CN100367852C - Compound microemulsion of plant growth regulator, prepn. method and use thereof - Google Patents
Compound microemulsion of plant growth regulator, prepn. method and use thereof Download PDFInfo
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Abstract
A composite microemulsion used as plant growth regulator for wheat, soybean, peanut, paddy rice, etc contains mepiqnat chloride, uniconazole, cosolvent, emulsifier, stabilizer and water.
Description
Technical field
The invention belongs to agricultural technology field, the present invention relates to a kind of plant growth regualting composition microemulsion, relate in particular to and a kind ofly contain the first piperazine and uniconazole P is the plant growth regulator of active ingredient, echo the microemulsion that other inert fractions are prepared from.
Background technology
The prosperous long lodging of crops such as wheat, soybean, peanut, paddy rice brings very big loss to crop production, has also limited the further raising of output.Patent EP127944, Duan Liusheng etc. (agricultural chemicals journal, 2002) disclose first piperazine and paclobutrazol and have used with and prevent the wheat lodging, but paclobutrazol is long in the pedo relict time, has the environment unsafe factor.Uniconazole P is the triazole type plant growth regulator, and physiologically active is about 5-12 times of paclobutrazol, and safety is better than paclobutrazol.First piperazine and uniconazole P are used the synergistic effect that can utilize between conditioning agent with, reach desirable anti-down effect, eliminate the side effect of single usefulness simultaneously, reduce environmental pollution.But the polarity difference of these two kinds of active ingredients is very big, is difficult to use a kind of dissolution with solvents, therefore, is difficult to be prepared into microemulsion.
Microemulsion has (1) incombustibility by the pesticides new formulation that water-surfactant-the lipophilic ingredient ternary system is formed, and transportation stores convenient; (2) be solvent with water, do not corrode container.(3) reduce consumption of organic solvent, reduce environmental pollution.(4) particle of emulsion is ultra tiny, and penetration and the more conventional missible oil advantages of higher of effectiveness are very promising pesticides new formulations.
Summary of the invention
The objective of the invention is to be prepared into microemulsion the combination of first piperazine and uniconazole P and with inert fraction such as solvent.
The character characteristics that the inventor makes full use of first piperazine and uniconazole P are processed into microemulsion to composition, have finished the present invention.
The invention provides a kind of microemulsion, the percentage by weight of its each component is:
First piperazine 1%-60%
Uniconazole P 0.1%-50%
Cosolvent 1%-50%
Emulsifier 1%-30%
Stabilizing agent 1%-30%
Water surplus.
Microemulsion of the present invention, wherein the weight ratio of active ingredient first piperazine and uniconazole P is 0.2～100: 1; Preferred weight ratio is 25: 1.
Microemulsion of the present invention, wherein cosolvent is selected from one or more in dimethyl formamide, methyl alcohol, ethanol, the acetone; Preferred dimethyl formamide and ethanol.
Microemulsion of the present invention, wherein emulsifier is selected from one or more in triton x-100, OP-10, OP-21, dodecyl sodium sulfate, the Tween 80; Preferred triton x-100 and Tween 80.
Microemulsion of the present invention, wherein stabilizing agent can be selected from one or more in n-butanol, propyl alcohol, the glycerine.
The present invention also provides a kind of method for preparing described microemulsion, and it comprises the steps:
(1) dissolves uniconazole P fully with solvent or cosolvent, stir, make solution A;
(2) dissolve the first piperazine fully with a certain amount of water, make solution B;
(3) merge solution A and B, stir;
(4) add emulsifier, stabilizing agent, the polishing excess water stirs.
If need, microemulsion of the present invention can also have other auxiliary elements, as antifreezing agent etc.
Adopt liquid pesticidal processing method commonly used (Liu Bulin chief editor, formulations of pesticide process technology, chapter 11 microemulsion, Chemical Industry Press, second edition), above-mentioned each composition is evenly mixed, but both preparation cost invention microemulsions.
Microemulsion of the present invention is that outward appearance is uniformly colourless to the sundown transparency liquid, normal temperature density 0.998g/ml.
The purposes of microemulsion of the present invention is characterized in that, described microemulsion is applied to crop, and to regulate growth, the elongation of control stipes prevents prosperous length and lodging, increases output; Wherein crop is wheat, soybean, peanut, paddy rice, cotton, corn, potato, upland rice, flowers, vegetables, fruit tree etc.
In actual applications, the microemulsion dilute with water of the present invention of effective dose, spray, can regulate plant growth, the elongation of control stipes prevents prosperous length and lodging.The present invention can be used for various crop, comprises wheat, soybean, peanut, paddy rice etc.
Embodiment
The preparation experiment and the effect experiment example of following mask body are only made detailed description to the present invention, but are not limited the present invention.
Preparation embodiment 1:
First piperazine 16.0%
Uniconazole P 5.0%
Dimethyl formamide 10.0%
Ethanol 10%
Triton x-100 10%
N-butanol 5%
Water surplus
Dissolve uniconazole P fully with dimethyl formamide, add ethanol, stir, make solution A; With etc. weight water dissolve the first piperazine fully and make solution B; Solution A is mixed with solution B, stirs, and adds triton x-100 and n-butanol, and the polishing excess water stirs; The single-phase transparency liquid that is mixed with is present composition microemulsion.
Preparation embodiment 2:
First piperazine 15.0%
Uniconazole P 1.0%
Dimethyl formamide 30%
Methyl alcohol 10%
Triton x-100 8%
Tween-80 2%
N-butanol 5%
Water surplus
Dissolve uniconazole P fully with dimethyl formamide, add methyl alcohol, stir, make solution A; With etc. weight water dissolve the first piperazine fully, make solution B; Solution A is mixed with solution B, stirs, and adds triton x-100, Tween-80 and n-butanol, and the polishing excess water stirs; The single-phase transparency liquid that is mixed with is present composition microemulsion.
Preparation embodiment 3:
First piperazine 20.0%
Uniconazole P 3.3%
Methyl alcohol 10%
Ethanol 20%
Tween-80 10%
Glycerine 5%
Water surplus
Dissolve uniconazole P fully with methyl alcohol, add ethanol, stir, make solution A; With etc. weight water dissolve the first piperazine fully, make solution B; Solution A is mixed with solution B, stirs, and adds Tween-80 and glycerine, and the polishing excess water stirs; The single-phase transparency liquid that is mixed with is present composition microemulsion.
Preparation embodiment 4:
First piperazine 40.0%
Uniconazole P 0.5%
Dimethyl formamide 2%
Ethanol 1%
Dodecyl sodium sulfate 2%
OP-21 2％
Glycerine 2%
Water surplus
Dissolve uniconazole P fully with dimethyl formamide, add ethanol, stir, make solution A; With etc. weight water dissolve the first piperazine fully, make solution B; Solution A is mixed with solution B, stirs, and adds dodecyl sodium sulfate, OP-21 and glycerine, and the polishing excess water stirs; The single-phase transparency liquid that is mixed with is present composition microemulsion.
Preparation embodiment 4:
First piperazine 50.0%
Uniconazole P 0.1%
Methyl alcohol 2%
Tween 80 2%
OP-10 2％
Glycerine 1%
Water surplus
Dissolve uniconazole P fully with methyl alcohol, stir, make solution A; Water with 4/5 first piperazine weight dissolves the first piperazine fully, makes solution B; Solution A is mixed with solution B, stirs, and adds Tween-80, OP-10 and glycerine, and the polishing excess water stirs; The single-phase transparency liquid that is mixed with is present composition microemulsion.
Preparation embodiment 5:
First piperazine 5.0%
Uniconazole P 30.0%
Dimethyl formamide 30%
Ethanol 5%
Tween-80 5%
Glycerine 3%
Water surplus
Dissolve uniconazole P fully with dimethyl formamide, add ethanol, stir, make solution A; With etc. weight water dissolve the first piperazine fully, make solution B; Solution A is mixed with solution B, stirs, and adds Tween-80 and glycerine, and the polishing excess water stirs; The single-phase transparency liquid that is mixed with is present composition microemulsion.
Preparation embodiment 6:
First piperazine 2.0%
Uniconazole P 45.0%
Dimethyl formamide 40%
Ethanol 5%
Tween-80 3%
Glycerine 2%
Water surplus
Dissolve uniconazole P fully with dimethyl formamide, add ethanol, stir, make solution A; With etc. weight water dissolve the first piperazine fully, make solution B; Solution A is mixed with solution B, stirs, and adds Tween-80 and glycerine, and the polishing excess water stirs; The single-phase transparency liquid that is mixed with is present composition microemulsion.
Experimental example 1: first piperazine and uniconazole P synergistic effect in the plant growth regualting composition
1, experimental technique
Reagent agent: uniconazole P (95% former medicine, Jianhu insecticide factory in Jiangsu provides); First piperazine (98% former medicine, chemical plant, Great Wall, Hebei provides).The dissolving of first piperazine water, uniconazole P dissolves with dimethyl formamide, measures in proportion, and existing mixing now used.
Test plant: winter wheat, kind are capital winter No. 6.
Method of testing (indoor wheat bud scale elongation method): full seed soaks sterilization in 15 minutes with saturated liquor natrii hypochloritis, pulls out and rinses well, and sowing suitably adds water in the porcelain dish of shop quartz sand, 25 ℃ of darkroom growths, and humidity remains on about 85%; During 3 days coleoptile 25-35 millimeters, select the seedling of length unanimity, downcut from base portion, 4 millimeters experimentize in the middle of accurately cutting.
The coleoptile segment was immersed earlier in the water 1-2 hour, swim in again in the centrifuge tube that fills the solution of preparing by weight proportion (first piperazine, uniconazole P, first piperazine: uniconazole P is 100: 1,50: 1,25: 1,10: 1,5: 1), every pipe is put 10 sections, and every processing repeats 3 times, is contrast with the redistilled water; The speed rotation of changeing with per minute 16 on circulator is with the bending of avoiding gravitropism to cause; Took out in 24 hours, with vernier caliper measurement coleoptile staple fiber ppd (with reference to old spring chief editor's " pesticide bioassay technology " 1991, publishing house of Beijing Agricultural University).
Calculating the average length of respectively handling the coleoptile segment, is 100% with the segment of contrast coleoptile, calculates the inhibiting rate (%) of each processing to coleoptile segment growth; The synergy computational methods that the analogy insecticide is used with are dependent variable with the inhibiting rate, are independent variable with the logarithm of drug concentration, press the general co-toxicity coefficient method (CTC, Sun Yunpei etc., 1960) of mixed pesticide screening), be that the standard medicament calculates with the uniconazole P.
2, experimental result
First piperazine, uniconazole P and first piperazine: uniconazole P is 100: 1,50: 1,25: 1,10: 1,5: 1 LC that use with
50, co-toxicity coefficient such as table 1.First piperazine and uniconazole P different proportion are used with and are shown certain synergistic effect, when using at 25: 1 both synergy the most obvious, co-toxicity coefficient is 354.45.
Table 1 first piperazine, uniconazole P and the LC that uses with
50And co-toxicity coefficient
| The medicament title | LC50 (mg/L) | Actual measurement toxicity index ATI | Theoretical toxicity index TTI | Co-toxicity coefficient CTC |
| First piperazine uniconazole P first piperazine: 100: 1 first piperazines of uniconazole P: 50: 1 first piperazines of uniconazole P: 25: 1 first piperazines of uniconazole P: 10: 1 first piperazines of uniconazole P: 5: 1 first piperazines of uniconazole P: uniconazole P 1: 1 | 4980 101 2056 1645 500 425 320 280 | 1.00 49.31 2.42 3.03 9.96 11.72 15.56 13.61 | - - 1.42 1.81 2.81 3.95 5.43 4.75 | - - 170.42 167.40 354.45 296.70 286.56 250.74 |
Experimental example 2: the selection of cosolvent and emulsifier in the plant growth regualting composition
1, experimental technique
Select to add in three kinds of cosolvents, the four kinds of emulsifier one or more.
Emulsifier: I: triton x-100, II: Tween 80, III: dodecyl sodium sulfate, IV:OP-21 is market and buys;
Cosolvent: I: ethanol, II: methyl alcohol, III: acetone is market and buys.
Based on the first piperazine in the experimental example 1: the uniconazole P weight ratio is 25: 1 a mixture, (sees Table 2) in proportion and adds assistant agents such as cosolvent, emulsifier, and mixing and stirring promptly gets for the examination microemulsion.
Microemulsion is dispersed to be measured: get the 0.5mL emulsifiable concentrate, from liquid level 1cm place, slowly splash in the 100mL 342mg/L hard water, observe whether the emulsifiable concentrate drop disperses automatically or wire drawing sinks to the bottom, stirred 30 seconds with the speed that per second 2～3 changes with glass rod then, it is qualified that the energy whole milk turns to.
Microemulsion stability is measured: undertaken by GB 1603-79 regulation, measure emulsifiability for 200 times with the dilution of 342mg/L standard hard water, with no oil slick, heavy oily, precipitate that to separate out be qualified stability.
Microemulsion low-temperature stability test: 50mL is put into the 100mL beaker for the examination emulsifiable concentrate, place 0 ± 1 ℃ ice-water bath, and under this temperature, keep 1h, slowly stir with glass bar every now and then therebetween.Inspection has or not decorating film or grease to separate out, and can restore to the original state to qualified after room temperature is separated out or placed to nothing.
The test of microemulsion heat storage stability: 10mL is placed ampoule bottle for the examination emulsifiable concentrate, airtight, make three samples at least at every turn, weigh respectively; Put in 54 ± 2 ℃ of insulating boxs (or water bath with thermostatic control), place 14d.Take out and weigh respectively, the sample that weight does not change in 24h, detects each component content, calculates relative resolution ratio.
2, experimental result
Selected four kinds of cosolvents or mixture all have desirable solubilizing effect, from produce and application safety consideration dimethyl formamide and ethanol compound best, dimethyl formamide and methyl alcohol are compound also can.Emulsifier and consumption selection result see Table 2, and table 3, emulsifier are that 8: 2 mixture is better with triton x-100 and Tween 80, and consumption is advisable with 10%.
Table 2 emulsifier ratio is selected test (emulsifier content 10%)
| The emulsifier kind | Emulsion dispersion | Emulsion stability | The emulsion low-temperature stability |
| Emulsifier I: 8: 2 emulsifier I of emulsifier II: 6: 4 emulsifier I of emulsifier II: 8: 2 emulsifier I of emulsifier IV: 6: 4 emulsifier III of emulsifier IV: 8: 2 emulsifier III of emulsifier II: 6: 4 emulsifier III of emulsifier II: 8: 2 emulsifier III of emulsifier IV: emulsifier IV 6: 4 | Qualified defective defective qualified | Qualified defective | Qualified |
Table 3 emulsifier consumption is selected test
| Emulsifier ratio | Emulsifier consumption (%) | Emulsion dispersion | Emulsion stability | The emulsion low-temperature stability |
| Emulsifier I: 8: 2 emulsifier I of emulsifier II: 6: 4 emulsifier I of emulsifier II: 8: 2 emulsifier I of emulsifier IV: emulsifier IV 6: 4 | 10 8 6 12 10 8 12 10 8 12 10 8 | Qualified defective qualified defective qualified defective | Qualified defective qualified defective qualified defective qualified defective | Qualified qualified |
Experimental example 3: the plant growth regualting composition microemulsion is used effect experiment on wheat
1, experimental technique
Material is a wheat, the kind capital winter No. 8.Composite microemulsion contains effective composition first piperazine 16.7%+ uniconazole P 0.7%, and per hectare restrains with 450, and the phase of standing up adds water and is made into soup for 750 kilograms/hectare, and the blade face evenly sprays.To use first piperazine 16.7%, uniconazole P 0.7% is contrast respectively, and does blank with clear water.13.3 square metres of sub-district areas, 3 repetitions.Investigation plant height during results, each length of internode, dry weight and yield component.Single stem causes the assay method of falling power for hanging pouch at the fringe middle part, adds counterweight and add counterweight gross weight (g) when cane lodges.
2, experimental result
The influence of wheat base portion length of internode dry weight and output sees Table 4, and composite microemulsion can effectively be controlled the elongation of wheat stalk basal internode and increase the unit length dry weight, but does not influence internode under the fringe, and the plant height comparison is shone, list all descends with first piperazine and uniconazole P.These several indexs are common counters of general prosperous length and lodging.
Table 4 plant growth regualting composition microemulsion is to the influence of wheat base portion length of internode dry weight
| Handle | Plant height (cm) | Internode sequence number and length (cm) | Each internode unit length dry weight (g/cm) | ||||||||
| 1 | 2 | 3 | 4 | 5 | 1 | 2 | 3 | 4 | 5 | ||
| The contrast of first piperazine uniconazole P composite microemulsion | 86.1 84.0 80.2 87.0 | 5.2 4.3 4.5 5.5 | 7.8 6.4 6.2 8.5 | 11.6 10.3 10.0 11.6 | 15.8 15.6 15.3 16.0 | 29.0 29.0 28.0 29.2 | 16.06 17.10 16.68 15.98 | 13.10 14.24 14.10 13.05 | 11.46 12.20 12.23 11.50 | 12.00 11.95 12.58 11.90 | 7.55 7.59 7.76 7.57 |
Annotate: 1,2,3,4,5 is the sequence number of up extending internode from base portion in the table
Output in this experiment and lodging tolerance testing result are seen Table 5.The cell production comparison that composite microemulsion is handled respectively improves 11.0% and 9.45% than single with first piperazine and uniconazole P according to improving 10.8%, all reaches significance level.Single stem causes the blank of falling the force rate, list improves 33.7%, 23.0% and 5.7% respectively with first piperazine and uniconazole P.In contrast and single with under all lodging conditions, composite microemulsion is handled does not have lodging.
Table 5 plant growth regualting composition microemulsion is to the influence of wheat yield and lodging
| Medicament | Cell production (kg/m 2) | Single stem causes down power (g) | Lodging ratio (%) |
| First piperazine uniconazole P composite microemulsion | 8.35 8.47 9.27 | 9.0 10.5 11.1 | 25 15 0 |
| Blank | 8.37 | 8.3 | 30 |
Experimental example 4: the field efficacy experiment of plant growth regualting composition microemulsion on soybean
1, experimental technique
Soybean, yellow No. 18 of kind capital, the plant growth regualting composition microemulsion contains effective composition first piperazine 16.7%+ uniconazole P 0.7%, and per hectare restrains with 450, and the branch phase adds water and is made into soup for 750 kilograms/hectare, and the blade face evenly sprays.To use first piperazine 16.7%, uniconazole P 0.7% is contrast respectively, and does blank with clear water.13.3 square metres of sub-district areas, three repetitions.Investigation plant height during results, each length of internode, dry weight and yield component, lodging rate.
2, experimental result
Soybean lodging tolerance and length of internode and unit length of internode dry weight are closely related, and middle and lower part internode shortening, overstriking and circularity height help resistant to lodging.Composite microemulsion handle can delay soybean growing internode and after the elongation of newborn internode, since the 4th internode expression effect, controlled 4-5 internode (seeing Table 6).Composite microemulsion increases with the shortening degree than two kinds of conditioning agent lists.
The testing result that influences to soybean yields in this experiment and lodging tolerance sees Table 7.The sub-district soybean plant height comparison that composite microemulsion is handled is shone, single first piperazine and uniconazole P used all significantly descends, and yield increased improves 25.7%, improves 17.7% and 10.1% than list respectively with first piperazine and uniconazole P, all reaches significance level.Under contrast lodging 60%, single 40%, 45% condition that lodges respectively with first piperazine and uniconazole P, composite microemulsion is handled lodging only 2%.
Table 6 plant growth regualting composition microemulsion is to the influence of soybean length of internode (cm)
| The internode sequence number | Blank | The first piperazine | Uniconazole P | Composite microemulsion |
| 1 2 3 4 5 6 7 8 | 4.00 2.47 2.57 4.10 5.50 5.63 8.67 7.70 | 4.03 2.23 2.43 3.97 5.33 5.63 7.10 7.03 | 3.93 2.50 2.43 3.57 4.97 5.10 6.47 6.90 | 4.43 2.47 2.57 3.40 4.73 5.03 6.33 7.23 |
Table 7 plant growth regualting composition microemulsion is to the influence of soybean plant height and output
| Handle | Plant height (cm) | Output (kg/m 2) | Lodging ratio (%) |
| First piperazine uniconazole P composite microemulsion blank | 53.0 52.4 52.2 54.9 | 158 169 186 148 | 40 45 2 60 |
Experimental example 5: first piperazine and the uniconazole P composite microemulsion field efficacy experiment on peanut
1, experimental technique
Test is carried out at China Agricultural University's research park, and experimental cultivar is that spend No. 11 the Shandong.The plant growth regualting composition microemulsion contains effective composition first piperazine 16.7%+ uniconazole P 0.7%, and per hectare adds water and is made into soup for 750 kilograms/hectare with 450 grams, and the initial bloom stage blade face evenly sprays.To use first piperazine 16.7%, uniconazole P 0.7% is contrast respectively, and does blank with clear water.20 square metres of sub-district areas, three repetitions.Investigation plant height, branch amount, yield component and output, lodging rate during results.
2, experimental result
As shown in table 8, composite microemulsion is handled, and has the composition list high and the side stem is long with significantly reducing the peanut stem than blank and two kinds.Pod output and seed benevolence output all significantly improve.Under contrast lodging 55% situation, first piperazine and uniconazole P list are respectively 16%, 20% with lodging, the not lodging that composite microemulsion is handled.
Table 8 plant growth regualting composition microemulsion is to peanut plant height, output and lodging rate influence
| Handle | Stem height (cm) | Side stem long (cm) | Pod output (kg/m 2) | Seed benevolence output (kg/m 2) | Lodging ratio (%) |
| First piperazine uniconazole P composite microemulsion blank | 43.0 42.6 40.1 43.5 | 43.4 43.6 41.2 44.6 | 3.70 3.78 4.18 3.72 | 2.55 2.61 2.88 2.57 | 16 20 0 55 |
Experimental example 6: the field efficacy experiment of plant growth regualting composition microemulsion on paddy rice
1, experimental technique
Near field experiment happiness village in Shang Zhuan township China Agricultural University experimental field carries out, and is paddy field for many years.For the rice varieties that tries the water is 305 and upland rice No. 9.The plant growth regualting composition microemulsion contains effective composition first piperazine 16.7%+ uniconazole P 0.7%, and per hectare adds water and is made into soup for 750 kilograms/hectare with 750 grams, and flowering stage, the blade face evenly sprayed.Respectively with first piperazine with 750 gram/hectares 16.7%,, 0.7% uniconazole P is contrast, and does blank with clear water.Line-spacing is 30 centimetres, 35 square metres of sub-district areas, 3 repetitions.Sampling survey before results, plant height, length of internode, output and yield component are investigated in every 20 strains at random.
2, experimental result
From table 9 data as can be seen, the rice anthesis list does not make significant difference to the paddy rice plant height with first piperazine, uniconazole P, and appliable plant growth regulating composition microemulsion is handled significantly reduction plant height, reduce by 14.0% than blank, first piperazine, uniconazole P respectively, 12.6% and 11.9%, all reach significance level.Composite microemulsion is handled basal internode length is suppressed strong than the top internode, and under contrast lodging 60% condition, composite microemulsion is handled and only lodged 3%, shows that lodging tolerance significantly strengthens.From output, list is more not remarkable than blank difference with first piperazine, uniconazole P, and composite microemulsion is handled than blank volume increase 9.03%.
Table 9 plant growth regualting composition microemulsion is to the influence of paddy rice plant height, length of internode and output
| Handle | Plant height (cm) | Internode sequence number and length (centimetre) | Output (kg/667m 2) | Lodging ratio (%) | ||||
| 1 | 2 | 3 | 4 | 5 | ||||
| First piperazine uniconazole P composite microemulsion | 94.0 93.2 82.1 | 5.2 5.0 2.5 | 13.1 12.8 9.7 | 17.0 16.8 14.7 | 19.2 18.6 18.7 | 23.0 22.8 21.3 | 414.58 420.53 477.61 | 55 50 3 |
| Contrast | 95.5 | 5.2 | 13.0 | 17.3 | 19.6 | 23.0 | 438.05 | 60 |
Claims (5)
1. a microemulsion is characterized in that, the percentage by weight of each component is:
First piperazine 1%-60%
Uniconazole P 0.1%-50%
Cosolvent 1%-50%
Emulsifier 1%-30%
Stabilizing agent 1%-30%
Water surplus,
The weight ratio of active ingredient first piperazine and uniconazole P is 0.2～100: 1, described cosolvent is selected from one or more in dimethyl formamide, methyl alcohol, ethanol, the acetone, and described emulsifier is selected from one or more in triton x-100, OP-10, OP-21, dodecyl sodium sulfate, the Tween 80.
2. according to the described microemulsion of claim 1, it is characterized in that the weight ratio of active ingredient first piperazine and uniconazole P is 25: 1.
3. according to claim 1 or 2 described microemulsions, it is characterized in that stabilizing agent is selected from one or more in n-butanol, propyl alcohol, the glycerine.
4. method for preparing arbitrary described microemulsion of claim 1-3, it comprises the steps:
(1) dissolves uniconazole P fully with cosolvent, stir, make solution A;
(2) weight water such as use to dissolve the first piperazine fully, make solution B;
(3) merge solution A and B, stir;
(4) add emulsifier, stabilizing agent, the polishing excess water stirs.
5. the purposes of the described microemulsion of claim 1-3 is characterized in that, microemulsion is applied on wheat, soybean, peanut, paddy rice, the upland rice, and to regulate growth, the elongation of control stipes prevents prosperous length and lodging, increases output.
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| CN1296745A (en) * | 1999-11-19 | 2001-05-30 | 吴仲芳 | Fungicidal plant growth regulator of wheat for preventing and treating diseases, promoting robust and resisting flattening |
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| CN1230340A (en) * | 1999-03-16 | 1999-10-06 | 新疆农业科学院微生物应用研究所 | Synergistic mepiquat chloride and its production |
| CN1296745A (en) * | 1999-11-19 | 2001-05-30 | 吴仲芳 | Fungicidal plant growth regulator of wheat for preventing and treating diseases, promoting robust and resisting flattening |
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