Composition for treating root rot of zamioculcas zamiifolia and use method of composition

Abstract

The invention discloses a composition for treating root rot of zamioculcas zamiifolia and a use method of the composition, and belongs to the technical field of plant disease control. Wherein the root irrigation fertilizer is prepared from the following raw materials: chitosan oligosaccharide, seaweed essence, beta-aminobutyric acid, gamma-polyglutamic acid, compound sodium nitrophenolate and trichoderma harzianum; the foliage spraying agent comprises the following raw materials: glutathione, an amino acid foliage fertilizer, glycerol and triacontanol. For diseased plants, the effects of controlling and treating the diseased plants, promoting and inducing development of new roots of the diseased plants, avoiding premature senility of seedlings caused by rooting induction and promoting rejuvenation of the diseased plants are achieved by combining an efficient bactericide, improving balance of matrix rhizosphere germs and beneficial bacteria (applying trichoderma harzianum), plant stimulant (seaweed essence and chitosan), foliar fertilizer (amino acid foliar fertilizer) and the like.

Description

Technical Field

[0001] The present invention belongs to the technical field of plant disease control, and particularly relates to a composition for treating the root rot of Zamioculcas zamiifolia and a method for using the same. Background Art

[0002] Rhizome rot is a soil-borne disease that often occurs in the production of ornamental and horticultural crops at present, and it is also a tenacious and extremely difficult-to-control plant disease. The disease is mainly caused by the virus carried by the seedlings themselves and the deterioration of the soil microenvironment. Therefore, in some propagation methods dominated by asexual reproduction such as branch and leaf cuttings and conventional tissue culture, the virus often accumulates during the asexual reproduction process, which is an important reason for the increasingly serious soil-borne diseases such as rhizome rot.

[0003] The carrying and accumulation of the virus cause the gradual degradation of plants during batch asexual reproduction. For example, many of their excellent ornamental characteristics and disease resistance gradually degenerate. And due to factors such as the stage of industrial development and the difficulty of virus-free technology, not all valuable plants can obtain virus-free propagation germplasms with more excellent varieties, traits, disease resistance, and stress resistance through virus-free technology during a specific period. This is also the key problem faced in current production management. It is necessary to study a technical management system that can balance plant growth and disease resistance in the current production management of germplasm characteristics. This is even, to a certain extent, a problem related to whether the industry of a certain valuable variety can continue to develop.

[0004] Zamioculcas zamiifolia, also known as Snowdrop Anthurium (scientific name: Zamioculcas zamiifolia Engl.), is native to the tropical savannah climate region with relatively low rainfall in eastern Africa. It was introduced into China in 1997 and is an indoor foliage plant, which can purify the indoor air. It also has the alias of "Dragon and Phoenix Tree" and symbolizes good fortune, prosperity, and wealth. It is a perennial evergreen herbaceous plant and is an extremely rare foliage plant with underground tubers. Its plant shape, leaf shape, color, and symbolic meaning can all bring a special enjoyment to consumers, and it is a very popular ornamental plant. Due to its characteristics, the most suitable area for the propagation of Zamioculcas zamiifolia in China is the southern part of Hainan Province. The tropical climate and excellent sunlight in this area provide the first choice and the best industrial development area for the industrial development of Zamioculcas zamiifolia in China, and also contribute greatly to the local economic development.

[0005] The pathogen of the root rot of Zamioculcas zamiifolia infects and spreads by overwintering in the substrate in the form of mycelium, chlamydospores or conidia. The contaminated fertilizers and diseased soil are the main primary infection sources in the following year. Conidia produced on the diseased stems are used for secondary infection, and they spread and spread through splashing of watering. Prolonged retention of moisture is likely to cause the disease. In the hot summer, the temperature of the substrate rises. When the base of the stem is buried in the soil and overwatered, and the external temperature is high, the water evaporates, resulting in a very high temperature at the base of the stem. The epidermal tissue at the base of the neck is damaged, and the pathogen invades and causes harm. Generally, the disease starts to occur 10-15 days after the end of the plum rain season, and then the incidence gradually increases and stops occurring in mid-September. From the perspective of microbial pathology alone, there are many fungicides that can effectively kill the pathogen of the root rot of Zamioculcas zamiifolia, such as azoxystrobin, fludioxonil, hymexazol, metalaxyl and other fungicides, which are also used by current producers, but the results show that the effect is not good.

[0006] The reasons for the analysis are that the cultivation of Zamioculcas zamiifolia is different from that of field crops: First, the cultivation of Zamioculcas zamiifolia is soilless substrate cultivation in a greenhouse. During the high-temperature and high-humidity season, compared with field planting, the temperature in the greenhouse facility is too high, the humidity is too high, and the light is too low. The biosynthesis and signal of the plant immune defense hormone salicylic acid are significantly inhibited, reducing the disease resistance of the plant. Second, the cultivation of Zamioculcas zamiifolia is soilless substrate cultivation in a greenhouse facility, and frequent irrigation with water-soluble fertilizers is required during management; in field planting, there are abundant nitrifying bacteria in the soil that quickly oxidize ammonium nitrogen and urea nitrogen in the fertilizer into nitrate nitrogen, which becomes the main nitrogen source type for crop growth. However, frequent water and fertilizer leaching in soilless cultivation makes the main form of nitrogen fertilizer absorbed by the substrate for the plant ammonium nitrogen, and too much ammonium nitrogen inhibits the absorption of many cations such as calcium and magnesium elements and reduces the robustness of the plant. Third, Zamioculcas zamiifolia is a green foliage plant, and the fertilizers used in cultivation management are mainly high-nitrogen fertilizers (even the commonly used 20-20-20 balanced fertilizer has a very high nitrogen content). The amount of ammonium nitrogen and urea in this type of fertilizer is relatively high, while the amount of nitrate nitrogen is relatively low. In the soilless cultivation of Zamioculcas zamiifolia in the greenhouse, calcium absorption is severely inhibited during the high-temperature and high-humidity period, and the nitrogen content of the plant is relatively high, resulting in too low lignification degree of the plant, tender tissue, and low resistance. Fourth, in the soilless substrate cultivation of Zamioculcas zamiifolia, the absorption of calcium and other elements is inhibited under the supply of high ammonium nitrogen, resulting in the plant roots discharging acid and acidifying the rhizosphere microenvironment; the acidic rhizosphere microenvironment further deteriorates the ability of balanced nutrient absorption. This can be known by measuring the pH value of the rhizosphere substrate. In severe cases, the pH is about 3.0, accompanied by root tip necrosis. In field cultivation, the acidic rhizosphere microenvironment will dissolve calcium carbonate, calcium phosphate, etc. in the soil, which not only helps to buffer the acidity but also provides calcium elements for the plant to absorb to balance the nutrient absorption of Zamioculcas zamiifolia. However, the soilless cultivation substrate itself cannot provide the above substances, resulting in the deterioration of the situation. Balancing the nutrient absorption of the plant, enhancing the robustness of the plant, improving its own disease resistance and defense system, and promoting the occurrence of new roots to restore the root absorption ability are the prerequisites for treating the root and stem rot of Zamioculcas zamiifolia. Soilless substrate cultivation is different from field soil cultivation, which is also one of the differences that must be considered in the treatment of root and stem rot of Zamioculcas zamiifolia and the treatment of diseases in field soil cultivation.

[0007] The main reasons for the outbreak of root rot in field soil cultivation are: continuous cropping obstacle (the accumulation of secondary substances secreted by the roots due to continuous cropping of crops affects the soil properties), insufficient soil organic matter, deterioration of the soil physical environment (such as soil acidification and alkalization causing soil compaction, which is conducive to the reproduction of disease-causing bacteria, and unsuitable pH resulting in unbalanced effective supply of fertilizer components and plant absorption ratio, reducing robustness and resistance), climate stress (unfavorable climate causes the rupture of the epidermal tissue of the plant and the invasion and outbreak of pathogenic bacteria), etc.; for field soil crops, soil improvement is a non-rapid-acting project, so a more rapid and feasible solution is to irrigate the roots with pesticides for non-discriminatory sterilization, which only inhibits the spread of diseases and reduces greater losses, but it also does not help the recovery of diseased plants.

[0008] The money tree is a soilless potted plant, and there are more flexible measures for disinfection. As mentioned above, in addition to the stressful climate, an important reason for the outbreak of the root rot of the money tree is that the deviation of the fertilizer supply components results in insufficient lignification of the plants, insufficient robustness, and poor resistance. To treat diseased plants, measures such as killing bacteria, improving the microbial population structure in the rhizosphere of the substrate, and promoting the growth of new roots are needed to treat and restore the diseased plants and recover the losses.

[0009] Therefore, it is an urgent problem for those skilled in the art to provide a composition that can effectively prevent the root rot of the money tree. Summary of the Invention

[0010] In view of this, the present invention provides a composition for treating the root rot of the money tree and its use method. For diseased plants, the present invention combines a highly effective bactericide, improves the balance of pathogenic bacteria and beneficial bacteria in the rhizosphere of the substrate (applying Trichoderma harzianum), plant stimulants (seaweed essence, chitosan), foliar fertilizer (amino acid foliar fertilizer), etc., to achieve the effects of controlling and treating diseased plants, promoting and inducing the development of their new roots, avoiding premature senescence of seedlings caused by induced root growth, and promoting the rejuvenation of diseased plants.

[0011] To achieve the above object, the present invention adopts the following technical solutions:

[0012] A composition for treating the root rot of the money tree, comprising a root irrigation fertilizer and a foliar spraying agent;

[0013] Among them, the root irrigation fertilizer comprises the following raw materials: chitosan oligosaccharide, seaweed essence, β-aminobutyric acid, γ-polyglutamic acid, sodium nitrophenolate and Trichoderma harzianum;

[0014] The foliar spraying agent comprises the following raw materials: glutathione, amino acid foliar fertilizer, glycerol and triacontanol.

[0015] Analysis shows that the reasons why the existing technologies for preventing root rot of money tree are not effective are as follows: ① The early symptoms of root rot are seldom manifested, and by the time they are manifested, the disease has already deteriorated to a very serious level; ② Reduced plant resistance is the dominant internal cause of pathogen infection and disease outbreaks, while environmental conditions are the inducing external factors. Low plant resistance leads to insufficient defense against pathogen invasion under environmental stress. Pesticide antibacterial agents have a certain effect on the reproduction of pathogens from the perspective of microbial physiology, but if the internal factors that promote plant resistance cannot be solved, it is equivalent to the plant letting go of its defense against pathogens and being unable to prevent and control them fundamentally, not to mention that pesticides themselves also have a certain inhibitory effect on plant growth; ③ The application of pesticide antibacterial agents is delayed, and they are mostly applied in the late stage. Drugs are used only after the epidemic has occurred. At this time, plants within a certain range have been harmed, and the pesticides are effective in inhibiting and sterilizing, but they do not help the recovery of diseased plants; ④ The fleshy stems and roots of the money tree are used as storage organs and absorption organs respectively. The impact of their lesions on plants is far greater than that of individual leaf damage. The importance of root damage to plants is not comparable to that of leaves. Even if the expansion of pathogens is effectively suppressed, the root damage causes many substances necessary for plant growth: such as endogenous hormone cytokinins and other important hormone substances, amino acids and other nutrients, mineral nutrients, etc., are inhibited from being absorbed, and eventually lead to premature aging of seedlings and loss of ornamental value; that is, simple pesticide disease control measures have not fundamentally solved the problem of root and stem rot of money tree. Therefore, the prevention and control of root and stem rot of money tree in the present invention starts from two aspects. For plants that have already been diseased, one is to use fungicides to irrigate roots and sterilize, and at the same time, foliar fertilizer is used to promote photosynthesis nutrient accumulation, promote new root induction and plant rejuvenation, so as to achieve the effect of treating both the symptoms and the root causes, and achieve the purpose of treating both the symptoms and the root causes, which is meaningful for industrial cultivation.

[0016] Preferably, the mass ratio of chitosan oligosaccharide, algae extract, β-aminobutyric acid, γ-polyglutamic acid, sodium nitrophenolate and Trichoderma harzianum in the root irrigation fertilizer is 10:300-500:3-10:4-10:2-3:0.33-0.5.

[0017] Preferably, the mass ratio of glutathione, amino acid foliar fertilizer, glycerol and triacontanol in the foliar spray is 500-800:2000:100:0.5-1.

[0018] Preferably, the root irrigating fertilizer is used before the diseased plants are treated with H 2 O 2 Saturate the roots with the solution.

[0019] Preferably, the H 2 O 2 The solution concentration is 0.8-1.2 mmmol / L, and it is applied once a day for three consecutive days. The root irrigation fertilizer is used 24 hours after the last root irrigation.

[0020] Preferably, the ratio of raw materials related to the amino acid foliar fertilizer is: 4g / L sugarcane brown sugar, 2g / L potassium dihydrogen phosphate, 5ml / L rice vinegar, 250mg / L glycine, 300mg / L glutamic acid, 150mg / L arginine and 500mg / L proline.

[0021] The method for using the composition for treating root rot of money tree described above comprises the following specific steps:

[0022] (1) H 2 O 2 The solution is saturated and irrigated to the roots once a day for three consecutive days. 24 hours after the last root irrigation, root fertilizer is applied to the roots, wherein the root fertilizer includes raw materials of the following concentrations: chitosan oligosaccharide 10 mg / L, seaweed essence 300-500 mg / L, β-aminobutyric acid 3-10 mg / L, γ-polyglutamic acid 4-10 mg / L, sodium nitrophenolate 2-3 mg / L, and Trichoderma harzianum 0.33-0.5 mg / L;

[0023] (2) spraying foliar sprays at the same time until new roots are found to have sprouted, then stopping spraying the foliar sprays and switching to water-soluble fertilizers; wherein the foliar sprays include the following raw materials at the following concentrations: 500-800 mg / L glutathione, 2 g / L amino acid foliar fertilizer, 100 mg / L glycerol, and 0.5-1 mg / L triacontanol.

[0024] Preferably, the root irrigation fertilizer in step (1) is applied once every 15-20 days, with saturated root irrigation each time, for 3-4 times in succession.

[0025] Preferably, the foliar spray in step (2) is sprayed on the leaves once every 5-7 days, at a rate of 15 liters of foliar fertilizer solution per mu.

[0026] Preferably, the water-soluble fertilizer in step (2) comprises raw materials of the following concentrations: 3-10 mg / L of β-aminobutyric acid, 4-10 mg / L of γ-polyglutamic acid, 0.4 g / L of NPK balanced fertilizer, 0.189 g / L of calcium nitrate tetrahydrate, 0.154 g / L of magnesium nitrate hexahydrate and 2-3 mg / L of sodium nitrophenolate, and fertilization is performed at the normal water and fertilizer management frequency;

[0027] According to the use of the composition described above in treating root rot of money tree.

[0028] It can be seen from the above technical solutions that, compared with the prior art, the mechanism of the beneficial effects of the present invention is as follows:

[0029] (1) The existing technology of using pesticides alone can only control the expansion and deterioration of the disease, but has no effect on the treatment and recovery of diseased seedlings, and does not help to recover losses. The composition of the present invention focuses on promoting the recovery of diseased plants on the basis of controlling the expansion of the disease, thereby recovering the existing losses;

[0030] (2) The present invention first saturates the root system of diseased plants with H 2 O 2 solution for root irrigation disinfection instead of using chemical fungicides to avoid the influence of matrix residues of other fungicides on the application of the later biological bacterium Trichoderma harzianum; the H 2 O 2 solution used in the present invention has a strong bactericidal effect and can be decomposed into oxygen in 8 - 10 hours, which not only helps to increase the oxygen content in the rhizosphere but also does not affect the application of biological bacteria. Then, the biological bacterium agent Trichoderma harzianum helps to resist pathogenic bacteria and improve the rhizosphere microbial environment, providing an excellent microenvironment for the induction and growth of new roots of diseased plants and resisting the continuous invasion of pathogenic bacteria into the root and stem tissues;

[0031] (3) Since the root system of diseased plants is damaged and its function is severely weakened, the present invention sprays amino acid foliar fertilizer combined with triacontanol to help make up for the inhibited root absorption, improve photosynthetic capacity, assimilate accumulation, and the downward transport of sugars and auxins, promote the induction and growth of new roots. Adding glycerol not only helps to balance the nutrient balance in tissue cells, but also can greatly improve the adhesion of the fertilizer solution on the leaf surface and increase the fertilizer efficiency;

[0032] (4) Adding sodium nitrophenolate to the fertilizer for irrigating diseased plants in the present invention helps to enhance stress resistance, improve the protoplast flow of cells and promote nutrient absorption and transport; seaweed essence is an effective plant stress resistance and root growth stimulant and will not cause premature senescence of plants like auxin plant growth regulators such as naphthalene acetic acid and indole acetic acid; glutathione is an excellent reducing agent, which helps plants resist adverse environmental stresses, improve the antioxidant capacity of plants, and helps maintain the stability of biological membranes; chitosan is a natural plant bacteriostatic agent with a wide bacteriostatic spectrum, which has obvious inhibitory effects on bacteria and plant pathogenic fungi, inhibits their mycelial growth, spore germination, and destroys the integrity of the fungal cell membrane;

[0033] (5) Using Trichoderma harzianum in the present invention helps to reconstruct the rhizosphere microbial population structure after non - discriminatory sterilization by the fungicide H 2 O 2 so that beneficial bacteria gradually dominate and suppress the propagation of disease - causing bacteria, which helps to maintain the long - term positive cycle of the rhizosphere environment. Detailed implementation manners

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0035] Example 1

[0036] The present invention provides a preparation method of a composition for treating the root rot of money tree, and the specific steps are as follows:

[0037] (1) Prepare the root irrigation fertilizer, which includes raw materials with the following concentrations: chitosan oligosaccharide 10 mg / L, seaweed essence 500 mg / L, BABA 5 mg / L, γ-PGA 6 mg / L, sodium nitrophenolate 3 mg / L, and Trichoderma harzianum diluted 2500 times;

[0038] (2) Prepare the foliar spray agent, which includes raw materials with the following concentrations: glutathione 500 mg / L, amino acid foliar fertilizer 2 g / L, glycerol 100 mg / L, and triacontanol 0.5 mg / L; among them, the raw material ratio of the amino acid foliar fertilizer is: sugarcane brown sugar 4 g / L, potassium dihydrogen phosphate 2 g / L, rice vinegar 5 ml / L, glycine 250 mg / L, glutamic acid 300 mg / L, arginine 150 mg / L, and proline 500 mg / L.

[0039] Example 2

[0040] The present invention provides a preparation method of a composition for treating the root rot of money tree, and the specific steps are as follows:

[0041] (1) Prepare the root irrigation fertilizer, which includes raw materials with the following concentrations: chitosan oligosaccharide 10 mg / L, seaweed essence 500 mg / L, BABA 10 mg / L, γ-PGA 10 mg / L, sodium nitrophenolate 3 mg / L, and Trichoderma harzianum diluted 3000 times;

[0042] (2) Prepare the foliar spray agent, which includes raw materials with the following concentrations: glutathione 800 mg / L, amino acid foliar fertilizer 2 g / L, glycerol 100 mg / L, and triacontanol 1 mg / L; among them, the raw material ratio of the amino acid foliar fertilizer is: sugarcane brown sugar 4 g / L, potassium dihydrogen phosphate 2 g / L, rice vinegar 5 ml / L, glycine 250 mg / L, glutamic acid 300 mg / L, arginine 150 mg / L, and proline 500 mg / L.

[0043] Example 3

[0044] The present invention provides a preparation method of a composition for treating the root rot of money tree, and the specific steps are as follows:

[0045] (1) Prepare the root irrigation fertilizer, which includes raw materials with the following concentrations: chitosan oligosaccharide 10 mg / L, seaweed essence 300 mg / L, BABA 3 mg / L, γ-PGA 4 mg / L, sodium nitrophenolate 2 mg / L, and Trichoderma harzianum diluted 2000 times;

[0046] (2) Configure the foliar spray agent, which includes raw materials with the following concentrations: glutathione 500 mg / L, amino acid foliar fertilizer 2 g / L, glycerol 100 mg / L, and triacontanol 0.5 mg / L; among them, the raw material ratio of the amino acid foliar fertilizer is: sugarcane brown sugar 4 g / L, potassium dihydrogen phosphate 2 g / L, rice vinegar 5 ml / L, glycine 250 mg / L, glutamic acid 300 mg / L, arginine 150 mg / L, and proline 500 mg / L.

[0047] Application Example

[0048] Treatment of root rot of medium-sized potted seedlings of Zamioculcas zamiifolia with a height of 30 - 40 cm:

[0049] Select 40 pots of seedlings with root rot and similar disease conditions as much as possible from medium-sized potted seedlings of Zamioculcas zamiifolia with a height of 30 - 40 cm that have not undergone experiments, and divide them into 20 pots each to set up treatment group C and control group D for experiments.

[0050] Treatment of group C: First, saturate the root irrigation of diseased plants with a solution of H 2 O 2 with a molar concentration of 1 mmol / L for three consecutive days, once a day. After 24 hours of the last root irrigation, apply the root irrigation fertilizer in Example 1 to the diseased plants. The frequency of applying the root irrigation solution is about once every 15 days, and each time is saturated root irrigation. At the same time, combine with the foliar spray agent and spray the leaves at a rate of 15 liters per mu, once every 7 days;

[0051] Treatment of group D: It is the conventional practice in the current cultivation management. The diseased plants are irrigated with a 1000-fold solution of 50% chlorobromoisocyanuric acid soluble powder, once every 7 days, with saturated root irrigation.

[0052] Observe the results after 30 - 60 days of different treatments for the two groups, as shown in Table 1.

[0053] Table 1 Experimental results of the treatment, control, and rejuvenation of root rot of Zamioculcas zamiifolia

[0054]

[0055] It can be seen from the data analysis in Table 1 that: within the same time after treatment, the mortality rate of diseased plants in treatment D (irrigation with existing technology pesticides) is much higher than that in treatment C (the technology of the present invention). The reasons are as follows: First, although pure pesticides have the effect of inhibiting and killing germs, they also have a certain inhibitory effect on the plants themselves; therefore, the mortality rate of diseased plants within 30 days after treatment is much higher than that in treatment C. Second, pesticides are effective in inhibiting and killing germs, but they do not help with the nutritional supplement of diseased plants. As mentioned above, the discovery of root rot itself has the characteristic of being delayed. The long-term poor absorption ability and increased consumption of diseased plants lead to a serious imbalance between absorption and consumption of the seedlings themselves, which is sufficient to cause death even if the pesticides are effective in sterilization later.

[0056] Again, as can be seen from the dry weight data per unit leaf area in Table 1, it is obvious that the existing measure of pesticide root irrigation has basically no obvious help for the generation of new roots and the growth of stems and leaves. Especially, although the time after treatment is extended (30 - 60 days), the leaf dry matter accumulation is still decreasing. Therefore, to a large extent, the ability to generate more roots is also due to the low degree of plant diseases in diseased plants. However, there is still a negative deficit between the nutrient synthesis and consumption of the seedlings. So even if some seedlings germinate new roots, the energy consumption for root growth is more likely to lead to premature senescence of the seedlings. The new root rate and the accumulation of leaf nutrients in Treatment C are significantly higher than those in Treatment D 60 days after treatment, indicating that the diseased plants have recovered significantly after Treatment C.

[0057] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can 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 composition for treating root rot of money tree, characterized in that: These include root drenches and foliar sprays; The root irrigation fertilizer comprises the following raw materials: chitosan oligosaccharide, seaweed extract, β-aminobutyric acid, γ-polyglutamic acid, sodium nitrophenolate and Trichoderma harzianum; The foliar spray comprises the following raw materials: glutathione, amino acid foliar fertilizer, glycerol and triacontanol.

2. A composition for treating root rot of money tree according to claim 1, characterized in that: The mass ratio of chitosan oligosaccharide, algae extract, beta-aminobutyric acid, gamma-polyglutamic acid, sodium nitrophenolate and Trichoderma harzianum in the root irrigation fertilizer is 10:300-500:3-10:4-10:2-3:0.33-0.

5.

3. A composition for treating root rot of money tree according to claim 1, characterized in that: The mass ratio of glutathione, amino acid foliar fertilizer, glycerol and triacontanol in the foliar spray is 500-800:2000:100:0.5-1.

4. A composition for treating root rot of money tree according to claim 1, characterized in that: Before using the root irrigation fertilizer, the diseased plants are irrigated with a saturated H2O2 solution.

5. A composition for treating root rot of money tree according to claim 4, characterized in that: The concentration of the H2O2 solution is 0.8-1.2 mmmol / L, and it is applied once a day for three consecutive days. The root irrigation fertilizer is used 24 hours after the last root irrigation.

6. A composition for treating root rot of money tree according to claim 1, characterized in that: The raw material ratio of the amino acid foliar fertilizer is: 4g / L sugarcane brown sugar, 2g / L potassium dihydrogen phosphate, 5ml / L rice vinegar, 250mg / L glycine, 300mg / L glutamic acid, 150mg / L arginine and 500mg / L proline.

7. A method for using the composition for treating root rot of money tree according to any one of claims 1 to 6, characterized in that: The specific steps include: (1) The diseased plants were irrigated with H2O2 solution once a day for three consecutive days. 24 hours after the last root irrigation, root fertilizer was applied to the roots. The root fertilizer included the following raw materials at the following concentrations: chitosan oligosaccharide 10 mg / L, seaweed extract 300-500 mg / L, β-aminobutyric acid 3-10 mg / L, γ-polyglutamic acid 4-10 mg / L, sodium nitrophenolate 2-3 mg / L, and Trichoderma harzianum 0.33-0.5 mg / L; (2) spraying foliar sprays at the same time until new roots are found to have sprouted, then stopping spraying the foliar sprays and switching to water-soluble fertilizers; wherein the foliar sprays include the following raw materials at the following concentrations: 500-800 mg / L glutathione, 2 g / L amino acid foliar fertilizer, 100 mg / L glycerol, and 0.5-1 mg / L triacontanol.

8. The method for using the composition for treating root rot of money tree according to any one of claim 7, characterized in that: The root fertilization in step (1) is performed once every 15-20 days, with saturated root fertilization each time, for 3-4 times in succession.

9. The method for using the composition for treating root rot of money tree according to any one of claim 7, characterized in that: The foliar spray described in step (2) is sprayed on the leaves once every 5-7 days, at a rate of 15 liters of foliar fertilizer liquid per mu.

10. The method for using the composition for treating root rot of money tree according to any one of claim 7, characterized in that: The water-soluble fertilizer in step (2) comprises raw materials of the following concentrations: 3-10 mg / L of β-aminobutyric acid, 4-10 mg / L of γ-polyglutamic acid, 0.4 g / L of NPK balanced fertilizer, 0.189 g / L of calcium nitrate tetrahydrate, 0.154 g / L of magnesium nitrate hexahydrate and 2-3 mg / L of sodium nitrophenolate.

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