CN116813410A - Crop root system nutrient absorption growth promoter and preparation method and application thereof - Google Patents
Crop root system nutrient absorption growth promoter and preparation method and application thereof Download PDFInfo
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- YVNQAIFQFWTPLQ-UHFFFAOYSA-O [4-[[4-(4-ethoxyanilino)phenyl]-[4-[ethyl-[(3-sulfophenyl)methyl]amino]-2-methylphenyl]methylidene]-3-methylcyclohexa-2,5-dien-1-ylidene]-ethyl-[(3-sulfophenyl)methyl]azanium Chemical compound C1=CC(OCC)=CC=C1NC1=CC=C(C(=C2C(=CC(C=C2)=[N+](CC)CC=2C=C(C=CC=2)S(O)(=O)=O)C)C=2C(=CC(=CC=2)N(CC)CC=2C=C(C=CC=2)S(O)(=O)=O)C)C=C1 YVNQAIFQFWTPLQ-UHFFFAOYSA-O 0.000 description 1
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Abstract
The invention relates to the technical field of agriculture, and provides a crop root nutrient absorption growth promoter, a preparation method and application thereof, wherein the crop root nutrient absorption growth promoter comprises the following components in parts by weight: 25-40 parts of modified red mud, 20-32 parts of composite microorganism bacteria, 10-15 parts of composite amino acid salt and 5-10 parts of humic acid, wherein the modified red mud is obtained by acid washing of red mud and then modification of polysuccinimide and carboxymethyl chitosan. By the technical scheme, the problems that nutrients in the fertilizer in the related technology are less absorbed by crop roots and the utilization rate is low are solved.
Description
Technical Field
The invention relates to the technical field of agriculture, in particular to a crop root nutrient absorption growth promoter, a preparation method and application thereof.
Background
In the growth of crops, the growth of root systems is a key foundation, and the root systems are important organs and places for crops to absorb moisture and nutrients from soil to synthesize various substances so as to influence the yield of the crops, so that the quality of the growth of the crops often depends on the growth of the root systems of the crops, and the growth of the root systems in the seedling stage is promoted, so that the growth of the root systems is a key foundation for the robust growth of the crops and the key for improving the yield of the crops.
The growth of the root system of the crop is influenced by the water and fertilizer conditions, namely the water and fertilizer properties of the root, the water is sufficient, the nutrient content in the fertilizer is high, and the root system of the crop grows well. In the actual crop planting process, the nutrient content in the fertilizer is often high, but the nutrient content can be absorbed by the crop root system relatively less, so that the effect of the nutrient in the fertilizer can not be fully exerted, and the utilization rate is low, therefore, the research on a crop root system nutrient absorption growth promoter for promoting the crop root system to absorb the nutrient in the fertilizer is extremely necessary.
Disclosure of Invention
The invention provides a crop root system nutrient absorption growth promoter, a preparation method and application thereof, and solves the problems of less absorption of nutrient substances by crop root systems and low utilization rate in the fertilizer in the related technology.
The technical scheme of the invention is as follows:
the crop root system nutrient absorption growth promoter comprises the following components in parts by weight:
25-40 parts of modified red mud, 20-32 parts of composite microorganism bacteria, 10-15 parts of composite amino acid salt and 5-10 parts of humic acid.
The modified red mud is obtained by acid washing red mud and then modifying the red mud with polysuccinimide and carboxymethyl chitosan.
As a further technical scheme, the compound microbial agent is a combination of two or three of arbuscular mycorrhizal fungi of vesicular, streptomyces microflavus and bacillus laterosporus.
As a further technical scheme, the compound microbial agent is mixed bacteria of arbuscular mycorrhizal fungi of vesicular, streptomyces microflavus and bacillus laterosporus in a mass ratio of 1:2:1.
As a further technical scheme, the compound amino acid salt is a compound of L-sodium methionine and potassium aspartate with a mass ratio of 1:3-4.
As a further technical scheme, the preparation method of the modified red mud comprises the following steps:
s1, dehydrating, roasting and activating red mud to obtain activated red mud;
s2, acidizing the activated red mud with organic acid to obtain acidified red mud;
s3, dissolving carboxymethyl chitosan in water, adding glutaraldehyde and polysuccinimide, and reacting at 60-80 ℃ to obtain a mixed solution;
s4, soaking the acidified red mud in the mixed solution, and drying to obtain the modified red mud.
As a further technical scheme, in the step S1, the baking temperature is 200-300 ℃.
As a further technical scheme, in step S2, the organic acid is citric acid or oxalic acid.
As a further technical scheme, in the step S3, the mass ratio of the carboxymethyl chitosan to glutaraldehyde and polysuccinimide is 10:1:5.
The invention also provides a preparation method of the crop root system nutrient absorption growth promoter, which comprises the steps of uniformly mixing the modified red mud, the compound amino acid salt and the humic acid, grinding to obtain mixed powder, and uniformly mixing the mixed powder with the compound microorganism bacteria to obtain the crop root system nutrient absorption growth promoter.
The invention also provides a humic acid-containing water-soluble fertilizer, which comprises the crop root nutrient absorption growth promoter or the crop root nutrient absorption growth promoter prepared by the preparation method, and further comprises a nitrogen-phosphorus-potassium fertilizer.
As a further technical scheme, the content of the nitrogen, phosphorus and potassium fertilizer in the humic acid-containing water-soluble fertilizer is more than or equal to 20% by weight.
The working principle and the beneficial effects of the invention are as follows:
1. according to the invention, modified red mud is added into the root system nutrient absorption promoter, the surface of the red mud activated by organic acid is provided with carboxyl groups, and the carboxyl groups are combined with amino groups in polysuccinimide and carboxymethyl chitosan through hydrogen bonding, so that the water retention property of the red mud is improved, the prepared root system nutrient absorption promoter has good water retention capacity, sufficient moisture is provided for the growth of crop roots, the enrichment effect of the red mud on organic matters, N, P and other nutrient elements in soil is remarkably improved, and the growth of crop roots is remarkably improved, and the crop yield and crop quality are further improved.
2. According to the invention, the compound microorganism bacteria with the mass ratio of 1:2:1 of the arbuscular mycorrhizal fungi of the vesicular, the streptomyces microflora and the bacillus laterosporus are added into the root system nutrient absorption promoter, and the compound microorganism bacteria and the modified red mud act synergistically to promote the absorption of N, P and other nutrient elements of the root system of the crop, so that the growth of the root system of the crop is further promoted.
3. The root system nutrient absorption growth promoter is applied to humic acid-containing water-soluble fertilizer, and the humic acid-containing water-soluble fertilizer is suitable for crops such as various fruits, vegetables, leaves, fruits, vegetables, rhizomes and the like, so that the crops can be promoted to root rapidly, plants are more robust, flowers and fruits can be protected, and the crop yield and the fruit quality are improved.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Preparing modified red mud: dehydrating the red mud to 30% of water content, and roasting and activating the red mud at 200 ℃ to obtain activated red mud; acidizing the activated red mud with citric acid to obtain acidified red mud; 10g of carboxymethyl chitosan is dissolved in 500mL of water, 1g of glutaraldehyde and 5g of polysuccinimide are added, and the mixture is reacted for 1h at 60 ℃ to obtain a mixed solution; and soaking the acidified red mud in the mixed solution, and drying to obtain the modified red mud.
Preparing a crop root system nutrient absorption growth promoter: according to the weight portions, 25 portions of modified red mud, 20 portions of compound microorganism bacteria (wherein 5 portions of vesicular arbuscular mycorrhizal fungi, 10 portions of streptomyces microflavus and 5 portions of bacillus laterosporus), 10 portions of compound amino acid salt (wherein 2.5 portions of L-sodium methionine and 7.5 portions of aspartic acid) and 5 portions of humic acid are weighed, the modified red mud, the compound amino acid salt and the humic acid are uniformly mixed and then are ground and then are sieved by a 200-mesh sieve to obtain mixed powder, and the mixed powder and the compound microorganism bacteria are uniformly mixed to obtain the crop root nutrient absorption promoter.
Example 2
Preparing modified red mud: dehydrating the red mud to 30% of water content, and roasting and activating the red mud at 300 ℃ to obtain activated red mud; acidizing the activated red mud with citric acid to obtain acidified red mud; 10g of carboxymethyl chitosan is dissolved in 500mL of water, 1g of glutaraldehyde and 5g of polysuccinimide are added, and the mixture is reacted for 1h at 60 ℃ to obtain a mixed solution; and soaking the acidified red mud in the mixed solution, and drying to obtain the modified red mud.
Preparing a crop root system nutrient absorption growth promoter: 40 parts of modified red mud, 32 parts of compound microorganism bacteria (8 parts of vesicular arbuscular mycorrhizal fungi, 16 parts of streptomyces microflora and 8 parts of bacillus laterosporus), 15 parts of compound amino acid salt (3 parts of L-sodium methionine and 12 parts of aspartic acid) and 10 parts of humic acid are weighed according to parts by weight, the modified red mud, the compound amino acid salt and the humic acid are uniformly mixed and then are ground and then are sieved by a 200-mesh sieve, mixed powder is obtained, and the mixed powder and the compound microorganism bacteria are uniformly mixed, so that the crop root nutrient absorption growth promoter is obtained.
Example 3
Preparing modified red mud: dehydrating the red mud to 30% of water content, and roasting and activating the red mud at 200 ℃ to obtain activated red mud; acidizing the activated red mud with citric acid to obtain acidified red mud; 10g of carboxymethyl chitosan is dissolved in 500mL of water, 1g of glutaraldehyde and 5g of polysuccinimide are added, and the mixture is reacted for 1h at 60 ℃ to obtain a mixed solution; and soaking the acidified red mud in the mixed solution, and drying to obtain the modified red mud.
Preparing a crop root system nutrient absorption growth promoter: according to the weight portions, 30 portions of modified red mud, 28 portions of compound microorganism bacteria (7 portions of vesicular arbuscular mycorrhizal fungi, 14 portions of streptomyces microflora and 7 portions of bacillus laterosporus), 12 portions of compound amino acid salt (3 portions of L-sodium methionine and 9 portions of aspartic acid) and 8 portions of humic acid are weighed, the modified red mud, the compound amino acid salt and the humic acid are uniformly mixed and then are ground and then are sieved by a 200-mesh sieve, mixed powder is obtained, and the mixed powder and the compound microorganism bacteria are uniformly mixed, so that the crop root nutrient absorption growth promoter is obtained.
Example 4
Preparing modified red mud: dehydrating the red mud to 30% of water content, and roasting and activating the red mud at 200 ℃ to obtain activated red mud; acidizing the activated red mud with citric acid to obtain acidified red mud; 10g of carboxymethyl chitosan is dissolved in 500mL of water, 1g of glutaraldehyde and 5g of polysuccinimide are added, and the mixture is reacted for 1h at 60 ℃ to obtain a mixed solution; and soaking the acidified red mud in the mixed solution, and drying to obtain the modified red mud.
Preparing a crop root system nutrient absorption growth promoter: according to the weight portions, 25 portions of modified red mud, 20 portions of compound microorganism bacteria (6.6 portions of vesicular arbuscular mycorrhizal fungi and 13.4 portions of streptomyces microflavus), 10 portions of compound amino acid salt (2.5 portions of L-sodium methionine and 7.5 portions of aspartic acid) and 5 portions of humic acid are weighed, the modified red mud, the compound amino acid salt and the humic acid are uniformly mixed and then are ground and then are sieved by a 200-mesh sieve, mixed powder is obtained, and the mixed powder and the compound microorganism bacteria are uniformly mixed, so that the crop root system nutrient absorption growth promoter is obtained.
Example 5
Preparing modified red mud: dehydrating the red mud to 30% of water content, and roasting and activating the red mud at 200 ℃ to obtain activated red mud; acidizing the activated red mud with citric acid to obtain acidified red mud; 10g of carboxymethyl chitosan is dissolved in 500mL of water, 1g of glutaraldehyde and 5g of polysuccinimide are added, and the mixture is reacted for 1h at 60 ℃ to obtain a mixed solution; and soaking the acidified red mud in the mixed solution, and drying to obtain the modified red mud.
Preparing a crop root system nutrient absorption growth promoter: according to the weight portions, 25 portions of modified red mud, 20 portions of compound microorganism bacteria (13.4 portions of streptomyces microflavus and 6.6 portions of bacillus laterosporus), 10-15 portions of compound amino acid salt (2.5 portions of L-sodium methionine and 7.5 portions of aspartic acid) and 5 portions of humic acid are weighed, the modified red mud, the compound amino acid salt and the humic acid are uniformly mixed and then are ground and then are sieved by a 200-mesh sieve, mixed powder is obtained, and the mixed powder and the compound microorganism bacteria are uniformly mixed, so that the crop root system nutrient absorption growth promoter is obtained.
Example 6
Preparing modified red mud: dehydrating the red mud to 30% of water content, and roasting and activating the red mud at 200 ℃ to obtain activated red mud; acidizing the activated red mud with citric acid to obtain acidified red mud; 10g of carboxymethyl chitosan is dissolved in 500mL of water, 1g of glutaraldehyde and 5g of polysuccinimide are added, and the mixture is reacted for 1h at 60 ℃ to obtain a mixed solution; and soaking the acidified red mud in the mixed solution, and drying to obtain the modified red mud.
Preparing a crop root system nutrient absorption growth promoter: according to the weight portions, 25 portions of modified red mud, 20 portions of compound microorganism bacteria (10 portions of vesicular arbuscular mycorrhizal fungi and 10 portions of bacillus laterosporus), 10-15 portions of compound amino acid salt (2.5 portions of L-sodium methionine and 7.5 portions of aspartic acid) and 5 portions of humic acid are weighed, the modified red mud, the compound amino acid salt and the humic acid are uniformly mixed and then are ground and then are sieved by a 200-mesh sieve, mixed powder is obtained, and the mixed powder and the compound microorganism bacteria are uniformly mixed, so that the crop root system nutrient absorption growth promoter is obtained.
Example 7
The only difference from example 1 is that the modified red mud is prepared as follows: preparing modified red mud: dehydrating the red mud to 30% of water content, and roasting and activating the red mud at 200 ℃ to obtain activated red mud; acidizing the activated red mud with citric acid to obtain acidified red mud; dissolving 10g of carboxymethyl chitosan in 500mL of water, adding 5g of polysuccinimide, and uniformly mixing to obtain a mixed solution; and soaking the acidified red mud in the mixed solution, and drying to obtain the modified red mud.
Example 8
The only difference from example 1 is that the modified red mud is prepared as follows: preparing modified red mud: dehydrating the red mud to 30% of water content, and roasting and activating the red mud at 200 ℃ to obtain activated red mud; acidizing the activated red mud with hydrochloric acid to obtain acidified red mud; 10g of carboxymethyl chitosan is dissolved in 500mL of water, 1g of glutaraldehyde and 5g of polysuccinimide are added, and the mixture is reacted for 1h at 60 ℃ to obtain a mixed solution; and soaking the acidified red mud in the mixed solution, and drying to obtain the modified red mud.
Comparative example 1
The only difference from example 1 is that the modified red mud is prepared as follows: preparing modified red mud: dehydrating the red mud to 30% of water content, roasting and activating at 200 ℃ to obtain activated red mud, and acidizing the activated red mud with citric acid to obtain modified red mud.
Comparative example 2
The only difference from example 1 is that the modified red mud is prepared as follows: preparing modified red mud: dehydrating red mud to a water content of 30%, roasting and activating at 200 ℃ to obtain activated red mud, acidizing the activated red mud with citric acid to obtain acidified red mud, and dissolving 5g of polysuccinimide in 500mL of water to obtain polysuccinimide solution; and soaking the acidified red mud in polysuccinimide solution, and drying to obtain the modified red mud.
Comparative example 3
The only difference from example 1 is that the modified red mud is prepared as follows: preparing modified red mud: dehydrating the red mud to 30% of water content, and roasting and activating the red mud at 200 ℃ to obtain activated red mud; acidizing the activated red mud with citric acid to obtain acidified red mud; 10g of carboxymethyl chitosan is dissolved in 500mL of water to obtain carboxymethyl chitosan aqueous solution, and the acidified red mud is soaked in carboxymethyl chitosan aqueous solution and then dried to obtain the modified red mud.
The crop root system nutrient absorption growth promoters of the examples 1-8 and the comparative examples 1-3 are respectively mixed with nitrogen, phosphorus and potassium fertilizers according to the mass ratio of 3:1 to prepare humic acid-containing water-soluble fertilizers; n, P in nitrogen-phosphorus-potassium fertilizer 2 O 3 And K 2 The mass ratio of O is 8:2:10.
The application method comprises the following steps: adding water into humic acid-containing water-soluble fertilizer, stirring uniformly, and then carrying out water-based flushing application, wherein the application amount is 4-6 kg/mu each time when the humic acid-containing water-soluble fertilizer is applied to fruit and stem, rhizome and fruit and vegetable crops; when the fertilizer is used for leaf vegetable crops, the application amount is 2-3 kg/mu each time.
And (3) spraying the prepared humic acid-containing water-soluble fertilizer to perform potting fertilizer efficiency experiments on the cabbages, wherein nitrogen, phosphorus and potassium fertilizers are used as comparison, 3 cabbages of Jingguan No. 1 are planted in each experimental pot, 3 times of repetition are performed in each group, the fertilizer application amount is 5g for each pot, and after one month of planting, the average weight of the cabbages, the content of soluble sugar, the content of vitamin C and the content of soluble protein in the cabbages are measured. The specific detection method comprises the following steps:
vitamin C: detecting the content of vitamin C in the leaves of the cabbages by adopting a 2, 6-dichloro indophenol titration method;
soluble protein: detecting the content of soluble protein in the leaves of the cabbages by adopting a Coomassie brilliant blue G-250 staining method;
soluble sugar: testing the content of soluble sugar in the leaf of the celery cabbage by adopting an anthrone colorimetric method;
the test results are shown in the following table:
TABLE 1 experiment results of cabbage planting
As can be seen from the data in the table above, compared with the control group, the yield of the cabbages is remarkably improved after the humic acid-containing water-soluble fertilizer prepared from the crop root system nutrient absorption growth promoting agents of examples 1-8 is applied, and meanwhile, the contents of vitamin C, soluble protein and soluble sugar in the cabbages are also greatly improved, which means that the yield of the cabbages can be improved and the quality of the cabbages can be improved after the crop root system nutrient absorption growth promoting agent of the invention is applied.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (10)
1. The crop root system nutrient absorption growth promoter is characterized by comprising the following components in parts by weight:
25-40 parts of modified red mud, 20-32 parts of composite microorganism bacteria, 10-15 parts of composite amino acid salt and 5-10 parts of humic acid.
The modified red mud is obtained by acid washing red mud and then modifying the red mud with polysuccinimide and carboxymethyl chitosan.
2. The crop root nutrient absorption growth promoter according to claim 1, wherein the compound microbial agent is a combination of two or three of arbuscular mycorrhizal fungi of vesicular, streptomyces microflavus and bacillus laterosporus.
3. The crop root nutrient absorption growth promoter according to claim 1, wherein the compound microbial agent is mixed bacteria of arbuscular mycorrhizal fungi of vesicular, streptomyces microflavus and bacillus laterosporus in a mass ratio of 1:2:1.
4. The crop root nutrient absorption growth promoter according to claim 1, wherein the compound amino acid salt is a compound of L-sodium methionine and potassium aspartate with a mass ratio of 1:3-4.
5. The crop root nutrient absorption growth promoter according to claim 1, wherein the preparation method of the modified red mud comprises the following steps:
s1, dehydrating, roasting and activating red mud to obtain activated red mud;
s2, acidizing the activated red mud with organic acid to obtain acidified red mud;
s3, dissolving carboxymethyl chitosan in water, adding glutaraldehyde and polysuccinimide, and reacting at 60-80 ℃ to obtain a mixed solution;
s4, soaking the acidified red mud in the mixed solution, and drying to obtain the modified red mud.
6. The crop root nutrient absorption growth promoter as claimed in claim 5, wherein in step S1, the roasting temperature is 200-300 ℃.
7. The crop root nutrient absorption growth promoter according to claim 5, wherein in step S2, the organic acid is citric acid or oxalic acid.
8. The application of a crop root system nutrient absorption growth promoter according to claim 5, wherein in the step S3, the mass ratio of the carboxymethyl chitosan to glutaraldehyde and polysuccinimide is 10:1:5.
9. The method for preparing a crop root system nutrient absorption growth promoter according to any one of claims 1 to 8, wherein modified red mud, compound amino acid salt and humic acid are uniformly mixed and then ground to obtain mixed powder, and the mixed powder is uniformly mixed with compound microorganism bacteria to obtain the crop root system nutrient absorption growth promoter.
10. A humic acid-containing water-soluble fertilizer, which is characterized by comprising the crop root system nutrient absorption growth promoter according to any one of claims 1-8 or the crop root system nutrient absorption growth promoter prepared by the preparation method according to claim 9, and further comprising nitrogen, phosphorus and potassium fertilizers.
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