyclodextrin, the ethylenediamine disuccinic acid, the lignosulfonate, the D-lysine, the alginic acid and the 1-methylcyclopropene uniformly, and finally conveying the mixture to an extrusion granulator for extrusion granulation to obtain the compound fertilizer.
According to the preparation method of the fertilizer suitable for soil remediation, the hydrilla verticillata and the bean cakes are crushed in advance, and the average particle size of the crushed mixture is 0.5 mm.
According to the preparation method of the fertilizer suitable for soil remediation, the particle size range after extrusion granulation is 1 cm.
According to the preparation method of the fertilizer suitable for soil remediation, the rotating speed for uniformly stirring is 200 rpm.
Comparative example 2
The fertilizer suitable for soil remediation of the embodiment comprises the following raw materials in parts by weight:
and (3) black algae soil: 50 parts of (a) a mixture of (b),
calcium magnesium phosphate fertilizer: 19 parts of (a) to (b),
bean cake: 11 parts of (a) to (b),
polylactic acid: 11 parts of (a) to (b),
cyclodextrin: 10 parts of (a) to (b),
d-lysine: 5 parts of (a) a mixture of (b),
alginic acid: 4, preparing 4 parts of the mixture,
1-methylcyclopropene: 1 part.
The particle size range of the hydrilla verticillata is 2 cm;
the particle size range of the calcium magnesium phosphate fertilizer is 2 cm;
the bean cake is soybean cake with particle size of 3 cm.
The D-lysine has the purity of 99 percent.
The preparation method of the fertilizer suitable for soil remediation comprises the following steps:
firstly, mixing and stirring the hydrilla verticillata, the calcium magnesium phosphate fertilizer, the bean cake, the polylactic acid, the cyclodextrin, the D-lysine, the alginic acid and the 1-methylcyclopropene uniformly, and finally conveying the mixture to an extrusion granulator for extrusion granulation to obtain the compound fertilizer.
According to the preparation method of the fertilizer suitable for soil remediation, the hydrilla verticillata, the calcium magnesium phosphate fertilizer and the bean cake are all required to be crushed in advance, and the average particle size after crushing is 0.5 mm.
According to the preparation method of the fertilizer suitable for soil remediation, the particle size range after extrusion granulation is 1 cm.
According to the preparation method of the fertilizer suitable for soil remediation, the rotating speed for uniformly stirring is 200 rpm.
Comparative example 3
The fertilizer suitable for soil remediation of the embodiment comprises the following raw materials in parts by weight:
and (3) black algae soil: 50 parts of (a) a mixture of (b),
calcium magnesium phosphate fertilizer: 19 parts of (a) to (b),
bean cake: 11 parts of (a) to (b),
polylactic acid: 11 parts of (a) to (b),
cyclodextrin: 10 parts of (a) to (b),
ethylenediamine disuccinic acid: 6 parts of (a) a mixture of (b),
lignosulfonate (b): 5 parts of (a) a mixture of (b),
1-methylcyclopropene: 1 part.
The particle size range of the hydrilla verticillata is 2 cm;
the particle size range of the calcium magnesium phosphate fertilizer is 2 cm;
the bean cake is soybean cake with particle size of 3 cm.
The preparation method of the fertilizer suitable for soil remediation comprises the following steps:
firstly, mixing and stirring the hydrilla verticillata, the calcium magnesium phosphate fertilizer, the bean cake, the polylactic acid, the cyclodextrin, the ethylenediamine disuccinic acid, the lignosulfonate and the 1-methylcyclopropene uniformly, and finally conveying the mixture to an extrusion granulator for extrusion granulation to obtain the fertilizer.
According to the preparation method of the fertilizer suitable for soil remediation, the hydrilla verticillata, the calcium magnesium phosphate fertilizer and the bean cake are all required to be crushed in advance, and the average particle size after crushing is 0.5 mm.
According to the preparation method of the fertilizer suitable for soil remediation, the particle size range after extrusion granulation is 1 cm.
According to the preparation method of the fertilizer suitable for soil remediation, the rotating speed for uniformly stirring is 200 rpm.
Comparative example 4
Chinese invention patent, application number: CN201610826131.4, public publication number: CN106478287A discloses a soil conditioner for repairing heavy metal contaminated soil by adopting a chemical passivation method, and the specific implementation manner of the specification is as follows:
"example 1
A soil conditioner for repairing heavy metal contaminated soil by adopting a chemical passivation method is composed of the following raw materials in parts by mass: 30 parts of pine charcoal, 8 parts of straw, 10 parts of cow dung, 12 parts of chicken manure, 5 parts of peanut bran, 8 parts of humic acid, 6 parts of bone charcoal, 11 parts of natural zeolite, 10 parts of ground phosphate rock and 7 parts of silica fume; the pine charcoal is prepared at 500 ℃; fermenting and decomposing straw, cow dung, chicken manure and peanut bran, drying until the water content is 12%, and then crushing until the particle size of 95% of the materials is less than 1 cm.
Comparative example 5
Chinese invention patent, application number: CN201711197696.1, public publication number: CN107954799A discloses a novel repairing water-soluble fertilizer and a preparation method thereof, and the specific implementation manner of the specification is as follows:
"example 1
The novel repairing water-soluble fertilizer comprises the following raw materials in parts by weight: 10kg of urea, 8kg of ammonium nitrate, 10kg of heavy calcium superphosphate, 10kg of potassium nitrate, 8kg of potassium sulfate, 8kg of humic acid, 6kg of compound trace fertilizer, 10kg of compound bacteria, 15kg of complexing agent and a plurality of water; the compound micro-fertilizer is prepared by mixing 0.2kg of lead sulfate, 0.2kg of zinc sulfate, 0.1kg of magnesium sulfate, 0.2kg of borax, 0.1kg of ferrous sulfate and 0.3kg of ammonium molybdate; the composite bacteria are prepared by mixing streptomyces jingyangensis, bacillus mucilaginosus, lactobacillus acidophilus and bacillus laterosporus according to the weight ratio of 0.1: 0.3: 0.2: 0.8 by mass ratio; the complexing agent is prepared by mixing polyamino acid and protein according to the weight ratio of 0.6: 0.1 by mass ratio; the polyamino acid is prepared by mixing polyaspartic acid, polyglycine and polylysine according to the weight ratio of 0.2: 0.1: 0.3 by mass ratio.
The preparation method of the novel repairing water soluble fertilizer comprises the following steps:
(1) preparing an inorganic fertilizer: weighing and mixing urea, ammonium nitrate, triple superphosphate, potassium nitrate, potassium sulfate and a compound micro-fertilizer according to a formula ratio, adding 0.6-0.8 time of water into the mixture, heating to dissolve, cooling to dry, and crushing to obtain an inorganic fertilizer;
(2) culturing compound bacteria: putting the strain of the compound bacteria into a culture solution, and culturing for 24-28 h at 36.5 ℃ under the environment with the relative humidity of 35%; the culture solution is prepared by mixing 50% glucose solution with sodium selenate to 20% solution;
(3) preparing a water-soluble fertilizer: heating water to 60 ℃ for constant, dissolving the inorganic fertilizer, adding citric acid accounting for 20% of the weight of the inorganic fertilizer, stirring for 20min, adding humic acid, stirring for 60min, cooling to 35 ℃, adding the complexing agent and the composite bacteria, and uniformly mixing to obtain the water-soluble fertilizer.
Example 6
Specific applications of the fertilizers in examples 1-5 and comparative examples 1-5:
we examined the performance indicators of different fertilizers suitable for soil remediation, with the results as follows (as shown in table 1):
the specific test method is as follows: selecting a certain corn test point (the lead element content in the soil is 64mg/kg) in Changfeng county of Anhui Hefei, transplanting healthy corns (seeds are purchased from Hefei Fengle Seiko GmbH, variety No. 21) in a seedling stage, applying the fertilizer, and then measuring the lead element content in the corns and the quality of the corns in a kernel stage of the corns.
TABLE 1
Tests show (in combination with table 1), compared with comparative examples 1 to 5, the fertilizers of examples 1 to 5 have the advantages that the lead content in the corn is remarkably reduced, and in addition, the yield and the quality of the corn can be obviously improved by the fertilizers; in examples 1 to 5, different contents of each component in the fertilizer have different effects on the application effect of the product, wherein the fertilizer prepared in example 5 has large difference in the significance of each index.
In conclusion, the calcium magnesium phosphate fertilizer, the polylactic acid, the ethylenediamine disuccinic acid, the lignosulfonate, the D-lysine and the alginic acid are introduced into the traditional basic fertilizer, so that the fertilizer not only can effectively reduce the lead content in corn plants and the lead content in soil, but also can improve the yield and the quality of corn; experiments show that the fertilizer can effectively reduce the content of lead in the corn and improve the yield and quality of the corn.
While the invention has been described in further detail in connection with specific embodiments thereof, it will be understood that the invention is not limited thereto, and that various other modifications and substitutions may be made by those skilled in the art without departing from the spirit of the invention, which should be considered to be within the scope of the invention as defined by the appended claims.
Claims (9)
1. A fertilizer suitable for soil remediation is characterized in that: the composite material comprises the following raw materials in parts by weight:
and (3) black algae soil: 40 to 60 portions of the raw materials are mixed,
calcium magnesium phosphate fertilizer: 10 to 30 portions of the raw materials are mixed,
bean cake: 6 to 18 portions of the raw materials are mixed,
polylactic acid: 7 to 16 portions of the raw materials are mixed,
cyclodextrin: 5 to 15 portions of the raw materials are mixed,
ethylenediamine disuccinic acid: 2 to 10 portions of the raw materials are mixed,
lignosulfonate (b): 2 to 8 portions of the raw materials are mixed,
d-lysine: 2 to 8 portions of the raw materials are mixed,
alginic acid: 1 to 6 portions of the raw materials are mixed,
1-methylcyclopropene: 0.5 to 1.5 portions.
2. Fertilizer suitable for soil remediation according to claim 1, characterized in that: the composite material comprises the following raw materials in parts by weight:
and (3) black algae soil: 44 to 54 portions of the components of the emulsion,
calcium magnesium phosphate fertilizer: 13 to 25 portions of the mixture of the components,
bean cake: 8 to 14 portions of the raw materials are mixed,
polylactic acid: 9 to 13 portions of the mixture of the components,
cyclodextrin: 7 to 13 portions of the mixture of the components,
ethylenediamine disuccinic acid: 4 to 9 portions of the raw materials are mixed,
lignosulfonate (b): 2 to 8 portions of the raw materials are mixed,
d-lysine: 2 to 8 portions of the raw materials are mixed,
alginic acid: 1 to 6 portions of the raw materials are mixed,
1-methylcyclopropene: 0.5 to 1.5 portions.
3. Fertilizer suitable for soil remediation according to claim 2, characterized in that: the composite material comprises the following raw materials in parts by weight:
and (3) black algae soil: 50 parts of (a) a mixture of (b),
calcium magnesium phosphate fertilizer: 19 parts of (a) to (b),
bean cake: 11 parts of (a) to (b),
polylactic acid: 11 parts of (a) to (b),
cyclodextrin: 10 parts of (a) to (b),
ethylenediamine disuccinic acid: 6 parts of (a) a mixture of (b),
lignosulfonate (b): 5 parts of (a) a mixture of (b),
d-lysine: 5 parts of (a) a mixture of (b),
alginic acid: 4, preparing 4 parts of the mixture,
1-methylcyclopropene: 1 part.
4. A fertilizer suitable for soil remediation according to any one of claims 1 to 3 wherein:
the particle size range of the hydrilla verticillata is 1cm-3 cm;
the particle size range of the calcium magnesium phosphate fertilizer is 1cm-3 cm;
the bean cake is soybean cake with particle size of 2-4 cm.
5. A fertilizer suitable for soil remediation according to any one of claims 1 to 3 wherein:
the purity of the D-lysine is more than or equal to 99 percent.
6. A preparation method of a fertilizer suitable for soil remediation comprises the following steps:
firstly, mixing and stirring the hydrilla verticillata, the calcium magnesium phosphate fertilizer, the bean cake, the polylactic acid, the cyclodextrin, the ethylenediamine disuccinic acid, the lignosulfonate, the D-lysine, the alginic acid and the 1-methylcyclopropene uniformly, and finally conveying the mixture to an extrusion granulator for extrusion granulation to obtain the compound fertilizer.
7. The method for preparing a fertilizer suitable for soil remediation according to claim 6, wherein:
the stated black algae soil, stated calcium magnesium phosphate fertilizer, stated bean cake need carry on the breakage in advance, the mean grain size after breaking is 0.5 mm.
8. The method for preparing a fertilizer suitable for soil remediation according to claim 6, wherein:
the particle size range after extrusion granulation is 1cm-2 cm.
9. The method for preparing a fertilizer suitable for soil remediation according to claim 6, wherein:
the rotating speed of stirring and uniformly mixing is 200 rpm.
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| CN113637484A (en) * | 2021-08-13 | 2021-11-12 | 史丹利农业集团股份有限公司 | Multifunctional soil remediation agent and preparation method thereof |
| CN114350376A (en) * | 2022-01-21 | 2022-04-15 | 乐山师范学院 | Heavy metal contaminated soil remediation agent and preparation method and application thereof |
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