Application of organic trisulfide compound in aspect of promoting plant growth and plant growth promoter

Abstract

The invention relates to the technical field related to plant growth promotion, and particularly provides application of an organic trisulfide compound in the aspect of plant growth promotion and a plant growth promoter. Wherein the organic trisulfide compound is selected from a structure as shown in a formula (I), or a tautomer thereof, or a stereoisomer thereof, or a pharmaceutically acceptable salt thereof. The organic trisulfide compound is applied to plant growth, seed germination, bud growth, root growth and seedling development are promoted, and the crop yield can be increased. # imgabs0 #

Description

Technical Field

[0001] The present application relates to the technical field related to promoting plant growth, and specifically to an application of an organic trisulfide compound in promoting plant growth and a plant growth promoter. Background Art

[0002] People have long relied on chemical fertilizers to promote plant growth and increase crop yields. However, this has also brought some problems, such as (1) causing an increase in nitrogen and phosphorus content in water, causing eutrophication of rivers, lakes, and inland seas, leading to excessive algae growth, deterioration of water quality, and mass death of fish and other aquatic organisms; (2) long-term excessive and simple application of chemical fertilizers will cause soil acidification; the amount of ammonium ions in the soil solution and in the organic and inorganic complexes on the soil microclusters will increase, the soil structure will be damaged, the soil will become compacted, and it will directly affect agricultural production costs and crop yields; (3) it will increase toxic components in food, feed, and drinking water, and the content of nitrogen compounds in well water and river water in areas where chemical fertilizers are used will increase, even exceeding drinking water standards; and (4) the soil microbial flora will be destroyed.

[0003] Excessive application of chemical fertilizers, especially nitrogen fertilizers, has a killing and inhibitory effect on microorganisms. Long-term application will cause the death of a large number of microorganisms, changes in the soil microbial flora, and many beneficial microorganisms will change from dominant populations to secondary populations, making crops susceptible to various diseases. In addition, the root system of crops, as an important absorption, synthesis, fixation and support organ, plays an important role in the growth and development of crops. A strong root system can provide sufficient nutrients and water for plant growth, which is the basis for high crop yields. Summary of the invention

[0004] In view of this, the present application provides an application of an organic trisulfide compound in promoting plant growth and a plant growth promoter. The present application applies the organic trisulfide compound to plant growth, which not only promotes seed germination, sprout growth, root growth and seedling development, but also increases crop yield.

[0005] In a first aspect, the present application provides an application of an organic trisulfide compound in promoting plant growth; wherein the organic trisulfide compound is selected from the structure represented by formula (I), or its tautomer, or its stereoisomer, or its pharmaceutically acceptable salt: ; Wherein, m1 and m2 are each independently selected from 0 or 1, and m1 and m2 are equal or unequal; n1 and n2 are each independently selected from 0 or 1, and n1 and n2 are equal or unequal; X1 and X2 are each independently selected from S or O, and X1 and X2 are the same or different; R1 and R2 are each independently selected from unsubstituted or substituted C 1-6 Alkyl, unsubstituted or substituted C 2-6 Alkenyl, unsubstituted or substituted C 5-10 Aryl (such as monocyclic aromatic group, preferably phenyl) or unsubstituted or substituted C 3-10 Heterocyclic aromatic group (such as monocyclic aromatic group or condensed aromatic group, preferably C 3-5 wherein one, two, three or more hydrogen atoms in R1 and / or R2 are optionally replaced by halogen, -CN, -OH, -SH, -NH2, -C 1-3 Alkyl, -OC 1-3 Alkyl, -OC 1-3 Alkenyl, -OC 1-3 Alkynyl, -SC 1-3 Alkyl, -SC 1-3 Alkenyl or -SC 1-3 and R1 and R2 are the same or different.

[0006] In some optional embodiments, m1 and m2 are not equal (e.g., m1 is selected from 0 and m2 is selected from 1, or m1 is selected from 1 and m2 is selected from 0). In some embodiments, m1 and m2 are equal (e.g., m1 and m2 are both selected from 0, or m1 and m2 are both selected from 1). In some embodiments, m1 and m2 are both selected from 0. In some embodiments, m1 and m2 are both selected from 1.

[0007] In some alternative embodiments, R1 and R2 are each independently selected from unsubstituted or substituted C 2-6 alkenyl, unsubstituted or substituted phenyl ( ), unsubstituted or substituted pyridyl ( ), unsubstituted or substituted thienyl ( ), unsubstituted or substituted thiazolyl ( ), unsubstituted or substituted furanyl ( ), or unsubstituted or substituted quinolyl ( ); wherein one, two, three or more hydrogen atoms in R1 and / or R2 are optionally replaced by halogen, -CN or -C 1-3 Alkyl substitution.

[0008] In other optional embodiments, R1 and R2 are each independently selected from unsubstituted or substituted C 2-6 wherein one, two, three or more hydrogen atoms in R1 and / or R2 are optionally replaced by halogen, -CN or -C 1-3Alkyl substitution.

[0009] In other optional embodiments, R1 and R2 are each independently selected from unsubstituted or substituted C 2-6 wherein one, two, three or more hydrogen atoms in R1 and / or R2 are optionally replaced by halogen, -CN or -C 1-3 Alkyl substitution.

[0010] In some optional embodiments, R1 and R2 are each independently selected from , , , , , , , , , , , , , , , , , , , , .

[0011] In some optional embodiments, R1 and R2 are each independently selected from , , , , , , , , , .

[0012] In some optional embodiments, R and R2 are each independently selected from , , , , , , , , .

[0013] In some specific embodiments, when m1 and m2 are both selected from 1, R1 and R2 are the same.

[0014] In some optional embodiments, n1 and n2 are not equal (e.g., n1 is selected from 0 and n2 is selected from 1, or n1 is selected from 1 and n2 is selected from 0). In some embodiments, n1 and n2 are equal (e.g., n1 and n2 are both selected from 0, or n1 and n2 are both selected from 1). In some embodiments, n1 and n2 are both selected from 0. In some embodiments, n1 and n2 are both selected from 1.

[0015] In some alternative embodiments, X1 and X2 are the same. In some specific embodiments, X1 and X2 are both selected from S. In some specific embodiments, X1 and X2 are both selected from O.

[0016] In some optional embodiments, the organic trisulfide compound is selected from (dimethyl trisulfide, CAS No. 3658-80-8), (Diallyl trisulfide, CAS No. 2050-87-5), (dibenzyl trisulfide, CAS No. 6493-73-8), (CAS number is 22948-20-5), (CAS number is 869811-23-4), (CAS No. 27639-73-2), , , , , , , , , , , , , and At least one of .

[0017] In some optional embodiments, the application is selected from any of the following: (I), promoting plant seed germination; and / or, (II), promoting the growth of plant shoots; and / or, (III), promoting plant root growth; and / or, (IV) Promote the development of plant seedlings.

[0018] In a second aspect, the present application provides a use of an organic trisulfide compound in preparing a plant growth promoter, wherein the organic trisulfide compound is as defined in the first aspect.

[0019] In a third aspect, the present application provides a plant growth promoter, which comprises an organic trisulfide compound; wherein the organic trisulfide compound is as defined in the first aspect.

[0020] In some optional embodiments, based on the plant growth promoter, the plant growth promoter includes an organic trisulfide compound (0.5-15) wt% (e.g., 0.5 wt%, 1.5 wt%, 2 wt%, 2.5 wt%, 3 wt%, 3.5 wt%, 4 wt%, 4.5 wt%, 5 wt%, 5.5 wt%, 6 wt%, 6.5 wt%, 7 wt%, 7.5 wt%, 8 wt%, 8.5 wt%, 9 wt%, 9.5 wt%, 10 wt%, 10.5 wt%, 11 wt% , 11.5wt%, 12wt%, 12.5wt%, 13wt%, 13.5wt%, 14wt%, 14.5wt% or 15wt%, etc.), dispersant (1-8)wt% (e.g., 1.5wt%, 2wt%, 2.5wt%, 3wt%, 3.5wt%, 4wt%, 4.5wt%, 5wt%, 5.5wt%, 6wt%, 6.5wt%, 7wt%, 7.5wt% or 8wt%, etc.), thickener (0.2-4)wt% (e.g., 0.2wt%, 0.5wt% , 1wt%, 1.5wt%, 2wt%, 2.5wt%, 3wt%, 3.5wt% or 4wt%, etc.), antifreeze (2-8)wt% (e.g. 2wt%, 2.5wt%, 3wt%, 3.5wt%, 4wt%, 4.5wt%, 5wt%, 5.5wt%, 6wt%, 6.5wt%, 7wt%, 7.5wt% or 8wt%, etc.), pH adjuster (0.1-2)wt% (e.g. 0.1wt%, 0.2wt%, 0.3wt%, 0.4wt%, 0.5wt%) t%, 0.6wt%, 0.7wt%, 0.8wt%, 0.9wt%, 1wt%, 1.1wt%, 1.2wt%, 1.3wt%, 1.4wt%, 1.5wt%, 1.6wt%, 1.7wt%, 1.8wt%, 1.9wt% or 2wt%, etc.) and water (66.9-94.4)wt% (e.g., 66.9wt%, 72wt%, 72.5wt%, 73.5wt%, 76.5wt%, 81.5wt%, 86.5wt% or 94.4wt%, etc.).

[0021] In some optional embodiments, the pH value of the plant growth promoter is selected from 4-7 (e.g., 4, 4.1, 4.2, 4.3, 4.4, 4.5, 4.6, 4.7, 4.8, 4.9, 5, 5.1, 5.2, 5.3, 5.4, 5.5, 5.6, 5.7, 5.8, 5.9, 6, 6.1, 6.2, 6.3, 6.4, 6.5, 6.6, 6.7, 6.8, 6.9 or 7, etc.).

[0022] In some optional embodiments, the dispersant is selected from at least one of a sulfonate anionic dispersant (eg, YUS-SXC dispersant), a polycarboxylate anionic dispersant (eg, YUS-WG5 dispersant or YUS-CH7000 dispersant, etc.).

[0023] In some optional embodiments, the dispersant is a mixture of a sulfonate anionic dispersant and a polycarboxylate anionic dispersant. In other optional embodiments, the dispersant is a mixture of a sulfonate anionic dispersant and a polycarboxylate anionic dispersant, wherein the weight ratio of the sulfonate anionic dispersant to the polycarboxylate anionic dispersant is 1:(3-5) (e.g., 1:3, 1:3.1, 1:3.2, 1:3.3, 1:3.4, 1:3.5, 1:3.6, 1:3.7, 1:3.8, 1:3.9, 1:4, 1:4.1, 1:4.2, 1:4.3, 1:4.4, 1:4.5, 1:4.6, 1:4.7, 1:4.8, 1:4.9 or 1:5, etc.). In some specific embodiments, the sulfonate anionic dispersant is selected from YUS-SXC dispersant. In some specific embodiments, the polycarboxylate anionic dispersant is selected from YUS-WG5 dispersant.

[0024] In some optional embodiments, the thickener is selected from at least one of xanthan gum, magnesium aluminum silicate, and hydroxyethyl cellulose. In some specific embodiments, the thickener is selected from xanthan gum.

[0025] In some optional embodiments, the antifreeze agent is selected from polyhydroxy antifreeze agents. Wherein, the polyhydroxy antifreeze agent is selected from at least one of 1,2-ethylene glycol (CAS No. 107-21-1), 1,2-propylene glycol (CAS No. 57-55-6), 1,3-propylene glycol (CAS No. 504-63-2) and 1,2,3-propanetriol (CAS No. 56-81-5). In some specific embodiments, the antifreeze agent is selected from 1,2-ethylene glycol.

[0026] In some optional embodiments, the pH value regulator is selected from organic acid pH value regulators. Further, the organic acid pH value regulator is selected from at least one of Baochan Kangquan 808, citric acid (CAS No. 77-92-9), citric acid monohydrate (CAS No. 5949-29-1), and glacial acetic acid (CAS No. 64-19-7). In some specific embodiments, the organic acid pH value regulator is selected from Baochan Kangquan 808.

[0027] This application has the following beneficial effects: First, by soaking plant seeds in a solution containing organic trisulfide compounds, it was found that it has a positive effect on promoting plant seed germination and sprout growth; and by spraying the seedlings with a solution containing organic trisulfide compounds, it was found that it can stimulate the growth of plant roots and promote the development and growth of seedlings.

[0028] Second, organic trisulfide compounds can increase crop yields. DETAILED DESCRIPTION

[0029] The present application discloses an application of an organic trisulfide compound in promoting plant growth. Those skilled in the art can refer to the content of this article and appropriately improve the process parameters to achieve it. It should be particularly noted that all similar substitutions and modifications are obvious to those skilled in the art, and they are all deemed to be included in this application. The methods and applications of this application have been described through preferred embodiments, and relevant personnel can obviously modify or appropriately change and combine the methods and applications described herein without departing from the content, spirit and scope of this application to implement and apply the technology of this application.

[0030] Terminology explanation: Unless otherwise indicated, the following definitions used herein shall apply. For purposes of this application, chemical elements are consistent with the Periodic Table of the Elements, CAS version, and Handbook of Chemistry and Physics, 75th edition, 1994. In addition, general principles of organic chemistry can be found in "Organic Chemistry", Thomas Sorrell, University Science Books, Sausalito: 1999, and "March's Advanced Organic Chemistry" by Michael B. Smith and Jerry March, John Wiley & Sons, New York: 2007, the entire contents of which are incorporated herein by reference.

[0031] As used herein, the term "halogen" or "halo" refers to any of the radio-stable atoms of column 7 of the periodic table, such as fluorine, chlorine, bromine or iodine.

[0032] In the present application, the terms "include" or "comprising" are open expressions, that is, including the contents specified in the present application, but not excluding other contents.

[0033] In this application, the term "alkyl" refers to a straight or branched alkane chain that is fully saturated (i.e., does not contain carbon-carbon double bonds or carbon-carbon triple bonds). The alkyl group can have 1 to 6 carbon atoms (whenever it appears in the text, a numerical range such as "1 to 6" refers to each integer in the given range; for example, "1 to 6 carbon atoms" means that the alkyl group can consist of 1 carbon atom, 2 carbon atoms, 3 carbon atoms, 4 carbon atoms, 5 carbon atoms, or 6 carbon atoms, but this definition also covers the term "alkyl" in which no numerical range is specified). By way of example only, "C 1-3 "Alkyl" means having one to three carbon atoms in the alkyl chain. 1-3 The alkyl group is selected from methyl, ethyl, propyl, isopropyl. The alkyl group may be substituted or unsubstituted.

[0034] In this application, the term "unsubstituted" means that the designated group bears no substituents.

[0035] In this application, the terms "substituted", "substituted" and "substituted" are used interchangeably to indicate that any one or more hydrogen atoms in a given structure are replaced by a specific substituent (e.g., C1-3 alkyl, C1-3 alkoxy or halogen), provided that the normal valence of the specified atom is not exceeded and the substitution produces a stable compound. Unless otherwise indicated, a substituted group may have a substituent substituted at each substitutable position of the group. When more than one position in a given structural formula can be substituted by one or more substituents selected from a specific group, then the substituents may be substituted at each substitutable position in the same or different manner.

[0036] In the present application, the terms "each... is independently selected from" and "... are each independently selected from" and "... are independently selected from" are interchangeable and should be understood in a broad sense. They can mean that in different groups, the specific options expressed by the same symbols do not affect each other, or that in the same group, the specific options expressed by the same symbols do not affect each other.

[0037] In this application, the term "stereoisomers" refers to compounds with the same chemical constitution, but different in the way the atoms or groups are arranged in space. Stereoisomers include enantiomers, diastereomers, conformers (rotamers), geometric isomers (cis / trans) isomers, atropisomers, etc.

[0038] In this application, the term "chiral" refers to a molecule that has the property of being non-superimposable on its mirror image; whereas "achiral" refers to a molecule that is superimposable on its mirror image.

[0039] As used herein, the term "enantiomers" refers to two isomers of a compound that are non-superimposable but mirror images of each other.

[0040] In this application, the term "diastereoisomer" refers to stereoisomers that have two or more chiral centers and whose molecules are not mirror images of each other. Diastereoisomers have different physical properties, such as melting points, boiling points, spectral properties and reactivity. Diastereomeric mixtures can be separated by high-resolution analytical procedures such as electrophoresis and chromatography, for example HPLC.

[0041] In this application, stereochemical definitions and conventions used generally follow SP Parker, Ed., McGraw-Hill Dictionary of Chemical Terms (1984) McGraw-Hill Book Company, New York; and Eliel, E. and Wilen, S., "Stereochemistry of Organic Compounds", John Wiley & Sons, Inc., New York, 1994.

[0042] In this application, the terms "optionally", "optional" or "optionally" generally mean that the subsequently described event or circumstance can but need not occur, and that the description includes instances where the event or circumstance occurs and instances where it does not occur.

[0043] Unless otherwise specified, all reagents used in this application were purchased from the market. Among them, Baochan Kangquan 808 was purchased from Liaoning Ruicao Biological Co., Ltd.

[0044] In order to make the purpose, technical solutions and advantages of the present application clearer, the implementation scheme of the present application will be further described in detail below in conjunction with examples.

[0045] Example 1, Preparation of organic trisulfide compounds: In this embodiment, Taking this as an example, the synthesis route is as follows: .

[0046] Sodium thiosulfate pentahydrate (4.99 g, 20 mmol, CAS No. 10102-17-7) was dissolved in 25% ethanol aqueous solution (60 mL), the temperature was raised to 60°C, and 4-chloromethylthiazole (2.67 g, 20 mmol, CAS No. 3364-76-9) was added dropwise at 60°C, and the reaction was continued to stir at 60°C for 1 hour, and the reaction was completed. The reaction system was cooled to (2-5)°C in an ice-water bath, 1,3-dimethyl-3,4,5,6-tetrahydro-2-pyrimidinone (3.5 mL, DMPU, CAS No. 7226-23-5) was added, and then a solution of sodium sulfide nonahydrate (2.45 g, 10 mmol) in water (10 mL) was slowly added dropwise, and stirred in an ice-water bath for 2 hours to produce a large amount of white precipitate. The stirring was stopped and the mixture was filtered to obtain an organic trisulfide compound 2q (2.56 g, yield 87.5%) as a white solid.

[0047] The present application adopts the same method to synthesize organic trisulfide compounds 2i, 2j, 2k, 2n, 2r, 2w, and 2m. The characterization data of the organic trisulfide compounds are shown in Table 1.

[0048] Table 1. Characterization data of organic trisulfide compounds: ;

[0049] Example 2: Evaluation of the effect of organic trisulfide compounds on seed germination and sprout growth: Wheat seeds with uniform growth and size were selected and randomly divided into 13 test groups (including 12 experimental groups and 1 blank control group), with 20 wheat seeds in each group.

[0050] The wheat seeds in the experimental group were soaked in a solution containing an organic trisulfide compound (5 mL) for 12 hours. The solution containing an organic trisulfide compound was prepared by dissolving the organic trisulfide compound (0.003 g) in dimethyl sulfoxide (0.5 mL) and diluting it to 5 mL with water; the concentration of the organic trisulfide compound was 600 ppm.

[0051] Wheat seeds in the blank control group were soaked in water (5 mL) for 12 h.

[0052] After that, 26 paper cups were prepared and holes were punched at the bottom of the paper cups; the same weight of vermiculite was poured into each paper cup, and the leech was moistened with water until water flowed out of the holes of the paper cups. Ten wheat seeds were planted in each paper cup, and after planting, the vermiculite was covered with about 5 mm thick on top of the wheat seeds. After 4 days, the germination of the wheat seeds was observed and the germination rate of the wheat seeds was calculated. The germination length of the germinated wheat seeds was measured and the average germination length of the germinated wheat seeds in the same test group was calculated. The results are shown in Table 1.

[0053] Table 2. Germination rate and average germination length of wheat seeds in each test group:

[0054] As can be seen from Table 2, the germination rates of experimental groups 1-11 were ≥90%, and the germination rate of experimental group 12 was slightly lower. However, in terms of germination length, experimental groups 1-12 were better than the blank control. Overall, experimental groups 3, 4, 7, 8, 9, and 11 had better promotion effects. It can be seen that organic trisulfide compounds can promote seed germination.

[0055] Example 3: Evaluation of the effect of organic trisulfide compounds on plant root growth and seedling development: Wheat seedlings with uniform growth were selected and randomly divided into 13 test groups (including 12 experimental groups and 1 blank control group).

[0056] The wheat seedlings in the experimental group were sprayed with a solution containing an organic trisulfide compound. The solution containing the organic trisulfide compound was prepared by dissolving the organic trisulfide compound (0.06 g) in dimethyl sulfoxide (1 mL) and diluting it to 100 mL with water; the concentration of the organic trisulfide compound was 600 ppm.

[0057] The wheat seedlings in the blank control group were sprayed with water.

[0058] Two weeks after the application of the pesticide, the growth of the wheat seedlings was observed, and 10 wheat seedlings were randomly selected from each test group. The seedling height of the wheat seedlings was measured and the average seedling height of the wheat seedlings in the same test group was calculated, and the root length of the wheat seedlings was measured and the average root length of the wheat seedlings in the same test group was calculated. The results are shown in Table 3.

[0059] Table 3. Average seedling height and average root length of wheat seedlings in each test group:

[0060] As can be seen from Table 3, the average seedling height of experimental groups 1-4 and 6-11 is better than that of the blank control group, and the average seedling height of experimental groups 5 and 12 is slightly lower than that of the blank control group; however, the average root length of experimental groups 1-12 is significantly better than that of the blank control group, and the root system is more developed. Overall, the promotion effect of experimental groups 3, 4, 5, 7, 8, 9, and 10 is better. This shows that organic trisulfide compounds can promote the growth of plant seedlings, especially make the root system of plant seedlings more developed.

[0061] Example 4, Preparation of plant growth promoter: In this embodiment, the ingredient list of the plant growth promoter is shown in Table 4.

[0062] Table 4, ingredient list of plant growth promoter:

[0063] The preparation process of the plant growth promoter is as follows: first, the organic trisulfide compound, YUS-SXC dispersant, YUS-WG5 dispersant, xanthan gum and ethylene glycol are mixed; then, Baochan Kangquan 808 is added and water is added to make up to 100g; finally, stirring is performed for 2 hours.

[0064] Example 5: Evaluation of the effect of plant growth promoters on plant seedling development: Wheat seedlings (about 10 cm in height) with uniform growth were selected and randomly divided into 13 test groups (including 12 experimental groups and 1 blank control group).

[0065] Preparation of a medicine containing a plant growth promoter: dilute the plant growth promoter with water to a concentration of 1.5 g (calculated as plant growth promoter) / L.

[0066] The wheat seedlings in the experimental groups 1-6 were sprayed with a pesticide containing plant growth promoter I.

[0067] The wheat seedlings in the experimental groups 7-12 were sprayed with a pesticide containing plant growth promoter II.

[0068] The wheat seedlings in the blank control group were sprayed with a pesticide containing plant growth promoter III.

[0069] One week after application, the growth of wheat seedlings was observed. Ten wheat seedlings were randomly selected from each test group and weighed, and the average weight was calculated. The results are shown in Table 5.

[0070] Table 5. Average weight of wheat seedlings in each test group:

[0071] As can be seen from Table 5, the experimental groups 1-12 are better than the blank control group in promoting the growth of plant seedlings. It can be seen that organic trisulfide compounds can promote the growth of plant seedlings, and as the content of organic trisulfide compounds in the plant growth promoter increases, the growth of plant seedlings first increases and then decreases. Among them, the promotion effect of organic trisulfide compounds in plant growth promoter I is 5wt% and 10wt%, and 10wt% is the best, but considering the cost and promotion effect, 5wt% is preferred. The best effect is achieved when the content of organic trisulfide compounds in plant growth promoter II is 5wt%.

[0072] In addition, the organic trisulfide compound 2q is superior to the organic trisulfide compound 2n in promoting the growth of plant seedlings.

[0073] Example 6, field experiment of plant growth promoter: In this embodiment, plant growth promoter II (the content of organic trisulfide compound 2q is 5 wt %) is selected for field experiment.

[0074] Preparation of a medicine containing a plant growth promoter: dilute the plant growth promoter with water to a concentration of 1.5 g (calculated as plant growth promoter) / L.

[0075] The specific experimental site was a wheat field in Jiangsu, with three acres of experimental land and three acres of control land.

[0076] The experimental site is three acres, and the agent containing plant growth promoter was sprayed once at around 10 am on April 5, 2023 and around 10 am on April 20, 2023, for a total of two sprayings, with 40g of plant growth promoter each time (equivalent to 5g of organic trisulfide compound each time).

[0077] Three acres of control land were not sprayed.

[0078] Ten days after the first spraying, it was observed that the test plot grew stronger than the control plot. By June, the wheat ears in the test plot were more numerous and fuller than those in the control plot. The harvest was mechanically harvested on June 10, 2023. The yield of the control plot was 414kg / mu, and the yield of the test plot was 468kg / mu, with an increase rate of 13%. This shows that organic trisulfide compounds can promote plant growth and increase crop yields.

[0079] The above is a detailed introduction to the application of an organic trisulfide compound provided by the present application in promoting plant growth. This article uses specific examples to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. It should be pointed out that for those skilled in the art, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. An application of an organic trisulfide compound in promoting plant growth; wherein: The organic trisulfide compound is selected from the structure shown in formula (I), or its tautomer, or its stereoisomer, or its pharmaceutically acceptable salt: ； Wherein, m1 and m2 are each independently selected from 0 or 1, and m1 and m2 are equal or unequal; n1 and n2 are each independently selected from 0 or 1, and n1 and n2 are equal or unequal; X1 and X2 are each independently selected from S or O, and X1 and X2 are the same or different; R1 and R2 are each independently selected from unsubstituted or substituted C 1-6 Alkyl, unsubstituted or substituted C 2-6 Alkenyl, unsubstituted or substituted C 5-10 Aryl or unsubstituted or substituted C 3-10 Heterocyclic aromatic group; wherein 1, 2, 3 or more hydrogen atoms in R1 and / or R2 are optionally replaced by halogen, -CN, -OH, -SH, -NH2, -C 1-3 Alkyl, -OC 1-3 Alkyl, -OC 1-3 Alkenyl, -OC 1-3 Alkynyl, -SC 1-3 Alkyl, -SC 1-3 Alkenyl or -SC 1-3 and R1 and R2 are the same or different.

2. The use according to claim 1, characterized in that: m1 and m2 are equal.

3. The use according to any one of claims 1 to 2, characterized in that: R1 and R2 are each independently selected from unsubstituted or substituted C 2-6 wherein one, two, three or more hydrogen atoms in R1 and / or R2 are optionally replaced by halogen, -CN or -C 1-3 Alkyl substitution.

4. The use according to claim 1, characterized in that: R1 and R2 are the same.

5. The use according to claim 1, characterized in that: n1 and n2 are equal.

6. The use according to claim 1, characterized in that: The organic trisulfide compound is selected from , , , , , , , , , , , , , , , , , and At least one of .

7. The use according to claim 1, characterized in that: The application is selected from any of the following: (I), promoting plant seed germination; and / or, (II), promoting the growth of plant shoots; and / or, (III) promoting plant root growth; and / or, (IV) Promote the development of plant seedlings.

8. Use of an organic trisulfide compound in the preparation of a plant growth promoter, wherein: The organic trisulfide compound is as defined in any one of claims 1 to 6.

9. A plant growth promoter, characterized in that The plant growth promoter comprises an organic trisulfide compound; wherein the organic trisulfide compound is as defined in any one of claims 1 to 6.

10. The plant growth promoter according to claim 9, characterized in that Taking the plant growth promoter as a benchmark, the plant growth promoter comprises an organic trisulfide compound (0.5-15) wt%, a dispersant (1-8) wt%, a thickener (0.2-4) wt%, an antifreeze agent (2-8) wt%, a pH regulator (0.1-2) wt% and water (66.9-94.4) wt%.

11. The plant growth promoter according to any one of claims 9 to 10, characterized in that The pH value of the plant growth promoter is selected from 4-7.

12. The plant growth promoter according to claim 10, characterized in that The dispersant is selected from at least one of a sulfonate anionic dispersant and a polycarboxylate anionic dispersant; And / or, the thickener is selected from at least one of xanthan gum, magnesium aluminum silicate, and hydroxyethyl cellulose; And / or, the antifreeze agent is selected from polyhydroxy antifreeze agents, and the polyhydroxy antifreeze agent is selected from at least one of 1,2-ethylene glycol, 1,2-propylene glycol, 1,3-propylene glycol and 1,2,3-propanetriol; And / or, the pH regulator is selected from organic acid pH regulators, and the organic acid pH regulator is selected from at least one of Baochan brand Kangquan 808, citric acid, and acetic acid.

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