CN115868490B

CN115868490B - Application of plant growth regulator containing trifluralin or preparation thereof in shaping cotton branches, topping cotton or controlling fruit tree tips

Info

Publication number: CN115868490B
Application number: CN202111165341.0A
Authority: CN
Inventors: 徐小燕; 贾京京; 郭世俭; 许仙波; 章永林; 张钟炎; 穆海萍; 张卓亚; 章振; 周月婷; 杨景志
Original assignee: Heli Technology Co ltd
Current assignee: Heli Technology Co ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2024-08-09
Anticipated expiration: 2041-09-30
Also published as: CN115868490A

Abstract

The invention provides an application of a plant growth regulator containing trifluralin or a preparation thereof in cotton pruning and shaping, cotton topping or fruit tree tip control, and relates to the technical field of phytochemistry control. In the application, the plant growth regulator or the preparation thereof takes the amisulpride as an active ingredient, and can effectively inhibit the growth of the top core of cotton, reduce the number of nutrition branches, shorten the length of the nutrition branches and shape good plant types when being applied to the pruning and shaping of cotton; when the compound fertilizer is applied to cotton topping, topping is thorough, the dosage is low, the compound fertilizer is safe to other existing tissues of cotton, and the compound fertilizer can promote the transformation from vegetative growth to reproductive growth, thereby improving the cotton yield; meanwhile, the whole-process mechanization level of cotton can be improved, and the labor efficiency is improved; when the compound fertilizer is applied to the tip control of fruit trees, the compound fertilizer can inhibit the growth of redundant fruit branches, is safe to the fruit trees, has long lasting period, can improve the yield, saves labor and time, and is beneficial to large-scale planting.

Description

Application of plant growth regulator containing trifluralin or preparation thereof in shaping cotton branches, topping cotton or controlling fruit tree tips

Technical Field

The invention relates to the technical field of phytochemistry control, in particular to an application of a plant growth regulator containing trifluralin or a preparation thereof in cotton pruning and shaping, cotton topping or fruit tree topping control.

Background

Cotton is one of the main economic crops in China, and the position of cotton in national economic development is important. Cotton is a warm-loving crop with infinite growth habit, and in order to fully utilize effective accumulated temperature and reproductive growth, promote nutrition transformation and reduce the occurrence of ineffective bolls, when cotton enters a certain growth stage (about the boll stage), topping is required. Cotton topping is a key link in the cotton cultivation process, and directly affects yield and quality. The traditional topping is to manually pinch off the growing points of the main stems of the cotton, which is labor-consuming and time-consuming, has low labor efficiency, and is easy to scratch and drop She Ling due to manual topping, and meanwhile, the problems of missing topping, repeated topping, high cost and the like are also solved.

Cotton topping machines are used for cotton topping in some cotton areas in China. There are reports that 7 lunar stone university electromechanical institute Hu in 2020 teaches mechanical topping and viewing (Xinjiang agricultural machinery, 2020 (4) 41) of organization in Tacheng area, and suspension type mechanical topping is adopted by vertical profiling technology, but the topping is still not accurate enough, and the damage to buds and bolls of cotton plants is easy to cause.

In recent years, chemical topping technology has been studied well. The main components of the topping agent in the market at present are flumetralin, mepiquat chloride, chlormequat chloride and mepiquat chloride-containing series, but each topping agent has advantages and disadvantages, the flumetralin treatment is unsafe for cotton and damages to young buds (soil fertilizers, 2017 (7) 26-27), the dosage is large (the dosage of the active ingredients is 937.5 g/hectare), and the topping agent is easy to regrow in the later period (stone river sub-technology, 2018 (2) 1-2, 5); the mepiquat chloride effect is unstable, and can easily lead to premature senility of cotton, and the capping is not thorough and rebound easily (cotton theory report, 2011,23 (4): 329-333).

The tip control of fruit trees is a key link of fruit tree cultivation, and crops such as citrus, mango, litchi, apple, pear and the like all need to be controlled to promote nutrition transformation and improve fruit quality. The traditional control pin is manually trimmed, so that the effect is good, but new pins are raised again about 10 days after trimming, repeated trimming is needed for 3-4 times, the speed is low, the workload is high, the cost is high, labor and time are wasted, and particularly, the current large orchard formed by the reduction of the number of farmers in rural areas and the land circulation is difficult to implement. At present, chemical agents such as multi-purpose paclobutrazol, uniconazole, flumetralin, chlormequat chloride, prohexadione calcium and the like are used for controlling the growth of tender tips through leaf surface spraying and root burying, but the problems of incomplete tip control, unstable using effect and the like still exist.

In view of the above, the present invention is specifically proposed to solve at least one of the above technical problems.

Disclosure of Invention

The invention aims to provide an application of a plant growth regulator containing ammonia trifluralin or a preparation thereof in cotton pruning and shaping, cotton topping or fruit tree tip control.

In order to achieve the above object, the technical scheme of the present invention is as follows:

the invention provides an application of a plant growth regulator containing trifluralin or a preparation thereof in cotton pruning and shaping, cotton topping or fruit tree tip control.

Furthermore, on the basis of the technical scheme, the plant growth regulator comprises the following components in percentage by mass:

0.1 to 99 percent of the trifluralin and 1 to 99.9 percent of the auxiliary agent and/or the filler.

40-65% of trifluralin and 35-60% of auxiliary agent and/or filler.

Further, on the basis of the technical scheme, the auxiliary agent comprises any one or a combination of at least two of wetting agent, dispersing agent, thickening agent, solvent, antifreezing agent, defoaming agent and preservative.

Furthermore, on the basis of the technical scheme, the formulation of the plant growth regulator preparation comprises any one of suspending agent, suspending emulsion, emulsifiable concentrate, wettable powder, water aqua, water dispersible granule, aqueous emulsion, microemulsion or granule;

Preferably, the plant growth regulator preparation is in the form of a suspending agent or water dispersible granule.

1-80% of ammonia fluorine colaling,

0.1 To 20 percent of wetting agent,

0.1 To 20 percent of dispersing agent,

The filler is filled up to 100 percent;

The plant growth regulator preparation is water dispersible granules.

1 to 50 percent of ammonia fluorine colaling,

0.1 To 10 percent of wetting agent,

0.1 To 10 percent of dispersing agent,

0.1 To 10 percent of antifreezing agent,

0.01-10% Of thickening agent,

0.01 To 1 percent of preservative,

0.01 To 1 percent of defoaming agent,

The water is used for supplementing the balance to 100 percent;

The plant growth regulator preparation is in the form of suspending agent.

Furthermore, on the basis of the technical scheme, the plant growth regulator or the preparation thereof is used in the bud period of cotton when being used for shaping and pruning cotton;

preferably, the plant growth regulator or the preparation thereof is used in a dosage of 20-300 gai/ha.

Furthermore, on the basis of the technical scheme, when the plant growth regulator or the preparation thereof is used for topping cotton, the plant growth regulator or the preparation thereof is used in the bud period and the boll period of cotton, and stem and leaf spraying is adopted to uniformly spray the cotton topping cores and leaves;

Preferably, the plant growth regulator or the preparation thereof is used in a dosage of 20-500 gai/ha.

Furthermore, on the basis of the technical scheme, when the plant growth regulator or the preparation thereof is used for controlling the tips of the fruit trees, the plant growth regulator or the preparation thereof is used in the bud and germination periods of the tender tips of the fruit trees, and the stem and leaf spray is adopted to uniformly spray on each branch tip;

Preferably, the plant growth regulator or the preparation thereof is used in a dosage of 50-1000 gai/ha.

Compared with the prior art, the invention has the following beneficial effects:

The invention provides an application of a plant growth regulator containing trifluralin or a preparation thereof in cotton pruning and shaping, cotton topping or fruit tree tip control;

Specifically, when the plant growth regulator containing the trifluralin or the preparation thereof is applied to pruning and shaping of cotton, the growth of the top centers of the cotton can be inhibited, the number of nutrition branches is reduced, the length of the nutrition branches is shortened, good plant types are molded, and the dosage is only about 10% of that of a control medicament;

When the plant growth regulator containing the trifluralin or the preparation thereof is applied to cotton topping, the topping is thorough, the dosage is low, the plant growth regulator is safe to other existing tissues of cotton, and can promote the transformation of vegetative growth to reproductive growth, thereby improving the cotton yield, and the dosage is only about 20% of that of a control medicament; meanwhile, the whole-process mechanization level of cotton can be improved, the labor efficiency is improved, the labor investment is reduced, the cost is reduced, and the income of peasants is improved;

when the plant growth regulator containing the trifluralin or the preparation thereof is applied to the tip control of fruit trees, the growth of redundant fruit branches can be inhibited, the plant growth regulator is safe to the fruit trees, has long lasting period, can improve the yield, saves labor and time, is beneficial to large-scale planting, and the dosage is only about 30% of that of a control medicament.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to examples, but it will be understood by those skilled in the art that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention. The specific conditions are not noted in the examples and are carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or apparatus used were conventional products commercially available without the manufacturer's attention.

The trifluralin (also known as aminopropofloxacin) is a dinitroaniline compound, and the application disclosed at present is herbicide, belongs to a selective pre-emergence soil sealing agent, and is ineffective for the weeds which are already in soil and are propagated by roots and stems of the weeds by inhibiting the formation of a sprouted seed spindle body mainly through the absorption of germs and hypocotyls of the weeds after the pesticide forms a pesticide soil layer on the surface layer of the soil. Currently, the method is mainly applied to lawn weeding in a commercial mode. However, the applicant has unexpectedly found that the bifenthrin known as a herbicide can be used as an active ingredient of a plant growth regulator and has a good effect on shaping cotton, topping cotton or controlling the tips of fruit trees, and has thus proposed the present invention.

The invention provides an application of a plant growth regulator containing trifluralin or a preparation thereof in cotton pruning and shaping, cotton topping or fruit tree tip control. Because the ammofloxaprid can inhibit plant cell division, the cell division is an essential physiological process for growth of plant new buds, when the cell division is inhibited, terminal buds and axillary buds cannot develop, so that the effect of breaking the top end advantage of plants and inhibiting the growth of the axillary buds is achieved.

The plant growth regulator or the trifluralin in the plant growth regulator preparation is used as an active ingredient. When the plant growth regulator or the preparation thereof is applied to shaping cotton, the growth of cotton top cores can be inhibited, the number of nutrition branches is reduced, the length of the nutrition branches is shortened to control the nutrition growth, good plant types are molded, and the dosage is only about 10% of that of a control medicament.

When the plant growth regulator containing the trifluralin or the preparation thereof is applied to cotton topping, topping is thorough, the dosage is low, the plant growth regulator is safe to other existing tissues of cotton, and can promote the transformation of vegetative growth to reproductive growth, thereby improving the cotton yield, and the dosage is only about 20% of that of a control medicament; meanwhile, the whole-process mechanization level of cotton can be improved, the labor efficiency is improved, the labor input is reduced, the cost is reduced, and the income of peasants is improved.

When the plant growth regulator containing the trifluralin or the preparation thereof is applied to the tip control of fruit trees, the growth of redundant fruit branches can be inhibited, the plant growth regulator is safe to the fruit trees, the lasting period is long, the yield can be improved, labor and time are saved, the large-scale planting is facilitated, and the dosage is only about 30% of that of a control medicament.

The source of the trifluralin is not particularly limited, and it is commercially available, and it can be prepared by the already disclosed preparation methods (for example, US 3764623, US 3966816, CN 101723839B).

As an alternative embodiment of the present invention, the plant growth regulator comprises the following components in mass fraction:

The typical but non-limiting amounts of trifluralin are 0.1%, 0.5%, 1%, 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 98% or 99%, preferably including 40-65%.

The auxiliary agent and/or the filler means that the plant growth regulator can comprise only the auxiliary agent or only the filler, and can also comprise both the auxiliary agent and the filler. The auxiliary agents and/or fillers are typically used in an amount of, but not limited to, 1%, 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 99% or 99.9%, preferably including 35-60%.

"Comprising … …" in the present invention means that it may comprise other components in addition to the components, which impart different characteristics to the plant growth regulator. In addition, the "including" of the present invention may be replaced by "being" or "being made of … …" which are closed.

The auxiliary agent can be an auxiliary agent which is acceptable in agriculture and pharmacy. As an alternative embodiment of the present invention, the auxiliary agent includes any one or a combination of at least two of a surfactant (e.g., an emulsifier, a wetting agent, a dispersing agent), a thickener, an antifreezing agent, an antifoaming agent, a preservative, or a solvent.

Wherein the surfactant may be an ionic or nonionic emulsifier, wetting agent or dispersant. For example, calcium alkylbenzenesulfonate, fatty alcohol polyoxyethylene ether, castor oil polyoxyethylene ether, alkylphenol polyoxyethylene ether, aralkylphenol polyoxyethylene ether, sodium alkyl sulfate, sodium alkylbenzenesulfonate, alkyl naphthalene sulfonate, sodium/calcium lignin sulfonate, polycarboxylate, sodium dodecyl sulfate, polyoxyethylene ether phosphate, or the like.

Thickeners include, but are not limited to, natural polymers such as xanthan gum, acacia or sodium carboxymethyl cellulose, or synthetic such as polyvinyl alcohol, magnesium aluminum silicate, and the like.

The antifreeze includes, but is not limited to, polyols (e.g., ethylene glycol, propylene glycol, glycerol), urea, calcium chloride, or the like.

Defoamers include, but are not limited to, silicone oils, fatty alcohols, fatty acids, and the like.

Preservatives include, but are not limited to, 1, 2-benzisothiazolin-3-one (BIT), 5-chloro-2-methyl-4-isothiazolin-3-one (CIT), 2-methyl-4-isothiazolin-3-one (MIT), and the like.

Solvents include, but are not limited to, water, aromatic compounds (e.g., mineral spirits), paraffins (e.g., petroleum fractions), alcohols (e.g., carbitol, tetrahydrofurfuryl alcohol), ketones (e.g., isophorone, cyclohexanone), amides (e.g., quinamide), esters (e.g., fatty acid methyl esters), heterocycles (e.g., N-butylpyrrolidone, N-octylpyrrolidone), and the like.

The filler can be of a type acceptable in agro-pharmaceutical industry. Fillers include, but are not limited to, natural minerals (e.g., kaolin, talc, bentonite, diatomaceous earth), plant-based fillers (e.g., corn starch), synthetic fillers (e.g., white carbon), inorganic salts (e.g., ammonium sulfate, magnesium sulfate, sodium sulfate), and the like.

40-65% of trifluralin and 35-60% of auxiliary agent and/or filler.

In preparing the plant growth regulator, the active ingredient of the amisulpride may be dissolved, separated, suspended, mixed, impregnated, adsorbed or attached to a suitable filler, or mixed with an auxiliary agent according to a certain proportion, and then dissolved, separated, suspended, mixed, impregnated, adsorbed or attached to a suitable filler, thereby preparing a suitable dosage form. In an alternative embodiment of the present invention, the formulation of the plant growth regulator preparation includes any one of a suspending agent, a suspoemulsion, an emulsifiable concentrate, a wettable powder, a water aqua, a water dispersible granule, an aqueous emulsion, a microemulsion or a granule.

1-80% of ammonia fluorine colaling,

0.1 To 20 percent of wetting agent,

0.1 To 20 percent of dispersing agent,

The filler is filled up to 100 percent;

The type of the plant growth regulator preparation is water dispersible granules.

The typical but non-limiting amount of trifluralin is 1%, 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75% or 80%, and the typical but non-limiting amount of wetting agent is 0.1%, 1%, 2%, 5%, 8%, 10%, 12%, 15%, 18% or 20%. Dispersants are typically used in an amount of, but not limited to, 0.1%, 1%, 2%, 5%, 8%, 10%, 12%, 15%, 18% or 20%.

The balance of the filler is 100% of the total mass of the filler and the components except for the trifluralin, the wetting agent, the dispersing agent and optionally other raw materials acceptable in the pesticide field.

1 to 50 percent of ammonia fluorine colaling,

0.1 To 10 percent of wetting agent,

0.1 To 10 percent of dispersing agent,

0.1 To 10 percent of antifreezing agent,

0.01-10% Of thickening agent,

0.01 To 1 percent of preservative,

0.01 To 1 percent of defoaming agent,

The water is used for supplementing the balance to 100 percent;

the plant growth regulator preparation is in the form of suspending agent.

The typical but nonlimiting amounts of trifluralin are 1%, 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45% or 50%. Wetting agents are typically used, but not limited to, in amounts of 0.1%, 1%, 2%, 5%, 8% or 10%. The dispersant is typically, but not limited to, used in an amount of 0.1%, 1%, 2%, 5%, 8% or 10%. The antifreeze is typically used in an amount of, but not limited to, 0.1%, 1%, 2%, 5%, 8% or 10%. The thickener is typically used in an amount of, but not limited to, 0.01%, 0.1%, 1%, 2%, 5%, 8% or 10%. Preservatives are typically used in amounts of, but not limited to, 0.01%, 0.1%, 0.5%, 0.8% or 1%. Defoamers are typically used, but not limited to, in amounts of 0.01%, 0.1%, 0.5%, 0.8% or 1%.

The balance of water is water except for the components of the trifluralin, the wetting agent, the dispersing agent, the antifreezing agent, the thickening agent, the preservative, the antifoaming agent and other raw materials acceptable in the pesticide field, and the sum of the water and the components of the trifluralin, the wetting agent, the dispersing agent, the antifreezing agent, the thickening agent, the preservative, the antifoaming agent and other raw materials acceptable in the pesticide field is 100 percent.

Through further limiting the components and the dosage of the plant growth regulator, the plant growth regulator can more effectively inhibit the growth of the top center of cotton, reduce the number of nutrition branches, shorten the length of the nutrition branches and shape good plant types; when the cotton capping agent is applied to cotton capping, capping is more thorough, the capping agent is safer to other existing tissues of cotton, and the nutritional growth can be promoted to convert to reproductive growth, so that the cotton yield is improved to a greater extent; meanwhile, the whole-process mechanization level of cotton can be better improved, and the labor efficiency is improved; when the compound fertilizer is applied to the tip control of fruit trees, the compound fertilizer can better inhibit the growth of redundant fruit branches, is safe to the fruit trees, has long lasting period, can improve the yield, saves labor and time, and is more beneficial to large-scale planting.

As an alternative embodiment of the present invention, the plant growth regulator or the preparation thereof is used in the bud phase of cotton when the plant growth regulator or the preparation thereof is used for shaping and pruning cotton.

Preferably, the plant growth regulator or its preparation is used in an effective amount of 20 to 300gai/ha. The plant growth regulator or formulation thereof is typically, but not limited to, used effectively at a dosage of 20gai/ha、40gai/ha、50gai/ha、80gai/ha、100gai/ha、120gai/ha、150gai/ha、180gai/ha、200gai/ha、220gai/ha、250gai/ha、280gai/ha or 300gai/ha.

As an alternative embodiment of the invention, when the plant growth regulator or the preparation thereof is used for cotton topping, the plant growth regulator is used in the bud stage and the flower bell stage of cotton, and stem and leaf spraying is adopted to uniformly spray the plant growth regulator on the cotton topping cores and the cotton leaves.

Preferably, the plant growth regulator or its preparation is used in an effective amount of 20 to 500gai/ha. The plant growth regulator or formulation thereof is typically, but not limited to, used effectively at a dosage of 20gai/ha、50gai/ha、100gai/ha、150gai/ha、180gai/ha、200gai/ha、250gai/ha、280gai/ha、300gai/ha、350gai/ha、380gai/ha、400gai/ha、450gai/ha、480gai/ha or 500gai/ha.

As an alternative implementation mode of the invention, when the plant growth regulator or the preparation thereof is used for controlling the tips of the fruit trees, the plant growth regulator or the preparation thereof is used in the sprouting and sprouting period of the tender tips of the fruit trees, and is uniformly sprayed on each branch tip by adopting stem and leaf spraying;

Preferably, the plant growth regulator or its preparation is used in an effective amount of 50 to 1000gai/ha. The plant growth regulator or its formulation is typically, but not limited to, effective at a dosage of 50gai/ha, 100gai/ha, 200gai/ha, 300gai/ha, 400gai/ha, 500gai/ha, 600gai/ha, 700gai/ha, 800gai/ha, 900gai/ha or 1000gai/ha.

The present invention will be further described with reference to specific examples and comparative examples.

Example 1

The plant growth regulator (the trifluralin suspending agent) provided by the embodiment comprises the following components in percentage by mass:

the preparation method of the plant growth regulator comprises the following steps:

The effective components of the trifluralin, the wetting agent, the dispersing agent, the antifreezing agent, the thickening agent, the preservative, the defoamer, the water and the like are weighed according to the formula, stirred and dispersed uniformly at high speed, and then crushed to the average particle size of below 3 microns by a sand mill, thus obtaining the plant growth regulator (480 g/L of the trifluralin suspending agent).

Example 2

The plant growth regulator (the trifluralin water dispersible granule) provided by the embodiment comprises the following components in percentage by mass:

component name	Content w/w (%)	Action
			Aminotrifluralin 98% TC	64.3	Active ingredient
Sodium dodecyl sulfate	1.5	Wetting agent
			Borresperse NA sodium Lignosulfonate	4.5	Dispersing agent, available from Borregaard
Corn starch	13	Packing material
			Kaolin clay	Complement 100	Packing material

the preparation method comprises the steps of weighing the effective components of the trifluralin, the wetting agent, the dispersing agent and the filler according to the formula, uniformly mixing, crushing the mixture to an average particle size of below 5 microns through a jet mill system, adding 10% of water into the obtained mixture in a kneader, kneading the mixture for 30 minutes, granulating the obtained kneaded mixture through a granulator, and then drying and screening the granulated mixture to obtain the plant growth regulator (65% of the water dispersible granule of the trifluralin).

Example 3

The plant growth regulator (the trifluralin wettable powder) provided by the embodiment comprises the following components in percentage by mass:

The effective components, wetting agent, dispersing agent and filler are weighed according to the formula, uniformly mixed, and then crushed to an average particle size below 5 microns by an air flow crushing system to obtain the 60% wettable powder of the trifluralin.

Example 4

The preparation method comprises the steps of weighing the effective components of the trifluralin, the wetting agent, the dispersing agent and the filler according to the formula, uniformly mixing, crushing the mixture to an average particle size of below 5 microns through a jet mill system, adding 10% of water into the obtained mixture in a kneader, kneading the mixture for 30 minutes, granulating the obtained kneaded mixture through a granulator, and then drying and screening the granulated mixture to obtain the plant growth regulator (80% of the water dispersible granule of the trifluralin).

Example 5

The effective components of the trifluralin, the wetting agent, the dispersing agent, the antifreezing agent, the thickening agent, the preservative, the defoamer, the water and the like are weighed according to the formula, stirred and dispersed uniformly at high speed, and then crushed to the average grain diameter of below 3 microns by a sand mill, thus obtaining the plant growth regulator (10% of the trifluralin suspending agent).

Comparative example 1

25% Fluorescine suspension concentrate, available from Zhejiang chemical Co., ltd.

Comparative example 2

125G/L flumetralin emulsifiable concentrate, trade name of which is tip-sealed, manufactured by Zhejiang He chemical Co., ltd.

Comparative example 3

25% Paclobutrazol suspension concentrate, ping manufactured by pesticide Co.

In order to verify the technical effects of the above examples and comparative examples, the following test examples were specially set.

Test example 1 field efficacy test of shaping and pruning Cotton

The plant growth regulators (the trifluralin preparation) prepared in example 1 and example 2 and the 25% flumetralin suspension provided in comparative example 1 were subjected to a cotton shaping and pruning efficacy test, and the results are as follows.

Reference to section 134 of pesticide field efficacy test guidelines (two): cotton growth regulator test GB/T17980.134-2004 field efficacy test method.

Test time: 6 months in 2020 to 10 months in 2020.

Test site: stone river sub-stones are connected with the total field tetrad 6.

Test crop: cotton.

Test object: shaping and pruning, and increasing yield.

The cotton variety used in the test is Xinlandia early 45, the soil type is loam, the cotton field in the test adopts a water-saving drip irrigation technology, the ultra-wide film of 2.05 meters is formed by six rows of films and three tubes of films. The film width is 2.05 meters, the row spacing is configured to be 10+66 cm, the precision dibbling is carried out on the film, one film is provided with six rows and three pipes, the drip irrigation is carried out under the film, and the sowing density is 14000 plants/mu. Sowing in the test field for 4 months and 10 days, emergence water for 4 months and 12 days, emergence water for 4 months and 19 days, and uniform management mode among all cells, and uniform conventional management of other weeding, pest killing and fertilization. The test is carried out by 9 treatments, 3 times of repetition, unified application of the medicines for 6 months and 20 days, cotton plant height of about 55cm, 6 fruit tables, fixed plant investigation and manual topping for 7 months and 2 days. Data were investigated and tested for yield for 9 months and 10 days, and analysis of variance was performed using DPS statistical software.

TABLE 1 shaping pruning test-agronomic trait and yield comparison

Remarks: safety refers to the growth inhibition effect on other tissues such as leaves, young buds and the like of cotton. The different letters a, b, c, d indicate that the variance analysis was significant (p=0.05), as follows.

As can be seen from the shaping and pruning test in Table 1, the plant growth regulator (single agent) containing the trifluralin provided by the invention can effectively reduce the number of nutrition branches of cotton, shorten the length of the nutrition branches, be safe to cotton, increase the yield of cotton, achieve the same shaping effect with 375 g/hectare of the contrast agent (comparative example 1) in the dosage range of 40-80 g/hectare of the effective component, and have the same yield, but the dosage is only about 10-21% of the contrast agent, so that the dosage is greatly reduced, the curling and shrinkage phenomenon of young leaves appears at the top of cotton after the contrast agent is applied, and each treatment blade of the plant growth regulator containing the trifluralin is sprayed normally and safer to cotton.

Test example 2 cotton topping field efficacy test

The cotton topping efficacy test was performed on the plant growth regulator (amisulpride preparation) prepared in example 1 and example 2 and the 25% flumetralin suspension provided in comparative example 1, and the results are as follows.

Reference to section 134 of pesticide field efficacy test guidelines (two): cotton growth regulator test GB/T17980.134-2004 field efficacy test method. Evaluation criteria for chemical capping visual inspection: visual inspection of chemical capping the chemical capping effect of the chemical agent with the capping condition of the cotton plant top centers, 0 indicates that all cotton plant top centers continue to grow, no effect is achieved, 100% indicates that all cotton plant top centers lock up and no longer grow, and visual inspection evaluation criteria are shown in table 2.

TABLE 2 evaluation criteria for chemical capping visual inspection of cotton

Test time: 6 months in 2020 to 10 months in 2020.

Test site: stone river sub-stones are connected with the total field tetrad 6.

Test crop: cotton.

Test object: shaping and pruning, and increasing yield.

The cotton variety used in the test is Xinlandia early 45, the soil type is loam, the cotton field in the test adopts a water-saving drip irrigation technology, the ultra-wide film of 2.05 meters is formed by six rows of films and three tubes of films. The film width is 2.05 meters, the row spacing is configured to be 10+66 cm, the precision dibbling is carried out on the film, one film is provided with six rows and three pipes, the drip irrigation is carried out under the film, and the sowing density is 14000 plants/mu. Sowing in the test field for 4 months and 10 days, emergence water for 4 months and 12 days, emergence water for 4 months and 19 days, and uniform management mode among all cells, and uniform conventional management of other weeding, pest killing and fertilization. The test is carried out by 11 treatments, 3 times of repetition, 7 months and 7 days of unified application and manual topping of a district, 7 months and 14 days of unified application of 15 g/mu of mepiquat chloride, 9 months and 12 days of data investigation and yield measurement.

TABLE 3 results of topping experiments-agronomic traits and yield comparisons

Remarks: safety refers to the growth inhibition effect on other tissues such as leaves, young buds and the like of cotton.

As can be seen from the topping test of the cotton in Table 3, the plant growth regulator (single agent) containing the ammonia trifluralin provided by the invention can reduce the plant height, inhibit the top core growth of the cotton, reduce the number of fruit branches, thoroughly topping, be safe to the cotton, promote the transformation of the nutrition growth of the cotton to the reproductive growth, and further improve the cotton yield. The same capping effect is achieved with the comparison medicament (comparative example 1) of flumetralin at the dosage of 200 g/hectare of the effective component, the yield is obviously higher than that of the flumetralin, but the dosage is only about 1/3 of that of the comparison medicament, the dosage is greatly reduced, the phenomenon of curling and shrinking of young leaves occurs at the top of a small part of cotton after the comparison medicament is applied, and the treatment leaves of the plant growth regulator containing the flumetralin are sprayed normally, so that the plant growth regulator is safer to cotton.

Test example 3 Citrus tip-controlling field efficacy test

The citrus tip-controlling field efficacy test was performed on the plant growth regulator (trifluralin formulation) prepared in example 1 and example 2, the 125g/L flumetralin emulsifiable concentrate provided in comparative example 2, and the 25% paclobutrazol suspension concentrate provided in comparative example 3, as follows.

Reference to section 143 of pesticide field efficacy test criteria (two): grape growth regulator test GB/T17980.143-2004, which is conducted with reference to grape guidelines, is conducted because the pesticide effect guidelines for the fruit tree-related regulation of the growth fields are only for grapes.

Test time: 4 months in 2019 to 12 months in 2019.

Test site: qingshan town Li Gucun in Guangxi Guilin Lipu city.

Test crop: citrus fruit.

Test object: tip control and yield increase.

Sugar orange, 4 years old, the garden is a gentle slope land, red loam, the pH value is 6.2, and the organic matter content is common. The vegetation in the orchard is single, the biological phase is simple, the orchard management level is general, and the orchard is routinely managed in the test period. The test was performed on a total of 11 treatments, each treatment being 2 trees, and applied uniformly on 21 days of 4 months. When the pesticide is applied, spring tips are aged, summer tips are not pumped, the pesticide is sprayed uniformly to the crowns of peripheral trees, the crowns of the peripheral trees are sprayed to the front and the back of the leaves, the water consumption for all treatments is 4500L/ha, data investigation is carried out for 5 months and 1 day and 11 days, 5 last spring tips are selected from each tree in different directions, the number of all newly pumped summer tips is observed by fixing the branches, and picking is carried out for 12 months and 5 days.

TABLE 4 Citrus shoot control test-agronomic trait and yield comparison

Remarks: safety refers to the growth inhibition effect on the existing tissues of leaves, flowers, fruits and the like of plants.

The citrus tip control experiment shows that the plant growth regulator (single ammonia trifluralin) containing ammonia trifluralin provided by the invention can control the extraction of new tips, has long lasting period, is safe to young citrus fruits, and can improve the yield of citrus. The tip control effect is the same as that of the control medicament (comparative example 2) of the flumetralin at the dosage of 400 g/hectare of the active ingredient, the yield is basically equivalent, but the dosage is only about 1/2 of that of the control medicament of the flumetralin, so that the dosage is greatly reduced; the duration of the effect is longer and the dosage is lower than that of the control medicament (comparative example 3).

The applicant also adopts the plant growth regulator evaluation method which is the same as the test, the pesticide effect of the plant growth regulator is measured on crops such as litchi, apples, pears and the like, and finally the obtained test data is relatively similar to the test data of citrus.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims

1. The application of a plant growth regulator containing the trifluralin or a preparation thereof in cotton pruning and shaping, cotton topping or fruit tree tip control;

the fruit tree is a citrus or pear tree.

2. The use according to claim 1, wherein the plant growth regulator comprises the following components in parts by mass:

3. The use according to claim 2, wherein the plant growth regulator comprises the following components in parts by mass:

40-65% of trifluralin and 35-60% of auxiliary agent and/or filler.

4. The use according to claim 2, wherein the auxiliary agent comprises any one or a combination of at least two of wetting agents, dispersants, thickeners, solvents, antifreeze agents, defoamers or preservatives.

5. The use according to claim 2, wherein the formulation of the plant growth regulator formulation comprises any one of a suspension, a suspoemulsion, an emulsifiable concentrate, a wettable powder, a water aqua, a water dispersible granule, an aqueous emulsion, a microemulsion or a granule.

6. The use according to claim 5, wherein the plant growth regulator formulation is in the form of a suspension or water dispersible granule.

7. The use according to claim 5, wherein the plant growth regulator comprises the following components in parts by mass:

1-80% of ammonia fluorine colaling,

0.1 To 20 percent of wetting agent,

0.1 To 20 percent of dispersing agent,

The filler is filled up to 100 percent;

The plant growth regulator preparation is water dispersible granules.

8. The use according to claim 5, wherein the plant growth regulator comprises the following components in parts by mass:

1 to 50 percent of ammonia fluorine colaling,

0.1 To 10 percent of wetting agent,

0.1 To 10 percent of dispersing agent,

0.1 To 10 percent of antifreezing agent,

0.01-10% Of thickening agent,

0.01 To 1 percent of preservative,

0.01 To 1 percent of defoaming agent,

The water is used for supplementing the balance to 100 percent;

The plant growth regulator preparation is in the form of suspending agent.

9. The use according to any one of claims 1 to 8, wherein the plant growth regulator or preparation thereof is used in cotton bud phase when used for shaping and pruning cotton.

10. The use according to claim 9, wherein the plant growth regulator or a formulation thereof is used in a dosage of 20 to 300gai/ha.

11. The use according to any one of claims 1 to 8, wherein the plant growth regulator or preparation thereof is applied to cotton topping and is applied during the bud and boll periods of cotton, and is sprayed uniformly on the cotton topping and foliage by means of a stem and leaf spray.

12. The use according to claim 11, wherein the plant growth regulator or a formulation thereof is used in a dosage of 20 to 500gai/ha.

13. The use according to any one of claims 1 to 8, wherein the plant growth regulator or the preparation thereof is used for controlling the tips of fruit trees, and is used in the young tips of fruit trees sprouting and germination period, and is sprayed on each branch tip uniformly by stem and leaf spraying.

14. The use according to claim 13, wherein the plant growth regulator or a formulation thereof is used in a dosage of 50 to 1000gai/ha.