CN114316998A - Saline-alkali soil conditioner and preparation method thereof - Google Patents
Saline-alkali soil conditioner and preparation method thereof Download PDFInfo
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Abstract
The application relates to the technical field of soil improvement, in particular to a saline-alkali soil conditioner and a preparation method thereof. A saline-alkali soil conditioner comprises the following raw materials in parts by weight: 24-45 parts of regulator, 15-35 parts of auxiliary agent, 10-27 parts of microbial fermentation agent, 1-5 parts of straw, 1-5 parts of cow dung and 35-50 parts of water; the regulator comprises 20-35 parts of desulfurized gypsum and 4-10 parts of aluminum silicate; the auxiliary agent comprises 10-20 parts of palmitic acid and 5-15 parts of stearic acid; the regulator is embedded in the adjuvant to form microspheres. The modifier is used in saline-alkali soil, part of the auxiliary agent and the regulator are dissolved on the ground surface, the saline-alkali soil is modified, part of the auxiliary agent and the regulator flow into pores of the subsurface soil along with water, and salt return is hindered when the surface water is evaporated and the salt is strongly returned.
Description
Technical Field
The application relates to the technical field of soil conditioners, in particular to a saline-alkali soil conditioner and a preparation method thereof.
Background
Saline-alkali soil is generally composed of saline-alkali soil, which is a general term for saline soil and alkaline earth. The saline soil mainly refers to saline soil with high chloride or sulfate content, and the soil is alkaline but not necessarily high in pH value. The alkaline earth refers to the soil containing carbonate or heavy phosphate, the pH value is higher, and the soil is alkaline. The saline-alkali soil has the advantages of low organic matter content, low soil fertility, poor physical and chemical properties, more anions and cations harmful to crops and difficult seedling promotion of the crops.
The existing method for improving saline-alkali soil comprises the following steps: physical improvements, such as the soil-penetrating method; hydraulic improvement methods such as irrigation salt washing; biological improvement, such as planting salt-tolerant green manure, pasture and the like; chemical improvement, mainly uses chemical substances to increase the saline-alkali soil so as to improve the soil quality of the saline-alkali soil. Wherein the chemical improvement is in the treatment of saline-alkali soil, and the treatment has quick effect and low cost.
In view of the above-mentioned related technologies, the inventor believes that after the chemical modifier is used, the saline-alkali soil is improved well in the initial stage, however, since the surface water in the next spring evaporates strongly, the salt in the groundwater is gathered on the surface layer of the soil along with the rise of the capillary water, i.e. the salt is returned, a new saline-alkali soil is formed, and the improvement is needed again, which results in waste of manpower and material resources.
Disclosure of Invention
In order to inhibit the saline-alkali soil salt return and reduce the improvement times, the application provides a saline-alkali soil conditioner and a preparation method thereof.
In a first aspect, the application provides a saline-alkali soil conditioner, which adopts the following technical scheme:
a saline-alkali soil conditioner comprises the following raw materials in parts by weight:
24-45 parts of regulator, 15-35 parts of auxiliary agent, 10-27 parts of microbial fermentation agent, 1-5 parts of straw, 1-5 parts of cow dung and 35-50 parts of water;
the regulator comprises 20-35 parts of desulfurized gypsum and 4-10 parts of aluminum silicate; the auxiliary agent comprises 10-20 parts of palmitic acid and 5-15 parts of stearic acid; the regulator is embedded in the adjuvant to form microspheres.
By adopting the technical scheme, when the modifier is used, the aqueous solution of the palmitic acid in the auxiliary agent is acidic, the alkalinity of the saline-alkali soil is improved, and the pH value of the saline-alkali soil is reduced to a value capable of being planted. The aqueous solution of stearic acid is acidity, and stearic acid increases the regulating power of improver to saline and alkaline land soil pH value, and stearic acid has lubricated effect, and saline and alkaline land soil is harder, and is less between the gap, and when the improver used the earth's surface of saline and alkaline land soil, stearic acid helped making other raw materials such as regulator, microbial fermentation inoculant and straw along with water flow to the subsurface, improved the improvement effect to saline and alkaline land soil subsurface soil.
Palmitic acid and stearic acid in the auxiliary agent are insoluble in water, the regulator is embedded in the auxiliary agent, the modifier is used in the saline-alkali soil, the auxiliary agent is decomposed under an alkaline condition, the regulator is exposed, the regulator reacts with the microbial fermentation inoculant, the straw and the cow dung in the raw materials to modify the saline-alkali soil, and part of the auxiliary agent and the regulator flow into the saline-alkali soil below the ground along with water and enter pores of the saline-alkali soil below the ground. When the surface water of the improved saline-alkali soil is evaporated and strongly back salted, the salt in the underground water flows upwards along with the water and flows through the auxiliary agent and the regulator to decompose the salt in the water and prevent back salting.
In conclusion, the regulator is embedded in the auxiliary agent, and the aqueous solution of palmitic acid and stearic acid in the auxiliary agent is acidic and is insoluble in water. The modifier is used in the saline-alkali soil, part of the auxiliary agent and the regulator are dissolved on the ground surface, the saline-alkali soil is modified, part of the auxiliary agent and the regulator flow into pores of the subsurface soil along with water, and when the surface water is evaporated and the salt is strongly returned, the salt return is blocked, and the modification times are reduced.
Preferably, the modifier comprises the following raw materials, by weight, 30-39 parts of a regulator, 21-31 parts of an auxiliary agent, 13-21 parts of a microbial fermentation inoculant, 2-3 parts of straw, 2-4 parts of cow dung and 40-46 parts of water.
By adopting the technical scheme, the amount of each raw material of the modifier is optimized, so that when the amount of the raw material of the modifier is in the range, the saline-alkali soil improvement effect of the prepared modifier is better, and the effect of blocking salt return is better.
Preferably, the particle size of the desulfurized gypsum is 80-100 meshes, and the particle size of the aluminum silicate is 70-100 meshes.
By adopting the technical scheme, the particle size of the desulfurized gypsum is controlled to be 80-100 meshes, the particle size of the aluminum silicate is controlled to be 70-100 meshes, and the modifying agent is easy to uniformly stir when being added with water and stirred in the preparation process and is beneficial to wrapping the modifying agent by the aid.
Preferably, the microbial fermentation inoculant is prepared by mixing bacillus, saccharomycetes and EM (effective microorganisms) in parts by weight, wherein the bacillus, the saccharomycetes and the EM are added in parts by weight of 0.4-1.6 parts by weight of the bacillus, 1-5 parts by weight of the saccharomycetes and 0.6-2.4 parts by weight of the EM.
By adopting the technical scheme, the content of organic substances is increased, and the growth of harmful substances is inhibited.
Preferably, the straw is one or more of corn straw, sorghum straw and potato straw.
By adopting the technical scheme, the straw of the herbaceous plant is decomposed and synthesized to form humic acid.
Preferably, the straws are crushed before use, and the average crushed particle size of the straws is less than or equal to 2 cm.
By adopting the technical scheme, the straws are crushed before use, so that the straws are easy to mix with other substances, and the particle size of the straws enables the straws to remain on the ground surface, thereby better improving the ground surface.
Preferably, the preparation steps of the microspheres are as follows:
t1: dissolving 21-31 parts by weight of an auxiliary agent in 20-35 parts by weight of diethyl ether, uniformly mixing with 30-39 parts by weight of a regulator to obtain a dispersion liquid, and carrying out spray drying on the dispersion liquid to prepare the microspheres.
By adopting the technical scheme, when the modifier is used, the auxiliary agent in the microspheres is contacted with alkali, the auxiliary agent is decomposed to expose the modifier, the saline-alkali soil is improved, the decomposition speed of the modifier is reduced by the microspheres, the content of the soil in the pores of the microspheres is increased, and the effect of preventing salt return is improved.
In a second aspect, the application provides a preparation method of a saline-alkali soil conditioner, which adopts the following technical scheme: a preparation method of a saline-alkali soil conditioner comprises the following steps:
s1: adding the microspheres into water, and stirring at room temperature for 30-50s to obtain a mixture A;
s2: and adding the microbial fermentation inoculum, the straw and the cow dung into the mixture A obtained in the step S1, and uniformly stirring to obtain the saline-alkali soil conditioner.
By adopting the technical scheme, after the modifier is used, the microspheres decompose and modify the soil surface of the saline-alkali soil, the undecomposed microspheres flow into the pores of the soil along with water, and the microspheres slow down the exposure speed of the modifier. During the salt return, the salt carried by the underground water can be decomposed by the microspheres in the pores, so that the possibility of hindering the salt return is improved.
In summary, the present application has the following beneficial effects:
1. the auxiliary agent and the regulator are embedded in the auxiliary agent, so that the modifier is used in the saline-alkali soil, part of the auxiliary agent and the regulator are dissolved on the surface of the soil, the saline-alkali soil is modified, part of the auxiliary agent and the regulator flow into pores of the subsurface soil along with water, and when the surface water is evaporated and the salt is strongly returned, the salt return is blocked, and the modification times are reduced;
2. the preparation method of the microspheres is adopted, the decomposition speed of the regulator is reduced, the content of the soil entering pores of the microspheres is increased, and the effect of preventing salt return is improved;
3. according to the preparation method of the modifier, undecomposed microspheres enter pores of soil along with water, and during salt return, salt in underground water is decomposed by the microspheres in the pores, so that the exposed speed of the modifier is slowed down by the microspheres, and the effect of preventing salt return is improved.
Detailed Description
The present application will be described in further detail with reference to examples.
Raw materials
The raw materials of the application are all common products sold in the market.
Preparation example
Preparation examples 1 to 3
The preparation of the regulator of examples 1-3, wherein the raw materials and the amounts of the raw materials are shown in Table 1, comprises the following steps:
s1: the particle size of the selected desulfurized gypsum is 90 meshes, the particle size of the selected aluminum silicate is 85 meshes, the raw materials are weighed according to the dosage in the table 1, and then the raw materials are uniformly stirred to obtain the regulator.
TABLE 1 preparation examples 1-3 of the regulators and the amounts (kg) of the respective materials
| Preparation example 1 | Preparation example 2 | Preparation example 3 | |
| Desulfurized gypsum | 20 | 28 | 35 |
| Aluminium silicate | 10 | 7.3 | 4 |
Preparation examples 4 to 6
The preparation of an adjuvant according to preparation examples 4 to 6, with the starting materials and the amounts of the starting materials indicated in Table 2, was carried out as follows:
the raw materials are weighed according to the dosage in the table 2, and then the raw materials are uniformly stirred to obtain the auxiliary agent.
TABLE 2 preparation of adjuvants of examples 4-6 and amounts (kg) of the respective materials
| Preparation example 4 | Preparation example 5 | Preparation example 6 | |
| Palmitic acid | 10 | 20 | 15.6 |
| Stearic acid | 15 | 11 | 5 |
Preparation examples 7 to 9
The microbial fermentation inoculum of preparation examples 7-9, whose raw materials and amounts are shown in Table 3, was prepared by the following steps: weighing the raw materials according to the dosage in the table 3, and then uniformly stirring the raw materials to obtain the microbial fermentation inoculum.
TABLE 3 preparation of adjuvants of examples 7 to 9 and amounts (kg) of the respective materials
| Preparation example 7 | Preparation example 8 | Preparation example 9 | |
| Bacillus | 2 | 2 | 4.8 |
| Yeast | 5 | 7 | 15 |
| EM (effective microorganisms) bacteria | 3 | 3.3 | 7.2 |
Examples
Examples 1 to 5
The saline-alkali soil conditioner of the embodiments 1 to 5 has the following raw materials and the amounts thereof shown in table 4, and the preparation steps thereof are as follows: s1: adding the microspheres into water, and stirring for 43s at room temperature to obtain a mixture A;
s2: and (3) crushing the straws, adding the crushed straws, the microbial fermentation inoculum and the cow dung into the mixture A obtained in the step S1, uniformly stirring, and stirring to obtain the saline-alkali soil conditioner.
Wherein, the preparation steps of the microsphere are as follows:
t1: dissolving the auxiliary agent into 27kg of diethyl ether, uniformly mixing with the regulator to obtain a dispersion liquid, and carrying out spray drying on the dispersion liquid to prepare the microspheres.
Wherein the average particle size of the crushed straws is 1cm, the regulating agents are from preparation example 3, the auxiliary agents are from preparation example 6, the microbial fermentation inoculum is from preparation example 9, the straws in example 1 are corn straws, the straws in example 2 are sorghum straws, the straws in example 3 are corn straws, sorghum straws and potato straws, the straws in example 4 are corn straws and potato straws, and the straws in example 5 are potato straws.
TABLE 4 materials and amounts (kg) of materials of examples 1-5
| Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | |
| Conditioning agents | 30 | 30 | 30 | 30 | 30 |
| Auxiliary agent | 31 | 31 | 31 | 31 | 31 |
| Microbial fermentation inoculant | 13 | 13 | 13 | 13 | 13 |
| Straw and stalk | 5 | 3 | 2.8 | 2 | 1 |
| Cow dung | 1 | 2 | 3.6 | 4 | 5 |
| Water (W) | 35 | 40 | 43 | 46 | 50 |
Example 6
The saline-alkali soil conditioner is different from the saline-alkali soil conditioner in the embodiment 3 in that the dosage of the added regulator is 36kg, and the rest steps are the same as the embodiment 3.
Example 7
The saline-alkali soil conditioner is different from the saline-alkali soil conditioner in the embodiment 3 in that the dosage of the added regulator is 39kg, and the rest steps are the same as the embodiment 3.
Example 8
The saline-alkali soil conditioner is different from the saline-alkali soil conditioner in the embodiment 6 in that the dosage of the added auxiliary agent is 29kg, and the rest steps are the same as the embodiment 6.
Example 9
The saline-alkali soil conditioner is different from the saline-alkali soil conditioner in the embodiment 6 in that the dosage of the added auxiliary agent is 25kg, and the rest steps are the same as the embodiment 6.
Example 10
The saline-alkali soil conditioner is different from the saline-alkali soil conditioner in the embodiment 6 in that the dosage of the added auxiliary agent is 21kg, and the rest steps are the same as the embodiment 6.
Example 11
The saline-alkali soil conditioner is different from the saline-alkali soil conditioner in the embodiment 9 in that the dosage of the added microbial fermentation inoculant is 18kg, and the rest steps are the same as the embodiment 9.
Example 12
The saline-alkali soil conditioner is different from the saline-alkali soil conditioner in the embodiment 9 in that the dosage of the added microbial fermentation inoculant is 21kg, and the rest steps are the same as the embodiment 9.
Example 13
A saline-alkali soil conditioner is different from that in the embodiment 11 in that the grain diameter of desulfurized gypsum in the conditioner is 80 meshes, and the rest steps are the same as those in the embodiment 11.
Example 14
A saline-alkali soil conditioner is different from that in the embodiment 11 in that the grain diameter of desulfurized gypsum in the conditioner is 100 meshes, and the rest steps are the same as those in the embodiment 11.
Example 15
A saline-alkali soil conditioner is different from that in the embodiment 11 in that the grain diameter of aluminum silicate in the conditioner is 70 meshes, and the rest steps are the same as those in the embodiment 11.
Example 16
A saline-alkali soil conditioner is different from that in the embodiment 11 in that the particle size of aluminum silicate in the conditioner is 100 meshes, and the rest steps are the same as those in the embodiment 11.
Example 17
A saline-alkali soil conditioner is different from that in the embodiment 11 in that the particle size of crushed straws is 2cm, and the rest steps are the same as those in the embodiment 11.
Comparative example
Comparative example 1
A saline-alkali soil conditioner is different from that in the embodiment 11 in that the dosage of the added auxiliary agent is 0, and the rest steps are the same as those in the embodiment 11.
Comparative example 2
The saline-alkali soil conditioner is different from the saline-alkali soil conditioner in the embodiment 11 in that the added auxiliary agent is stearic acid, and the rest steps are the same as the embodiment 11.
Comparative example 3
The saline-alkali soil conditioner is different from the saline-alkali soil conditioner in the embodiment 11 in that the added auxiliary agent is 15.6 parts of palmitic acid, and the rest steps are the same as the embodiment 11.
Comparative example 4
A saline-alkali soil conditioner is different from that in example 11 in that the auxiliary agent is not coated with the conditioner, and the rest steps are the same as those in example 11.
Performance test
Detection method
The following performance tests were performed on the saline-alkali soil conditioners of examples 1 to 17 and comparative examples 1 to 4 of the present application.
Selecting a salinized soil experimental area, wherein the pH value of the soil is 9, the salt content is 1.8g/kg, the organic matter content is 5.47g/kg, the nitrogen content is 0.35g/kg, the potassium content is 19.3g/kg, and the phosphorus content is 11.7g/kg, dividing the salinized soil of the experimental area into 22 areas, each area is 1 mu, 1 area is not improved as blank soil, 17 areas are improved areas, and 4 areas are comparison areas; in the test, 20kg of the modifier is applied to the saline-alkali soil in a base fertilizer mode once per mu, after one year of improvement, the soil property of the treated saline-alkali soil is tested and recorded, and after one year, the saline-alkali performance of the soil in the test area is detected and recorded.
And subtracting the detected data corresponding to the first year from the detected data in the second year, and recording the change condition of the soil performance of the saline-alkali soil, wherein the + represents that the detected data value is increased, and the-represents that the detected data value is decreased. The soil performance test results are shown in table 5.
TABLE 5 test results
| pH of soil | Salt content (g/kg) | Organic matter content (g/kg) | Nitrogen content (g/kg) | Potassium content (g/kg) | Phosphorus content (g/kg) | |
| Blank group | +1 | +0.65 | -2 | -0.5 | -6 | -4 |
| Example 1 | +0.5 | +0.31 | -0.5 | -0.2 | -3.5 | -2.6 |
| Example 2 | +0.47 | +0.32 | -0.53 | -0.21 | -3.1 | -2.4 |
| Example 3 | +0.43 | +0.33 | -0.48 | -0.19 | -3.3 | -2.1 |
| Example 4 | +0.46 | +0.36 | -0.6 | -0.2 | -3.5 | -2.5 |
| Example 5 | +0.44 | +0.3 | -0.7 | -0.28 | -3.4 | -2.3 |
| Example 6 | +0.42 | +0.29 | -0.43 | -0.17 | -2.7 | -1.7 |
| Example 7 | +0.43 | +0.32 | -0.45 | -0.18 | -3.2 | -2 |
| Example 8 | +0.41 | +0.27 | -0.42 | -0.16 | -2.8 | -2.4 |
| Example 9 | +0.39 | +0.26 | -0.4 | -0.13 | -2.3 | -1.6 |
| Example 10 | +0.41 | +0.28 | -0.41 | -0.15 | -2.6 | -1.9 |
| Example 11 | +0.11 | +0.04 | -0.08 | -0.05 | -0.35 | -0.36 |
| Example 12 | +0.2 | +0.1 | -0.2 | -0.09 | -0.6 | -0.7 |
| Example 13 | +0.37 | +0.38 | -0.56 | -0.21 | -2.9 | -2.7 |
| Example 14 | +0.35 | +0.35 | -0.64 | -0.19 | -3.6 | -2.3 |
| Example 15 | +0.4 | +0.29 | -0.43 | -0.18 | -3.4 | -1.9 |
| Example 16 | +0.39 | +0.31 | -0.57 | -0.2 | -3 | -2.2 |
| Example 17 | +0.4 | +0.35 | -0.51 | -0.22 | -3.1 | -2 |
| Comparative example 1 | +0.89 | +0.59 | -1.87 | -0.43 | -5.1 | -3.4 |
| Comparative example 2 | +0.76 | +0.52 | -1.53 | -0.35 | -4.6 | -3.1 |
| Comparative example 3 | +0.71 | +0.54 | -1.45 | -0.37 | -4.4 | -3.2 |
| Comparative example 4 | +0.69 | +0.51 | -1.1 | -0.3 | -4.2 | -3 |
The present application is described in detail below with reference to the test data provided in table 5.
The regulator in the modifier prepared by the application is embedded in the auxiliary agent, when the modifier is used, part of the auxiliary agent is decomposed in an alkaline solution, the regulator is exposed, the surface layer of the saline-alkali soil is improved, the decomposed stearic acid has a lubricating effect, and the undecomposed auxiliary agent and regulator are facilitated to flow into pores in the soil along with water. When the earth surface is strongly evaporated, the salt content of underground water flows along with water, and when the salt content of underground water passes through soil pores, the auxiliary agent and the regulator decompose the salt content in the water, so that salt return is prevented, and the improvement times are reduced.
Examples 1-5 and blank soil it can be seen that after saline-alkali soil is improved for one year, the increase of pH and salt content of the saline-alkali soil in examples 1-5 is less than that of the blank soil, and the decrease of organic content, nitrogen content, potassium content and phosphorus content of the saline-alkali soil in examples 1-5 is less than that of the blank soil.
Examples 1-5 and comparative examples 1-4 show that after the saline-alkali soil is improved for one year, the increase values of the pH value and the salt content of the saline-alkali soil of examples 1-5 are smaller than those of comparative examples 1-4, and the decrease values of the organic content, the nitrogen content, the potassium content and the phosphorus content of the saline-alkali soil of examples 1-5 are smaller than those of comparative examples 1-4.
Compared with the examples 1-5, the conditioner of the comparative example 1 does not contain an auxiliary agent, the pH value of the saline-alkali soil is well adjusted, the saline-alkali soil is hard, gaps are narrow, and the conditioner of the comparative example 1 mainly plays a role in improving the ground surface, so that the conditioner entering soil pores of the comparative example 1 is less, and the effect of hindering the soil salt return is poor.
Compared with examples 1-5, the adjuvant in the comparative example 2 does not contain palmitic acid, and when the modifier is used, the acidity of the aqueous solution of the modifier is weakened, so that the capability of adjusting the pH value of the saline-alkali soil is weakened, and therefore, the modifying effect of the comparative example 2 is poor, and the salt return inhibiting effect is poor.
The adjuvant of comparative example 3 does not contain stearic acid as compared with examples 1 to 5, and the improvement effect of comparative example 3 is poor and the effect of inhibiting salt return is poor because the acidity of the aqueous solution of the improver is weakened and the amount of the improver entering into the soil pores with moisture is small when the improver is used.
Compared with examples 1-5, the adjuvant in comparative example 4 is directly mixed with the modifier, and when the modifier is used, less modifier enters soil pores under the action of stearic acid, so that comparative example 4 has poor effect on soil salt return inhibition.
In conclusion, in examples 1 to 5, the adjuvant coated the regulator to delay the action of the regulator and increase the amount of the regulator entering the soil pores, thereby increasing the effect of inhibiting the salt return of the soil.
In addition to examples 1-5, there were other experimental groups during the development of this application, of which example 3 was the relatively superior group of all experimental groups and was therefore taken out separately.
Compared with the example 3, the examples 6 to 7 examine the influence of different amounts of the regulator on the salt return inhibition effect of the modifier, and according to the detection result, after the saline-alkali soil is improved for one year, the increase values of the pH value and the salt content of the soil in the example 6 are smaller than those in the examples 3 and 7, and the decrease values of the organic content, the nitrogen content, the potassium content and the phosphorus content of the soil in the example 6 are smaller than those in the examples 3 and 7, so that the salt return inhibition effect of the example 6 is better.
Compared with the example 6, the examples 8 to 10 examine the influence of different auxiliary agent dosage on the salt return inhibition effect of the modifying agent, and according to the detection result, after the saline-alkali soil is improved for one year, the pH value and the salt content of the soil in the example 9 are increased less than those in the examples 6, 8 and 10, and the organic content, nitrogen content, potassium content and phosphorus content of the soil in the example 9 are reduced less than those in the examples 6, 8 and 10, so that the salt return inhibition effect of the example 9 is better.
In examples 11 to 17, compared with example 9, the influence of the amount of microbial fermentation inoculum, the particle size of desulfurized gypsum, the particle size of aluminum silicate and the average particle size of crushed straw on the salt return inhibition effect of the modifier is examined, and according to the detection results, after the saline-alkali soil is improved for one year, the increase values of the pH value and the salt content of the soil in example 11 are smaller than those in examples 9 and 12 to 17, and the decrease values of the organic content, the nitrogen content, the potassium content and the phosphorus content of the soil in example 11 are smaller than those in examples 9 and 12 to 17, so that the salt return inhibition effect of example 11 is better.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (8)
1. The saline-alkali soil conditioner is characterized by comprising the following raw materials in parts by weight:
24-45 parts of regulator, 15-35 parts of auxiliary agent, 10-27 parts of microbial fermentation agent, 1-5 parts of straw, 1-5 parts of cow dung and 35-50 parts of water;
the regulator comprises 20-35 parts of desulfurized gypsum and 4-10 parts of aluminum silicate; the auxiliary agent comprises 10-20 parts of palmitic acid and 5-15 parts of stearic acid; the regulator is embedded in the adjuvant to form microspheres.
2. A saline-alkali soil amendment according to claim 1, characterized in that: the fertilizer comprises, by weight, 30-39 parts of a regulator, 21-31 parts of an auxiliary agent, 13-21 parts of a microbial fermentation inoculant, 2-3 parts of straw, 2-4 parts of cow dung and 40-46 parts of water.
3. A saline-alkali soil amendment according to claim 1, characterized in that: the grain size of the desulfurized gypsum is 80-100 meshes, and the grain size of the aluminum silicate is 70-100 meshes.
4. A saline-alkali soil amendment according to claim 1, characterized in that: the microbial fermentation inoculant is prepared by mixing bacillus, saccharomycetes and EM (effective microorganisms) bacteria, wherein the bacillus, the saccharomycetes and the EM bacteria are added in the following parts by weight: 0.4-1.6 parts of bacillus, 1-5 parts of microzyme and 0.6-2.4 parts of EM bacteria.
5. A saline-alkali soil amendment according to claim 1, characterized in that: the straws are one or more of corn straws, sorghum straws and potato straws.
6. A saline-alkali soil amendment according to claim 5, characterized in that: the straws are crushed before use, and the average crushed particle size is less than or equal to 2 cm.
7. The saline-alkali soil amendment according to claim 1, wherein the preparation steps of the microspheres are as follows:
t1: dissolving 21-31 parts by weight of an auxiliary agent in 20-35 parts by weight of diethyl ether, uniformly mixing with 30-39 parts by weight of a regulator to obtain a dispersion liquid, and carrying out spray drying on the dispersion liquid to prepare the microspheres.
8. A method for preparing a saline-alkali soil amendment as claimed in any one of claims 1 to 7, which comprises the following steps:
s1: adding the microspheres into water, and stirring at room temperature for 30-50s to obtain a mixture A;
s2: and adding the microbial fermentation inoculum, the straw and the cow dung into the mixture A obtained in the step S1, and uniformly stirring to obtain the saline-alkali soil conditioner.
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| CN110591720A (en) * | 2019-09-17 | 2019-12-20 | 山东胜伟盐碱地科技有限公司 | Saline-alkali soil conditioner and preparation method thereof |
| CN111574303A (en) * | 2020-05-14 | 2020-08-25 | 天津市方正园林建设监理中心 | Saline-alkali soil modifier and preparation method and use method thereof |
| CN112225608A (en) * | 2020-11-03 | 2021-01-15 | 吉林中农克盐土地整理有限公司 | Saline-alkali soil improver |
-
2021
- 2021-12-23 CN CN202111589762.6A patent/CN114316998A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107760313A (en) * | 2017-10-24 | 2018-03-06 | 潍坊友容实业有限公司 | Saline-alkali land soil conditioner and its production method based on coal-fired flue gas desulfurization gypsum |
| CN108033859A (en) * | 2017-12-28 | 2018-05-15 | 潍坊友容实业有限公司 | One kind improvement salt-soda soil organic fertilizer and preparation method thereof |
| CN108640788A (en) * | 2018-03-29 | 2018-10-12 | 上海金禾天地信息科技有限公司 | A kind of modification method of slight alkaline land |
| CN110591720A (en) * | 2019-09-17 | 2019-12-20 | 山东胜伟盐碱地科技有限公司 | Saline-alkali soil conditioner and preparation method thereof |
| CN111574303A (en) * | 2020-05-14 | 2020-08-25 | 天津市方正园林建设监理中心 | Saline-alkali soil modifier and preparation method and use method thereof |
| CN112225608A (en) * | 2020-11-03 | 2021-01-15 | 吉林中农克盐土地整理有限公司 | Saline-alkali soil improver |
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