CN102342292A - Aqueous suspension of plant-growth regulator, its preparation method and its application - Google Patents
Aqueous suspension of plant-growth regulator, its preparation method and its application Download PDFInfo
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Abstract
The invention discloses an aqueous suspension of a plant-growth regulator, a preparation method and an application. The aqueous suspension has the effective components of thidiazuron and ethephon. The aqueous suspension also comprises a wetting agent, a dispersant, a thickening agent, an antifreezing agent, an antifoaming agent, an antiseptic and water. The aqueous suspension is capable of effectively promoting the ripening and defoliation of cotton, and is convenient for mechanically harvesting the cotton. The aqueous suspension has the advantages of no dust drift, no moisture absorption, difficult combustion and explosion, high biological activity, safety, environmental protection and the like.
Description
Technical field
The present invention relates to the aqueous suspension agent and preparation method thereof and application of a plant growth regulators.
Background technology
Usually carry out cotton boll at late growth stage on the Cotton Production and accelerate the ripening and the disleave processing,, improve frost preceding flower output and cotton grade so that carry out mechanical harvesting.
Thidiazuron and ethrel are respectively to produce to go up widely used defoliant and ripener, and patent ZL200810054702.2 (Wang Guiqi etc., 2008) has proposed a kind of built wettable powder that contains Thidiazuron and ethrel.But, be difficult to realize suitability for industrialized production and agricultural production application because relatively difficulty of wetting powder is processed in very easily moisture absorption of ethrel.
Summary of the invention
The aqueous suspension agent and preparation method thereof and application that the purpose of this invention is to provide a plant growth regulators.
Aqueous suspension agent provided by the invention, its active ingredient are Thidiazuron and ethrel.
Above-mentioned aqueous suspension agent also comprises wetting agent, dispersant, thickener, antifreezing agent, defoamer, preservative and water.
Above-mentioned aqueous suspension agent also can only be made up of said components.Wherein, said wetting agent is selected from least a among Nekal BX, neopelex and the T-1004; Wherein, said Nekal BX can be bought from various open commercial sources and obtain, as can be available from Earthquake of Anyang station in Henan dicyclo auxiliary agent Co., Ltd; Said T-1004 can buy from various open commercial sources and obtain, as can be available from the graceful chemical industry of Nanjing Hensel Co., Ltd, commercial disignation " T-1004 ";
Said dispersant is selected from least a in sodium lignin sulfonate, polycarboxylate and the sodium metnylene bis-naphthalene sulfonate (NNO); The number-average molecular weight of said sodium lignin sulfonate is 5000～10000; The weight average molecular weight of said polycarboxylate is 15000～30000; Wherein, said sodium lignin sulfonate can be bought from various open commercial sources and obtain, as can be available from Earthquake of Anyang station in Henan dicyclo auxiliary agent Co., Ltd; Said polycarboxylate is the copolymer of acrylic acid and maleic anhydride, can buy from various open commercial sources obtain, and as can be available from the Beijing Guangyuan Yinong Chemical Co.,Ltd, trade name GY-D06; Said thickener is selected from least a in xanthans, carboxymethyl cellulose and the bentonite; Wherein, said xanthans is the monospore polysaccharide that the fermentation of false Xanthomonas produces, and weight average molecular weight is 200,000～2,000,000, can buy from various open commercial sources obtain, as can be available from Hebei the earth bio tech ltd; The weight average molecular weight of said carboxymethyl cellulose is 250000～700000, can buy from various open commercial sources obtain, as can be available from Shandong Wei Fang Z-TEK composite Co., Ltd; Said bentonite can be bought from various open commercial sources and obtain, as can be available from Xinyang, the Henan meticulous bentonite of prosperous richness Co., Ltd;
Said antifreezing agent is selected from least a in ethylene glycol, propane diols and the urea;
Said defoamer is selected from least a among TSA 775 and the SAG 630; Said TSA 775 is silicone defoaming agent with SAG 630; Wherein, TSA 775 is a kind of silicone defoaming agent that Japan day nitre Co., Ltd. produces, and can buy from various open commercial sources obtain, and as can be available from Wei Laihui south Co., Ltd of group (China), commercial disignation be " TSA775 "; SAG 630 is a kind of nonionic silicone defoaming agent that Co., Ltd produces in the U.S. Ao Sijia organosilicon, also can buy from various open commercial sources obtain, and as can be available from the inferior trade Co., Ltd of Hangzhou Weir, commercial disignation be " SAG 630 ";
Said preservative is selected from least a among Sodium Benzoate and the Ka Song; Wherein, said card pine be a kind of preservative of German foreign cherry group production, and abroad trade name is " KATHON CG ", and its active component is the isothiazolinone compounds;
Said active ingredient is in the said aqueous suspension agent of said Thidiazuron and said ethrel; The mass percent that the gross weight of said Thidiazuron and ethrel accounts for said aqueous suspension agent is 10%～80%; Preferred 20%～60%; Specifically can be 10%～60%, 10%～44%, 10%～20%, 20%～80%, 20%～60%, 20%～44%, 44%～80%, 44%～60% or 60%～80%, more preferably 60%;
The mass ratio of said Thidiazuron and ethrel is 1: 1～10; Preferred 1: 2.5～5; Specifically can be 1: 1～2.5,1: 3～4,1: 2.5～10,1: 3～10,1: 4～10,1: 2.5～3,1: 2.5～4,1: 1～3 or 1: 1～4, more preferably 1: 4;
It is 0.5%～5% that said wetting agent accounts for said aqueous suspension agent mass percent, preferred 1%～2%, specifically can be 0.5%～1%, 0.5%～2%, 1%～5% or 2%～5%, more preferably 2%;
It is 1%～10% that said dispersant accounts for said aqueous suspension agent mass percent, preferred 3%～5%, specifically can be 1%～5%, 1%～3%, 5%～10% or 3%～10%, more preferably 5%;
It is 0.1%～2% that said thickener accounts for said aqueous suspension agent mass percent; Preferred 0.2%～0.5%; Specifically can be 0.1%～1%, 0.1%～0.2%, 0.1%～0.5%, 0.2%～1%, 0.2%～2%, 0.5%～1%, 0.5%～2% or 1%～2%, more preferably 0.5%;
It is 2%～10% that said antifreezing agent accounts for said aqueous suspension agent mass percent; Preferred 3%～5%; Specifically can be 2%～5%, 2%～4%, 2%～3%, 3%～10%, 3%～4%, 4%～10%, 4%～5% or 5%～10%, more preferably 4%;
It is 0.1%～1% that said defoamer accounts for said aqueous suspension agent mass percent; Preferred 0.2%～0.5%; Specifically can be 0.1%～0.2%, 0.1%～0.3%, 0.1%～0.5%, 0.2%～1%, 0.3%～1%, 0.5%～1%, 0.3%～0.5% or 0.2%～0.3%, more preferably 0.5%;
It is 0.1%～1% that said preservative accounts for said aqueous suspension agent mass percent, preferred 0.2%～0.5%, specifically can be 0.1%～0.5%, 0.1%～0.2%, 0.2%～1% or 0.5%～1%, more preferably 0.5%;
Surplus is said water.
Above-mentioned aqueous suspension agent can promote that cotton leaf comes off, and cotton boll cracking blow-of-cottons improve colored output 1 time, are convenient to mechanized harvest.Wherein, said cotton variety can be agricultural university cotton No. 8.
The method of the above-mentioned aqueous suspension agent of preparation provided by the invention comprises the steps: each the component mixing in aforementioned arbitrary said aqueous suspension agent is obtained said aqueous suspension agent.
In the said mixing step of this method, the mixing step comprises shearing, grinds and shear step.Wherein, In the said shearing step; Rotating speed is 2000～5000rpm; Preferred 3000rpm; Specifically can be 2000～4000rpm, 3000～4000rpm, 2000～3000rpm, 3000～5000rpm or 4000～5000rpm; Time is 10～60 minutes, preferred 30 minutes, specifically can be 10～20 minutes, 10～30 minutes, 20～30 minutes, 20～60 minutes or 30～60 minutes; In the said grinding steps, the time is 1～4 hour, preferred 2 hours, specifically can be 1～2 hour, 2～3 hours, 1～3 hour, 2～4 hours or 3～4 hours; Saidly shear in the step again; Rotating speed is 2000～5000rpm; Preferred 3000rpm; Specifically can be 2000～4000rpm, 3000～4000rpm, 2000～3000rpm, 3000～5000rpm or 4000～5000rpm; Time is 10～30 minutes; Preferred 15 minutes, specifically can be 10～15 minutes, 10～20 minutes, 15～20 minutes, 15～30 minutes or 20～30 minutes.
Above-mentioned mixing step specifically can be: earlier with said Thidiazuron, ethrel, dispersant, wetting agent, antifreezing agent, preservative and water in agitated reactor with clipper with the rotating speed cutting of 2000～5000rpm 10～60 minutes; With grinder sand milling 1～4 hour; Add defoamer during the grinding; The grinding back that finishes adds thickener and uses clipper with 2000～5000rpm rotating speed cutting 10～30 minutes, preferred 15 minutes again.
The application of the aqueous suspension agent that the invention described above provides in promoting cotton leaf to come off to accelerate the ripening with the cotton boll cracking also belongs to protection scope of the present invention, and said cotton variety can be agricultural university cotton No. 8.
Aqueous suspension agent provided by the invention can effectively promote accelerating the ripening and disleave of cotton, and the mechanization of being convenient to cotton is gathered.Aqueous suspension agent of the present invention has no dust drift, and nonhygroscopic, nonflammable explosive, biologically active is high, advantages such as safety and environmental protection.
Description of drawings
Fig. 1 is the liquid chromatogram of standard items Thidiazuron.
Fig. 2 is the liquid chromatogram of Thidiazuron in the 50% Thidiazuron ethephon agent.
Fig. 3 is the Thidiazuron linear relationship chart.
Embodiment
Below in conjunction with specific embodiment the present invention is done further elaboration, but the present invention is not limited to following examples.Said method is conventional method if no special instructions.Said material all can get from open commercial sources if no special instructions.
Employed experimental technique is conventional method like no specified otherwise among the following embodiment.
Used material, reagent etc. like no specified otherwise, all can obtain from commercial sources among the following embodiment.
Test plant is a cotton, and kind is cotton No. 8 of agricultural university, and Agricultural University Of Hebei cotton breeding research department cultivates, and is numbered the Ji and examines cotton No. 2006001, and the public can buy from market.
Supply the reagent agent:
Thidiazuron (purity is 98% former medicine and 50% wetting powder, available from Sichuan state light farmingization limited company); Ethrel (purity is 91% former medicine and 40% aqua, available from Huifeng Agricultural Chemistry Co., Ltd., Jiangsu).
The wetting agent Nekal BX is available from Earthquake of Anyang station in Henan dicyclo auxiliary agent Co., Ltd;
Wetting agent T-1004 is available from the graceful chemical industry of Nanjing Hensel Co., Ltd, commercial disignation " T-1004 ";
Dispersant polycarboxylate is the copolymer of acrylic acid and maleic anhydride, and weight average molecular weight is 15000～30000, available from the Beijing Guangyuan Yinong Chemical Co.,Ltd, and trade name GY-D06;
The dispersant sodium lignin sulfonate is available from Earthquake of Anyang station in Henan dicyclo auxiliary agent Co., Ltd;
The thickener bentonite is available from Xinyang, the Henan meticulous bentonite of prosperous richness Co., Ltd;
The weight average molecular weight of thickener carboxymethyl cellulose is 250,000～700,000, available from Shandong Wei Fang Z-TEK composite Co., Ltd;
Preservative card pine, a kind of preservative that German foreign cherry group produces, external trade name is " KATHON CG ", its active component is the isothiazolinone compounds;
Defoamer TSA 775, a kind of silicone defoaming agent of Japan's day nitre Co., Ltd. production, available from Wei Laihui south Co., Ltd of group (China), commercial disignation is " TSA 775 ";
Defoamer SAG 630, a kind of nonionic silicone defoaming agent that Co., Ltd produces in the U.S. Ao Sijia organosilicon, available from the inferior trade Co., Ltd of Hangzhou Weir, commercial disignation is " SAG 630 ".
The character detection method of aqueous suspension agent is following among the embodiment 1～5:
Character detects: carry out product according to the aqueous suspension agent quality control index and detect, index includes effective component content, pH scope, suspensibility, pourability, dispersed stability, low-temperature stability and heat storage stability etc.Concrete grammar is following:
Active ingredient Thidiazuron content: use the high performance liquid chromatograph (U.S. Agilent company, 1200) of band UV-detector to carry out.Pipette 1.0ml and make sample, place the 50ml volumetric flask, be settled to scale with distilled water, mixing.Pipette concentrated ammonia liquor 1.0ml, place the 50ml volumetric flask, be settled to scale with distilled water, mixing.The aqueous suspension agent sample solution 1.0ml that accurately pipettes the Thidiazuron ethrel after the dilution is in the 10ml centrifuge tube; Add the ammoniacal liquor after 1.0ml dilutes; After the vortex concussion mixed, the ultrasonic 5min that uncaps was cooled to room temperature; The centrifugal 5min of 5000rpm; Abandoning supernatant, lower sediment are used the 5ml dissolve with methanol, the vortex concussion; Cross 0.45 μ m filter membrane, to be measured.High-efficient liquid phase chromatogram condition is following, and the chromatographic column specification is the stainless steel column of Agilent Eclipse Plus C18, particle diameter 5 μ m, 4.6 * 250mm; Column temperature: 25 ℃; Detect wavelength: 288nm; Flowing phase: acetonitrile: water (40: 60) mixed solution; Flow velocity: 1.0ml/min; Sampling volume: 10 μ l; Retention time: 6.1min.With the Thidiazuron standard items is external standard, with peak area method Thidiazuron in the sample is carried out quantitatively.
The liquid chromatogram of the Thidiazuron in standard items and the 50% Thidiazuron ethephon agent is seen accompanying drawing 1 and accompanying drawing 2.With Thidiazuron concentration (mg/L) is abscissa, and the Thidiazuron peak area is an ordinate drawing standard curve, and getting linear equation is y=36.685x+23.242, and its linearly dependent coefficient is 0.9999.The determination data of correlation is seen table 1 and accompanying drawing 3.
Table 1, Thidiazuron linear relation are measured the result
| Thidiazuron concentration (mg/L) | 69.06500 | 34.53250 | 17.26625 | 8.633125 | 4.3165625 |
| The Thidiazuron peak area | 2554.1 | 1289.1 | 675.5 | 332.5 | 174.0 |
The content of active ingredient ethrel: carry out with reference to GB 23554-2009.The method principle is following: sample is neutralized to alkalescence, generates the ethrel disodium salt, the heating back generates ethene and sodium dihydrogen phosphate, with sodium hydroxide titration determination biphosphate sodium content, calculates the ethrel mass fraction thus.Concrete grammar is following: the aqueous suspension agent sample solution 25ml of measuring the Thidiazuron ethrel after the dilution adds 75ml distilled water in the 200ml centrifugal bottle, the centrifugal 3min of 5000rpm pours in the 250ml triangular flask supernatant subsequent use; In sample solution, add 10 thymol blue reagent; It is 8.0 (measuring with pH meter) that the following adding of stirring 0.5M NaOH solution makes sample solution pH value; Dropping sodium standard titration solution to sample solution becomes blueness by yellow again; Place boiling water bath to heat 30min triangular flask immediately; The ethrel disodium salt is decomposed fully; Be cooled to room temperature, become blueness with sodium hydroxide standard titration solution titration to sample solution by yellow under stirring and be terminal point; Calculate ethrel content according to standard method.
PH value: carry out according to pH meter method among the GB/T 1601.
Suspensibility: take by weighing 1.0 gram samples and pour the band plug graduated cylinder that 250 milliliters of standard hard water are housed into, the time that record product all breaks away from liquid level is wetability: repeatedly put upside down graduated cylinder back and forth, the number of times that the whole disintegrations of record sample disperse is dispersion (disintegration) property; After putting upside down graduated cylinder 30 times back and forth, leave standstill that the record foam volume is the foaming characteristic of product after 30 seconds; After leaving standstill 30 minutes, remove graduated cylinder upper strata 90% volume solution to the w that weighs with vavuum pump
1The dried and clean culture dish, and move to culture dish 2 times with a small amount of standard hard water flushing graduated cylinder, dry to constant weight w for 80 ℃
2, calculate suspensibility %=(1-(w
2-w
1)) * 10/9 * 100%.
Pourability: after will placing the suspending agent sample placement certain hour of container, program is toppled over according to the rules, measures the amount that is trapped in sample in the container, calculates the residue after toppling over and washs the back residue.
Dispersion stabilization: in the 250ml graduated cylinder, inject the 249ml running water, draw 1ml aqueous suspension agent sample,, observe its deployment conditions from splashing in the water apart from graduated cylinder water surface 5cm with syringe.
Low-temperature stability: carry out according to GB/T 19137-2003 method.
Heat storage stability: carry out according to GB/T 19136-2003 method.
The preparation (1 to 3) of embodiment 1,10% Thidiazuron ethrel aqueous suspension agent
Former medicine and auxiliary agent are selected and proportioning is: former medicine 2.6 mass parts of 98% Thidiazuron (pure 2.5 mass parts); Former medicine 8.3 mass parts of 91% ethrel (pure 7.5 mass parts); Wetting agent is Nekal BX 0.5 mass parts; Dispersant is that weight average molecular weight is 15; 000～30; 000 polycarboxylate 5 mass parts; Thickener is that weight average molecular weight is 250; 000～700; 000 carboxymethyl cellulose 1 mass parts, preservative is loose 1 mass parts of card, antifreezing agent is urea 10 mass parts; Defoamer is the TSA7750.1 mass parts, and surplus is a water.
Load weighted Thidiazuron, ethrel, dispersant, wetting agent, antifreezing agent, preservative and water are added in the agitated reactor, start clipper 3000rpm and shear 30min; Grind 2h with shearing good material through sand mill, add load weighted defoamer while grinding, ground material is added load weighted thickening stabilizing agent, 3000rpm shearing 15min.
The performance indications of 10% Thidiazuron ethrel aqueous suspension agent of embodiment 1 preparation are: Thidiazuron content 2.51% (quality percentage composition); Ethrel content 7.52% (quality percentage composition); PH value 1.4, suspensibility 90% is dispersed qualified; Topple over back residue 1.5%; Washing back residue 0.3%, low-temperature stability is qualified, and heat storage stability is qualified; Heat storage back active ingredient Thidiazuron resolution ratio 0.5%, the resolution ratio 1.0% of active ingredient ethrel.
The preparation (1 to 2.5) of embodiment 2,20% Thidiazuron ethrel aqueous suspension agent
Former medicine and auxiliary agent are selected and proportioning is: former medicine 5.9 mass parts of 98% Thidiazuron (pure 5.8 mass parts); Former medicine 15.8 mass parts of 91% ethrel (pure 14.4 mass parts); Wetting agent is T-1004 1 mass parts; Dispersant is that number-average molecular weight is 5000～10,000 sodium lignin sulfonate 10 mass parts, and thickener is bentonite 2 mass parts; Preservative is Sodium Benzoate 0.5 mass parts; Antifreezing agent is propane diols 3 mass parts, and defoamer is SAG 630 0.3 mass parts, and surplus is a water.
Load weighted Thidiazuron, ethrel, dispersant, wetting agent, antifreezing agent, preservative and water are added in the agitated reactor, start clipper 5000rpm and shear 10min; Grind 4h with shearing good material through sand mill, add load weighted defoamer while grinding, ground material is added load weighted thickening stabilizing agent, 5000rpm shearing 10min.
The performance indications of 20% Thidiazuron ethrel aqueous suspension agent of embodiment 2 preparations are: Thidiazuron content 5.73% (quality percentage composition); Ethrel content 14.34% (quality percentage composition); PH value 1.5, suspensibility 88% is dispersed qualified; Topple over back residue 1.7%; Washing back residue 0.2%, low-temperature stability is qualified, and heat storage stability is qualified; Heat storage back active ingredient Thidiazuron resolution ratio 1.0%, active ingredient ethrel resolution ratio 0.8%.
The preparation (1 to 10) of embodiment 3,44% Thidiazuron ethrel aqueous suspension agent
Former medicine and auxiliary agent are selected and proportioning is: former medicine 4.2 mass parts of 98% Thidiazuron (pure 4.1 mass parts); Former medicine 44.1 mass parts of 91% ethrel (pure 40.1 mass parts), wetting agent is neopelex 2 mass parts, dispersant is NNO 1 mass parts; Thickener is that weight average molecular weight is 200; 000～2,000,000 xanthans 0.1 mass parts; Preservative is loose 0.1 mass parts of card; Antifreezing agent is ethylene glycol 5 mass parts, and defoamer is SAG 630 1 mass parts, and surplus is a water.
Load weighted Thidiazuron, ethrel, dispersant, wetting agent, antifreezing agent, preservative and water are added in the agitated reactor, start clipper 2000rpm and shear 60min; Grind 1h with shearing good material through sand mill, add load weighted defoamer while grinding, ground material is added load weighted thickening stabilizing agent, 2000rpm shearing 30min.
The performance indications of 44% Thidiazuron ethrel aqueous suspension agent of embodiment 3 preparations are: Thidiazuron content 4.05% (quality percentage composition); Ethrel content is 40.02% (quality percentage composition); The pH value is 1.4, and suspensibility is 91%, and is dispersed qualified; Topple over back residue 1.3%; Washing back residue 0.3%, low-temperature stability is qualified, and heat storage stability is qualified; Heat storage back active ingredient Thidiazuron resolution ratio 0.7%, active ingredient ethrel resolution ratio 1.2%.
The preparation (1 to 4) of embodiment 4,60% Thidiazuron ethrel aqueous suspension agent
Former medicine and auxiliary agent are selected and proportioning is: former medicine 12.4 mass parts of 98% Thidiazuron (pure 12.1 mass parts); Former medicine 52.9 mass parts of 91% ethrel (pure 48.1 mass parts); Wetting agent is neopelex 2 mass parts; Dispersant is that number-average molecular weight is 5000～10; 000 sodium lignin sulfonate 5 mass parts; Thickener is that weight average molecular weight is 200; 000～2; 000; 000 xanthans 0.5 mass parts, preservative are Sodium Benzoate 0.5 mass parts, and antifreezing agent is urea 4 mass parts; Defoamer is TSA 7750.5 mass parts, and surplus is a water.
Load weighted Thidiazuron, ethrel, dispersant, wetting agent, antifreezing agent, preservative and water are added in the agitated reactor, start clipper 3000rpm and shear 60min; Grind 3h with shearing good material through sand mill, add load weighted defoamer while grinding, ground material is added load weighted thickening stabilizing agent, 4000rpm shearing 20min.
The performance indications of 60% Thidiazuron ethrel aqueous suspension agent of embodiment 4 preparations are: Thidiazuron content 12.09% (quality percentage composition); Ethrel content 48.02% (quality percentage composition); PH value 1.5, suspensibility 92% is dispersed qualified; Topple over back residue 1.4%; Washing back residue 0.2%, low-temperature stability is qualified, and heat storage stability is qualified; Heat storage back active ingredient Thidiazuron resolution ratio 0.9%, active ingredient ethrel resolution ratio 1.1%.
The preparation (1 to 1) of embodiment 5,80% Thidiazuron ethrel aqueous suspension agent
Former medicine and auxiliary agent are selected and proportioning is: former medicine 40.9 mass parts of 98% Thidiazuron (pure 40.1 mass parts); Former medicine 44.1 mass parts of 91% ethrel (pure 40.1 mass parts); Wetting agent is Nekal BX 5 mass parts; Dispersant is that weight average molecular weight is 15; 000～30; 000 polycarboxylate 3 mass parts; Thickener is that weight average molecular weight is 250; 000～700; 000 carboxymethyl cellulose 0.2 mass parts, preservative is loose 0.2 mass parts of card, antifreezing agent is ethylene glycol 2 mass parts; Defoamer is SAG 6300.2 mass parts, and surplus is a water.
Load weighted Thidiazuron, ethrel, dispersant, wetting agent, antifreezing agent, preservative and water are added in the agitated reactor, start clipper 4000rpm and shear 20min; Grind 4h with shearing good material through sand mill, add load weighted defoamer while grinding, ground material is added load weighted thickening stabilizing agent, 5000rpm shearing 10min.
The performance indications of 80% Thidiazuron ethrel aqueous suspension agent of embodiment 5 preparations are: Thidiazuron content 40.07% (quality percentage composition); Ethrel content 40.03% (quality percentage composition); PH value 1.4, suspensibility 87% is dispersed qualified; Topple over back residue 1.5%; Washing back residue 0.2%, low-temperature stability is qualified, and heat storage stability is qualified; Heat storage back active ingredient Thidiazuron resolution ratio 0.7%, active ingredient ethrel resolution ratio 1.3%.
Embodiment 6, field trial
Test place: Hejian City, Hebei province state glad kind industry company yielding Demonstration field
Cotton variety is cotton No. 8 of agricultural university, and Agricultural University Of Hebei cotton breeding research department cultivates.
Sowing on April 26, density is 37500 strain/hectares, adopts the randomized block experiment design, establishes 32 sub-districts altogether, and each zone leader is 6.0m, and the wide 4.0m that is amounts to 90 strains of every sub-district.
If clear water contrast; The quality percentage composition of ethrel is 40% 1500 milliliters/hectare of ethephon agents (being called for short " ethrel "); The quality percentage composition of Thidiazuron is 50% Thidiazuron wetting powder 300 gram/hectares (being called for short " Thidiazuron "); Embodiment 1 7500 milliliters/hectare of preparation gained aqueous suspension agents (being called for short " aqueous suspension agent 1 "); Embodiment 2 2150 milliliters/hectare of preparation gained aqueous suspension agents (being called for short " aqueous suspension agent 2 "); Embodiment 3 3300 milliliters/hectare of preparation gained aqueous suspension agents (being called for short " aqueous suspension agent 3 "); Embodiment 4 1250 milliliters/hectare of preparation gained aqueous suspension agents (being called for short " aqueous suspension agent 1 "); The quality percentage composition of forming the per hectare 300 gram Thidiazurons of conversion by embodiment 4 active ingredients is that the quality percentage composition of 50% Thidiazuron wetting powder+1500 milliliter ethrel is 937.5 milliliters of/hectare (being called for short " aqueous suspension agent 5 ") 8 processing altogether of ethephon agent combination (being called for short " bucket mixture ") and embodiment 5 preparation gained aqueous suspension agents of 40%.
In above-mentioned 8 processing, amount of liquid medicine is 750 kilograms/hectare, repeats 4 times.The blow-of-cottons rate reaches 45% cun (September 25) foliar spray to be handled 1 time, and dispenser was fine the same day, and duration of test does not have strong wind.Cotton plant the investigation number of blade, blow-of-cottons bell number and the blue or green bell number of 20 strain growing way uniformities chosen in every sub-district before the dispenser, handles back investigation in the 14th day disleave rate and blow-of-cottons rate:
Disleave rate (%)=(dispenser front vane number-dispenser rear blade number)/dispenser front vane number * 100%
Blow-of-cottons number before blow-of-cottons rate (%) before the dispenser=dispenser/total bell number * 100%
Blow-of-cottons number after blow-of-cottons rate (%)=dispenser after the dispenser/total bell number * 100%
The branch sub-district is carried out unginned cotton and is received flower, handles and gathers for the first time in back 14 days, and October 25 gathered for the second time, average 1 colored output of calculation plot and average yield, and the result sees table 2.
Table 2, different disposal are to the influence of cotton defoliation, blow-of-cottons and output
Annotate: 1 colored output and gross yield are the mean value of cell production in the table 2.
The result shows; The aqueous suspension agent 1～5 of the present invention's preparation has disleave preferably and blow-of-cottons effect; Can improve and once spend output; Gross yield is suitable with contrast; The comprehensive disleave and the effect of accelerating the ripening; The effect of embodiment 4 gained aqueous suspension agents is more excellent, carries out the mixed treatment effect of bucket with two kinds of single agent and does not have significant difference, and the excellent popularization using value is arranged.
Claims (8)
1. aqueous suspension agent that is used to promote that cotton leaf comes off and accelerates the ripening with the cotton boll cracking, its active ingredient is Thidiazuron and ethrel.
2. aqueous suspension agent according to claim 1 is characterized in that: said aqueous suspension agent also comprises wetting agent, dispersant, thickener, antifreezing agent, defoamer, preservative and water.
3. aqueous suspension agent according to claim 1 and 2 is characterized in that: said aqueous suspension agent is made up of said Thidiazuron, said ethrel, said wetting agent, dispersant, thickener, antifreezing agent, defoamer, preservative and water.
4. according to claim 2 or 3 described aqueous suspension agents, it is characterized in that: said wetting agent is selected from least a among Nekal BX, neopelex and the T-1004;
Said dispersant is selected from least a in sodium lignin sulfonate, polycarboxylate and the sodium metnylene bis-naphthalene sulfonate; The number-average molecular weight of said sodium lignin sulfonate is 5000～10,000; The weight average molecular weight of said polycarboxylate is 15,000～30,000;
Said thickener is selected from least a in xanthans, carboxymethyl cellulose and the bentonite; The weight average molecular weight of said xanthans is 200,000～2,000,000; The weight average molecular weight of said carboxymethyl cellulose is 250,000～700,000;
Said antifreezing agent is selected from least a in ethylene glycol, propane diols and the urea;
Said defoamer is selected from least a among TSA775 and the SAG 630;
Said preservative is selected from least a among Sodium Benzoate and the Ka Song.
5. according to the arbitrary described aqueous suspension agent of claim 1～4, it is characterized in that:
The mass percent that the gross weight of said Thidiazuron and ethrel accounts for said aqueous suspension agent is 10%～80%, and is preferred 20%～60%, more preferably 60%;
The mass ratio of said Thidiazuron and ethrel is 1: 1～10, preferred 1: 2.5～5, and more preferably 1: 4;
It is 0.5%～5% that said wetting agent accounts for said aqueous suspension agent mass percent, preferred 1%～2%, more preferably 2%;
It is 1%～10% that said dispersant accounts for said aqueous suspension agent mass percent, preferred 3%～5%, more preferably 5%;
It is 0.1%～2% that said thickener accounts for said aqueous suspension agent mass percent, preferred 0.2%～0.5%, more preferably 0.5%;
It is 2%～10% that said antifreezing agent accounts for said aqueous suspension agent mass percent, preferred 3%～5%, more preferably 4%;
It is 0.1%～1% that said defoamer accounts for said aqueous suspension agent mass percent, preferred 0.2%～0.5%, more preferably 0.5%;
It is 0.1%～1% that said preservative accounts for said aqueous suspension agent mass percent, preferred 0.2%～0.5%, more preferably 0.5%;
Surplus is said water.
6. a method for preparing the arbitrary said aqueous suspension agent of claim 1～5 comprises the steps: each the component mixing in the arbitrary said aqueous suspension agent of claim 1～5 is obtained said aqueous suspension agent.
7. method according to claim 6 is characterized in that: in the said mixing step, the mixing step comprises shearing, grinds and shear step; In the said shearing step, rotating speed is 2000～5000rpm, preferred 3000rpm, and the time is 10～60 minutes, preferred 30 minutes; In the said grinding steps, the time is 1～4 hour, preferred 2 hours; The said shearing again in the step, rotating speed is 2000～5000rpm, preferred 3000rpm, the time is 10～30 minutes, preferred 15 minutes.
8. the application of the arbitrary said aqueous suspension agent of claim 1～5 in promoting cotton leaf to come off to accelerate the ripening with the cotton boll cracking.
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| CN105901010A (en) * | 2016-06-03 | 2016-08-31 | 扬州大学 | Agent special for defoliating and ripening cotton in wetland |
| CN106305766A (en) * | 2015-06-16 | 2017-01-11 | 济源艾格弗作物保护有限公司 | Cotton defoliating agent |
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| CN103503916A (en) * | 2012-06-16 | 2014-01-15 | 新疆农垦科学院 | High efficiency ripening and defoliating agent special for machine-harvested cotton |
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| CN105901010A (en) * | 2016-06-03 | 2016-08-31 | 扬州大学 | Agent special for defoliating and ripening cotton in wetland |
| WO2018059605A3 (en) * | 2016-09-28 | 2018-07-19 | 江苏辉丰生物农业股份有限公司 | Plant growth regulator |
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| CN111264550A (en) * | 2020-03-30 | 2020-06-12 | 中国农业科学院棉花研究所 | Cotton defoliating agent composition and application thereof |
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