CN113024311A - Boron-magnesium-calcium soil conditioner and preparation method thereof - Google Patents
Boron-magnesium-calcium soil conditioner and preparation method thereof Download PDFInfo
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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
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D9/00—Other inorganic fertilisers
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- 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 preparation method of a boron-magnesium-calcium soil conditioner, wherein the proportion of boron mud is set to be 60-80%, the proportion of fulvic acid is set to be 10-20%, zinc chelate is 1-8%, manganese chelate is 1-5%, and the proportion of a filler is set to be 10-20%, wherein the filler can be bentonite, zeolite powder and/or fly ash. The invention combines and processes the boric sludge rich in various medium and trace elements such as magnesium, boron, iron, calcium, silicon, manganese, molybdenum and the like with fulvic acid, chelated zinc and chelated manganese. The organic matter of the soil is integrally increased, the pH value of the soil is adjusted, the buffering capacity of the soil is enhanced, the nutrient elements of silicon, boron, magnesium and potassium in the soil are increased, the pollution of boron mud to the environment is reduced, and the ecological environment is protected.
Description
Technical Field
The invention relates to an effective technology for utilizing a large amount of boron mud generated after borax is produced, in particular to a boron-magnesium-calcium soil conditioner and a preparation method thereof.
Background information
Boron mud and boron-magnesium tailings are tailings in boron industry in China, the boron mud is piled up like a mountain, the amount of the boron mud in a Liaoning wide county area is more than 3000 ten thousand tons, generally, 4-5 tons of boron mud are removed every 1 ton of borax is produced, and 5 ten thousand tons of boron mud are removed in a borax plant producing 1 thousand tons every year. The boric sludge is alkaline, the pH value is 9-10, the piled grass cannot grow, and the boric sludge occupies a large amount of cultivated land, so that the precious cultivated land is occupied, the ecological environment is also seriously damaged, how to effectively utilize the waste resource is an important subject in the front of scientific and technological workers, the most economic and promising technical means at present is to process the boric sludge or the boron-magnesium tailings into the boron-magnesium fertilizer at low cost, the boric sludge is rich in medium and trace elements necessary for various crops such as magnesium, boron, iron, calcium, silicon, manganese, molybdenum and the like, and the content of harmful heavy metals is extremely low (within the standard control range of the fertilizer).
Acid soils are widely distributed in south China and the pH of acid soils will typically be below 5. Except for planting some acid-resistant commercial crops (beans, tobacco, jasmine and the like), ordinary crops generally cannot grow normally. And the northern area of China is the main distribution area of alkaline soil, such as Tianjin, Dezhou, Lianyun harbor and other areas. The pH value of the alkaline soil is higher than 8, and the alkaline soil also has certain influence on the growth of crops. The chemical composition of boron sludge varies due to differences in the production process, but most of boron sludge is mainly composed of magnesium, silicon and boron, and also contains a small amount of nutrients such as iron and calcium, which are essential for crop production. Therefore, the boron mud is processed to prepare the boron-magnesium fertilizer, and then the boron-magnesium fertilizer is applied to crop production, so that not only is the resource reutilizing realized, the environmental pressure reduced, but also the requirement of different nutrient elements for providing sufficient nutrients for the growth of plants is met. However, the conventional borax extraction process is relatively simple, the consumption of boric sludge is low despite various boric sludge utilization technologies, only a part of enterprises in agriculture only granulate boric sludge after simple acid-base reaction to prepare the boric magnesium fertilizer, and the economic value of the boric magnesium fertilizer is not fully reflected, so that research and development of a boric sludge resource utilization technology are necessary.
Disclosure of Invention
Aiming at the defects, the invention aims to provide a boron-magnesium-calcium soil conditioner and a preparation method thereof.
In order to achieve the purpose, the invention adopts the technical scheme that:
the boron-magnesium-calcium soil conditioner comprises, by mass, 60-80% of treated boric sludge, 10-20% of fulvic acid, 1-8% of chelated zinc, 1-5% of chelated manganese and 10-20% of a filler; wherein the filler can be bentonite, zeolite powder and/or fly ash.
Preferably: according to the mass percentage, the treated boric sludge is 60-70%, the fulvic acid is 10-15%, the chelated zinc is 6-8%, the chelated manganese is 4-5%, and the filling material is 10-15%; wherein the filler is bentonite.
The treated boron mud is boron mud generated by borax production of boron-magnesium ore by a carbon-alkali method, the boron mud is treated for 5-8 min by acid with the concentration of 40-75%, and then the pH value of the system is adjusted to 6.0-10.0 for later use; wherein the mass ratio of the boric sludge to the acid to the water is 1:1.5-1.8:3-5, and the acid is sulfuric acid or nitric acid.
Mixing organic acid with zinc sulfate and manganese sulfate respectively, mixing, fully and uniformly mixing with water respectively, carrying out repeated chelation after uniform mixing until the chelation is completely cooled to normal temperature, and crushing for later use; the repeated chelation was carried out for 6 to 8 hours at 105 ℃ and 115 ℃ each time.
And (3) detecting whether the chelation reaction is complete or not by using a monoammonium phosphate solution, indicating that the chelation is complete if no precipitate is generated, indicating that the chelation is incomplete if no precipitate is generated, wetting the chelate reaction by using water again, and repeating the steps to perform the chelation reaction.
When the organic acid is chelated with zinc sulfate and manganese sulfate respectively, the mass ratio of the organic acid to the zinc sulfate or the organic acid to the manganese sulfate is 1.5-2.0: 1; the amount of the water accounts for 70-80% of the total mass (the total mass of the organic acid and the zinc sulfate or the organic acid and the manganese sulfate).
The organic acid is EDTA, amino acid or humic acid.
In the boron-magnesium-calcium soil conditioner, 80% of particles of the boron mud can pass through a 200-mesh sieve; the boron mud comprises the following main chemical components: b is2O32.0-8.0 percent of magnesium oxide, 18.0-25.0 percent of MgO and 3.0-9.0 percent of CaO. Specifically, the boric sludge is sludge (boric sludge) generated by borax production by a boromagnesite ore-carbon alkali method, or is directly prepared by taking low-grade boron-magnesium tailings as a basic raw material through a chemical methodGranular, off-white, pale yellow, approximately 80% of the particles passing through a 200 mesh sieve and having weak alkalinity.
In the boron-magnesium-calcium soil conditioner, the zinc content in the prepared chelated zinc is 25%; the manganese content in the chelated manganese is 20%.
A process for preparing the boron-magnesium-calcium soil conditioner includes such steps as respectively treating the components in conditioner, proportionally mixing, pulverizing to 100 meshes, granulating and air drying.
The application method of the boron-magnesium-calcium soil conditioner is characterized in that the boron-magnesium-calcium soil conditioner is applied to a farmland and is applied 5-8 days before crops are planted, and the dosage of the boron-magnesium-calcium soil conditioner is 150 kilograms per mu of land.
Uniformly spreading the boron-magnesium-calcium soil conditioner on the soil surface, thoroughly and uniformly mixing the soil conditioner with 0-15cm of surface soil through plowing, watering to enable the water content of the soil to reach 20% -35%, and carrying out crop planting after 5-8 days of maintenance.
The invention has the advantages that:
the regulator combines the boric sludge, the fulvic acid and the prepared chelating agent, can further chelate nutrients in the boric sludge, and then is mixed with the fulvic acid of the humus to mix with the chelated substances, so that the obtained soil conditioner has the nutrient characteristics of the substances and can improve the utilization efficiency of the nutrients; the method specifically comprises the following steps:
1. the regulator of the invention utilizes trace elements in the boron mud to mix with added fulvic acid, chelated zinc and chelated manganese, the chelating agent can chelate the trace elements in the boron mud again, the chelated zinc and chelated manganese are chelated with organic acid, the pH can be regulated, the fixation by soil can be avoided, the utilization rate of nutrients in the boron mud can be improved, the boron mud can be applied into the soil to improve the content of organic matters in the soil, the composition of colloid adsorptive ions of the soil can be changed, the soil structure can be improved, the soil permeability can be increased, and 3, the aim of improving the soil can be achieved.
2. The regulator of the invention not only improves the soil, but also eliminates the nutrient deficiency of crops caused by the deficiency of medium trace elements in the soil, thereby reducing the occurrence of crop diseases and insect pests. Meanwhile, the acidified boric sludge has stronger thermal stability, can better utilize the alkalescence of the boric sludge or the boron-magnesium tailings to neutralize excessive acid in soil so as to increase the pH value of the soil, can reduce the acidity particularly for soil with serious southern acidification hardening, and can supplement trace elements for crops to repair the soil structure.
3. Energy conservation and emission reduction, environmental protection and reduction of the harm of boron mud or boron magnesium tailings to the environment. The invention changes waste into valuable by applying the boric sludge generated by producing the borax, and in addition, the fulvic acid and the chelating agent are added, so that the invention has no pollution to the environment, can save the development of silicon, boron, magnesium and potassium resources and reduce the damage to the environment.
Detailed description of the preferred embodiments
The following examples are presented to further illustrate embodiments of the present invention, and the embodiments described herein are intended to be illustrative and explanatory only and are not intended to be limiting.
Example 1
B, Mg-Ca soil conditioner: according to the weight percentage, the boron mud after treatment is 60 percent, the fulvic acid is 15 percent, the chelated zinc is 6 percent, the chelated manganese is 4 percent, and the filling material is 15 percent.
Wherein:
the boron mud after treatment is sludge (boron mud) produced by borax production from boron-magnesium ore by a carbon-alkali method, is sieved by a 200-mesh sieve and is mixed with 75% concentrated sulfuric acid in a stirrer, after acid treatment is carried out for 5min and the reaction is completed, the pH value of a system is adjusted to 10, and the boron mud is filtered and naturally air-dried for standby.
The dosage of the boric sludge, the acid and the water is 1:1.8: 5.
The boron mud mainly comprises the following chemical components: b is2O3 7.6％、MgO 22.0％、CaO 6.5％。
The chelated zinc or chelated manganese is prepared by mixing organic acid with zinc sulfate and manganese sulfate respectively, mixing the organic acid with zinc sulfate and manganese sulfate respectively, fully and uniformly mixing the organic acid with water, carrying out chelation reaction for 6 hours at 105 ℃, detecting whether precipitate is generated by monoammonium phosphate solution, indicating that the chelate is complete if no precipitate is generated, indicating that the chelate is incomplete if the precipitate is generated, wetting the chelate with water again, carrying out chelation reaction at 105 ℃, repeating the steps until the chelate is complete, cooling to normal temperature, and crushing for later use.
The mass ratio of the humic acid to the zinc sulfate or the humic acid to the manganese sulfate is 1.5: 1; the amount of water accounts for 70% of the total mass (the total mass of the organic acid and the zinc sulfate or the organic acid and the manganese sulfate).
The preparation method of the boron-magnesium-calcium soil conditioner comprises the steps of respectively treating all components in the conditioner, mixing according to the proportion, crushing, granulating and air-drying.
Example 2
Test materials: the boron-magnesium-calcium soil conditioning agent mainly comprises 65% of acidic boron mud, 15% of fulvic acid, 5% of chelated zinc, 5% of chelated manganese and 10% of a filling material.
Wherein:
the boron mud after treatment is sludge (boron mud) produced by borax production from boron-magnesium ore by a carbon-alkali method, is sieved by a 200-mesh sieve and is mixed with 65% concentrated sulfuric acid in a stirrer, after the reaction is completed after 6min of acid treatment, the pH value of a system is adjusted to 9, and the boron mud is filtered and naturally air-dried for later use.
The dosage of the boric sludge, the acid and the water is 1:1.7: 4.
The boron mud mainly comprises the following chemical components: b is2O3 7.0％、MgO 23.0％、CaO 7％。
The chelated zinc or chelated manganese is prepared by mixing organic acid with zinc sulfate and manganese sulfate respectively, mixing the organic acid with zinc sulfate and manganese sulfate respectively, fully and uniformly mixing the organic acid with water, carrying out chelation reaction for 6 hours at 110 ℃, detecting whether precipitate is generated by monoammonium phosphate solution, indicating that the chelate is complete if no precipitate is generated, indicating that the chelate is incomplete if the precipitate is generated, wetting the chelate with water again, carrying out chelation reaction at 110 ℃, repeating the steps until the chelate is complete, cooling to normal temperature, and crushing for later use.
The mass ratio of the humic acid to the zinc sulfate or the humic acid to the manganese sulfate is 1.6: 1; the amount of water accounts for 70% of the total mass (the total mass of the organic acid and the zinc sulfate or the organic acid and the manganese sulfate).
The preparation method of the boron-magnesium-calcium soil conditioner comprises the steps of respectively treating the components in the conditioner, mixing according to the proportion, crushing, granulating and air-drying.
Example 3
Test materials: the boron-magnesium-calcium soil conditioning agent mainly comprises 65% of acidic boron mud, 10% of fulvic acid, 7% of chelated zinc, 3% of chelated manganese and 15% of a filler.
Wherein:
the boron mud after treatment is sludge (boron mud) produced by borax production from boron-magnesium ore by a carbon-alkali method, is sieved by a 200-mesh sieve and is mixed with 55% concentrated sulfuric acid in a stirrer, after the reaction is completed after acid treatment for 7min, the pH value of a system is adjusted to 8, and the boron mud is filtered and naturally air-dried for later use.
The dosage of the boric sludge, the acid and the water is 1:1.6: 4.
The boron mud mainly comprises the following chemical components: b is2O3 6.5％、MgO 21.0％、CaO 6.1％。
The chelated zinc or chelated manganese is prepared by mixing organic acid with zinc sulfate and manganese sulfate respectively, mixing the organic acid with zinc sulfate and manganese sulfate respectively, fully and uniformly mixing the organic acid with water, carrying out chelation reaction for 7 hours at 110 ℃, detecting whether precipitate is generated by monoammonium phosphate solution, indicating that the chelate is complete if no precipitate is generated, indicating that the chelate is incomplete if the precipitate is generated, wetting the chelate with water again, carrying out chelation reaction at 110 ℃, repeating the steps until the chelate is complete, cooling to normal temperature, and crushing for later use.
The mass ratio of the humic acid to the zinc sulfate or the humic acid to the manganese sulfate is 1.8: 1; the amount of water accounts for 75% of the total mass (the total mass of the organic acid and the zinc sulfate or the organic acid and the manganese sulfate).
The preparation method of the boron-magnesium-calcium soil conditioner comprises the steps of respectively treating all components in the conditioner, mixing according to the proportion, crushing, granulating and air-drying.
Example 4
Test materials: the boron-magnesium-calcium soil conditioning agent mainly comprises 70% of acidic boron mud, 10% of fulvic acid, 6% of chelated zinc, 4% of chelated manganese and 10% of a filler.
Wherein:
the boron mud after treatment is sludge (boron mud) produced by borax production from boron-magnesium ore by a carbon-alkali method, is sieved by a 200-mesh sieve and is mixed with 40% concentrated sulfuric acid in a stirrer, after the reaction is completed after acid treatment for 8min, the pH value of a system is adjusted to 7, and the boron mud is filtered and naturally air-dried for later use.
The dosage of the boric sludge, the acid and the water is 1:1.5: 3.
The boron mud mainly comprises the following chemical components: b is2O3 7.3％、MgO 20.0％、CaO 6.0％。
The chelated zinc or chelated manganese is prepared by mixing organic acid with zinc sulfate and manganese sulfate respectively, mixing the organic acid with zinc sulfate and manganese sulfate respectively, fully and uniformly mixing the organic acid with water, carrying out chelation reaction for 8 hours at 115 ℃, detecting whether precipitate is generated by monoammonium phosphate solution, indicating that chelation is complete if no precipitate is generated, indicating that chelation is incomplete if precipitate is generated, wetting the chelated zinc or manganese chelate with water again, carrying out chelation reaction by repeating the steps until chelation is complete, cooling to normal temperature, and crushing for later use.
The mass ratio of the humic acid to the zinc sulfate or the humic acid to the manganese sulfate is 2.0: 1; the amount of water accounts for 80% of the total mass (the total mass of the organic acid and the zinc sulfate or the organic acid and the manganese sulfate).
The preparation method of the boron-magnesium-calcium soil conditioner comprises the steps of respectively treating all components in the conditioner, mixing according to the proportion, crushing, granulating and air-drying.
Application example:
test time: 3 months in 2018-6 months in 2019
Test site: rural pre-nourishment village of Shibao in Liaozhong county
The test plants: the tomato is the variety of the pink plumepoppy herb.
Test soil: the soil meadow soil has the soil pH of 5.5, organic matter of 21.6g/kg, alkaline hydrolysis nitrogen of 125mg/kg, quick-acting potassium of 326mg/kg and CEC value of 18.83cmol/kg before test.
And (3) experimental design: the test was set up with 4 treatments,
the treatment 1 is applied with conventional fertilization in time according to a conventional mode; treating 2, applying fine soil on the surface of the soil, and then applying conventional fertilizer in due time according to a conventional mode; treating 3, applying fine soil on the surface of the soil, adding the conventional boron mud soil conditioner (the boron mud soil conditioner taking boron mud, bacillus subtilis, a jelly-like Paenibacillus rod and calcium hydroxide as main raw materials) on the market, treating 4, applying fine soil on the surface of the soil, adding the boron magnesium calcium soil conditioner of example 1, which is equal to the conventional boron mud soil conditioner on the market, and applying conventional fertilization in a conventional manner at proper time.
The thickness of the fine soil applied is 0.3cm, and the area of each experimental group cell is 20m2And about 3300 plants per mu are protected. Three treatments, three replicates, randomized. Meanwhile, the addition amount of the boron-magnesium-calcium soil conditioner is 100kg/667m2Uniformly spreading the boron-magnesium-calcium soil conditioner on the soil surface, thoroughly and uniformly mixing the soil conditioner with 0-15cm of surface soil through plowing, watering to enable the water content of the soil to reach 20% -35%, and carrying out crop planting after 5-8 days of maintenance.
Other pest control and field management are the same as the local routine.
The test was routinely fertilized: base fertilizer, namely 50 kg of fertilizer application amount per mu of Batian compound fertilizer (15-15-15) and 30 kg of compound fertilizer (20-20-20), which is applied for four times on average, wherein each time is 7 days apart; the treated soil was then tested for pH, soil CEC, tomato fertility traits, and tomato egg production (see tables 1-4).
And (3) test results:
TABLE 1 Effect of different test treatments on soil pH
The continuous two-year test result shows that the pH value of the boron-magnesium-calcium soil conditioner applied in 2018 is increased by 0.43 compared with that of the existing boron mud soil conditioner applied on the market, the pH value of the soil conditioner is increased by 0.53 compared with that of the soil applied by the conventional method, and the pH value of the soil conditioner applied by the conventional method is increased by 0.53 compared with that of the soil applied by fine soil; the pH value of the boron-magnesium-calcium soil conditioner applied in 2019 is increased by 0.21 compared with that of the existing boron-mud soil conditioner applied in the market, is increased by 0.57 compared with that of the conventional fertilizing soil, and is increased by 0.54 compared with that of the applied fine soil. The soil pH value is increased by 0.3 in 2019 by applying the boron-magnesium-calcium soil conditioner compared with the soil pH value in 2018, so that the effect of obviously improving the soil pH value by applying the boron-magnesium-calcium soil conditioner can be proved.
TABLE 2 Effect of different test treatments on soil CEC values
The continuous two-year test result shows that the CEC value of the boron-magnesium-calcium soil conditioner applied in 2018 is increased by 0.13 compared with the CEC value of the existing boron-mud soil conditioner applied on the market, is increased by 0.3 compared with the CEC value of the soil applied by the conventional method, and is increased by 0.2 compared with the soil applied by fine soil; compared with the existing boron mud soil conditioner in the market, the CEC value of the boron-magnesium-calcium soil conditioner applied in 2019 is increased by 0.1, the CEC value of the boron-magnesium-calcium soil conditioner is increased by 0.32 compared with the CEC value of the conventional fertilization soil, and the CEC value of the boron-magnesium-calcium soil conditioner is increased by 0.21 compared with the application of fine soil. Therefore, it can be demonstrated that the application of the boron-magnesium-calcium soil conditioner has a significant effect of improving the CEC value of the soil.
TABLE 3 Effect of different test treatments on tomato fertility traits
The results of two-year continuous tests show that compared with the prior boron mud soil conditioner treatment in the market, the boron-magnesium-calcium soil conditioner applied in 2018 has the advantages that the leaf color is green, the plant height is improved by 1cm, the diameter is increased by 0.02cm, the weight of a single fruit is increased by 3.4g, and the number of the single fruit is increased by 0.4; compared with the conventional fertilization treatment, the leaf color is green, the plant height is improved by 3cm, the diameter is increased by 0.03cm, the weight of a single fruit is increased by 4.1g, and the number of the single fruits is increased by 0.7; compared with fine soil treatment, the boron-magnesium-calcium soil conditioner is applied, the plant height is improved by 2cm, the diameter is increased by 0.02cm, the weight of a single fruit is increased by 2.9g, and the number of single fruits is increased by 0.6; compared with the prior boric sludge soil conditioner treatment in the market, the boric magnesium calcium soil conditioner applied in 2019 has the advantages that the leaf color is green, the plant height is improved by 1cm, the diameter is increased by 0.01cm, the weight of a single fruit is increased by 2.8g, and the number of the single fruit is increased by 0.2; compared with the conventional fertilization treatment, the leaf color is green, the plant height is improved by 7cm, the diameter is increased by 0.05cm, the weight of a single fruit is increased by 6.6g, and the number of the single fruits is increased by 0.4; compared with fine soil treatment, the boron-magnesium-calcium soil conditioner is applied, the plant height is improved by 5cm, the diameter is increased by 0.04cm, the weight of a single fruit is increased by 5.1g, and the number of the single fruits is increased by 0.3; therefore, the application of the boron-magnesium-calcium soil conditioner can promote the growth and development of the tomatoes and improve the fruit quality.
TABLE 4 Effect of different test treatments on tomato yield
The continuous two-year test result shows that compared with the application of the boron-magnesium-calcium soil conditioner in the market, the application of the boron-magnesium-calcium soil conditioner in 2018 increases the yield of the tomatoes subjected to conventional fertilization by 534kg and increases the yield by 423kg compared with the application of fine soil, and the yield increases are respectively 6.58%, 5.14% and 4.51%; compared with the conventional fertilization treatment of the tomatoes, the yield of the boron-magnesium-calcium soil conditioner applied in 2019 is increased by 544kg, the yield of the boron-magnesium-calcium soil conditioner is increased by 421kg, and the yield of the boron-magnesium-calcium soil conditioner applied in 2019 is respectively 6.79%, 5.18% and 2.6%.
And (4) test conclusion: the physical and chemical properties of the soil are direct evaluation indexes of the soil health degree, and directly influence the growth and development of the tomatoes and the yield is low. The results of this test show that: the application of the boron-magnesium-calcium soil conditioner has the obvious effect of changing the pH value and CEC value of soil, and the application of the boron-magnesium-calcium soil conditioner can increase the plant height, stem thickness, single fruit weight and single plant fruit number of tomatoes and obviously improve the yield of the tomatoes. The application of the boron-magnesium-calcium soil conditioner is proved to improve the physical and chemical properties of the soil, provide necessary trace elements and improve the agronomic characters of the tomatoes so as to obviously increase the yield of the tomatoes.
The above description is only exemplary of the invention, and any modification, equivalent replacement, and improvement made within the spirit and scope of the present invention should be considered within the scope of the present invention.
Claims (9)
1. A boron-magnesium-calcium soil conditioner is characterized in that: according to the mass percentage, the treated boric sludge accounts for 60-80%, the fulvic acid accounts for 10-20%, the chelated zinc accounts for 1-8%, the chelated manganese accounts for 1-5%, and the filling material accounts for 10-20%; wherein the filler can be bentonite, zeolite powder and/or fly ash.
2. The boron-magnesium-calcium soil conditioner according to claim 1, characterized in that, by mass percentage, the treated boric sludge is 60-70%, the fulvic acid is 10-15%, the chelated zinc is 6-8%, the chelated manganese is 4-5%, and the filler is 10-15%; wherein the filler is bentonite.
3. The boron-magnesium-calcium soil conditioner according to claim 1, wherein the treated boron mud is boron mud generated by borax production from boron-magnesium ore by a carbon-alkali method, the boron mud is treated for 5-8 min by acid with the concentration of 40-75%, and then the pH value of the system is adjusted to 6.0-10.0 for later use; wherein the mass ratio of the boric sludge to the acid to the water is 1:1.5-1.8:3-5, and the acid is sulfuric acid or nitric acid.
4. The boron-magnesium-calcium soil conditioner according to claim 2, wherein the chelated zinc or chelated manganese is prepared by mixing organic acid with zinc sulfate and manganese sulfate, mixing with water, mixing, chelating repeatedly until the chelation is completely cooled to normal temperature, and pulverizing for use; the repeated chelation was carried out for 6 to 8 hours at 105 ℃ and 115 ℃ each time.
5. The boron-magnesium-calcium soil conditioner according to claim 4, wherein when the organic acid is chelated with zinc sulfate and manganese sulfate respectively, the mass ratio of the organic acid to the zinc sulfate or the organic acid to the manganese sulfate is 1.5-2.0: 1; the amount of the water accounts for 70-80% of the total mass (the total mass of the organic acid and the zinc sulfate or the organic acid and the manganese sulfate).
6. The boron-magnesium-calcium soil conditioner according to claim 4 or 5, wherein the organic acid is EDTA, amino acid or humic acid.
7. A method for preparing the boron-magnesium-calcium soil conditioner as claimed in claim 1, wherein the components in the conditioner are respectively treated, mixed according to the above proportion, crushed, granulated and air-dried.
8. A method of using the boron-magnesium-calcium soil conditioner of claim 1, wherein the method comprises the following steps: the boron-magnesium-calcium soil conditioner is applied to the farmland and is applied 5-8 days before the crops are planted, and the dosage of the boron-magnesium-calcium soil conditioner is 150 kilograms per mu of land.
9. The method of using a boron-magnesium-calcium soil conditioner according to claim 8, wherein: uniformly spreading the boron-magnesium-calcium soil conditioner on the soil surface, thoroughly and uniformly mixing the soil conditioner with 0-15cm of surface soil through plowing, watering to enable the water content of the soil to reach 20% -35%, and carrying out crop planting after 5-8 days of maintenance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110382521.8A CN113024311A (en) | 2021-04-09 | 2021-04-09 | Boron-magnesium-calcium soil conditioner and preparation method thereof |
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| CN115636709A (en) * | 2022-10-31 | 2023-01-24 | 沈阳化工大学 | Method for producing soil conditioner by using boric acid (sand) industrial by-product |
| CN116410038A (en) * | 2023-04-17 | 2023-07-11 | 嘉施利（平原）化肥有限公司 | Trace element blended fertilizer and preparation and fertilizing methods thereof |
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| CN116410038A (en) * | 2023-04-17 | 2023-07-11 | 嘉施利（平原）化肥有限公司 | Trace element blended fertilizer and preparation and fertilizing methods thereof |
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