CN109329295A - Benzisoxa abscisic acid and Thidiazuron compounding are used as cotton defoliant and application - Google Patents
Benzisoxa abscisic acid and Thidiazuron compounding are used as cotton defoliant and application Download PDFInfo
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- CN109329295A CN109329295A CN201811533423.4A CN201811533423A CN109329295A CN 109329295 A CN109329295 A CN 109329295A CN 201811533423 A CN201811533423 A CN 201811533423A CN 109329295 A CN109329295 A CN 109329295A
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- defoliant
- benzisoxa
- thidiazuron
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
- A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
- A01N47/28—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N<
- A01N47/36—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N< containing the group >N—CO—N< directly attached to at least one heterocyclic ring; Thio analogues thereof
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
- A01N37/42—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing within the same carbon skeleton a carboxylic group or a thio analogue, or a derivative thereof, and a carbon atom having only two bonds to hetero atoms with at the most one bond to halogen, e.g. keto-carboxylic acids
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Abstract
The invention discloses a kind of benzisoxa abscisic acids and Thidiazuron compounding to be used as cotton defoliant, the defoliant includes benzisoxa abscisic acid and Thidiazuron, and benzisoxa abscisic acid, mass ratio of the Thidiazuron in the defoliant are (0.01~30): (5~70).The dosage form of the defoliant includes but are not limited to wettable powder, water dispersible granules or suspending agent.Instant component compounding rationally, shows certain synergistic effect, not only has excellent defoliation effect, also shows blow-of-cottons effect of preferably accelerating the ripening, and is conducive to promote output of cotton and quality.Meanwhile this defoliant does not contain herbicide and ethephon (CEPHA),2-(chloroethyl) phosphonic acid component, reduces Soil Environmental Pollution and residual caused by a large amount of uses of chemical defoliant and ethephon (CEPHA),2-(chloroethyl) phosphonic acid.
Description
Technical field
The invention belongs to plant growth regulator technical fields, are related to a kind of defoliant, and in particular to a kind of benzisoxa is de-
Acid and Thidiazuron compounding are fallen as machine pick cotton defoliant.The defoliant can be used for promoting cotton to harvest before disleave and/or blow-of-cottons.
Background technique
Xinjiang is the cotton planting center in China.It is shown according to disclosed national cotton yield data, national cotton in 2017
Flower yield is about 548.6 ten thousand tons, and wherein Xinjiang total output is about 408.2 ten thousand tons, accounts for the 74.4% of the whole nation.In recent years, Xinjiang kind
The recruitment cost for planting cotton constantly rises, thus machine pick cotton cropping pattern is just widelyd popularize with its cheap advantage and come.
But occurs a series of problems, such as Cotton Grade and decline of cotton selling price therewith.
Cotton commodity rate is influenced by many factors such as planting conditions, cultivation management measures.Currently, Cotton Industry upgrading
The major way of synergy includes cultivating improved seeds and wideling popularize machine pick cotton cropping pattern.Machine pick cotton has to before harvesting
By spraying defoliant and ripener, to realize falling off and obtaining more unified blow-of-cottons for cotton leaf, and then cotton is realized
Mechanical harvesting.On the one hand the reasonable employment of defoliant can promote the maturation of cotton autumn bell, improve fiber quality；Another party
Face can greatly improve the efficiency of mechanized harvesting, reduce the mechanicalnesses impurity such as broken leaf, improve cotton grade, reduce clearing up and processing
The workload of link.Since defoliant is many kinds of, suitable defoliant variety selection and machine is directly influenced using technology adopt
The yield and quality of cotton.
Summary of the invention
For the needs for solving the technology drawback of existing cotton defoliant, while cotton mechanization being cooperated to pick, the present invention is mentioned
Cotton defoliant is compounded for benzisoxa abscisic acid and Thidiazuron.This defoliant has defoliation effect good, accelerates the ripening effective
Advantage can effectively eliminate the marcescence phenomenon of the cotton leaf occurred after existing cotton defoliant application, reduce leaf and consider content to be worth doing, subtract
Cotton quality caused by few clearing up and processing link declines.
Specifically, cotton defoliant of the present invention, it includes benzisoxa abscisic acid and Thidiazuron, the benzisoxa falls off
Acid, mass ratio of the Thidiazuron in the defoliant are (0.01~30): (5~70).The disleave of defoliant of the present invention is living
Property ingredient be benzisoxa abscisic acid and Thidiazuron, do not contain herbicide and ethephon (CEPHA),2-(chloroethyl) phosphonic acid ingredient, have dosage is few, defoliation effect is good,
The advantages that environmental pollution is small.Compared with the processing of the Thidiazuron single dose of suitable dosage, cotton defoliant of the present invention not only has
There is excellent defoliation effect, also show blow-of-cottons effect of preferably accelerating the ripening, is conducive to promote output of cotton and quality.
The present invention is pointed out that benzisoxa abscisic acid is different from conventional abscisic acid, and the two is in structure and activity
There is larger difference.The chemical structure of benzisoxa abscisic acid and abscisic acid difference is as follows.
During leaf abscission, the variation of plant hormone balance plays an important role, the growth cellulose content in ageing leaves
It reduces, ethylene and abscisic acid (abscisic acid, ABA, 1) content rise.External source can promote in cotton body after spraying defoliant
The generation of abscisic acid is conducive to cotton leaf and falls off, and the content of abscisic acid and the effect of defoliant are positively correlated.But natural abscisic acid
Cost it is very high, and defoliant used today is Thidiazuron and diuron compound product mostly, and diuron is a kind of contact
Plant growth regulator can make cotton leaf cell dehydration, easily cause cotton leaf marcescence, also have to output of cotton and quality larger negative
Face is rung.
Benzisoxa abscisic acid (iso-PhABA, 2) be using carbonyl activity difference regioselectivity addition synthesize it is novel
Antimetabolic abscisic acid analogs.Bioactivity research shows that benzisoxa abscisic acid is de- to the inhibitory activity of Germination of Lettuce Seeds
10 times of acid are fallen, inhibit phosphatase HAB1 vigor more stronger than abscisic acid in conjunction with after ABA Receptor PYLs.Benzisoxa abscisic acid
In conjunction with showing benzisoxa abscisic acid by hydrogen bond and Van der Waals force with the parsing of the complex crystal structure of ABA Receptor PYL10
In the binding pocket of PYL10, the ability of most PYLs combination benzisoxa abscisic acids is better than abscisic acid.Benzisoxa falls off
Acid is a selective abscisic acid agonist well to PYLs, has bioactivity more better than abscisic acid.And benzisoxa
Abscisic acid eliminates the selective protection and deprotection of carbonyl in synthesis, so that synthetic route is easy, it is easy to industrialized production,
It has a extensive future.As a kind of abscisic acid analogs of novel antimetabolic, benzisoxa abscisic acid is all shown in all various aspects
Activity more better than abscisic acid, but application of the benzisoxa abscisic acid in terms of cotton defoliation has not been reported.
As the preferred of technical solution of the present invention, mass percentage of the benzisoxa abscisic acid in the defoliant
It is 0.01~10%, mass percentage of the Thidiazuron in the defoliant is 5~70%.
As the preferred of technical solution of the present invention, mass percentage of the benzisoxa abscisic acid in the defoliant
It is 0.05~20%, mass percentage of the Thidiazuron in the defoliant is 5~60%.
As the preferred of technical solution of the present invention, mass percentage of the benzisoxa abscisic acid in the defoliant
It is 1~30%, mass percentage of the Thidiazuron in the defoliant is 5~50%.
In view of the actual conditions of crop field cotton planting, the mode that defoliant of the present invention is evenly distributed on cotton leaf is preferred
For foliage-spray.Therefore, the dosage form that the defoliant can agriculturally be applied includes but are not limited to wettable powder, water-dispersible grain
Agent or suspending agent.According to method known in those skilled in the art, the preparation formulation selection that the defoliant can be prepared can
Wet powder, water dispersible granules or suspending agent.Those skilled in the art are according to existing knowledge it is known that preparing above-mentioned preparation agent
Type also needs to screen a variety of suitable auxiliary agents (wetting agent, dispersing agent, thickener, antifreezing agent, defoaming agent, preservative etc.) and filler
(carrier).
By taking wettable powder formulation as an example, workable auxiliary agent has: dispersing agent, such as polycarboxylic acid salt
(TERSPERSE2700, T36, GY-D06 etc.), lignin sulfonate (Ufoxane 3A, Borresperse NA,
Borresperse CA-SA etc.), naphthalene and alkyl naphthalene formaldehyde condensate sulfonate class (NNO, MF, Morwet D-425, Tamol
NN, TERSPERSE2020 etc.), Nekal BX (nekal), EO-PO block polyether class, alkylphenol-polyethenoxy base
Ether phosphate, alkylphenol polyoxyethylene ether formaldehyde condensate sulfate (SOPA), in it is one or more；Wetting agent, such as sulfuric acid
It is salt (K-12), Sulfonates (ABS-Na, BX, Terwet 1004 etc.), a kind of or more in compound wetting agent (Morwet EFW)
Kind；Filler, such as diatomite, kaolin, light calcium, talcum powder, white carbon black, attapulgite, clay, ammonium sulfate, urea, sucrose, Portugal
Grape sugar, cornstarch, sodium sulphate, sodium polyphosphate etc. are one or more.
For water dispersible granules, those skilled in the art, which are very familiar with, completes the present invention using corresponding auxiliary agent.Dispersion
In agent, such as polycarboxylate (TERSPERSE 2700, T36, GY-D06), lignosulfonates, alkylnaphthalene sulfonate it is a kind of or
It is a variety of；Wetting agent, as one or more in alkyl sulfate, alkylsulfonate, naphthalene sulfonate；Disintegrating agent, such as ammonium sulfate, sulfuric acid
It is one or more in sodium, polyvinylpyrrolidone, starch and its derivative, bentonite；Binder, such as starch, glucose, poly- second
One of enol, polyethylene glycol, sodium carboxymethylcellulose, sucrose are a variety of；Filler, as diatomite, kaolin, white carbon black,
Light calcium, talcum powder, attapulgite, clay are one or more.
By taking suspending agent dosage form as an example, workable auxiliary agent has: dispersing agent, such as polycarboxylate, lignosulfonates, alkylnaphthalene
It is a kind of or more in sulfonate (dispersing agent NNO), TERSPERSE 2020 (Huntsman Corporation of U.S. product, alkyl naphthalene sulfonic acid salt)
Kind；Emulsifier, as Nongru-700 # (common name: alkyl phenol formaldehyde resin polyoxyethylene ether), agriculture breast 2201, this disk -60# are (general
Name: Span60), Tween-60 # (common name: polyoxyethylene sorbitan stearate), agriculture breast 1601#
(common name: triphenoethyl benzene phenol polyoxyethylene polyoxypropylene block polymer), (Huntsman Corporation of the U.S. of TERSPERSE 4894
Product) one of or it is a variety of；Wetting agent, such as alkylphenol polyoxyethylene ether formaldehyde condensate sulfate, alkyl phenol polyoxy second
Alkenyl ether phosphate, phenethyl phenol polyoxyethylene groups ether phosphate, alkyl sulfate, alkylsulfonate, naphthalene sulfonate,
It is one or more in TERSPERSE 2500 (Huntsman Corporation of U.S. product)；Thickener, such as xanthan gum, polyvinyl alcohol, swelling
It is one or more in soil, aluminium-magnesium silicate；Preservative, as one or more in formaldehyde, benzoic acid, sodium benzoate；Stabilizer, such as ring
It is oxygen soybean oil, epoxychloropropane, one or more in triphenyl phosphate；Defoaming agent, such as organic silicon defoaming agent；Antifreezing agent, such as
It is one or more in ethylene glycol, propylene glycol, glycerol, urea, inorganic salts such as sodium chloride；Water is deionized water.
As the preferred of technical solution of the present invention, defoliant of the present invention can be by benzisoxa abscisic acid, Thidiazuron, 12
Sodium alkyl benzene sulfonate, sodium lignin sulfonate and kaolin group at.Specifically, the benzisoxa abscisic acid is in the defoliant
Mass percentage be 0.01~10%, it is further preferred that the mass percentage of the benzisoxa abscisic acid be 0.01~
1%, 0.1~5%, 5~10%, 0.01%, 0.1%, 5% or 10%.Quality hundred of the Thidiazuron in the defoliant
Dividing content is 5~70%.It is further preferred that the mass percentage of the Thidiazuron be 5~25%, 25~40%, 40~
70%, 5%, 25%, 40% or 70%.The mass percentage of the neopelex is 1~10%, further excellent
Selection of land, the mass percentage of the neopelex be 1~2%, 2~5%, 5~10%, 1%, 2%, 5% or
10%.The mass percentage of the sodium lignin sulfonate is 1~10%, it is further preferred that the sodium lignin sulfonate
Mass percentage is 1~2%, 2~5%, 5~10%, 1%, 2%, 5% or 10%.Kaolin as a kind of solid carrier,
Dosage polishing 100%.In the preferred embodiment, the dosage form of the machine pick cotton defoliant is wettable powder, preparation side
Method is to mix benzisoxa abscisic acid, Thidiazuron, neopelex, sodium lignin sulfonate and kaolin, by air-flow
Pulverizer crushes, and obtains the machine pick cotton defoliant of wettable powder formulation.
As the preferred of technical solution of the present invention, defoliant of the present invention is by benzisoxa abscisic acid, Thidiazuron, dodecane
Base benzene sulfonic acid sodium salt, sodium lignin sulfonate, sodium sulphate, sodium carboxymethylcellulose and kaolin group at.Specifically, the benzisoxa is de-
Falling mass percentage of the acid in the defoliant is 0.05~20%, it is further preferred that the benzisoxa abscisic acid
Mass percentage is 0.05~0.6%, 0.6~5%, 5~20%, 0.05%, 0.6%, 5% or 20%.The Thidiazuron
Mass percentage in the defoliant is 5~60%, it is further preferred that the mass percentage of the Thidiazuron is
5~20%, 20~35%, 35~60%, 5%, 20%, 35% or 60%.The quality percentage of the neopelex
Content be 1~5%, it is further preferred that the mass percentage of neopelex be 1~3%, 3~5%, 1%,
3% or 5%.The mass percentage of the sodium lignin sulfonate is 1~10%, it is further preferred that sodium lignin sulfonate
Mass percentage is 1~2%, 2~5%, 5~10%, 1%, 2%, 5% or 10%.The quality percentage of the sodium sulphate contains
Amount be 1~15%, it is further preferred that the mass percentage of sodium sulphate be 1~5%, 5~10%, 10~15%, 1%,
5%, 10% or 15%.The mass percentage of the sodium carboxymethylcellulose is 0.1%.Kaolin is carried as a kind of solid
Body, dosage polishing 100%.In the preferred embodiment, the dosage form of the machine pick cotton defoliant is water dispersible granules, preparation
Method is by benzisoxa abscisic acid, Thidiazuron, neopelex, sodium lignin sulfonate, sodium sulphate, carboxymethyl cellulose
Sodium and kaolin mixing, are granulated after airslide disintegrating mill crushes, dry, screening, obtaining the machine pick cotton of dosage form of water dispersible granule
Defoliant.
As the preferred of technical solution of the present invention, defoliant composition of the present invention is by benzisoxa abscisic acid, Thidiazuron, drawing
Open powder BX, sodium lignin sulfonate, ethylene glycol, Kathon CG, organic silicon defoamer, xanthan gum and kaolin group at.Specifically, the benzene
And mass percentage of the different abscisic acid in the defoliant is 1~30%, it is further preferred that the benzisoxa abscisic acid
Mass percentage be 1~5%, 5~15%, 15~30%, 1%, 5%, 15% or 30%.The Thidiazuron is described de-
Mass percentage in leaf agent is 5~50%.It is further preferred that the mass percentage of the Thidiazuron be 5~15%,
15~30%, 30~50%, 5%, 15%, 30% or 50%.The mass percentage of the Nekal BX is 1~10%, into
Preferably, the mass percentage of Nekal BX is 1~3%, 3~5%, 5~10%, 1%, 3%, 5% or 10% to one step.Institute
The mass percentage for stating sodium lignin sulfonate is 1~10%, it is further preferred that the mass percentage of sodium lignin sulfonate
It is 1~3%, 3~5%, 5~10%, 1%, 3%, 5% or 10%.The mass percentage of the ethylene glycol be 2.8~
8.8%, it is further preferred that the mass percentage of ethylene glycol is 2.8% or 8.8%.The mass percentage of the Kathon CG
It is 0.5%.The mass percentage of the organic silicon defoamer is 0.5%.The mass percentage of the xanthan gum is
0.2%.Kaolin dosage polishing 100%.In the preferred embodiment, the dosage form of the machine pick cotton defoliant is suspending agent,
Preparation method is benzisoxa abscisic acid, Thidiazuron, Nekal BX, sodium lignin sulfonate, ethylene glycol, Kathon CG, organosilicon defoaming
Agent and kaolin mixing, are granulated after airslide disintegrating mill crushes, mix after grinding with xanthan gum, shear, obtain aqueous suspension agent
The machine pick cotton defoliant of dosage form.
On the other hand, the present invention also provides the defoliants in application agriculturally.More specifically, the defoliant is used
In the disleave and/or blow-of-cottons that promote cotton.
Compared with prior art, defoliant of the present invention at least has the following beneficial effects or advantage.
(1) defoliant is using the compound of benzisoxa abscisic acid and Thidiazuron as defoliating activity ingredient, both plants
Growth regulator shows synergistic function, and defoliation effect is substantially better than the defoliation effect of single dose, and benzisoxa abscisic acid
There is blow-of-cottons effect of preferably accelerating the ripening with Thidiazuron compounding.
(2) herbicide and ethephon (CEPHA),2-(chloroethyl) phosphonic acid component are not contained in the defoliant, handle phase with the Thidiazuron single dose of suitable dosage
Than defoliant of the present invention not only has excellent defoliation effect, also shows blow-of-cottons effect of preferably accelerating the ripening, is conducive to mention
Rise output of cotton and quality.
(3) defoliant has many advantages, such as that dosage is few, effect is good, reduces the usage amount of chemical defoliant and ethephon (CEPHA),2-(chloroethyl) phosphonic acid,
Mitigate Soil Environmental Pollution and residual caused by a large amount of uses of chemical pesticide.Machine pick cotton fiber quality is improved, it is raw to save agricultural
Produce cost.Meanwhile the defoliant also shows small characteristic influenced by ambient temperature, and low temperature environment can be overcome to imitate disleave
The unfavorable negative effect of fruit.
Specific embodiment
In order to which the objectives, technical solutions, and advantages of the present invention (beneficial effect) are more clearly understood, below in conjunction with implementation
Example, is further elaborated on the present invention, but does not limit the present invention.Test method in subordinate's embodiment, such as without spy
Different explanation, is conventional method.Test material used in subordinate's embodiment is unless otherwise specified conventional biochemical reagent.
Quantitative test in following embodiment is respectively provided with and repeats to test three times, and results are averaged.
Embodiment 1
The preparation of the defoliant (A) of wettable powder formulation, preparation method are by benzisoxa abscisic acid, Thidiazuron and to help
Agent is sufficiently mixed, and is crushed by airslide disintegrating mill, and the machine pick cotton for obtaining the wettable powder formulation of different active constituent contents is de-
Leaf agent.Benzisoxa abscisic acid raw medicine purity is 98%.Thidiazuron used is purchased from limited liability company of Jiangsu hormone study institute, raw medicine
Purity is 98%.In the present embodiment, the selection of auxiliary neopelex (chemistry is pure), sodium lignin sulfonate (are changed
Learn pure) and kaolin (4000 mesh).It should be noted that the percentage in pharmaceutical formulation described in the present embodiment is weight (matter
Amount) percentage.
Defoliant A-1: the mass fraction of benzisoxa abscisic acid is 0.01%, and the mass fraction of Thidiazuron is 5%, dodecane
The mass fraction of base benzene sulfonic acid sodium salt is 10%, and the mass fraction of sodium lignin sulfonate is 10%, and surplus is kaolin.
Defoliant A-2: the mass fraction of benzisoxa abscisic acid is 0.1%, and the mass fraction of Thidiazuron is 25%, dodecane
The mass fraction of base benzene sulfonic acid sodium salt is 1%, and the mass fraction of sodium lignin sulfonate is 2%, and surplus is kaolin.
Defoliant A-3: the mass fraction of benzisoxa abscisic acid is 5%, and the mass fraction of Thidiazuron is 40%, dodecyl
The mass fraction of benzene sulfonic acid sodium salt is 3%, and the mass fraction of sodium lignin sulfonate is 5%, and surplus is kaolin.
Defoliant A-4: the mass fraction of benzisoxa abscisic acid is 10%, and the mass fraction of Thidiazuron is 70%, dodecane
The mass fraction of base benzene sulfonic acid sodium salt is 5%, and the mass fraction of sodium lignin sulfonate is 5%, and surplus is kaolin.
Embodiment 2
The preparation of the defoliant (B) of dosage form of water dispersible granule, preparation method be by benzisoxa abscisic acid, Thidiazuron and
Auxiliary agent is sufficiently mixed, and is crushed by airslide disintegrating mill, is granulated, dries, is sieved, and the machine pick cotton disleave of dosage form of water dispersible granule is obtained
Agent.Benzisoxa abscisic acid raw medicine purity is 98%.Thidiazuron used is purchased from limited liability company of Jiangsu hormone study institute, and raw medicine is pure
Degree is 98%.In the present embodiment, the selection of auxiliary neopelex (chemistry is pure), sodium lignin sulfonate (chemistry
It is pure), sodium sulphate (chemistry pure), sodium carboxymethylcellulose (chemistry is pure) and kaolin (4000 mesh).It should be noted that this implementation
Percentage in the example pharmaceutical formulation is weight (quality) percentage.
Defoliant B-1: the mass fraction of benzisoxa abscisic acid is 0.05%, and the mass fraction of Thidiazuron is 5%, dodecane
The mass fraction of base benzene sulfonic acid sodium salt is 3%, and the mass fraction of sodium lignin sulfonate is 1%, and the mass fraction of sodium sulphate is 10%,
The mass fraction of sodium carboxymethylcellulose is 0.5%, and surplus is kaolin.
Defoliant B-2: the mass fraction of benzisoxa abscisic acid is 0.6%, and the mass fraction of Thidiazuron is 20%, dodecane
The mass fraction of base benzene sulfonic acid sodium salt is 5%, and the mass fraction of sodium lignin sulfonate is 10%, and the mass fraction of sodium sulphate is
15%, the mass fraction of sodium carboxymethylcellulose is 0.1%, and surplus is kaolin.
Defoliant B-3: the mass fraction of benzisoxa abscisic acid is 5%, and the mass fraction of Thidiazuron is 60%, dodecyl
The mass fraction of benzene sulfonic acid sodium salt is 4%, and the mass fraction of sodium lignin sulfonate is 2%, and the mass fraction of sodium sulphate is 10%, carboxylic
The mass fraction of sodium carboxymethylcellulose pyce is 1%, and surplus is kaolin.
Defoliant B-4: the mass fraction of benzisoxa abscisic acid is 20%, and the mass fraction of Thidiazuron is 35%, dodecane
The mass fraction of base benzene sulfonic acid sodium salt is 3%, and the mass fraction of sodium lignin sulfonate is 2%, and the mass fraction of sodium sulphate is 5%,
The mass fraction of sodium carboxymethylcellulose is 0.6%, and surplus is kaolin.
Embodiment 3
The preparation of the defoliant (C) of aqueous suspension agent dosage form, preparation method are by benzisoxa abscisic acid, Thidiazuron and to help
Agent is sufficiently mixed, and is ground after airslide disintegrating mill crushes, is mixed later with xanthan gum, and shearing obtains aqueous suspension agent dosage form
Machine pick cotton defoliant.Benzisoxa abscisic acid raw medicine purity is 98%.Thidiazuron used is limited purchased from Jiangsu hormone study institute share
Company, raw medicine purity are 98%.In the present embodiment, the selection of auxiliary Nekal BX (chemistry is pure), sodium lignin sulfonate (are changed
Learn pure), ethylene glycol (chemistry pure), Kathon CG (chemistry is pure), organic silicon defoamer (chemistry is pure) and kaolin (4000 mesh).It needs
Bright, the percentage in pharmaceutical formulation described in the present embodiment is weight (quality) percentage.
Defoliant C-1: the mass fraction of benzisoxa abscisic acid is 1%, and the mass fraction of Thidiazuron is 5%, Nekal BX
Mass fraction be 5%, the mass fraction of sodium lignin sulfonate is 10%, and the mass fraction of ethylene glycol is 6%, the quality of Kathon CG
Score is 0.5%, and the mass fraction of organic silicon defoamer is 0.5%, and the mass fraction of xanthan gum is 0.2%, and surplus is kaolinite
Soil.
Defoliant C-2: the mass fraction of benzisoxa abscisic acid is 5%, and the mass fraction of Thidiazuron is 15%, Nekal BX
Mass fraction be 2%, the mass fraction of sodium lignin sulfonate is 7%, and the mass fraction of ethylene glycol is 4%, the quality of Kathon CG
Score is 0.5%, and the mass fraction of organic silicon defoamer is 0.5%, and the mass fraction of xanthan gum is 1%, and surplus is kaolin.
Defoliant C-3: the mass fraction of benzisoxa abscisic acid is 15%, and the mass fraction of Thidiazuron is 50%, pull open powder
The mass fraction of BX is 5%, and the mass fraction of sodium lignin sulfonate is 3%, and the mass fraction of ethylene glycol is 10%, the matter of Kathon CG
Measuring score is 01%, and the mass fraction of organic silicon defoamer is 0.5%, and the mass fraction of xanthan gum is 0.5%, and surplus is kaolinite
Soil.
Defoliant C-4: the mass fraction of benzisoxa abscisic acid is 30%, and the mass fraction of Thidiazuron is 35%, pull open powder
The mass fraction of BX is 10%, and the mass fraction of sodium lignin sulfonate is 2%, and the mass fraction of ethylene glycol is 3%, the matter of Kathon CG
Measuring score is 0.8%, and the mass fraction of organic silicon defoamer is 0.5%, and the mass fraction of xanthan gum is 2.5%, and surplus is height
Ridge soil.
Embodiment 4
The present embodiment provides the disleave of defoliant, blow-of-cottons effect test, experimental design and the results are shown in Table 1 and table 2.Test in
It is carried out in three branch of the 8th dendrite resultant field of the Production and Construction Corps of Xinjiang within 2018, experimental field many years plant cotton, in soil fertility
Deng.Sowing on April 22nd, 2018, cotton variety are that new land is No. 64 early, machine pick cotton cropping pattern, six row of a film, line-spacing 66cm+
10cm, 1.3 ten thousand plants/667m of density2, under-film drip irrigation, a film 2 pipe.Experimental field cotton growth is neat, and physiology phase is consistent.The test
Cotton field uses submembrane drip irrigation technology, and the field management measures such as apply fertilizer, pour water are consistent with crop field, and fertilization mode is used and filled with water droplet
Fertilising.
Cell setting: it is designed using randomized block experiment, every group of 4 cells, 6 meters of each zone leader is 2.3 meters wide, each
Cell randomly selects 100 plants of cottons.
If clear water control takes off and spits grand (Bayer A.G) 15g/667m2, 100% Thidiazuron 15g/667m2, defoliant A-
1, defoliant A-2, defoliant A-3, defoliant A-4, defoliant B-1, defoliant B-2, defoliant B-3, defoliant B-4, disleave
Agent C-1, defoliant C-2, defoliant C-3, defoliant C-4 amount to 15 cells.
Disleave blow-of-cottons effect calculation formula:
Disleave rate (%)=[(application frontal lobe the piece number-application rear blade number)/application frontal lobe the piece number] × 100%
Blow-of-cottons rate (%)=(blow-of-cottons cotton boll number/total bell number) × 100%
The blow-of-cottons test result of 1 benzisoxa abscisic acid of table and Thidiazuron compounding cotton defoliant
The disleave test result of 2 benzisoxa abscisic acid of table and Thidiazuron compounding cotton defoliant
Tables 1 and 2 statistics indicate that, the disleave of above-mentioned defoliant, blow-of-cottons effect is de- better than comparison medicament spits grand (Bayer Bitterfeld GmbH
Company) 15g/667m2, 100% Thidiazuron 15g/667m2Disleave and blow-of-cottons effect, disleave before can be used for cotton harvesting and/or
It accelerates the ripening.
In conclusion benzisoxa abscisic acid provided by the invention and Thidiazuron compound preparation, have good disleave and spit
Wadding effect, two kinds of ingredients have synergistic effect.The present invention provides defoliant, does not add herbicide and ethephon (CEPHA),2-(chloroethyl) phosphonic acid component, has and uses
Amount is less, effect is good, environmental pollution is small, the characteristics such as small influenced by ambient temperature, defoliation effect better than the Thidiazuron of suitable dosage at
Reason, and have blow-of-cottons effect of preferably accelerating the ripening.In addition, defoliant provided by the invention can overcome low temperature environment to defoliation effect
It influences, reduces the usage amount of chemical defoliant and ethephon (CEPHA),2-(chloroethyl) phosphonic acid, mitigate Soil Environmental Pollution caused by a large amount of uses of chemical pesticide
And residual, machine pick cotton fiber quality is improved, agriculture production cost is saved.
Further narration is done to the present invention above in conjunction with embodiment, but present invention is not limited to the embodiments described above,
Within the knowledge of one of ordinary skill in the art, it can also make without departing from the purpose of the present invention
Various change.
Claims (7)
1. a kind of benzisoxa abscisic acid and Thidiazuron compounding are used as cotton defoliant, which is characterized in that the defoliant includes benzene
And different abscisic acid and Thidiazuron, benzisoxa abscisic acid, mass ratio of the Thidiazuron in the defoliant are (0.01~30): (5~
70)。
2. benzisoxa abscisic acid according to claim 1 and Thidiazuron compounding are used as cotton defoliant, which is characterized in that institute
Stating mass percentage of the benzisoxa abscisic acid in the defoliant is 0.01~10%, and the Thidiazuron is in the defoliant
In mass percentage be 5~70%.
3. benzisoxa abscisic acid according to claim 1 and Thidiazuron compounding are used as cotton defoliant, which is characterized in that institute
Stating mass percentage of the benzisoxa abscisic acid in the defoliant is 0.05~20%, and the Thidiazuron is in the defoliant
In mass percentage be 5~60%.
4. benzisoxa abscisic acid according to claim 1 and Thidiazuron compounding are used as cotton defoliant, which is characterized in that institute
Stating mass percentage of the benzisoxa abscisic acid in the defoliant is 1~30%, and the Thidiazuron is in the defoliant
Mass percentage be 5~50%.
5. benzisoxa abscisic acid according to any one of claim 1 to 4 and Thidiazuron compounding are used as cotton defoliant,
It is prepared into the wettable powder, water dispersible granules or suspending agent that can agriculturally apply.
6. benzisoxa abscisic acid described in claim 1 and Thidiazuron compounding are as cotton defoliant in application agriculturally.
7. defoliant is used to promote the disleave blow-of-cottons of cotton according to claim 6.
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