Phytoremediation agent for degrading pesticide residues and passivating heavy metals and preparation method thereof
Through a phytorepair agent containing a variety of trace elements and active components of traditional Chinese medicine, the problem of poor degradation of pesticide residues and passivation of heavy metals in the prior art is solved, and high-efficiency and low-cost heavy metal reduction and agricultural residue reduction are achieved. Decomposition improves the safety and quality of agricultural products.
Patent Information
- Application Number
- CN202411398589.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-08
- Publication Date
- 2025-01-10
AI Technical Summary
The prior art has poor results in degrading pesticide residues and passivating heavy metals, with high costs and unstable costs, making it difficult to meet the needs of modern agriculture for environmental protection, efficiency and safety.
A phytorepair agent including selenium methionate, sodium selenite, ferrous sulfate, sodium silicate, zinc sulfate, rare earth nitrate, Chinese medicine active components and tea saponin are prepared by mixing and blending, combining a variety of Trace elements and active components of traditional Chinese medicine promote enzyme activity and chelating peptide synthesis in plants, enhance antiviral and antibacterial ability, and reduce the harm of heavy metals.
Effectively reduce heavy metals and pesticide residues in crops, improve the safety and quality of agricultural products, reduce heavy metal pollution, reduce pesticide use, enhance plant stress resistance, and significantly degrade organochlorine and organophosphorus pesticides through rare earth-amino acid chelating components Remaining.
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Abstract
Description
Technical Field
[0001] The invention relates to the technical field of crop adjuvants, and in particular to a plant repair agent for degrading pesticide residues and passivating heavy metals and a preparation method thereof. Background Art
[0002] With the rapid development of modern agriculture, the yield and quality of crops have been significantly improved, but at the same time, the problems of heavy metal pollution and pesticide residues in the crop growth environment have become increasingly prominent. Heavy metals such as lead, cadmium, and mercury enter crops through soil, water sources, etc., which not only affect their normal growth, but may also cause excessive heavy metal content in agricultural products, posing a potential threat to human health. On the other hand, pesticides, as an important means of preventing and controlling pests and diseases, while ensuring crop yields, also bring about the problem of pesticide residues, affecting the safety and market competitiveness of agricultural products.
[0003] Therefore, passivating heavy metals in crops and degrading pesticide residues are of significant significance, which can improve the safety and quality of agricultural products and protect the health rights and interests of consumers. The traditional heavy metal reduction and control treatment process focuses on the planting soil, and fixes the heavy metals in the planting soil by applying passivation materials such as biological agents or specific ecological fertilizers. However, this method cannot directly play an ideal role in the heavy metals accumulated in crop products. There are many methods for degrading pesticide residues in crops, including physical methods, chemical methods, and biological methods. However, different methods may have technical limitations when dealing with pesticide residues, such as light intensity, high temperature treatment, etc.; in addition, the existing methods also have limitations such as high cost, long cycle, and unstable effect, which makes it difficult to meet the needs of modern agriculture for environmental protection, efficiency, and safety.
[0004] Therefore, how to provide a phytoremediation agent and a preparation method thereof for degrading pesticide residues and passivating heavy metals, and to achieve the reduction and control of heavy metals in crops and the decomposition of pesticide residues at high efficiency and low cost is a difficult problem to be solved urgently in this field. Summary of the invention
[0005] In view of this, the present invention provides a plant remediation agent for degrading pesticide residues and passivating heavy metals and a preparation method thereof, so as to solve the problems that the existing methods for reducing and controlling heavy metals are poor in effect and cannot be passivated at specific stages, and the existing methods for degrading pesticide residues have high technical requirements, high costs, and unstable effects.
[0006] In order to achieve the above object, the present invention adopts the following technical solution:
[0007] A plant repair agent for degrading pesticide residues and passivating heavy metals, comprising the following components in parts by weight:
[0008] 1-5 parts of methionine selenium, 1-3 parts of sodium selenite, 2-5 parts of ferrous sulfate, 1-3 parts of sodium silicate, 3-5 parts of zinc sulfate, 0.01-0.5 parts of rare earth nitrate, 20-50 parts of active components of traditional Chinese medicine, 2-5 parts of tea saponin, and 8-25 parts of amino acids.
[0009] Preferably, the preparation of the active ingredients of traditional Chinese medicine comprises the following steps:
[0010] Extracting and concentrating the Chinese medicine composition to obtain active components of the Chinese medicine;
[0011] The extraction includes water extraction or ethanol heating reflux extraction.
[0012] Preferably, the Chinese medicine composition in the preparation process of the Chinese medicine active components includes Forsythia suspensa, Honeysuckle, Cinnamon bark and Scutellaria baicalensis.
[0013] Preferably, the mass ratio of the Forsythia suspensa, honeysuckle, cinnamon and scutellaria baicalensis is 5-8:1-2:1-2:2-3.
[0014] Preferably, the rare earth nitrate comprises lanthanum nitrate and / or cerium nitrate.
[0015] Preferably, the amino acids include one or more of serine, lysine, cysteine and methionine.
[0016] Preferably, the mass ratio of serine, lysine, cysteine and methionine is 1-2:1-2:3-5:3-5.
[0017] Another object of the present invention is to provide a method for preparing a phytoremediation agent for degrading pesticide residues and passivating heavy metals, comprising the following steps:
[0018] Selenium methionine, sodium selenite, ferrous sulfate, sodium silicate, zinc sulfate, rare earth nitrate, and active components of traditional Chinese medicine are mixed, then blended with amino acids, and finally tea saponin is added to obtain a plant repair agent that degrades pesticide residues and passivates heavy metals.
[0019] It can be seen from the above technical solutions that, compared with the prior art, the present invention has the following beneficial effects:
[0020] 1. The scheme of the present invention involves the addition of multiple trace elements, including selenium, iron, zinc, silicon, etc.; the trace elements added in the present invention can produce antagonistic effects with heavy metal elements, inhibit the transport of heavy metals in plants; heavy metals can also be fixed in non-critical parts such as phloem and xylem of plants to avoid pollution of crop products; in addition, enzyme activity in plants can be promoted, the synthesis of components such as plant chelating peptides can be promoted, and then complexed with heavy metal elements to fix heavy metals and reduce the harm of heavy metals.
[0021] 2. The active components of traditional Chinese medicine added in the present invention can enhance the antiviral and antibacterial capabilities of plants, improve the stress resistance of plants, reduce the amount of pesticides used, and reduce pesticide residues; tea saponin has good surface activity and can improve the stability of the components; it also has the characteristics of reducing the surface tension of the preparation and increasing the adhesion amount, promoting the penetration of effective components, and is beneficial to promoting the absorption of the effective components of the preparation by plants.
[0022] 3. Amino acids can directly combine with heavy metal elements to achieve the reduction and control of heavy metals; they can also chelate with the rare earth component added in the present invention to obtain rare earth-amino acid chelates. The chelated components can achieve the degradation of pesticide residues in plants, and have obvious effects on pesticide residues such as organochlorine and organophosphorus. DETAILED DESCRIPTION
[0023] The present invention provides a plant repair agent for degrading pesticide residues and passivating heavy metals, comprising the following components in parts by weight:
[0024] 1-5 parts of methionine selenium, 1-3 parts of sodium selenite, 2-5 parts of ferrous sulfate, 1-3 parts of sodium silicate, 3-5 parts of zinc sulfate, 0.01-0.5 parts of rare earth nitrate, 20-50 parts of traditional Chinese medicine active ingredients, 2-5 parts of tea saponin, and 8-25 parts of amino acids; preferably, 2-4 parts of methionine selenium, 1.5-2.5 parts of sodium selenite, 3-4 parts of ferrous sulfate, 1.5-2.5 parts of sodium silicate, 3.5-4.5 parts of zinc sulfate, 0.1-0.4 parts of rare earth nitrate, 30-40 parts of traditional Chinese medicine active ingredients, 3-4 parts of tea saponin, and 10-20 parts of amino acids; further preferably, 3 parts of methionine selenium, 2 parts of sodium selenite, 3.5 parts of ferrous sulfate, 2 parts of sodium silicate, 4 parts of zinc sulfate, 0.2-0.3 parts of rare earth nitrate, 35 parts of traditional Chinese medicine active ingredients, 3.5 parts of tea saponin, and 15 parts of amino acids.
[0025] In the present invention, the added selenium methionine and sodium selenite can increase the activity of antioxidant enzymes in crops, improve plant resistance, and enhance the antagonism with heavy metal elements; they can also promote the synthesis of plant chelating peptides, and then complex with heavy metal elements to fix heavy metals.
[0026] Iron can affect the formation of chloroplasts, improve the photosynthetic capacity of plants, and promote the absorption of preparations; it can also inhibit the expression of some heavy metal transporters and form a competitive relationship with heavy metals.
[0027] Zinc can compete with heavy metals for absorption sites. An increase in zinc absorption will reduce the absorption of heavy metals. On the other hand, zinc will also compete with heavy metals on transport proteins. Increasing zinc content can reduce the heavy metal content in plants.
[0028] The addition of silicon is beneficial to increase the leaf area, chlorophyll content and photosynthetic capacity of plants, reduce cell membrane permeability, and thus inhibit the absorption and transport of heavy metals by plants. At the same time, silicon can also fix heavy metal elements in non-critical parts such as xylem and phloem.
[0029] In the present invention, the preparation of the active components of traditional Chinese medicine comprises the following steps:
[0030] The Chinese medicine composition is extracted and concentrated to obtain the active components of the Chinese medicine; the extraction includes water extraction or ethanol heating reflux extraction.
[0031] In the present invention, the mass ratio of the active components of the traditional Chinese medicine to the extract (water or ethanol aqueous solution) during the extraction process is 1:8-10, preferably 1:8.5-9.5, and more preferably 1:9.
[0032] In the present invention, the Chinese medicine composition in the process of preparing the Chinese medicine active components includes Forsythia suspensa, Honeysuckle, Cinnamon bark and Scutellaria baicalensis.
[0033] In the present invention, the mass ratio of Forsythia suspensa, honeysuckle, cinnamon and scutellaria baicalensis is 5-8:1-2:1-2:2-3, preferably 6-7:1.2-1.8:1.2-1.8:2.2-2.8, and more preferably 6.5:1.5:1.5:2.5.
[0034] In the present invention, the active components of the traditional Chinese medicine can achieve the best effect within the ratio disclosed in the present invention.
[0035] In the present invention, the mass ratio of selenium methionine to the traditional Chinese medicine composition is 1-5:5-10, preferably 2-4:6-9, and more preferably 3:8.
[0036] In the present invention, the rare earth nitrate includes lanthanum nitrate and / or cerium nitrate.
[0037] In the present invention, if the amount of tea saponin added is too small, it cannot fully exert its effect, and if the amount of tea saponin added is too large, it may be difficult to apply, resulting in a decrease in the effect.
[0038] In the present invention, the amino acid includes one or more of serine, lysine, cysteine and methionine.
[0039] In the present invention, the mass ratio of serine, lysine, cysteine and methionine is 1-2:1-2:3-5:3-5, preferably 1.2-1.8:1.2-1.8:3.5-4.5:3.5-4.5, and more preferably 1.5:1.5:4:4.
[0040] In the present invention, different amino acids have different effects. Cysteine and methionine can directly bind to heavy metals, while serine and lysine can reduce the content of heavy metals from the perspective of transport.
[0041] It can chelate with the rare earth component.
[0042] The present invention also provides a method for preparing a phytoremediation agent for degrading pesticide residues and passivating heavy metals, comprising the following steps:
[0043] Selenium methionine, sodium selenite, ferrous sulfate, sodium silicate, zinc sulfate, rare earth nitrate, and active components of traditional Chinese medicine are mixed, then blended with amino acids, and finally tea saponin is added to obtain a plant repair agent that degrades pesticide residues and passivates heavy metals.
[0044] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0045] Example 1
[0046] Weigh 4 parts of methionine selenium, 2 parts of sodium selenite, 4 parts of ferrous sulfate, 2 parts of sodium silicate, 3 parts of zinc sulfate, 0.3 parts of lanthanum nitrate, 8 parts of Chinese medicine composition (Forsythia suspensa: Honeysuckle: Cinnamon bark: Scutellaria baicalensis = 6:2:2:2), 5 parts of tea saponin, and 14 parts of amino acids (serine: lysine: cysteine: methionine = 2:2:5:5) for later use.
[0047] The above-mentioned Chinese medicine composition is crushed and mixed, and then 8 parts of the mixture are mixed with 80 parts of ethanol aqueous solution (50wt.%), heated to 90°C and refluxed for extraction for 3h to obtain an extract, which is evaporated and concentrated to obtain the active component of the Chinese medicine (concentrated to 40 parts).
[0048] The above-mentioned methionine selenium, sodium selenite, ferrous sulfate, sodium silicate, zinc sulfate, lanthanum nitrate and traditional Chinese medicine active components are fully mixed to obtain a mixed solution; the mixed solution is then blended with amino acids, and finally tea saponin is added to encapsulate to obtain a plant repair agent that degrades pesticide residues and passivates heavy metals.
[0049] Example 2
[0050] Weigh 2 parts of methionine selenium, 2 parts of sodium selenite, 5 parts of ferrous sulfate, 3 parts of sodium silicate, 5 parts of zinc sulfate, 0.1 parts of lanthanum nitrate, 5 parts of Chinese medicine composition (Forsythia suspensa: Honeysuckle: Cinnamon bark: Scutellaria baicalensis = 8:1:1:2), 3 parts of tea saponin, and 11 parts of amino acids (serine: lysine: cysteine: methionine = 1:2:3:5) for later use.
[0051] The extraction operation was the same as in Example 1 to obtain 30 portions of active components of traditional Chinese medicine.
[0052] The above-mentioned methionine selenium, sodium selenite, ferrous sulfate, sodium silicate, zinc sulfate, lanthanum nitrate and traditional Chinese medicine active components are fully mixed to obtain a mixed solution; the mixed solution is then blended with amino acids, and finally tea saponin is added to encapsulate to obtain a plant repair agent that degrades pesticide residues and passivates heavy metals.
[0053] Example 3
[0054] Weigh 5 parts of methionine selenium, 1 part of sodium selenite, 2 parts of ferrous sulfate, 2 parts of sodium silicate, 3 parts of zinc sulfate, 0.05 parts of lanthanum nitrate, 10 parts of Chinese medicine composition (Forsythia suspensa: Honeysuckle: Cinnamon bark: Scutellaria baicalensis = 8:2:1:3), 3 parts of tea saponin, and 24 parts of amino acids (serine: lysine: cysteine: methionine = 1:1:3:3) for later use.
[0055] The extraction operation was the same as in Example 1 to obtain 50 portions of active components of traditional Chinese medicine.
[0056] The above-mentioned methionine selenium, sodium selenite, ferrous sulfate, sodium silicate, zinc sulfate, lanthanum nitrate and traditional Chinese medicine active components are fully mixed to obtain a mixed solution; the mixed solution is then blended with amino acids, and finally tea saponin is added to encapsulate to obtain a plant repair agent that degrades pesticide residues and passivates heavy metals.
[0057] Example 4
[0058] Weigh 3 parts of methionine selenium, 2 parts of sodium selenite, 3 parts of ferrous sulfate, 1 part of sodium silicate, 5 parts of zinc sulfate, 0.5 parts of cerium nitrate, 10 parts of Chinese medicine composition (Forsythia suspensa: Honeysuckle: Cinnamon bark: Scutellaria baicalensis = 5:1:1:3), 5 parts of tea saponin, and 22 parts of amino acids (serine: lysine: cysteine: methionine = 1:1:4:5) for later use.
[0059] The above Chinese medicine composition was crushed and mixed, and then 10 parts of the mixture were mixed with 80 parts of aqueous solution, boiled at 80°C for 20 minutes, filtered to obtain an extract, and concentrated to obtain the active components of the Chinese medicine (concentrated to 35 parts).
[0060] The above-mentioned methionine selenium, sodium selenite, ferrous sulfate, sodium silicate, zinc sulfate, cerium nitrate and traditional Chinese medicine active components are fully mixed to obtain a mixed solution; the mixed solution is then blended with amino acids, and finally tea saponin is added to encapsulate to obtain a plant repair agent that degrades pesticide residues and passivates heavy metals.
[0061] Experimental Example 1
[0062] A 2.5-mu rice field without industrial pollution (far away from factories and roads) was set up, of which experimental fields 1 to 4 were 0.5 mu each and the comparison field was 0.5 mu.
[0063] Fertilization: Conventional fertilization.
[0064] Pesticides: in the seedling bed stage - oxadipamide, in the greening and tillering stage - thiamethoxam, in the jointing stage - dichlorvos, in the heading stage - ethoxyfen.
[0065] The test fields 1 to 4 were sprayed with a phytoremediation agent for degrading pesticide residues and passivating heavy metals 24 hours after each application of pesticides. The application amount of the phytoremediation agent for degrading pesticide residues and passivating heavy metals in each test field was 500 g / mu. The application method was: the phytoremediation agent for degrading pesticide residues and passivating heavy metals was mixed with water and sprayed until water just dripped from the leaves (the test fields 1 to 4 were respectively applied with the preparations prepared in Examples 1 to 4); the control field was sprayed with an equal amount of water as a comparison.
[0066] Samples were collected from the mature rice in the experimental fields 1 to 4 and the control field, respectively, and the heavy metal contents were tested. The test results are shown in Table 1.
[0067] Cadmium, arsenic, lead: SN / T0448-2011; chromium: DB53 / T288-2009; mercury: GR5009.17-2021.
[0068] Table 1 Heavy metal detection results
[0069]
[0070]
[0071] Table 1 shows that after applying the phytoremediation agent for degrading pesticide residues and passivating heavy metals prepared in the embodiment of the present invention, the heavy metal content is greatly reduced, indicating that the heavy metals can be effectively passivated and the transport of heavy metals can be inhibited, thereby reducing the heavy metal content. Compared with the comparative example, the present invention significantly improves the quality of rice.
[0072] The samples were collected as above and recorded as Examples 1 to 4 and Comparative Examples, and the pesticide residues were tested. The pesticide residue reduction rate = (pesticide residue in the comparative example - pesticide residue in the example) / pesticide residue in the comparative example × 100%. The pesticide residue reduction rate of Example 1 was calculated to be 68.5%, Example 2 was 62.3%, Example 3 was 60.8%, and Example 4 was 65.5%. Through analysis, it was found that the examples of the present invention greatly reduced the pesticide residue content. And in the experiment, it was found that the stress resistance of the example group was significantly improved.
[0073] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.
[0074] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A phytoremediation agent for degrading pesticide residues and passivating heavy metals, characterized in that: The composition includes the following components in parts by weight: 1-5 parts of methionine selenium, 1-3 parts of sodium selenite, 2-5 parts of ferrous sulfate, 1-3 parts of sodium silicate, 3-5 parts of zinc sulfate, 0.01-0.5 parts of rare earth nitrate, 20-50 parts of active components of traditional Chinese medicine, 2-5 parts of tea saponin, and 8-25 parts of amino acids.
2. A phytoremediation agent for degrading pesticide residues and passivating heavy metals according to claim 1, characterized in that: The preparation of the active ingredients of traditional Chinese medicine comprises the following steps: Extracting and concentrating the Chinese medicine composition to obtain active components of the Chinese medicine; The extraction includes water extraction or ethanol heating reflux extraction.
3. A phytoremediation agent for degrading pesticide residues and passivating heavy metals according to claim 2, characterized in that: The Chinese medicine composition in the preparation process of the Chinese medicine active components comprises forsythia, honeysuckle, cinnamon and scutellaria.
4. A phytoremediation agent for degrading pesticide residues and passivating heavy metals according to claim 3, characterized in that: The mass ratio of the forsythia, honeysuckle, cassia bark and scutellaria baicalensis is 5-8:1-2:1-2:2-3.
5. A phytoremediation agent for degrading pesticide residues and passivating heavy metals according to claim 4, characterized in that: The rare earth nitrate includes lanthanum nitrate and / or cerium nitrate.
6. A phytoremediation agent for degrading pesticide residues and passivating heavy metals according to claim 5, characterized in that: The amino acids include one or more of serine, lysine, cysteine and methionine.
7. A phytoremediation agent for degrading pesticide residues and passivating heavy metals according to claim 6, characterized in that: The mass ratio of serine, lysine, cysteine and methionine is 1-2:1-2:3-5:3-5.
8. The method for preparing the phytoremediation agent for degrading pesticide residues and passivating heavy metals according to any one of claims 1 to 7, characterized in that: The steps include: Selenium methionine, sodium selenite, ferrous sulfate, sodium silicate, zinc sulfate, rare earth nitrate, and active components of traditional Chinese medicine are mixed, then blended with amino acids, and finally tea saponin is added to obtain a plant repair agent that degrades pesticide residues and passivates heavy metals.