Liquid fertilizer prepared by fermenting Chinese herbal medicines and used for preventing and treating citrus huanglongbing

Abstract

The invention discloses a liquid fertilizer prepared by fermenting Chinese herbal medicines and used for preventing and treating citrus huanglongbing, which belongs to the technical field of citrus huanglongbing prevention and treatment and is prepared from the following raw materials: the Chinese herbal medicines, peanut bran, enzyme microorganisms and water, the Chinese herbal medicines comprise the following medicinal materials: felwort, paris polyphylla, radix bupleuri, angelica sinensis, semen cuscutae, honeysuckle, schisandra chinensis, bletilla striata, folium isatidis, radix zanthoxyli, radix isatidis, Chinese mahonia, golden cypress, radix rehmanniae and liquorice. The liquid fertilizer disclosed by the invention has the characteristic of homology of medicine and food after scientific compatibility, can provide required nutrient elements for the growth and development of plant life bodies, and active components contained in the components can generate an effective inhibition effect on the growth, reproduction and propagation of liberobacter asiaticum, so that the liquid fertilizer can be used for preventing and treating the citrus liberobacter asiaticum; active substances, alkaline substances and saponin compounds in the traditional Chinese medicines are complex and stable, so that a long-term effect can be achieved, and the aim of radically treating the citrus huanglongbing is fulfilled.

Description

Technical Field

[0001] The invention belongs to the technical field of citrus Huanglongbing prevention and treatment, and in particular relates to a liquid fertilizer for preventing and treating citrus Huanglongbing made by fermenting Chinese herbal medicines. Background Art

[0002] Citrus Huanglongbing is a disease that is extremely devastating to the citrus industry. Its pathogen is Bacillus phloem, a Gram-negative bacterium. The main transmission routes of Huanglongbing include citrus psyllids and the transportation of diseased seedlings. After sucking the sap of diseased trees, citrus psyllids will then suck the sap of healthy trees, and the pathogen will be transmitted to healthy plants. This field transmission method is extremely efficient.

[0003] Once Huanglongbing occurs, it will cause serious damage to citrus trees in many aspects. The initial symptoms of diseased citrus trees are yellowing of some new shoots and leaves. The types of yellowing include mottled, uniform and nutrient-deficient types. Among them, mottled yellowing is the most typical, and uneven patches of yellow and green will appear on the leaves. As the disease progresses, the diseased trees will have symptoms such as short and weak shoots, smaller and harder leaves, deformed fruits, abnormal coloring, sour taste, and poor quality. The growth of diseased trees gradually weakens, and the yield drops sharply until the whole tree dies. Since there is no specific treatment drug at present, once Huanglongbing breaks out on a large scale in the orchard, it often leads to the death of a large number of citrus trees and the destruction of orchards, which will bring huge economic losses to fruit farmers and seriously affect the sustainable development of the citrus industry. At present, in terms of the prevention and control of citrus Huanglongbing, although there are certain measures in agricultural prevention and control such as strengthening orchard management and timely removal of diseased trees, there is still a lack of efficient, economical and environmentally friendly prevention and control measures for citrus Huanglongbing. Therefore, it is urgent to develop new prevention and control technologies and products. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention discloses a liquid fertilizer for effectively preventing and treating citrus Huanglongbing disease. The liquid fertilizer has an excellent effect of curing citrus ulcers, with an effective rate of more than 85%.

[0005] In order to achieve the above-mentioned purpose, the following technical scheme is adopted: on the one hand, the present invention provides a liquid fertilizer for preventing and controlling citrus Huanglongbing disease made by fermenting Chinese herbal medicine, which is prepared from the following raw materials: Chinese herbal medicine, peanut bran, enzyme bacteria and water; the Chinese herbal medicine includes the following medicinal materials: gentian, seven-leaf parsley, purple bupleurum, angelica, dodder seed, honeysuckle, schisandra, bletilla striata, isatis indigotica, two-sided needle, isatis root, magnolia officinalis, phellodendron, raw rehmannia and licorice.

[0006] Gentian: The main chemical components include gentiopicroside, swertiamarin, gentiana glycoside, trifolioside, gentiopicroside, tetraacetylgentiopicroside, camphora glycoside, gentioflavine, gentianine, gentioside B, gentiocyanate, gentiotriose, and β-sitosterol. It has bactericidal and disinfecting effects, and has varying degrees of inhibitory effects on a variety of pathogens.

[0007] Seven-leaf Polygonum multiflorum: The main chemical components include diosgenin, rhamnopyranosyl, glucopyranoside, diosgenin, dioscin, seven-leaf polygonum multiflorum saponin, diosgenin, and arabinofuranoside, which have strong antibacterial and bactericidal effects.

[0008] Purple Bupleurum: Also known as bamboo-leaf Bupleurum, its stems and leaves contain rutin, quercetin, saponins and volatile oils. Rutin has antiviral effects, quercetin has excellent antibacterial effects on Staphylococcus aureus, saponins have antibacterial activity, and various saponin compounds have strong decontamination ability, which can clean the surface of fruits and leaves, clear foreign matter in plants, dredge the vascular bundles of plants, keep the circulation of plants smooth, enhance the photosynthetic rate of plants, accelerate metabolism, and reduce toxin accumulation.

[0009] Angelica: The chemical components of Angelica are mainly volatile oils, among which ligustilide is the main component of volatile oils. Non-volatile oil components include neoradiol, palmitic acid, folic acid, scopolamine, umbelliferone and choline, the latter three of which are effective anti-inflammatory ingredients. In addition, it also contains a variety of amino acids, vitamins and minerals. Grinding into powder can provide high-quality nutrients for plants.

[0010] Cuscuta: contains alkaloids, anthraquinone, coumarin, flavonoids, glycosides, sterols, tannic acid, sugars, etc. Flavonoids include quercetin, astragaloside, hyperoside; sterols include cholesterol, campesterol, β-sitosterol, stigmasterol, β-amyrin. It also contains trace elements such as strontium, molybdenum, calcium, magnesium, iron, manganese, zinc, copper, etc. and a variety of amino acids (the free amino acids in the seeds and the total amino acids after hydrolysis are 5.3%, of which the content of essential amino acids accounts for 42.8%). Cuscuta contains glycosides and vitamin A substances, and its content is 0.0378% calculated as vitamin A. Soybean Cuscuta contains β-carotene, γ-carotene, 5,6-epoxy-α-carotene, taraxanthin and lutein. Grinding into powder can provide high-quality nutrients for plants.

[0011] Honeysuckle: It contains a variety of chlorogenic acid compounds, flavonoids, inositol and volatile oils. The volatile oils mainly include linalool and linalool, which have varying degrees of inhibitory effects on a variety of pathogenic bacteria and viruses.

[0012] Schisandra: The chemical components mainly include volatile oils, lignans, lipids, amino acids, polysaccharides, etc., among which lignans are the main active ingredients of Schisandra. The total lignan content in Schisandra fruit is 18.1%, and the total lignan content in the stem is 10.25%. In addition, it also contains deoxyschisandrin, volatile oils, citral, citric acid, vitamin C and vitamin E, etc. The volatile oil in Schisandra seeds is 2%, and the pulp contains 0.3%. The volatile oil is mainly composed of citral, α, β-cymene, and β-cymene. In addition, there are many terpenes such as monoterpenes, oxygenated monoterpenes, sesquiterpenes, oxygenated sesquiterpenes, etc.

[0013] Bletilla striata: The main chemical components include volatile oil, mucilage, Bletilla striata polysaccharide, Bletilla striata mannan, bibenzyl compounds, dihydrophenanthrene compounds, phenanthrene compounds, glucosides, quinones, flavonoids and anthocyanins, etc.

[0014] Folium Isatidis: Its chemical components include organic acids, alkaloids, trace elements and glycosides, among which alkaloids are the main active ingredients.

[0015] Zanthoxylum bungeanum: The chemical components of Zanthoxylum bungeanum mainly include alkaloids, coumarins, lignans and flavonoids, etc. These components endow Zanthoxylum bungeanum with multiple pharmacological activities, such as anti-inflammatory, analgesic, antibacterial and anti-tumor effects.

[0016] Isatis root: contains alkaloids, amino acids, quinazolin, and organic acids; it also contains indigo carmine, indigo, hydroxyindigo carmine, sitosterol, adenosine, syringin, larch resin alcohol and other ingredients, which have the effects of clearing away heat and detoxifying, cooling blood and relieving sore throat.

[0017] Ten major benefits: The chemical components include berberine, jatrorrhizine, and berberine. Berberine has a strong antibacterial effect.

[0018] Phellodendron: The bark contains alkaloids such as berberine, jatrorrhizine, magnolia pine, phellodendronine, N-methylhordenine, palmitoyl tetrandrine, and daurine; it also contains phellodendronone, phellodendron lactone, dactylide, phellodendron acid, cyanofluoric acid, 7-dehydrostigmasterol, β-sitosterol, and campesterol. The root bark contains berberine, jatrorrhizine, phellodendronine, and N-methylhordenine. The wood also contains berberine, and the fresh leaves contain phellodendron glycoside, dehydro-phellodendron glycoside, dehydro-iso-phellodendron glycoside, and iso-phellodendron glycoside. The dried leaves contain hyperoside, but not phellodendron glycoside. Berberine has an effective antibacterial effect.

[0019] Rehmannia glutinosa: The main chemical components include terpenes and their glycosides, organic acids, amino acids, phenols, sugars, etc.

[0020] Licorice: The main chemical components are triterpenoid saponins and flavonoids, as well as coumarins, alkaloids, amino acids, volatile components and polysaccharides.

[0021] When the above-mentioned Chinese medicines, peanut bran and enzyme bacteria are used together in the present application, Chinese medicines such as Aesculus multiflorus, Angelica sinensis, Cuscuta australis, Schisandra chinensis, Isatis root, Rehmannia glutinosa and Licorice are rich in macroelements, secondary elements and various chelated trace elements, amino acids, etc. required by plants. They also contain nutrients such as Lentinan, fungal polysaccharides, plant amino acids, etc. that are unique to Chinese medicinal materials. Among them, polysaccharides can repair damaged plant cells, and various natural nutrients such as amino acids, phenols, sugars, etc. can promote the good growth of branches, stems and leaves of plants, and the quality of the fruits produced will be better. Because it absorbs various antioxidants in various Chinese medicinal materials, it can also greatly increase the commercial rate and storage time of the fruits, harvest them early, prevent plants from premature aging, and extend the fruit picking period. The key is to improve the health of the plants themselves, thereby enhancing immunity.

[0022] In addition, the above-mentioned Chinese medicinal materials such as gentian, bupleurum, honeysuckle, bletilla striata, zelkova, and phellodendron are rich in antibacterial and antifungal substances such as alkaloids, saponins, saponin compounds, linalool, flavonoids, etc., which can effectively inhibit and kill bacteria. They also have strong decontamination and detoxification functions, can clean the surface of fruits and leaves, clean up garbage in the plant body (like a scavenger of plant meridians), dredge the vascular bundles of the plant, keep the plant circulation unobstructed, enhance the photosynthetic rate of the plant, accelerate metabolism, and reduce toxin accumulation.

[0023] To sum up, Chinese medicinal materials combined with enzyme bacteria can not only improve the plant's own immunity but also kill harmful bacteria in itself and the surrounding environment. Enzyme bacteria promote the healthy balance of beneficial bacteria in the soil where the plant is located. Peanut bran as organic matter can improve soil fertility, provide nutrition for beneficial microorganisms of plants and the environment, promote the proliferation of beneficial bacteria, inhibit citrus bast bacteria, and ultimately achieve the effect of long-term cure of citrus Huanglongbing disease.

[0024] Furthermore, the raw materials include the following ingredients in parts by weight: 0.4-0.8 parts of Chinese herbal medicine, 15-25 parts of peanut bran, 0.5-1.2 parts of enzyme bacteria and 40-60 parts of water.

[0025] The present application adopts the above proportions to combine Chinese herbal medicine, peanut bran, enzyme bacteria and water, which not only ensures that the composition has sufficient medicinal value, but also avoids the increase in production costs due to excessive use of Chinese herbal medicines, and provides sufficient organic matter and beneficial bacteria to promote the healthy growth of plants.

[0026] Furthermore, the enzyme bacteria is EM bacteria.

[0027] EM bacteria is a mixed bacteria that generally includes photosynthetic bacteria, yeast, lactic acid bacteria and other beneficial bacteria. The mechanism of its addition to the composition for improving the disease condition of plants is to form a competition between EM bacteria and pathogenic microorganisms for nutrients. Since EM bacteria can easily survive and reproduce in the soil, they can quickly and stably occupy the ecological position in the soil and form a dominant community of beneficial microorganisms, thereby controlling the reproduction of pathogenic microorganisms and the invasion of crops.

[0028] Furthermore, the Chinese herbal medicine includes the following medicinal materials in parts by weight: 2-3 parts of bupleurum, 2-3 parts of zanthoxylum bungeanum, 1-2 parts of gentian, 1-2 parts of scutellaria baicalensis, 1-2 parts of angelica sinensis, 1-2 parts of dodder seeds, 1-2 parts of honeysuckle, 1-2 parts of isatis indigotica, 1-2 parts of licorice, 1-2 parts of rehmannia root, 1.5-2 parts of schisandra chinensis, 1.5-2 parts of bletilla striata, 1.5-2 parts of phellodendron chinense, 0.5-0.6 parts of isatis root and 0.5-0.6 parts of mahonia.

[0029] The Chinese herbal medicines used in the above proportions can have a better antibacterial effect, and contain sufficient nutritional value to promote the plant's own immunity on the basis of preventing and treating Bacillus citri var.

[0030] Furthermore, the Chinese herbal medicine includes the following medicinal materials in parts by weight: 2 parts of Bupleurum chinense, 2 parts of Zanthoxylum bungeanum, 1 part of Gentiana scabra, 1 part of Polygonum multiflorum, 1 part of Angelica sinensis, 1 part of Cuscuta australis, 1 part of Honeysuckle, 1 part of Isatis indigotica, 1 part of Licorice, 1 part of Rehmannia glutinosa, 1.5 parts of Schisandra chinensis, 1.5 parts of Bletilla striata, 1.5 parts of Phellodendron chinense, 0.5 part of Isatis indigotica and 0.5 part of Mahonia suffruticosa.

[0031] The Chinese herbal medicine using the above medicinal materials in parts by weight has a better antibacterial effect and can better promote the healthy growth of plants.

[0032] On the other hand, the present invention also provides a method for preparing a liquid fertilizer for preventing and treating citrus Huanglongbing disease by fermenting Chinese herbal medicine, comprising the following steps:

[0033] Step A: Grind each component of the Chinese herbal medicine into powder, and mix it evenly with peanut bran, enzyme bacteria and water in proportion to obtain a first mixture;

[0034] Step B: placing the first mixture in a fermentation tank for fermentation, and collecting the obtained liquid after fermentation to obtain liquid fertilizer for preventing and controlling citrus Huanglongbing disease.

[0035] Furthermore, the fermentation time in step B is 30-40 days.

[0036] Furthermore, during fermentation, the first mixture is stirred every 12-24 hours, and each stirring is for 1-1.5 hours.

[0037] The preparation method of the liquid fertilizer for preventing and treating citrus Huanglongbing provided by the present invention comprises the following steps: grinding various herbs into powder and then putting them into a fermentation tank together with peanut bran, enzyme bacteria and water for fermentation; the herbs ground into powder can fully release the medicinal ingredients contained therein; during the fermentation process, the peanut bran can be further decomposed into nutrients that are more conducive to plant absorption under the action of the enzyme bacteria, while also ensuring the expansion of the enzyme bacteria; the enzyme bacteria further ferments and decomposes the Chinese herbal medicines, decomposing the effective ingredients of the Chinese herbal medicines into small molecular substances, which are helpful for the plants to absorb and utilize; and finally, the liquid fertilizer is made, which is convenient for irrigation and is more conducive to plant absorption.

[0038] The above method can ensure the smooth progress of fermentation and achieve the purpose of multi-time monitoring, avoiding the generation of other bacteria due to excessively high temperature.

[0039] The beneficial effects of the present invention are:

[0040] 1. The liquid fertilizer for preventing and treating citrus Huanglongbing disease, which is made by fermenting Chinese herbal medicine, provided by the present invention, has the characteristics of being both medicine and food after scientific matching. It can provide the required nutrients for the growth and development of plant life, and the active ingredients contained in the components can effectively inhibit the growth, reproduction and spread of Huanglongbing disease bacteria. It can be used to prevent and treat citrus Huanglongbing disease without causing pesticide residues. Because the active substances and alkaline substances and saponin compounds in traditional Chinese medicine are complex and stable, they can play a long-term role and achieve the purpose of curing citrus Huanglongbing disease.

[0041] 2. The preparation method of a traditional Chinese medicine composition for preventing and treating citrus Huanglongbing provided by the present invention is simple, convenient, economical and practical, and maximizes the utility value of the traditional Chinese medicine composition for preventing and treating citrus Huanglongbing. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 In the present application, liquid fertilizer was used to irrigate the roots for three months, and the leaves of the diseased plants turned green, and the plants grew well.

[0043] Figure 2 In the present application, liquid fertilizer was used to pour on the roots for seven months, and the diseased plants recovered to health;

[0044] Figure 3 This is a comparison diagram of diseased plants after five months of root irrigation with liquid fertilizer in the embodiment of the present application;

[0045] Figure 4 In the present application example, the roots were sprayed with liquid fertilizer for two months, and the result was negative after detection by Huanglongbing reagent (yellow liquid on the left, and the diseased plant control on the right without spraying with liquid fertilizer was positive and black).

[0046] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0048] Unless otherwise defined, all professional and scientific terms used herein have the same meanings as those familiar to those skilled in the art. In addition, any methods and materials similar or equivalent to those described herein may be applied to the present invention. The preferred implementation methods and materials described herein are for demonstration purposes only and are not intended to limit the content of this application.

[0049] The experimental methods in the following examples are conventional methods unless otherwise specified, and the experimental materials used in the following examples are purchased from commercial channels unless otherwise specified.

[0050] Example 1

[0051] A liquid fertilizer for preventing and treating citrus Huanglongbing disease made by fermenting Chinese herbal medicines is made from the following raw materials: 57g of bupleurum, 57g of zelkova, 28.5g of gentian, 28.5g of parsley, 28.5g of angelica, 28.5g of dodder seed, 28.5g of honeysuckle, 28.5g of isatis indigotica, 28.5g of liquorice, 28.5g of rehmannia, 42.75g of schisandra, 42.75g of bletilla striata, 42.75g of phellodendron, 14.25g of isatis root, 14.25g of mahonia, 20kg of peanut bran, 1kg of EM bacteria and 50kg of water.

[0052] The liquid fertilizer is prepared by the following steps: grinding each Chinese herbal medicine into powder, mixing it with peanut bran, EM bacteria and water, and stirring it evenly; then placing it in a fermentation tank for fermentation; stirring it once every 24 hours during the fermentation process, stirring it for 1 hour each time, and fermenting it for 30 days to finally obtain the liquid fertilizer for preventing and treating citrus Huanglongbing disease.

[0053] Example 2

[0054] A liquid fertilizer for preventing and treating citrus Huanglongbing disease, which is made by fermenting Chinese herbal medicines, is made from the following raw materials in parts by weight: raw materials: 90g of bupleurum chinense, 90g of zelkova zanthoxylum, 30g of gentian, 30g of parsley, 30g of angelica sinensis, 30g of dodder seed, 30g of honeysuckle, 30g of isatis indigotica, 30g of liquorice, 30g of rehmannia root, 45g of schisandra chinensis, 45g of bletilla striata, 60g of phellodendron, 15g of isatis root, 15g of mahonia, 15kg of peanut bran, 0.5kg of EM bacteria, and 40kg of water.

[0055] The liquid fertilizer is prepared by the following steps: grinding each Chinese herbal medicine into powder, mixing it with peanut bran, EM bacteria and water, and stirring it evenly; then placing it in a fermentation tank for fermentation; stirring it once every 16 hours during the fermentation process, stirring it for 1 hour each time, and fermenting it for 35 days to finally obtain the liquid fertilizer for preventing and treating citrus Huanglongbing disease.

[0056] Example 3

[0057] A liquid fertilizer for preventing and treating citrus Huanglongbing disease, which is made by fermenting Chinese herbal medicines, is made from the following raw materials in parts by weight: 96g of bupleurum, 64g of zelkova, 32g of gentian, 32g of parsley, 32g of angelica, 64g of dodder seed, 64g of honeysuckle, 64g of isatis indigotica, 64g of liquorice, 64g of rehmannia, 64g of schisandra, 64g of bletilla, 57.6g of phellodendron, 19.2g of isatis root, 19.2g of mahonia, 25kg of peanut bran, 1.2kg of EM bacteria, and 60kg of water.

[0058] The liquid fertilizer is prepared by the following steps: grinding each Chinese herbal medicine into powder, mixing it with peanut bran, enzyme bacteria and water, and stirring it evenly; then placing it in a fermentation tank for fermentation; stirring it once every 12 hours during the fermentation process, stirring it for 1.5 hours each time, and fermenting it for 40 days to finally obtain liquid fertilizer for preventing and treating citrus Huanglongbing disease.

[0059] Test example

[0060] The liquid fertilizer of the present invention was commissioned to Yunnan Shennongju Fertilizer Co., Ltd., Jiangxi Jinmanyuan Ecological Agriculture Technology Co., Ltd., and Guangxi Shennongju for batch production in 2003 and put into the southern citrus producing area market and achieved remarkable results, helping citrus growers prevent the occurrence and spread of citrus Huanglongbing disease and reduce the economic losses caused to growers by citrus Huanglongbing disease.

[0061] The liquid fertilizer prepared in Example 1 was used by citrus farmers in Yunnan, Guangxi and Jiangxi to treat citrus fruits infected with Huanglongbing in the fields. The method of use was as follows: first, the liquid fertilizer and water were diluted in a mass ratio of 1:50, and after stirring evenly, the diseased citrus trees were drenched with water, and the roots were evenly irrigated within 30 cm of the roots of the fruit trees, preferably with a soil layer of more than 5 cm penetrated.

[0062] The results of the observations on different diseased plants after three, seven and five months of medication were as follows: Figure 1-Figure 3 As shown, Figure 4 This is the result of the Huanglongbing test two months after the medication. Two months after the medication, the leaves turned green and new roots were seen growing when the roots were dug up. Half a year later, the fruit trees recovered to health, no Huanglongbing bacteria were detected, and the fruits developed well. After large-scale use, the liquid fertilizer has an efficacy of more than 85% in treating citrus Huanglongbing, which has been recognized by local growers.

[0063] In summary, the embodiments of the present application provide a Chinese medicine composition for preventing and treating citrus Huanglongbing and a preparation method thereof. Compared with the prior art, the embodiments of the present application have at least the following advantages or beneficial effects:

[0064] 1. The present application provides a traditional Chinese medicine composition for preventing and treating citrus Huanglongbing, which has the characteristics of being both a medicine and a food. It can not only provide the necessary nutrients for the growth and development of plant life, but also can be used to prevent and treat citrus Huanglongbing without causing pesticide residues. Because the active substances, alkaline substances and saponin compounds in the traditional Chinese medicine are complex and stable, they can have a long-term effect, thereby achieving the purpose of curing citrus Huanglongbing.

[0065] 2. The present application provides a method for preparing a traditional Chinese medicine composition for preventing and treating citrus Huanglongbing, which is simple, convenient, economical and practical and maximizes the utility value of the traditional Chinese medicine composition for preventing and treating citrus Huanglongbing.

[0066] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0067] The present invention and its implementation methods are described above, which is not restrictive. The drawings are only one of the implementation methods of the present invention, and the actual application is not limited thereto. In short, if ordinary technicians in the field are inspired by it and design methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention, they should all fall within the protection scope of the present invention.

Claims

1. A liquid fertilizer for preventing and treating citrus Huanglongbing disease made by fermenting Chinese herbal medicine, characterized in that: The invention is prepared from the following raw materials: Chinese herbal medicine, peanut bran, enzyme bacteria and water; the Chinese herbal medicine includes the following medicinal materials: gentian, seven-leaf parsley, purple bupleurum, angelica, dodder seed, honeysuckle, schisandra, bletilla striata, isatis indigotica, lianmianzhen, isatis root, mahonia, phellodendron, raw rehmannia and liquorice.

2. The liquid fertilizer for preventing and treating citrus Huanglongbing disease made by fermenting Chinese herbal medicine according to claim 1, characterized in that: The raw materials include the following components in parts by weight: 0.4-0.8 parts of Chinese herbal medicine, 15-25 parts of peanut bran, 0.5-1.2 parts of enzyme bacteria and 40-60 parts of water.

3. The liquid fertilizer for preventing and treating citrus Huanglongbing disease made by fermenting Chinese herbal medicine according to claim 2, characterized in that: The enzyme bacteria is EM bacteria.

4. The liquid fertilizer for preventing and treating citrus Huanglongbing disease made by fermenting Chinese herbal medicine according to claim 3, characterized in that: The Chinese herbal medicine comprises the following medicinal materials in parts by weight: 2-3 parts of bupleurum chinense, 2-3 parts of zanthoxylum bungeanum, 1-2 parts of gentian, 1-2 parts of scutellaria baicalensis, 1-2 parts of angelica sinensis, 1-2 parts of dodder seeds, 1-2 parts of honeysuckle, 1-2 parts of isatis indigotica, 1-2 parts of liquorice, 1-2 parts of rehmannia root, 1.5-2 parts of schisandra chinensis, 1.5-2 parts of bletilla striata, 1.5-2 parts of phellodendron chinense, 0.5-0.6 parts of isatis root and 0.5-0.6 parts of mahonia.

5. The liquid fertilizer for preventing and treating citrus Huanglongbing disease made by fermenting Chinese herbal medicine according to claim 3, characterized in that: The Chinese herbal medicine includes the following medicinal materials in parts by weight: 2 parts of bupleurum chinense, 2 parts of zanthoxylum bungeanum, 1 part of gentian, 1 part of seven-leaf parsley, 1 part of angelica sinensis, 1 part of dodder seed, 1 part of honeysuckle, 1 part of isatis indigotica, 1 part of liquorice, 1 part of rehmannia root, 1.5 parts of schisandra chinensis, 1.5 parts of bletilla striata, 1.5 parts of phellodendron amurense, 0.5 part of isatis root and 0.5 part of mahonia.

6. The method for preparing a liquid fertilizer for preventing and treating citrus Huanglongbing disease by fermenting Chinese herbal medicine according to any one of claims 1 to 5, characterized in that: The following steps are involved: Step A: Grind the various components of the Chinese herbal medicine into powder, and mix them evenly with the peanut bran, enzyme bacteria and water in proportion to obtain a first mixture; Step B: placing the first mixture in a fermentation tank for fermentation, and collecting the obtained liquid after fermentation to obtain liquid fertilizer for preventing and controlling citrus Huanglongbing disease.

7. The liquid fertilizer for preventing and treating citrus Huanglongbing disease made by fermenting Chinese herbal medicine according to claim 6, characterized in that: The fermentation time in step B is 30-40 days.

8. The liquid fertilizer for preventing and treating citrus Huanglongbing disease made by fermenting Chinese herbal medicine according to claim 7, characterized in that: During fermentation, the first mixture is stirred every 12-24 hours, and each stirring is for 1-1.5 hours.

Images