Plant growth regulator composition for improving lodging resistance of wheat and application thereof

Abstract

The invention provides a plant growth regulator composition for improving lodging resistance of wheat and application of the plant growth regulator composition, belongs to the technical field of plant growth regulator compositions, and can solve the problem that lodging of wheat is not effectively solved. The plant growth regulator composition for improving the lodging resistance of the wheat comprises effective components A and B, and the weight ratio of the effective component A to the effective component B is (20: 1)-(100: 1); wherein the effective component A is trinexapac-ethyl, and the effective component B is indolebutyric acid or a derivative thereof. The method can be applied to the aspect of wheat lodging resistance, can remarkably improve the sturdy degree and root length of wheat roots, promotes the growth of the wheat roots, improves the lodging resistance of wheat, and is safe to wheat, environmentally friendly and low in application cost.

Description

Technical Field

[0001] The invention belongs to the technical field of plant growth regulator compositions, and in particular relates to a plant growth regulator composition for improving lodging resistance of wheat and an application thereof. Background Art

[0002] Lodging refers to the phenomenon that upright crops become crooked in patches or even fall to the ground. Lodging mostly occurs in the middle and late stages of crop growth, which can reduce crop yield and quality and make harvesting difficult. The earlier wheat lodging occurs after jointing, the greater the impact on yield. Once large-scale lodging occurs, it will cause serious losses in yield and a significant decline in crop quality, while also significantly increasing harvesting costs. According to incomplete statistics, crop lodging causes losses of about billions of dollars worldwide each year.

[0003] As a gibberellin biosynthesis inhibitor, trinexapac-ethyl controls the vigorous growth of crops by reducing the content of gibberellin. Trinexapac-ethyl can be quickly absorbed and conducted by plant stems and leaves, which can promote the synthesis and distribution of auxin in plants, thicken the cell walls of stems, and make the connections between cells tighter, thereby improving the mechanical strength of stems. At the same time, trinexapac-ethyl can also regulate the photosynthesis and transpiration of plants, making plants stronger during growth. Indolebutyric acid is an endogenous auxin in plants, mainly used as a rooting agent for cuttings, and can also be used for flushing, drip irrigation, flushing fertilizer synergist, foliar fertilizer synergist, and plant growth regulator. Indolebutyric acid can enter the plant body through leaves, tender epidermis of plants, and seeds, promote cell division and cell proliferation, accelerate root growth and development, promote tillering and strong seedlings, and strengthen plants.

[0004] When trinexapac-ethyl is used alone, it mainly improves the mechanical strength of wheat stems; when indolebutyric acid is used alone, it mainly promotes cell elongation, induces and promotes cell differentiation, controls apical dominance, and promotes the formation of lateral roots and adventitious roots. At present, the main way to achieve lodging resistance in production is to spray chlormequat to reduce the height of the plant, which cannot fundamentally solve the lodging problem. There are no related literature reports on the use of trinexapac-ethyl and indolebutyric acid in combination for wheat lodging resistance.

[0005] Therefore, those skilled in the art need to provide a plant growth regulator composition for improving lodging resistance of wheat. Summary of the invention

[0006] The present invention aims at the technical problem that wheat lodging has not been effectively solved, and proposes a plant growth regulator composition for improving the lodging resistance of wheat, which can significantly improve the thickness and length of the root system, promote the growth and expansion of the wheat root system, promote the elongation of the main root, promote rooting, and make the root system thicker, and improve the lodging resistance of wheat. The plant growth regulator composition is safe for wheat, friendly to the environment, has low application cost, and has huge social benefits. The plant growth regulator composition is applied to wheat lodging resistance, can reduce the risk of wheat lodging for farmers, reduce losses, and increase income.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is: a plant growth regulator composition for improving wheat lodging resistance, wherein the active ingredients are composed of A and B, and the weight ratio of the active ingredient A to the active ingredient B is (20:1) to (100:1); wherein the active ingredient A is trinexapac-ethyl, and the active ingredient B is indolebutyric acid or its derivatives. It can be understood that according to actual conditions, those skilled in the art can adjust the weight ratio of the active ingredient A to the active ingredient B within the above range, for example, the weight ratio of the active ingredient A to the active ingredient B can also be 20:1, 25:1, 33:1, 40:1, 50:1, 60:1, 65:1, 75:1, 80:1, 100:1 or any point value within the above range.

[0008] Preferably, the active ingredient B is indolebutyric acid, indolebutyric acid potassium salt or indolebutyric acid sodium. Indolebutyric acid can also be converted into other salts through acid-base reaction during preparation of the preparation.

[0009] Preferably, the weight percentage of active ingredient A and active ingredient B in the plant growth regulator composition for improving wheat lodging resistance is 1% to 90%. It is understandable that the content of active ingredients A and B in the plant growth regulator composition for improving wheat lodging resistance of the present invention depends on the application amount when used alone, the mixing ratio of one compound to another compound and the degree of synergistic effect, and is also related to the objective environment. Usually, the weight percentage of the active ingredient in the composition is 0.01% to 90% of the total weight, preferably 0.1% to 80%. Depending on the type of preparation, the range of active ingredient content is different. Usually, the liquid preparation contains 0.1% to 50% of the active substance by weight, preferably 0.5% to 20%; the solid preparation contains 0.1% to 80% of the active substance by weight, preferably 0.1% to 50%.

[0010] Preferably, the weight percentage of the active ingredient A and the active ingredient B in the plant growth regulator composition for improving the lodging resistance of wheat is 10% to 60%.

[0011] Preferably, the plant growth regulator composition for improving wheat lodging resistance of the present invention also includes auxiliary components, which include carriers and adjuvants; the carrier is at least one of a solvent and a filler; the adjuvant includes at least one surfactant. The solvent includes at least one of water, mineral oil, kerosene, diesel, vegetable oil, animal oil, aliphatic, cyclic hydrocarbons, aromatic hydrocarbons, alcohols, ketones, esters, and amides. Preferably, water is deionized water; vegetable oil is soybean oil, corn oil, and methyl oleate; aliphatic is paraffin; aromatic hydrocarbons are at least one of toluene and xylene; alcohols are at least one of ethanol, methanol, propanol, butanol, and cyclohexanol; ketones are cyclohexanone; esters are at least one of lactic acid esters and carbonates; amides are at least one of N-methylpyrrolidone and fatty acid dimethylamide. The filler is selected from at least one of kaolin, diatomaceous earth, bentonite, attapulgite, white carbon black, starch, and light calcium carbonate.

[0012] Preferably, the added amount of the surfactant is 2% to 30% of the total weight of the composition.

[0013] Preferably, the surfactant is selected from at least one of an emulsifier, a dispersant, a stabilizer, a wetting agent, a binder, and a defoamer. Among them, the emulsifier is selected from at least one of Nongru 500# (calcium dodecylbenzene sulfonate), tristyrylphenol polyoxyethylene ether, 600# phosphate (phenylphenol polyoxyethylene ether phosphate), styrene polyoxyethylene ether ammonium sulfate, alkyl biphenyl ether disulfonic acid magnesium salt, triethanolamine salt, Nongru 400# (benzyl dimethylphenol polyoxyethyl ether), Ningru 36# (phenylethylphenol formaldehyde resin polyoxyethyl ether), Nongru 1600# (phenylethylphenol polyoxyethyl polypropylene ether), ethylene oxide-propylene oxide block copolymer, BY series (castor oil polyoxyethylene ether), Nongru 33# (alkyl aryl polyoxyethylene polyoxypropylene ether), Span series (sorbitan monostearate), Tween series (dehydrated sorbitan fatty acid ester polyoxyethylene ether) or AEO series (fatty alcohol polyoxyethylene ether). The dispersant is selected from at least one of polycarboxylates, lignin sulfonates, alkylphenol polyoxyethylene ether formaldehyde condensate sulfates, alkylbenzene sulfonate calcium, naphthalenesulfonic acid formaldehyde condensate sodium salts, alkylphenol polyoxyethylene ethers, fatty amine polyoxyethylene ethers, fatty acid polyoxyethylene ethers, or glycerol fatty acid ester polyoxyethylene ethers. The stabilizer is selected from at least one of epoxy soybean oil, epichlorohydrin, BHT, ethyl acetate, or triphenyl phosphate. The wetting agent is selected from at least one of sodium dodecyl sulfate, sodium dodecylbenzene sulfonate, pull-opening powder BX, wetting penetrant F, saponin powder, silkworm excrement, or soapberry powder.

[0014] Preferably, the auxiliary agent also includes at least one functional auxiliary agent selected from antifreeze, permeation agent, thickener, disintegrant, defoamer, and pH regulator. Among them, the antifreeze agent is selected from at least one of ethylene glycol, propylene glycol, glycerol or urea. The permeation agent is selected from at least one of permeation agent JFC (fatty alcohol polyoxyethylene ether), permeation agent T (maleic acid diisooctyl ester sulfonate), azone or silicone. The thickener is selected from at least one of gelatin, sodium carboxymethyl cellulose, hydroxyethyl cellulose, sodium polyacrylate, modified starch, xanthan gum, bentonite, silicon dioxide or magnesium aluminum silicate. The disintegrant is selected from at least one of bentonite, urea, ammonium sulfate, aluminum chloride, low-substituted hydroxypropyl cellulose, lactose, citric acid, succinic acid or sodium bicarbonate. The defoamer is selected from at least one of silicone oil, silicone compounds, C10-C20 saturated fatty acid compounds or C8-C10 fatty alcohol compounds. The pH adjuster is selected from at least one of citric acid, sodium citrate, urea, acetic acid, triethanolamine, citric acid, sodium bicarbonate, and sodium carbonate.

[0015] The above-mentioned raw materials can all be purchased commercially.

[0016] Preferably, the dosage form of the plant growth regulator composition for improving wheat lodging resistance of the present invention is one of soluble solution, wettable powder, water dispersible granule, water suspension, emulsifiable concentrate, water emulsion, microemulsion, suspoemulsion and dispersible oil suspension.

[0017] The composition of the present invention comprises the following components and contents when it is made into a soluble solution: 0.01% to 30% of trinexapac-ethyl, 0.01% to 30% of indolebutyrate, 2% to 50% of a solvent, 1% to 10% of a wetting agent, 1% to 20% of an emulsifier, 0% to 8% of an antifreeze agent, 0.01% to 2% of a defoaming agent, 0.01% to 50% of caustic soda flakes, and deionized water added to 100%.

[0018] The composition comprises the following components and contents when made into wettable powder: 0.01% to 80% of trinexapac-ethyl, 0.01% to 80% of indolebutyric acid or indolebutyric acid salt, 1% to 12% of dispersant, 1% to 8% of wetting agent, and the balance is filler.

[0019] The composition comprises the following components and contents when made into water dispersible granules: 0.01% to 80% of trinexapac-ethyl, 0.01% to 80% of indolebutyric acid or indolebutyric acid salt, 1% to 12% of dispersant, 1% to 8% of wetting agent, 1% to 10% of disintegrant, 0% to 8% of binder, and the balance is filler.

[0020] The composition comprises the following components and contents when it is made into a suspension: 0.01% to 50% of trinexapac-ethyl, 0.01% to 50% of indolebutyric acid or indolebutyric acid salt, 1% to 10% of a dispersant, 1% to 10% of a wetting agent, 0.01% to 2% of a defoamer, 0% to 2% of a thickener, 0% to 8% of an antifreeze agent, and deionized water added to 100%.

[0021] The composition comprises the following components and contents when it is made into emulsifiable concentrate: 0.01% to 30% of trinexapac-ethyl, 0.01% to 30% of indolebutyric acid or indolebutyric acid salt, 1% to 20% of emulsifier, and the solvent is added to 100%.

[0022] The composition comprises the following components and contents when prepared into an aqueous emulsion: 0.01% to 30% of trinexapac-ethyl, 0.01% to 30% of indolebutyric acid or indolebutyric acid salt, 1% to 50% of a solvent, 1% to 15% of an emulsifier, 0% to 8% of an antifreeze agent, 0.01% to 2% of a defoaming agent, 0% to 2% of a thickener, and deionized water added to 100%.

[0023] The composition comprises the following components and contents when prepared into a microemulsion: 0.01% to 30% of trinexapac-ethyl, 0.01% to 30% of indolebutyric acid or indolebutyric acid salt, 3% to 25% of an emulsifier, 1% to 50% of a solvent, 0% to 8% of an antifreeze agent, 0.01% to 2% of a defoaming agent, and deionized water added to 100%.

[0024] The composition comprises the following components and contents when it is made into a dispersible oil suspension: 0.01% to 50% of trinexapac-ethyl, 0.01% to 50% of indolebutyric acid or indolebutyric acid salt, 1% to 20% of emulsifier, 1% to 10% of dispersant, 0.01% to 2% of defoamer, 0% to 5% of thickener, and methyl oleate or other oils such as soybean oil, rapeseed oil, corn oil, etc. are continuously added to 100%.

[0025] The main technical indicators of the various formulations described in the present invention all comply with the requirements of relevant standards such as NY / T 2989-2016- "Specifications for the Development of Pesticide Registration Product Specifications".

[0026] Another aspect of the present invention provides the use of the plant growth regulator composition for improving the lodging resistance of wheat, which is applied to the lodging resistance of wheat.

[0027] Compared with the prior art, the advantages and positive effects of the present invention are:

[0028] The plant growth regulator composition for improving the lodging resistance of wheat provided by the present invention uses trinexapac-ethyl and indolebutyric acid in combination in a specific ratio, has a synergistic effect, is safe for wheat, can significantly control the growth of strong stalks, enhance the growth and development of the root system, promote the elongation of the taproot, promote rooting, and make the root system thicker, thereby enhancing the lodging resistance effect of wheat and improving the quality and yield at the same time. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In order to more clearly and in detail introduce the plant growth regulator composition for improving the lodging resistance of wheat provided in the embodiments of the present invention and its application, it will be described in conjunction with specific embodiments below.

[0031] The effects of trinexapac-ethyl and indolebutyric acid on the growth and development of wheat roots were determined by combining them in different ratios using a biological activity assay (see standard NY / T2061.2-2011). The specific test method is as follows:

[0032] The selected wheat seeds of similar shape and size were planted in pots of the same size (10 cm in diameter), the soil moisture was adjusted to 65%, 10 seeds were planted in each pot, and a total of 108 pots were planted. After planting, a layer of nutrient soil was sprinkled on top, and the seeds were moved into an artificial climate box with adjustable light, temperature and humidity, and watered uniformly and quantitatively according to needs.

[0033] Two single-dose soluble preparations of trinexapac-ethyl and indolebutyric acid were prepared according to the following scheme:

[0034] Trinexapac-ethyl single-dose soluble preparation: 1% trinexapac-ethyl, 5% Tween 80, make up to 100% with water to prepare 1% trinexapac-ethyl soluble preparation;

[0035] Indolebutyric acid single-dose soluble solution: indolebutyric acid 1%, flake caustic soda (sodium hydroxide) 0.2%, Tween 80 5%, water is added to 100%, and a 1% indolebutyric acid soluble solution is prepared.

[0036] Take trinexapac-ethyl single soluble agent and indolebutyric acid single soluble agent to prepare 5 concentration gradients of single agent and compound preparation of plant growth regulator dilution solutions according to Table 1 below, and each preparation ratio corresponds to 3 pots of pesticides. The specific preparation composition ratio is shown in Table 1.

[0037] After the first true leaf grows out, spray the roots, spray once after 7 days, spray once after 14 days, and spray 3 times in total. Ensure uniform spraying each time, and control the amount of dilution sprayed in each pot at 20 ml. The sampling time is uniformly set at 8 am, 7 days after each spraying. The first sampling: sampling 7 days after the first spraying, randomly select 1 pot, and then spray the second time after sampling; the second sampling: 7 days after the second spraying, the sampling method is the same as the first time, and the third spraying is carried out after sampling; the third sampling: 7 days after the third spraying, the sampling method is the same as the first time; after sampling, the root length, root number, and aboveground height are measured respectively to evaluate the increasing effect of the mixture of trinexapac-ethyl and indolebutyric acid on wheat growth. The specific measurement results are shown in Table 2.

[0038] Increase rate (%) = {(growth at the end of the period - growth at the beginning of the period) / growth at the beginning of the period} × 100%

[0039] Table 1 Examples 1-16 and Comparative Examples 1-11

[0040]

[0041]

[0042] Table 2 Effects of Examples 1-16 and Comparative Examples 1-11 on Wheat Growth

[0043]

[0044]

[0045]

[0046] As can be seen from the above, Comparative Example 1 is a clear water control group. Compared with other comparative examples and embodiments, the root length growth rate and the root number growth rate are both increased less; Comparative Examples 2-6 are single-dose soluble preparations of trinexapac-ethyl. When trinexapac-ethyl is used alone, trinexapac-ethyl has a significant effect on promoting root lengthening, but a general effect on increasing the number of roots; Comparative Examples 7-11 are single-dose soluble preparations of indolebutyric acid. The use of indolebutyric acid alone has a significant effect on increasing the number of roots, but a general effect on root lengthening; Examples 1-16 are compounded with trinexapac-ethyl and indolebutyric acid. When the two are compounded and used in a certain proportion, they promote each other. Whether it is root lengthening or root number increasing, the effect is more prominent than when used alone, and the thickening and growth of wheat roots are all promoted very well, especially when the weight ratio of trinexapac-ethyl to indolebutyric acid is (20:1) to (100:1), the synergistic effect is most obvious. In summary, the combination of antinexapac-ethyl and indolebutyric acid does have a significant promoting effect on the root growth of wheat, thereby significantly improving the lodging resistance of wheat.

[0047] The above-described embodiments are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations, modifications, evolutions, and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the scope of protection determined by the claims of the present invention.

Claims

1. A plant growth regulator composition for improving lodging resistance of wheat, characterized in that: The active ingredients are composed of A and B, and the weight ratio of the active ingredients A to the active ingredients B is (20:1) to (100:1); wherein the active ingredient A is trinexapac-ethyl, and the active ingredient B is indolebutyric acid or its derivatives.

2. The plant growth regulator composition for improving lodging resistance of wheat according to claim 1, characterized in that: The active ingredient B is indolebutyric acid, indolebutyric acid potassium salt or indolebutyric acid sodium.

3. The plant growth regulator composition for improving lodging resistance of wheat according to claim 1, characterized in that: The weight percentage of the active ingredient A and the active ingredient B in the plant growth regulator composition for improving the lodging resistance of wheat is 1% to 90%.

4. The plant growth regulator composition for improving lodging resistance of wheat according to claim 3, characterized in that: The weight percentage of the active ingredient A and the active ingredient B in the plant growth regulator composition for improving the lodging resistance of wheat is 10% to 60%.

5. The plant growth regulator composition for improving lodging resistance of wheat according to claim 1, characterized in that: The plant growth regulator composition for improving wheat lodging resistance also includes auxiliary components, which include carriers and adjuvants; the carrier is at least one of a solvent and a filler; and the adjuvant includes at least one surfactant.

6. The plant growth regulator composition for improving lodging resistance of wheat according to claim 5, characterized in that: The added amount of the surfactant is 2% to 30% of the total weight of the composition.

7. The plant growth regulator composition for improving lodging resistance of wheat according to claim 5, characterized in that: The surfactant is selected from at least one of an emulsifier, a dispersant, a stabilizer, a wetting agent, a binder, and a defoaming agent.

8. The plant growth regulator composition for improving lodging resistance of wheat according to claim 5, characterized in that: The auxiliary agent also includes at least one of an antifreeze agent, a penetrant, a thickener, a disintegrant, a defoaming agent, and a pH regulator.

9. The plant growth regulator composition for improving lodging resistance of wheat according to any one of claims 1 to 8, characterized in that: The dosage form of the plant growth regulator composition for improving wheat lodging resistance is one of soluble solution, wettable powder, water dispersible granule, water suspension, emulsifiable concentrate, water emulsion, microemulsion, suspoemulsion and dispersible oil suspension.

10. The use of the plant growth regulator composition for improving lodging resistance of wheat according to any one of claims 1 to 8, characterized in that: Used for wheat lodging resistance.

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