CN102696612A - Herbicidal compound containing 2,4-D and picloram, as well as preparation method and application thereof - Google Patents
Herbicidal compound containing 2,4-D and picloram, as well as preparation method and application thereof Download PDFInfo
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Abstract
The invention discloses a herbicidal compound containing 2,4-D and picloram, which comprises raw medicines and an auxiliary material, wherein the raw medicines include the 2,4-D and the picloram. The invention further comprises a preparation method and an application of the herbicidal compound. The herbicidal compound can be used for preventing and curing weeds in wheat field and corn field, has a wide weeding spectrum, remarkably improves drug effect, lowers use quantity, saves economic cost, greatly reduces the use quantity of each type of active material, particularly reduces the use quantity of the picloram so as to decrease the residual herbicidal compound in the environment, and has important bionomics and environment protection significance.
Description
Technical field
This relates to and a kind ofly contains 2, and 4-drips with the Herbicidal combinations of picloram and its production and application, belongs to technical field of pesticide.
Background technology
Along with further developing of weed killer herbicide production and application, using with gradually between the weed killer herbicide grows up.China also comparatively payes attention to using with aspect the research of weed killer herbicide, is recognized extensively that to do be one of important measures of rationally using of weed killer herbicide, has worked out a series of Herbicidal compositions, has obtained bigger progress.
2,4-drip (2,4-D), molecular formula: C
8H
6Cl
2O
3, chemical name: 2,4 dichloro benzene ethoxyacetic acid.2,4-drips for inhaling conduction hormonal weed killer herbicide in the phenoxy carboxylic acid selectivity, has stronger interior suction conductivity, when low concentration, can suppress growth and development of plants; Causing deformity appears, up to death, be mainly used in seedling after cauline leaf handle, the synthetic generation Different Effects to nucleic acid and protein stops growing growing point; Not tensible of young leaflet tablet suppresses photosynthetic and normally carries out, and is transmitted to the medicament of plant bottom, promotes abnormal cell division; The tip of a root expands, and the forfeiture absorbing capacity causes the distortion of stem stalk, deformity, and screen casing stops up; Phloem destroys, and the organic matter transportation is obstructed, and causes plant dead.Be used to prevent and kill off weeds in field such as wheat, better to weeds preventive effects such as wheat wormwood artemisia, shepherd's purse, wartwort, rice crocks, and relatively poor to the preventive effect of clearvers, chickweed.
Picloram (florasulam), molecular formula: C
6H
3Cl
3N
2O
2, chemical name: 4-amino-3,5,6-trichloropyridine carboxylic acid.Mainly act on the accounting metabolism, and make chloroplast structure and other cell developments deformity, interferencing protein is synthetic, acts on meristematic tissue activity etc., causes plant dead at last.Be mainly used in cornfield herbicidal; To the control efficiency of shepherd's purse relatively poor outside, effectively prevent and kill off the most of weeds of wheatland, but the picloram dosing is more relatively; During crop rotation; Consider of the influence of residual picloram, therefore, receive certain limitation in the use broad leaf crop (beans, vegetables, cotton, tobacco etc.).
The wheat paddock weed killer herbicide is limit by crop safety at present; It is also limited to kill the grass spectrum; Use a kind of weed killer herbicide can not control the generation of wheat paddock weeds completely effectively separately, moreover some weed killer herbicide is because the excessive residual hazard that causes easily this season crop or succession crop of consumption.Therefore, research weed killer herbicide mixture has very important ecological significance and environment protection significance.
Summary of the invention
To the existing deficiency of existing single medicine composition weed killer herbicide; The invention provides and a kind ofly contain 2,4-drips the Herbicidal combinations with picloram, and said composition has enlarged herbicidal spectrum; Improved herbicidal effect; Reduce dosage, reduced medicament residue, had important ecological significance and environment protection significance.
The present invention also provides the preparation method of this Herbicidal combinations, and this method is simple to operate, and is easy to implement, products obtained therefrom stability and practical, easy to use.
The present invention also provides the application of this Herbicidal combinations.
The present invention realizes through following technical scheme:
A kind ofly contain 2,4-drips the Herbicidal combinations with picloram, it is characterized in that: comprise bulk drug and auxiliary material, said bulk drug is 2, and 4-drips and picloram.
Better, preferred 2 for the herbicidal effect that makes resulting composition, the mass ratio that 4-drips with picloram is 1～4:1.
In the Herbicidal combinations of the present invention, the content of bulk drug is generally 5～60wt%, is preferably 40wt%, and all the other are auxiliary material.
Herbicidal combinations of the present invention can (be a water-soluble granule for aqua or water-soluble granular formulation; Down together), the auxiliary material that comprises in the aqua and each auxiliary material content (is 1 in the aqua gross mass) are: cosolvent 1～10%, synergist 1～10%; Water-based stabilizing agent 0.1～2%; Antifreezing agent 1～10%, antifoaming agent 0.01～0.1%, water surplus; Preferred content is: cosolvent 4～7%, synergist 3～7%, water-based stabilizing agent 0.4～1%, antifreezing agent 4～7%, antifoaming agent 0.02～0.05%, water surplus.
In the aqua, said cosolvent is isopropylamine, monomethyl amine, dimethylamine, trimethylamine, ammoniacal liquor, sodium hydroxide, potassium hydroxide or triisopropanolamine, preferred triisopropanolamine; Said synergist is one or more in AEO, aliphatic amine polyoxyethylene ether and the APES, preferred fat alcohol APEO; Said water-based stabilizing agent is one or more in casein sodium, ethylenediamine tetra-acetic acid and the disodium ethylene diamine tetraacetate, preferred ethylenediamine tetra-acetic acid; Said antifreezing agent is one or more in ethylene glycol, propane diols, glycerine, polyethylene glycol, methyl alcohol, ethanol and the N-Methyl pyrrolidone, preferred N-Methyl pyrrolidone; Said antifoaming agent is one or more in silicone, C8 ~ C 10 aliphatic alcohols, Cl0 ~ C20 saturated fat acids (like capric acid), Cl0 ~ 20 saturated fat amide-types and the silicone oil, preferred silicone.
The auxiliary material that comprises in the water-soluble granular formulation and each auxiliary material content (is 1 in the aqua gross mass) are: cosolvent 1～10%, surfactant 1 ~ 10%, binding agent 1 ~ 10%, water-soluble stabilizing agent 1 ~ 5%, water-soluble inorganic salt surplus; Preferred content is: cosolvent 3～6%, surfactant 5～7%, binding agent 3～5%, water-soluble stabilizing agent 2～3%, water-soluble inorganic salt surplus.
In the water-soluble granular formulation, said cosolvent is isopropylamine, monomethyl amine, dimethylamine, trimethylamine, ammoniacal liquor, sodium hydroxide, potassium hydroxide or triisopropanolamine, preferred dimethylamine; Said surfactant is one or more in alkyl amide taurate, polyoxyethylene fatty acid ester, polyoxyethylene aliphatic alcohol ether, polyoxyethylene fatty amine, ethoxy castor oil, fatty acid polyethylene glycol ester, APES, polyoxyethylene poly-oxygen propylene aether, aliphatic amine polyoxyethylene ether and the polyoxyethylene polyoxypropylene carboxylate, the preferred alkyl phenol polyethenoxy ether; Said binding agent is one or more in urea, carbohydrate, polyvinylpyrrolidone, polyethylene glycol, polyvinyl alcohol, soluble starch, dextrin and the sodium carboxymethylcellulose, soluble starch; Said water-soluble stabilizing agent is one or more in ethylenediamine tetra-acetic acid, disodium ethylene diamine tetraacetate, tetrasodium ethylenediamine tetraacetate, sodium phosphate trimer and the citric acid, preferred sodium phosphate trimer; Said water-soluble inorganic salt be in sulphate, nitrate, hydrochloride, carbonate, bicarbonate, phosphate, phosphoric acid hydrogen disalt, dihydric phosphate, borate and the silicate one or more; Requirement according to required water-soluble granule; Water-soluble inorganic salt can be water-soluble sodium salt, sylvite, ammonium salt, preferred sodium chloride.
The present invention contains 2; The preparation method that 4-drips with the Herbicidal combinations aqua of picloram may further comprise the steps: with 2,4-drips with picloram and mixes, and adds cosolvent and water-based stabilizing agent; React 1～3h down at 50～90 ℃; Be cooled to 30～50 ℃ after having reacted, add synergist, antifreezing agent, antifoaming agent and water, promptly get aqua.
Among the above-mentioned aqua preparation method, 2,4-drips, picloram, cosolvent and water-based stabilizing agent preferably react as medium with water.
The present invention contains 2; The preparation method that 4-drips with the Herbicidal combinations water-soluble granular formulation of picloram may further comprise the steps: with 2,4-drips with picloram and mixes, and adds cosolvent; React 1～3h down at 50～90 ℃; React back adding surfactant, binding agent, water-soluble stabilizing agent and water-soluble inorganic salt and mediated, mediated finish directly granulation of back, oven dry, promptly got water-soluble granular formulation.
Among the above-mentioned water-soluble granular formulation preparation method, 2,4-drips, picloram, cosolvent preferably react as medium with water.In addition, the kneading time is 0.5～3h, and bake out temperature is 40～90 ℃.
The present invention contains 2, and the Herbicidal combinations that 4-drips with picloram can be used for preventing and treating the weeds in wheatland and the corn field, and is especially generally better to the control efficiency of using weeds such as the relatively poor chickweed of other weed killer herbicide control efficiency, clearvers.
The method for using of this Herbicidal combinations is: when being used for wheat paddock; Carry out the spray pesticide weeding in wheat period of seedling establishment, weeds many places in 4～6 leaf phases; The per hectare farmland restrains Herbicidal combinations with 100-120, and every 100g Herbicidal combinations carries out conventional cauline leaf spray pesticide after diluting with 600 premium on currency.When being used for corn field, carry out the spray pesticide weeding in the corn 4-10 leaf phase, the per hectare farmland restrains Herbicidal combinations with 120-140, and every 100g Herbicidal combinations carries out conventional cauline leaf spray pesticide after diluting with 600 premium on currency.
Herbicidal combinations of the present invention compared with prior art produces following beneficial effect:
The present invention select to kill the grass spectrum different 2,4-drips to make up with picloram and is mixed, and makes their pluses and minuses complementary; Simultaneously also play collaborative effect, resulting composition has enlarged the herbicidal spectrum of single medicine, has obviously improved drug effect; Reduce dosage, practiced thrift Financial cost, significantly reduced the application dosage of every kind of active substance; Especially the consumption that reduces picloram can significantly reduce medicament residual in environment, has important ecological significance and environment protection significance.
Embodiment
Below in conjunction with specific embodiment the present invention is described further, should be understood that, following explanation only is in order to explain the present invention, its content not to be limited.
Among the following embodiment, if no special instructions, used stabilizing agent is the water-based stabilizing agent in the aqua, and used stabilizing agent is water-soluble stabilizing agent in the water-soluble granule (being water-soluble granular formulation).
Embodiment 160%2,4-drips picloram triisopropanolamine salt aqua
2,4-drips 48%, in the picloram 12%, triisopropanolamine 10%, stabilizing agent disodium ethylene diamine tetraacetate 2.0%, part deionized water agitated reactor, stir the 85 ℃ of insulation 1.5h that heat up; After being cooled to 50 ℃, add synergist AEO 10.0%, antifreezing agent butanols 10.0%; Silicone antifoaming agent 0.1%; Add ionized water to 100%, make 60%2,4-drips picloram triisopropanolamine salt aqua.
Embodiment 230%2,4-drips picloram triisopropanolamine salt aqua
2,4-drips 21%, picloram 9%, triisopropanolamine 8%, stabilizing agent ethylenediamine tetra-acetic acid 1.1%, in disodium ethylene diamine tetraacetate 0.7 %, the part deionized water agitated reactor; The 60 ℃ of insulation 1.2h that stir to heat up, be cooled to 43 ℃ after, add synergist AEO 7.0%; Antifreeze glycol 5.0%, polyethylene glycol 3.0%, silicon oil foam killer 0.02%; Add ionized water to 100%, make 30%2,4-drips picloram triisopropanolamine salt aqua.
Embodiment 340%2,4-drips picloram triisopropanolamine salt aqua
2,4-drips 30%, picloram 10%, triisopropanolamine 9%, stabilizing agent ethylenediamine tetra-acetic acid 0.6%; In casein sodium 0.2%, the part deionized water agitated reactor, the 75 ℃ of insulation 2.1h that stir to heat up, be cooled to 45 ℃ after; Add synergist APES 5.0%, antifreezing agent N-Methyl pyrrolidone 4.9%, C8 ~ C10 aliphatic alcohols antifoaming agent 0.08%; Add ionized water to 100%, make 40%2,4-drips picloram triisopropanolamine salt aqua.
Embodiment 410%2, a 4 ~ picloram triisopropanolamine salt aqua
2,4-drips 7.5%, in the picloram 2.5%, triisopropanolamine 7%, stabilizing agent disodium ethylene diamine tetraacetate 0.1%, part deionized water agitated reactor, stir the 90 ℃ of insulation 1.0h that heat up; After being cooled to 50 ℃, add synergist aliphatic alcohol polyethenoxy 1.0%, antifreezing agent N-Methyl pyrrolidone 4.0%; Silicon oil foam killer 0.03%; Add ionized water to 100%, make 10%2,4-drips picloram triisopropanolamine salt aqua.
Embodiment 525%2,4-drips picloram dimethylamine salt aqua
2,4-drips 18%, picloram 7%, dimethylamine 6%, stabilizing agent casein sodium 1.3%, in the part deionized water agitated reactor; The 70 ℃ of insulation 2.5h that stir to heat up, be cooled to 40 ℃ after, add synergist AEO 5.0%; Antifreezing agent ethanol 2.0%, ethylene glycol 4.0%, silicone antifoaming agent 0.07%; Add ionized water to 100%, make 25%2,4-drips picloram dimethylamine salt aqua.
Embodiment 640%2,4-drips picloram dimethylamine salt aqua
2,4-drips 25%, in the picloram 15%, dimethylamine 4%, stabilizing agent disodium ethylene diamine tetraacetate 1.5%, part deionized water agitated reactor, stir the 65 ℃ of insulation 3.0h that heat up; After being cooled to 40 ℃, add synergist aliphatic amine polyoxyethylene ether 6.0%, antifreezing agent N-Methyl pyrrolidone 7.0%; Silicone antifoaming agent 0.05%; Add ionized water to 100%, make 40%2,4-drips picloram dimethylamine salt aqua.
Embodiment 715%2,4-drips picloram dimethylamine salt aqua
2,4-drips 10%, picloram 5%, dimethylamine 2%, stabilizing agent ethylenediamine tetra-acetic acid 0.3%, in disodium ethylene diamine tetraacetate 0.4%, the part deionized water agitated reactor; The 52 ℃ of insulation 1.8h that stir to heat up, be cooled to 32 ℃ after, add synergist APES 6.0%; Antifreezing agent N-Methyl pyrrolidone 3.0%, C8 ~ C10 aliphatic alcohols antifoaming agent 0.04% adds ionized water to 100%; Make 15%2,4-drips picloram dimethylamine salt aqua.
Embodiment 85%2,4-drips picloram monomethyl amine salt aqua
2,4-drips 3%, in the picloram 2%, monomethyl amine 1%, stabilizing agent ethylenediamine tetra-acetic acid 0.3% part deionized water agitated reactor, stir the 55 ℃ of insulation 2.0h that heat up; After being cooled to 35 ℃, add synergist aliphatic amine polyoxyethylene ether 1.5%, antifreezing agent propane diols 2.0%; Cl0 ~ C20 saturated fat acids (like capric acid) and acid amides antifoaming agent 0.01%; Add ionized water to 100%, make 5%2, a 4 ~ picloram monomethyl amine salt aqua.
Embodiment 920%2,4-drips picloram trimethylamine salt aqua
2,4-drips 10%, in the picloram 10%, trimethylamine 3%, stabilizing agent casein sodium 1.2%, part deionized water agitated reactor, stir the 53 ℃ of insulation 2.7h that heat up; After being cooled to 30 ℃, add synergist aliphatic alcohol polyethenoxy 2.3%, aliphatic amine polyoxyethylene ether 1.1%; Antifreezing agent polyethylene glycol 1.0%, silicone compound antifoaming agent 0.06% is added ionized water to 100%; Make 20%2,4-drips picloram trimethylamine salt aqua.
Embodiment 1050%2,4-drips picloram isopropyl amine salt aqua
2,4-drips 38%, picloram 12%, isopropylamine 5%, stabilizing agent ethylenediamine tetra-acetic acid 1.0%, part deionized water to agitated reactor, stir the 50 ℃ of insulation 2.5h that heat up; After being cooled to 41 ℃, add synergist AEO 3.5%, APES 5.0%; Antifreezing agent glycerine 3.0%, propane diols 6.0%, silicone antifoaming agent 0.09%; Add ionized water to 100%, make 50%2,4-drips picloram isopropyl amine salt aqua.
Embodiment 1140%2,4-drips the water-soluble granula of picloram triisopropanolamine salt
2,4-drips 30%, picloram 10%, triisopropanolamine 5.0%; In kneader, fully react 1.5h, add surfactant APES 6.0%, APES 3.0%, binding agent sodium carboxymethylcellulose 4.0%; Stabilizing agent tetrasodium ethylenediamine tetraacetate 1.0%, ethylenediamine tetra-acetic acid 2.0%, ammonium sulfate is mended to 100%, mediates; Mediate the direct granulation of 2.8h, oven dry promptly obtains 40%2 under 60 ℃ of conditions, and 4-drips the water-soluble granula water-soluble granule of picloram triisopropanolamine salt.
Embodiment 125%2,4-drips picloram sylvite water-soluble granule
2,4-drips 3%, picloram 2%, potassium hydroxide 2.0%; In kneader, fully react 1.0h, add surfactant alkyl amide taurate 1.0%, binding agent soluble starch 6.0%; Stabilizing agent sodium phosphate trimer 1.5%, ammonium chloride is mended to 100%, mediates; Mediate the direct granulation of 0.5h, oven dry promptly obtains 5%2 under 90 ℃ of conditions, and 4-drips picloram sylvite water-soluble granule.
Embodiment 1360%2,4-drips picloram sylvite water-soluble granule
2,4-drips 30%, picloram 30%, potassium hydroxide 10.0%; In kneader, fully react 2.8h, add surfactant APES 6.0%, polyoxyethylene poly-oxygen propylene aether 4.0%, binding agent polyethylene glycol 7.7%; Stabilizing agent disodium ethylene diamine tetraacetate 5.0%, ammonium dihydrogen phosphate (ADP) is mended to 100%, mediates; Mediate the direct granulation of 2.5h, oven dry promptly obtains 60%2 under 40 ℃ of conditions, and 4-drips picloram sylvite water-soluble granule.
Embodiment 1425%2,4-drips picloram sodium salt water-soluble granule
2,4-drips 19%, picloram 6%, sodium hydroxide 3.3%; In kneader, fully react 1.3h, surfactant polyoxyethylene polyethenoxy ether 7.0%, binding agent dextrin 7.0%, polyvinylpyrrolidone 2.0%; Stabilizing agent disodium ethylene diamine tetraacetate 3.5%, sodium chloride is mended to 100%, mediates; Mediate the direct granulation of 1.0h, oven dry promptly obtains 25%2 under 50 ℃ of conditions, and 4-drips picloram sodium salt water-soluble granule.
Embodiment 1540%2,4-drips picloram dimethylamine water-soluble granule
2,4-drips 25%, picloram 15%, dimethylamine 4.0%; In kneader, fully react 1.8h, surfactant polyoxyethylene fatty acid ester 4.0%, APES 3.0%, binding agent dextrin 4.0%; Polyethylene glycol 1.0%, stabilizing agent ethylenediamine tetra-acetic acid 4.5%, potassium phosphate is mended to 100%, mediates; Mediated the direct granulation of 3.0h, oven dry promptly obtains 40%2 under 70 ℃ of conditions, and 4-drips picloram dimethylamine water-soluble granule.
Embodiment 1630%2,4-drips the water-soluble granula of picloram monomethyl amine salt
2,4-drips 20%, picloram 10%, monomethyl amine 7.0%; In kneader, fully react 2.5h, surfactant polyoxyethylene polyethenoxy ether 4.0%, binding agent polyvinyl alcohol 1.0%; Stabilizing agent ethylenediamine tetra-acetic acid 1.8%, ammonium nitrate is mended to 100%, mediates; Mediate the direct granulation of 2.0h, oven dry promptly obtains 30%2 under 80 ℃ of conditions, and 4-drips the water-soluble granula of picloram monomethyl amine salt.
Embodiment 1712%2,4-drips picloram isopropyl amine salt water-soluble granule
2,4-drips 7%, picloram 5%, isopropylamine 1.0%; In kneader, fully react 2.2h, surfactant polyoxyethylene fatty alcohol ether 3.0, APES 2.0%, binding agent sodium carboxymethylcellulose 3.0%; Stabilizing agent disodium ethylene diamine tetraacetate 1.0%, the anhydrous slufuric acid ammonium is mended to 100%, mediates; Mediate the direct granulation of 1.8h, oven dry promptly obtains 12%2 under 85 ℃ of conditions, and 4-drips picloram isopropyl amine salt water-soluble granule.
Embodiment 1818%2,4-drips the water-soluble granula of picloram trimethylamine salt
2,4-drips 13%, picloram 5%, trimethylamine 6.0%; In kneader, fully react 2.0h, surfactant APES 2.0%, binding agent sodium carboxymethylcellulose 2.0%; Stabilizing agent ethylenediamine tetra-acetic acid 2.2%, ammonium phosphate is mended to 100%, mediates; Mediate the direct granulation of 2.2h, oven dry promptly obtains 18%2, a 4 ~ water-soluble granula of picloram trimethylamine salt under 45 ℃ of conditions.
Embodiment 1950%2,4-drips the picloram ammonium salt water soluble granule preparation
2,4-drips 40%, picloram 10%, ammoniacal liquor 9.0%; In kneader, fully react 3.0h, surfactant polyoxyethylene fatty acid ester 8.0%, binding agent polyvinylpyrrolidone 5.0%, soluble starch 5.0%; Stabilizing agent sodium phosphate trimer 4.0%, ammonium chloride is mended to 100%, mediates; Mediate the direct granulation of 1.5h, oven dry promptly obtains 50%2 under 65 ℃ of conditions, and 4-drips the picloram ammonium salt water soluble granule preparation.
Embodiment 2060%2,4-drips picloram triisopropanolamine salt aqua
2,4-drips 5%, in the picloram 55%, triisopropanolamine 10.0%, stabilizing agent ethylenediamine tetra-acetic acid 2 2.0%, part deionized water agitated reactor, stir the 85 ℃ of insulation 1.5h that heat up; After being cooled to 50 ℃, add synergist AEO 9.0%, antifreezing agent butanols 8.0%; Silicone antifoaming agent 0.07%; Add ionized water to 100%, make 60%2,4-drips picloram triisopropanolamine salt aqua.
Herbicidal combinations ratio of the present invention is single with 2; 4-drips or picloram has better effect, and it can be used for the control of wheatland, corn field weed, and effect is remarkable; Be example with the medicament of embodiment 1, embodiment 9, embodiment 11, embodiment 12, embodiment 20 respectively below; With variable concentrations 2,4-drips salt dimethylamine salt water-soluble granule and picloram triisopropanolamine salt aqua is contrast, and beneficial effect of the present invention is described simultaneously.
One, wheat paddock control of weeds effect research
1, experimentize in the local wheat planting stage, select 14 plots of wheat paddocks to experimentize, main weeds is in the wheat paddock: wheat wormwood artemisia, shepherd's purse, wartwort, rice crock, clearvers, chickweed; Application method is: carry out the spray pesticide weeding at the wheat period of seedling establishment, and thin up during herbal sprinkling, dispenser weather on the same day is fine; Dispenser during 9-11 in the morning; Dispenser is 1 time altogether, 25 ℃ of the maximum air temperatures, 15 ℃ of the minimum air temperatures.
2, every plot of wheat paddock stated according to following form 1 respectively made medicament:
3, result
3.1 above-mentioned 14 groups of medicine herbicidal effects such as following table 2 and table 3.
3.2 the medicine to all the other embodiment also experimentizes according to top method, formulation rate is the 100-120g/ hectare, and the result shows; 2,4-drip with the mass ratio of picloram when optimal proportion scope 1～4:1, to the herbicidal effects of all weeds all more than 90%; 2,4-drips mass ratio with picloram outside the optimal proportion scope time, and gained Herbicidal combinations effect descends to some extent; Between 80-90%, and along with the big more effect of gap of both consumptions is poor more.
4, sum up
2; It is that main wheat weeds preventive effect is better to wheat wormwood artemisia, shepherd's purse, wartwort, rice crock etc. that 4-drips salt dimethylamine salt water-soluble granule; The strain preventive effect can reach more than 80%; But dosing is more, and to being that master's wheat weeds preventive effect is relatively poor with clearvers and chickweed etc., the strain preventive effect that has does not also reach 50%; 60% picloram triisopropanolamine salt aqua is harmful to most of weeds except that shepherd's purse, and control efficiency is generally better, but dosing is also more, and during crop rotation, residual picloram can be influential to broad leaf crop (beans, vegetables, cotton, tobacco etc.).And the present invention 2, it is generally better to wheat paddock weeds preventive effect that 4-drips salt picloram Herbicidal combinations, and; Than using separately 72% 2; 4-drips salt dimethylamine salt water-soluble granule, and 60% picloram triisopropanolamine salt aqua is compared has the wider careless spectrum of killing, better control of weed in wheat field.Can find out that from the data of table 2 and table 3 pharmaceutical composition of the present invention just can reach herbicidal effect preferably under 100-120g/ hectare formulation rate of the present invention, formulation rate is lower than 100g; Herbicidal effect is poor; Formulation rate is higher than the 120g/ hectare, and herbicidal effect increases limited, is unfavorable for the reduction of cost.In addition, data also show, Herbicidal combinations of the present invention is 2,4-drip mass ratio with picloram when being 1～4:1 herbicidal effect best, the Herbicidal combinations effect that exceeds this scope decreases, between 80-90% (for example shown in the embodiment 20).This shows that the present invention 2, the combination that 4-drips with picloram has improved herbicidal effect, has reduced the usage amount of medicine, and medicine residence time in soil is short, and no accumulation toxicity is to plant growth safety.
Two, corn field weed control efficiency research
1, experimentize in the local corn planting stage, select 14 corn fields to experimentize, main weeds is in the corn field: lady's-grass, green foxtail, eleusine indica, barnyard grass grass, kitchen garden, Amaranthus retroflexus, acalypha copperleaf; Application method is: carry out the spray pesticide weeding in the corn 4-10 leaf phase, and thin up during herbal sprinkling, dispenser weather on the same day is fine; Dispenser during 9-11 in the morning; Dispenser is 1 time altogether, 30 ℃ of the maximum air temperatures, 15 ℃ of the minimum air temperatures.
2, with every corn field respectively according to the following form 4 said medicament that make:
3, result
3.1 above-mentioned 14 groups of medicine herbicidal effects such as following table 5 and table 6.
3.2 the medicine to all the other embodiment also experimentizes according to top method, formulation rate is the 130g/ hectare, and the result shows; 2,4-drip with the mass ratio of picloram when optimal proportion scope 1～4:1, to the herbicidal effects of all weeds all more than 90%; 2,4-drips mass ratio with picloram outside the optimal proportion scope time, and gained Herbicidal combinations effect descends to some extent; Between 80-90%, and along with the big more effect of gap of both consumptions is poor more.
4, sum up
Can find out that from above data the present invention 2, the combination that 4-drips with picloram has improved the corn field weed control efficiency, has reduced the usage amount of medicine, and is economical and practical, and medicine residence time in soil is short, and no accumulation toxicity is to plant growth safety.
Claims (10)
1. one kind contains 2, and 4-drips the Herbicidal combinations with picloram, it is characterized in that: comprise bulk drug and auxiliary material, said bulk drug is 2, and 4-drips and picloram.
2. Herbicidal combinations according to claim 1 is characterized in that: 2, and the mass ratio that 4-drips with picloram is 1～4:1.
3. Herbicidal combinations according to claim 1 is characterized in that: the content of bulk drug is 5～60wt%, and all the other are auxiliary material.
4. Herbicidal combinations according to claim 3 is characterized in that: the content of bulk drug is 40wt%, and all the other are auxiliary material.
5. Herbicidal combinations according to claim 1; It is characterized in that: formulation is aqua or water-soluble granular formulation, and the auxiliary material that comprises in the aqua and each auxiliary material content are: cosolvent 1～10%, synergist 1～10%; Water-based stabilizing agent 0.1～2%; Antifreezing agent 1～10%, antifoaming agent 0.01～0.1%, water surplus; The auxiliary material that comprises in the water-soluble granular formulation and each auxiliary material content are: cosolvent 1～10%, surfactant 1 ~ 10%, binding agent 1 ~ 10%, water-soluble stabilizing agent 1 ~ 5%, water-soluble inorganic salt surplus.
6. Herbicidal combinations according to claim 5 is characterized in that: the auxiliary material that comprises in the aqua and each auxiliary material content are: cosolvent 4～7%, synergist 3～7%, water-based stabilizing agent 0.4～1%, antifreezing agent 4～7%, antifoaming agent 0.02～0.05%, water surplus; The auxiliary material that comprises in the water-soluble granular formulation and each auxiliary material content are: cosolvent 3～6%, surfactant 5～7%, binding agent 3～5%, water-soluble stabilizing agent 2～3%, water-soluble inorganic salt surplus.
7. Herbicidal combinations according to claim 5 is characterized in that: in the aqua, said cosolvent is isopropylamine, monomethyl amine, dimethylamine, trimethylamine, ammoniacal liquor, sodium hydroxide, potassium hydroxide or triisopropanolamine; Said synergist is one or more in AEO, aliphatic amine polyoxyethylene ether and the APES; Said water-based stabilizing agent is one or more in casein sodium, ethylenediamine tetra-acetic acid and the disodium ethylene diamine tetraacetate; Said antifreezing agent is one or more in ethylene glycol, propane diols, glycerine, polyethylene glycol, methyl alcohol, ethanol and the N-Methyl pyrrolidone; Said antifoaming agent is one or more in silicone, C8 ~ C10 aliphatic alcohols, Cl0 ~ C 20 saturated fat acids, Cl0 ~ C20 saturated fat amide-type and the silicone oil;
In the water-soluble granular formulation, said cosolvent is isopropylamine, monomethyl amine, dimethylamine, trimethylamine, ammoniacal liquor, sodium hydroxide, potassium hydroxide or triisopropanolamine; Said surfactant is one or more in alkyl amide taurate, polyoxyethylene fatty acid ester, polyoxyethylene aliphatic alcohol ether, polyoxyethylene fatty amine, ethoxy castor oil, fatty acid polyethylene glycol ester, APES, polyoxyethylene poly-oxygen propylene aether, aliphatic amine polyoxyethylene ether and the polyoxyethylene polyoxypropylene carboxylate; Said binding agent is one or more in urea, carbohydrate, polyvinylpyrrolidone, polyethylene glycol, polyvinyl alcohol, soluble starch, dextrin and the sodium carboxymethylcellulose; Said water-soluble stabilizing agent is one or more in ethylenediamine tetra-acetic acid, disodium ethylene diamine tetraacetate, tetrasodium ethylenediamine tetraacetate, sodium phosphate trimer and the citric acid; Said water-soluble inorganic salt be in sulphate, nitrate, hydrochloride, carbonate, bicarbonate, phosphate, phosphoric acid hydrogen disalt, dihydric phosphate, borate and the silicate one or more.
8. Herbicidal combinations according to claim 7 is characterized in that: in the aqua, said cosolvent is a triisopropanolamine; Said synergist is an AEO; Said water-based stabilizing agent is an ethylenediamine tetra-acetic acid, and said antifreezing agent is a N-Methyl pyrrolidone, and said antifoaming agent is a silicone; In the water-soluble granular formulation, said cosolvent is a dimethylamine, and said surfactant is an APES, and said binding agent is a soluble starch, and said water-soluble stabilizing agent is a sodium phosphate trimer, and said water-soluble inorganic salt is a sodium chloride.
9. a claim 5 is described contains 2, and 4-drips the preparation method with the Herbicidal combinations of picloram, it is characterized in that:
The preparation method of aqua may further comprise the steps: with 2,4-drips with picloram and mixes, and adds cosolvent and water-based stabilizing agent; React 1～3h down at 50～90 ℃; Be cooled to 30～50 ℃ after having reacted, add synergist, antifreezing agent, antifoaming agent and water, promptly get aqua;
The preparation method of water-soluble granular formulation may further comprise the steps: with 2; 4-drips with picloram and mixes; Add cosolvent, react 1～3h down, reacted back adding surfactant, binding agent, water-soluble stabilizing agent and water-soluble inorganic salt and mediated at 50～90 ℃; Directly granulation, oven dry promptly got water-soluble granular formulation after kneading finished.
10. each describedly contains 2 among the claim 1-4, and 4-drips the application of Herbicidal combinations in control wheatland and corn field weed with picloram.
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| CN102960344A (en) * | 2012-07-03 | 2013-03-13 | 江西天人生态股份有限公司 | Herbicidal composition for prevention and control of Mikania micrantha, its preparation method and application |
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| CN114557356A (en) * | 2022-02-25 | 2022-05-31 | 江苏仁信作物保护技术有限公司 | Mixed pesticide containing 2,4-D and picloram and preparation method thereof |
| CN115843789A (en) * | 2022-12-02 | 2023-03-28 | 青岛润农化工有限公司 | Aqueous emulsion containing propanil, 2, 4-D isooctyl and picloram isooctyl, preparation method and application thereof |
| CN115843801A (en) * | 2022-12-02 | 2023-03-28 | 山东潍坊润丰化工股份有限公司 | Water dispersible granule containing propanil, 2,4-D potassium salt and picloram potassium salt and preparation method and application thereof |
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| CN102696612B (en) | 2014-12-03 |
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