CN104472521B - A kind of cotton defoliant - Google Patents
A kind of cotton defoliant Download PDFInfo
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- CN104472521B CN104472521B CN201410590040.6A CN201410590040A CN104472521B CN 104472521 B CN104472521 B CN 104472521B CN 201410590040 A CN201410590040 A CN 201410590040A CN 104472521 B CN104472521 B CN 104472521B
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Abstract
The invention discloses a kind of cotton defoliant being applied to the Cotton Gossypii later stage, containing the active component tebuthiuron that weight percentage is 5%～75% and Thidiazuron, wherein the weight ratio of tebuthiuron and Thidiazuron is 1:1～1:30.The dosage form of this defoliant is water dispersible granules, aqueous suspension agent or dispersibles this kind of environmentally friendly dosage form of oil-suspending agent, water dispersible granules therein and the aqueous suspension agent plant oil spray adjuvants in the appropriate to the occasion addition spraying liquid measure 0.3%～1.0% of field spray use to increase defoliation effect.This defoliant field disleave application test shows: after treatment in the disleave rate of investigation in the 15th day, relatively market routine disleave product 50% Thidiazuron wettable powder improves 28.6%～37.1%, and blow-of-cottons rate improves 5.2%～12.7%.
Description
Technical field
The invention belongs to pesticide field, specifically a kind of cotton defoliant, especially with the cotton defoliant of tebuthiuron and Thidiazuron.
Background technology
Development along with social economy and science and technology; Cotton Industry has also welcome good opportunity; for realizing Cotton Gossypii large-scale development, the economic benefit of enhancing Cotton Production provides condition, Mechaniaed harvest and processing has become the inexorable trend of the cotton region Cotton Production development such as Xinjiang.Mechaniaed harvest not only contributes to improve Cotton Gossypii per unit area yield, quality and the economic benefit that increases, save cost.In recent years, the mechanized cultivation of Cotton Gossypii and process large scale application, and cotton mechanization to pluck development relatively slow, become the principal element of restriction Xinjiang cotton industry development.The artificial cotton streaking plucked is even, brings much inconvenience to the transport of Cotton Gossypii, storage, is unfavorable for production management, run into labour force in short supply time, it is easy to bring about great losses, manually pick up flower and bring potential risk to Cotton Production.
Machine cotton picking have to spray ripener and defoliant before gathering, and the time that defoliant (hormonal regulation type) drug effect plays needs about 15-20 days, now Cotton Gossypii is in the critical period that autumn Fructus Persicae is ripe, if selection and the opportunity of sprinkling in defoliant kind are improper, the Maturity of Cotton Gossypii can be directly influenced, cause Semen Gossypii not full, affect mass of 1000 kernel, thus affecting yield and the grade of Cotton Gossypii further.On the contrary, if the selection of defoliant kind and the opportunity of sprinkling are proper, under the premise good in disleave, Maturity is good, it is possible not only to be greatly improved the efficiency of machine cotton picking, simultaneously, the aspects such as the leaf bits content to reduction machine cotton picking flower, improves the grade of Cotton Gossypii, the link of minimizing clearing up and processing play vital effect.Therefore, the selection of defoliant kind and use technology thereof are important steps in machine cotton picking technology, and whether appropriate and the technology of use the quality of the selection of defoliant kind directly influences yield and the grade of machine cotton picking flower.
At present, the main defoliant used is divided into by disleave mechanism: weeding-type defoliant and hormonal regulation type defoliant.As its name suggests, weeding-type defoliant effective ingredient is herbicide, because cotton leaf is had direct killing effect by herbicide, cotton leaf quick death after sprinkling, causes blade " marcescence ", sprays the incorrect yield not only affecting Cotton Gossypii and affect quality of gathering simultaneously.The mechanism of hormonal regulation type defoliant is then by regulating plant hormone content, promoting leaf senile to come off, and Cotton Gossypii direct killing effect is less, is the defoliant type being currently mainly used.
Cotton Gossypii Chemical defoliation, guarantee machinery cotton picking of accelerating the ripening, the cotton region such as Xinjiang is saved cost and increase benefit, to improve China's raw cotton competitiveness in the international market particularly important.Preparation effective ingredient main in the market is Thidiazuron (treasured that comes off, real skill, de-clear, Rui Tuolong).But reduced by the synergistic function between different compounds that to make consumption be also the main purpose that Cotton Gossypii is accelerated the ripening, defoliant is composite with mixed with cost.The complex agent type of both weeding-type defoliant and hormonal regulation type defoliant, most represent the example of type for de-tell grand, for the built agent of Thidiazuron and diuron.
Summary of the invention
It is an object of the invention to provide a kind of novel cotton defoliant, under the premise good in disleave, Maturity is good, it is possible not only to be greatly improved the efficiency of machine cotton picking, simultaneously, to the leaf bits content reducing machine cotton picking flower, improving the quality of Cotton Gossypii, the aspect such as link reducing clearing up and processing plays vital effect.
A kind of cotton defoliant, it is characterised in that described defoliant contains the active component tebuthiuron and Thidiazuron that weight percentage is 5%～75%, and wherein the weight ratio of tebuthiuron and Thidiazuron is 1:1～1:30.
Further, described defoliant also includes one or more formulating agents.In the cotton defoliant of the present invention, all the other compositions are allow in pesticide to use and acceptable composition, including emulsifying agent, dispersant, wetting agent, disintegrating agent, stabilizer etc., other is of value to the known substance that effective ingredient is stablized in the formulation and drug effect plays, and concrete composition and consumption are tested according to recipe requirements and determined.
The dosage form of described cotton defoliant is water dispersible granules, aqueous suspension agent or dispersibles the environmentally friendly dosage forms such as oil-suspending agent.
In order to increase defoliation effect, described cotton defoliant water dispersible granules therein and aqueous suspension agent use the appropriate to the occasion plant oil spray adjuvants adding spraying liquid measure 0.3%～1.0% in field.Described plant oil spray adjuvants, raw material is Renewable resource and environmentally friendly, including any one in esterification soybean oil, esterification Oleum Brassicae campestris, esterification Oleum Helianthi, esterification Oleum Arachidis hypogaeae semen, esterification Semen Maydis oil, esterification Oleum Gossypii semen, esterification Semen Lini oil or esterification Oleum Ricini or multiple.
Thidiazuron (thidiazuron) has another name called Thidiazuron, disleave spirit, come off treasured, chemical name: 1-phenyl-3-(1, and 2,3 ,-thiadiazoles-5-base) urea.Thidiazuron is made defoliant on cotton planting and is used, and after being absorbed by plant, can promote that the chorista self-assembling formation between petiole and stem comes off ahead of time, thus improving harvest efficiency and improving cotton grade.
Tebuthiuron (Tebuthiuron) has another name called Metribuzin, terbufos benzthiazuron, and chemical name: N-(5-tertiary butyl-1,3,4 ,-thiadiazoles-2-base)-N, N'-dimethyl urea.Interior suction selective herbicide, mainly through root absorption, then conducts to cane and leaf, it is suppressed that photosynthesis, prevents and kill off annual and perennial weeds.Annual grassy weeds can be prevented and kill off Fructus Hordei Vulgaris, Semen Tritici aestivi, Cotton Gossypii, Caulis Sacchari sinensis, Radix Dauci Sativae Tanaka, consumption 2.5～10kg/ha before bud, consumption 0.5kg/ha after bud, also apply be applicable to non-farming district, pasture, highway and industrial occupancy and prevent and kill off all kinds of weeds, woody, the draft class plant in pasture and sugarcane field is had specially good effect.
Tebuthiuron disclosed by the invention and Thidiazuron are weeding-type defoliant and the complex preparation of hormonal regulation type defoliant.Tebuthiuron belongs to systemic herbicide, according to the data retrieved and application practice for many years, no matter it is the granule of tebuthiuron, water dispersible granules or aqueous suspension agent, contributes to soil treatment, mainly through root absorption, then conduct to cane and leaf and have an effect.We find that tebuthiuron is applied to Cotton Gossypii foliar spray and processes in practice, it is also possible to are absorbed by cotton leaf, work subsequently into conduction in plant, it is suppressed that photosynthesis, promote that the aging of leaf comes off.And in disleave is tested, find that tebuthiuron uses together with hormone-type regulator Thidiazuron, has obvious synergistic function, it is possible to it is substantially reduced the consumption that makes of Thidiazuron, shortens action period and improve disleave rate.In the cotton in Xinjiang land for growing field crops application test of nearly 3 years, display can substantially reduce medicament makes consumption and drug cost, more may insure that and improves cotton grade under output of cotton is without the premise of impact.Disleave application test in defoliant field of the present invention shows: after treatment in the disleave rate of investigation in the 15th day, relatively market routine disleave product 50% Thidiazuron wettable powder improves 28.6%～37.1%, and blow-of-cottons rate improves 5.2%～12.7%.
Tebuthiuron disclosed by the invention and Thidiazuron compound synergic defoliant, can adopt water dispersible granules, aqueous suspension agent or dispersible this kind of environmentally friendly novel form kind of oil-suspending agent.The Traditional Agricultural pharmaceutically dosage forms such as cream, wettable powder, powder because containing a large amount of benzene kind solvents or dust, causing serious pollution and harm to environment and personnel.Researching and developing without aromatic hydrocarbons, without dust, pesticides new formulation environmentally friendly, to personal security is the important directions that the formulations of pesticide develop.
Water dispersible granules is one of important development direction of environmental protection type agricultural chemical dosage form, effectively avoids the weak point of conventional dosage forms, has advantage highlighted below: 1. do not use organic solvent, without dust from flying, to operator's safety；2. active constituent content is high, is particularly well-suited to pesticide species unstable in water；3. hardness and relative density are relatively big, and adhesion does not lump, good fluidity, it is simple to packaging, storage and transport；4. disintegration rate is fast, to water temperature and water quality strong adaptability.
Aqueous suspension agent has the advantage that being compatible with the environment property is good 1. with water for substrate, is one of 21 century pesticides new formulation developing direction；2. granule is little, and suspensibility is high, good drug efficacy；3. cost is low, process safety；4. use conveniently, safely.
Dispersibling that oil-suspending agent refers to can as builder and do not pollute the oils of the crop environmentally friendly novel form kind as dilution carrier by a class, and oils is mainly vegetable oil or derivatives thereof.Oils itself as dilution carrier has good cohesiveness and plate-out ability, it is easy to adhere to waxiness or smooth blade face, so dispersibling oil-suspending agent have the advantages such as good cohesiveness and plate-out ability, ability to resist splash erosion are strong in use.It addition, to some instability in water-based system, it is easy to the pesticide of the phenomenons such as decomposition, livering occurs, it is processed into and dispersibles oil-suspending agent, both can solve the stability problem of dosage form, and the permeability of active component and interior absorption can have been improved again, be conducive to the performance of drug effect.
Detailed description of the invention
The present invention in order to illustrate, but is not limited to these examples with the following example that is embodied as.In all formula, percentage ratio is weight ratio.
The preparation of water dispersible granules: conventional extruder grain method.By former medicine and various auxiliary agent mix homogeneously, comminution by gas stream, carry out scraper plate extruder grain after the kneading that adds water, then carry out drying and sieving obtaining product.
Embodiment 1:Tebuthiuron 1%, Thidiazuron 30%, pull open powder 3%, polycarboxylate sodium 4%, naphthalene sulfonate salt 5%, and ammonium sulfate 10%, Kaolin supplies 100%.
Embodiment 2:Tebuthiuron 5%, Thidiazuron 50%, pull open powder 3%, polycarboxylate sodium 4%, naphthalene sulfonate salt 5%, sodium sulfate 10%, and corn starch 10%, Kaolin supplies 100%.
The preparation of aqueous suspension agent: after weighing two kinds of former medicines, add necessary various auxiliary agents and water, use and cut at a high speed
Machine of cutting is sheared after uniformly, loads sand mill sand milling, obtains homogeneous aqueous suspension agent finished product after filtration.
Embodiment 3: tebuthiuron 3%, Thidiazuron 30%, lignin sulfonic acid sodium salt 1%, polyether phosphate ammonium salt 4%, xanthan gum 0.2%, sodium benzoate 1%, propylene glycol 3%, defoamer 0.4%, water supplies 100%.
Embodiment 4: tebuthiuron 5%, Thidiazuron 40%, lignin sulfonic acid sodium salt 2%, polyether phosphate ammonium salt 4%, polycarboxylate sodium 2%, xanthan gum 0.2%, sodium benzoate 1%, propylene glycol 3%, and defoamer 0.4%, water supplies 100%.
Dispersible the preparation of oil-suspending agent:Two kinds of former medicines are weighed in container, adds emulsifying agent and dispersant, vegetable oil, organoclay mix homogeneously, load sand mill sand milling, be filtrated to get homogeneous finished product.
Embodiment 5: tebuthiuron 2%, Thidiazuron 30%, triphenyl vinyl phenol polyoxyethylene ether phosphate tri ethanol ammonium salt 3%, alkylphenol polyoxyethylene 3%, Colophonium grafting EO-PO block copolymer 2%, organobentonite 1.5%, soybean oil supplies 100%.
Embodiment 6: tebuthiuron 5%, Thidiazuron 20%, triphenyl vinyl phenol polyoxyethylene ether phosphate tri ethanol ammonium salt 8%, styryl phenol polyethenoxy ether 8%, organobentonite 2%, methyl oleate supplies 100%.
Embodiment 7:Application test:
Test period and place: in JIUYUE, 2013 Shihezi of Xinjiang.
Experimental cultivar；Early No. 26, new land.
Test method: adopting randomized block experiment design, often 4 communities of group, each zone leader 3 meters, wide is 2.3 meters, about 120 strain of each community.
If the oil-suspending agent 45 grams/acre of oil-suspending agent 20 grams/acre prepared by clear water comparison, the water dispersible granules 33 grams/acre of 50% Thidiazuron wettable powder 40 grams/acre, embodiment 1 preparation, the water dispersible granules 15 grams/acre of embodiment 2 preparation, the aqueous suspension agent 33 grams/acre of embodiment 3 preparation, the aqueous suspension agent 25 grams/acre of embodiment 4 preparation, embodiment 5, embodiment 6 preparation amounts to 8 process.
Above-mentioned 8 process, spray liquid measure is 50 kgs/acre, all adds the methyl oleate spray adjuvants of 0.5% concentration in embodiment 1 therein, embodiment 2, embodiment 3 and embodiment 4.Blow-of-cottons rate reaches foliar spray when 35%～40% and processes 1 time.Dispenser Qian Mei chooses community the cotton plant investigation number of blade of 30 strain growing way uniformities, blow-of-cottons bell number and blue or green bell number, the 15th day investigation disleave rate and blow-of-cottons rate after process.
Disleave rate (%)=(dispenser front vane number-dispenser rear blade number)/dispenser front vane number × 100%
Blow-of-cottons bell number/total bell number × 100% before blow-of-cottons rate (%)=dispenser before dispenser
Blow-of-cottons bell number/total bell number × 100% after blow-of-cottons rate (%)=dispenser after dispenser
The different disposal survey result such as following table (in table, data are percentage ratio) to cotton defoliation rate, blow-of-cottons rate:
| Process | Disleave rate (%) | Blow-of-cottons rate (%) |
| Clear water processes | 31.5 | 70.9 |
| 50% Thidiazuron wettable powder | 56.8 | 78.3 |
| Embodiment 1 | 85.4 | 83.5 |
| Embodiment 2 | 92.6 | 88.1 |
| Embodiment 3 | 89.6 | 90.3 |
| Embodiment 4 | 89.1 | 86.9 |
| Embodiment 5 | 91.5 | 86.2 |
| Embodiment 6 | 93.9 | 91.0 |
Note: in table, disleave rate and blow-of-cottons rate are the meansigma methods of each 4 community survey datas.
It can be seen that the defoliant prepared of foregoing invention embodiment from upper table data, the disleave rate of ratio conventional use of 50% Thidiazuron wettable powder currently on the market investigation in the 15th day after treatment improves 28.6%～37.1%, blow-of-cottons rate improves 5.2%～12.7%.It is shown that the mixture containing tebuthiuron and Thidiazuron prepared by the present invention, cotton defoliation had good synergistic function, cotton defoliation speed can be accelerated and improve disleave rate and blow-of-cottons rate, it is easy to mechanical harvest, and the leaf that can be substantially reduced machine cotton picking flower considers content to be worth doing, improves cotton grade.
Claims (6)
1. a cotton defoliant, it is characterised in that described cotton defoliant contains the active component tebuthiuron and Thidiazuron that weight percentage is 5%～75%, and wherein the weight ratio of tebuthiuron and Thidiazuron is 1:1～1:30.
2. cotton defoliant as claimed in claim 1, it is characterised in that described cotton defoliant also comprises one or more formulating agents.
3. cotton defoliant as claimed in claim 2, it is characterised in that described formulating agents includes one or more in emulsifying agent, dispersant, wetting agent, disintegrating agent or stabilizer.
4. cotton defoliant as claimed in claim 1, it is characterised in that the dosage form of described cotton defoliant is water dispersible granules, aqueous suspension agent or dispersibles oil-suspending agent.
5. cotton defoliant as claimed in claim 4, it is characterised in that add the plant oil spray adjuvants of spraying liquid measure 0.3%～1.0% in field when described water dispersible granules and aqueous suspension agent use.
6. cotton defoliant as claimed in claim 5, it is characterized in that, described plant oil spray adjuvants include in esterification soybean oil, esterification Oleum Brassicae campestris, esterification Oleum Helianthi, esterification Oleum Arachidis hypogaeae semen, esterification Semen Maydis oil, esterification Oleum Gossypii semen, esterification Semen Lini oil or esterification Oleum Ricini any one or multiple.
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| CN201410590040.6A CN104472521B (en) | 2014-10-29 | 2014-10-29 | A kind of cotton defoliant |
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| CN201410590040.6A CN104472521B (en) | 2014-10-29 | 2014-10-29 | A kind of cotton defoliant |
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| CN101541166A (en) * | 2006-08-04 | 2009-09-23 | 北美爱利思达生命科学有限责任公司 | Defoliant composition and method |
| EP2052609A1 (en) * | 2007-10-24 | 2009-04-29 | Bayer CropScience AG | Herbicide combination |
| CN103518774B (en) * | 2013-10-31 | 2015-05-27 | 河南中威高科技化工有限公司 | Cotton defoliating agent |
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Effective date of registration: 20221025 Address after: 343000 Tengfei Branch Road, Salt Chemical Industrial City, Xingan County, Ji'an City, Jiangxi Province Patentee after: Jiangxi Hetian Technology Co.,Ltd. Address before: 310018 Plot M-18-5-4, Hangzhou Economic and Technological Development Zone, Hangzhou, Zhejiang Patentee before: ZHEJIANG HETIAN CHEMICAL Co.,Ltd. Patentee before: LIANYUNGANG HETIAN CHEMICAL Co.,Ltd. |
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