CN104186518A - Herbicide safener composition - Google Patents
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Abstract
The invention discloses a herbicide safener composition, belonging to the technical field of pesticides, and particularly relates to a post-emergence herbicide safener composition which is high in efficiency and low in toxicity and is has high safety to wheat. The herbicide safener composition comprises a safener and active components, wherein the active components include at least two acetic acid-lactic acid synthetase inhibitor type herbicidal active materials. The herbicide safener composition disclosed by the invention is safe to reaped wheat and afterreap crops, is easy to degrade in environments and has an obvious synergistic effect; compared with the single dosage, herbicidal activity is better, farmland weeding cost is remarkably lowered, and a weeding spectrum is relatively wide.
Description
Technical field
The present invention relates to technical field of pesticide, be specifically related to the field of crop protection preparation, relate in particular to herbicide-safener composition.
Background technology
Along with the extensive use of weed killer herbicide, herbicide damage problem constantly occurs, herbicide-safener is existed to active demand.Herbicide-safener (Safener), also claims antipoison (Antidote) or protectant (Protectant), is the chemical substance with special performance.Herbicide-safener be do not affect weed killer herbicide to the prerequisite of target weeds activity under, cover crop exempts from herbicide damage selectively, thereby strengthens the tolerance of crop to weed killer herbicide, increases the safety of weed killer herbicide to crop.The states such as the U.S., Germany, Switzerland, Japan, Canada, Russia, Korea S and Hungary are more to the research of herbicide-safener, and China starts late, and just starts this research at the end of the eighties.Herbicide-safener comprises amide-type, carbamates, phenoxy carboxylic acid, aryloxyphenoxypropanoates class, sulfonylurea, sulfonamides, imidazolone type, cyclohexanedione class, isoxazole diones, sym-trinitrobenzene etc.The crop of protection mainly contains corn, paddy rice, Chinese sorghum, wheat, barley, rye, cotton, soybean etc.
Mesosulfuron, chemical formula is as shown in (I), for sulfonylurea herbicide, belong to acetic acid lactic acid synthetase inhibitors, mainly absorb by the cauline leaf of plant, through phloem and xylem conduction, absorb by soil on a small quantity, suppress the activity of the acetolactate synthestase in sensitive plant body, cause the biosynthesis block of branched-chain amino acid, thereby inhibition cell division, causes sensitive plant death.Generally, after dispenser 2-4 hour, the absorptive amount of susceptible weeds peaks, and after 2 days, stops growing, and within 4-7 days, rear blade starts yellow, occurs subsequently withered spot, dead after 2-4 week.Mesosulfuron is applicable at soft and semi-rigid type winter wheat variety, can prevent and kill off amur foxtail, Alopecurus, wild oat, caput grass, annual bluegrass, hard grass, alkali thatch, Annual Ryegrass, lolium temulentum, bromegrass, candle grass, Triticum tauschii, wheatgrass, shepherd's purse, broadcast ma wormwood artemisia, ox chickweed, spontaneous rape, clearvers etc.This compound is short in the soil longevity of residure, to second stubble crop safety.In use, mesosulfuron uses and has problems as single component.On the one hand, the herbicide spectrum of mesosulfuron is mainly grassy weed, not good to the broad leaved weed preventive effect in wheat paddock; On the other hand, there is larger difference to the tolerance of mesosulfuron in Wheat Cultivars, and especially, under the adverse environmental factor after dispenser, wheat medical evil seedling death phenomenon happens occasionally, and becomes the critical limitation factor that restriction mesosulfuron uses.
Pyridine sulphur grass amine, chemical formula, as shown in (II), is sulfonamides herbicide, belongs to acetic acid lactic acid synthetase inhibitors.Can prevent and kill off wheat paddock grassy weed, the anti-broad leaved weed of simultaneously holding concurrently.Pyridine sulphur grass amine has good preventive effect to grassy weeds such as bromegrass, amur foxtail, Alopecurus, hard grass, the broad leaved weed such as Veronica, Carolina Cranesbill Herb is had to good preventive effect simultaneously.In use, on the one hand, the herbicide spectrum of pyridine sulphur grass amine is mainly grassy weed, not good to the broad leaved weed preventive effect in wheat paddock; On the other hand, there is larger difference to the tolerance of pyridine sulphur grass amine in Wheat Cultivars, and especially, under the adverse environmental factor after dispenser, wheat medical evil seedling death phenomenon happens occasionally, and becomes the critical limitation factor that restriction pyridine sulphur grass amine uses.
Florasulam, is triazolopyrimidine sulfonamides super-high-efficient weed killer herbicide, belongs to inhibitor of acetolactate synthetase, is inner-adsorption conduction-type herbicide, can conduct to weeds complete stool, thereby herbicide is thorough, can not recur.Efficacy stability at low temperatures, even still can ensure to stablize drug effect in the time of 2 DEG C, this point is that other weed killer herbicides are incomparable.Prevent and kill off broad leaved weed for wheat paddock, broad weed-killing spectrum, can effectively prevent and kill off the most of broad leaved weeds of wheatland, comprise clearvers (Rubiaceae), broadcast ma wormwood artemisia (Cruciferae), the difficult anti-weeds such as shepherd's purse (Cruciferae), chickweed (Caryophyllaceae), corn gromwell (Boraginaceae).In use, florasulam herbicide spectrum, for broad leaved weeds,, need to be used other medicaments with the multiple weeds in field are realized to the object of effectively preventing and kill off without preventive effect the grassy weed in wheat paddock.
Although mesosulfuron or pyridine sulphur grass amine and florasulam mixture show good activity of weeding, particularly in wheat crop for preventing and treating undesirable plant, but they always do not have gratifying characteristic in practice, for example useful plant, particularly to wheat, has inadequate tolerance to it.
Summary of the invention
For addressing the above problem, the invention provides a kind of efficient, low toxicity, to the safe herbicide after seedling safener combination of wheat.
Herbicide-safener composition of the present invention, comprises safener and active component, and described active component is selected from acetic acid lactic acid synthetase inhibitors class herbicidal active compounds at least two kinds.
Preferably, described active component is florasulam and H, and H is mesosulfuron and/or pyridine sulphur grass amine, and the weight ratio of described component H, florasulam and safener is 1-8:1:1-9.
Preferably, described safener is a kind of or any two kinds and the two or more combination in the acid of Shuan Ben oxazole, cyclopropyl-sulfonylamide, mefenpyrdiethyl, cloquintocetmexyl, gibberellin, fenclorim and chlorine oxalene peace.
Preferably, the weight ratio of described component H, florasulam and safener A is 1-4:1:1-4, and more preferably the weight ratio of component H, florasulam and safener A is 3-4:1:1-4.
Preferably, described active component and the safener percentage by weight in herbicide-safener composition is 1～50%, and the percentage by weight of active component in herbicide-safener composition is 0.75～36%.
Further, described herbicide-safener composition also comprises auxiliary agent, and the percentage by weight that auxiliary agent accounts for herbicide-safener composition is 10～99%.Described auxiliary agent is one or more in carrier, surfactant, adhesive, dispersant protecting colloid, thickener, thixotropic agent, bleeding agent, stabilizing agent, chelating agent, dyestuff, colouring agent and polymer.
Carrier refers to a kind of organic or inorganic, natural or synthetic material.They contribute to using of active component, this carrier be generally inertia and must be that agricultural is upper acceptable, particularly processed plant is accepted.Carrier can be solid, as potter's clay, natural or synthetic silicate, silica, resin, wax, solid fertilizer etc.; Or liquid, as water, alcohols, ketone, petroleum distillate, aromatic hydrocarbons or wax hydrocarbon, chlorohydrocarbon, liquefied gas etc.
Surfactant can comprise emulsifier, dispersant or wetting agent, and it can be ionic or nonionic.The example that can mention be salt, oxirane and the fatty alcohol of polyacrylic salt, lignosulfonates, phenolsulfonic acid or naphthalene sulfonic acids or with aliphatic acid or with the polymer of aliphatic amine and fortified phenol (particularly alkylphenol or aryl phenol); sulfosuccinate, the phosphate of the phenol of taurine derivatives (particularly taurine alkane fat) and alcohol phosphate or multi-hydroxy ethyl.At least need a kind of surfactant to exist, to be conducive to the dispersion of active component in water and to be conducive to make them can correctly be applied to plant.
In brief, described herbicide-safener composition can mix with the conventional solid using in the formula of prior art and liquid additive.
Described herbicide-safener composition can be for dispersibling oil-suspending agent, suspending agent, water dispersible granules, dry suspending agent or granula.
Composition of the present invention can be applied on pending plant leaf blade by the method for spraying, be applied to weeds, particularly on the harmful weed infestation of plant growth or easily invade and harass on the surface of impact, the application dosage of these active components is conventionally at 10-100 gram/ha, preferably 15-30 gram/ha.
In the time using herbicide-safener composition of the present invention, obtained unforeseeable crop safety and herbicidal effect, and activity of weeding is than the activity expection summation that uses single weed killer herbicide, more more remarkable than the independent activity of single weed killer herbicide.The high security of crop is shown as to crop and tolerate more high dose, plant height, tillering quantity and the chlorophyll content in leaf blades of crop with contrast without significant difference, the synergy of herbicide-safener composition shows as that amount of application reduces, wider weeds control spectrum, herbicide effect sooner, more lasting control efficiency, be better than existing weed killer herbicide.These characteristics are needed in weeds control practice process just.
Compared with prior art, herbicide-safener composition of the present invention has following advantage: (1) is all very safe to working as stubble wheat and succession crop, overcome the one-component weed killer herbicide longevity of residure defect of looking, crop tolerance dose is higher, affects little on crop plant height, chlorophyll content in leaf blades; (2) in environment, being easy to degraded, is environmentally friendly weed killer herbicide; (3) described weed killer herbicide has obvious synergistic effect compared with single dose, more more remarkable than single dose activity of weeding; (4) spraying times reduces, and farmland weeding cost reduces the pollution of environment; (5) herbicidal spectrum is wider, can prevent and kill off grassy weed, can prevent and kill off again broad leaved weed.
Embodiment
Below in conjunction with embodiment, the present invention is further explained.
Embodiment 1
A kind of herbicide-safener composition, for dispersibling oil-suspending agent, each component and percentage by weight are: 0.75% mesosulfuron+0.25% florasulam+0.75% Shuan Ben oxazole acid+5% dispersant phenethyl phenol polyoxyethylene phosphonate triethanolamine salt+5% emulsifier polyoxyethylene carboxylate+8% emulsifier castor oil polyoxyethylene ether+2% thickener organobentonite+methyl oleate is supplied.
Embodiment 2
A kind of herbicide-safener composition, for dispersibling oil-suspending agent, each component and percentage by weight are: 1% pyridine sulphur grass amine+0.25% florasulam+1.5% Shuan Ben oxazole acid+5% dispersant phenethyl phenol polyoxyethylene phosphonate triethanolamine salt+5% emulsifier polyoxyethylene carboxylate+8% emulsifier castor oil polyoxyethylene ether+2% thickener organobentonite+methyl oleate is supplied.
Embodiment 3
A kind of herbicide-safener composition, for dispersibling oil-suspending agent, each component and percentage by weight are: 0.75% mesosulfuron+0.25% florasulam+0.75% cloquintocetmexyl+5% dispersant phenethyl phenol polyoxyethylene phosphonate triethanolamine salt+5% emulsifier polyoxyethylene carboxylate+8% emulsifier castor oil polyoxyethylene ether+2% thickener organobentonite+methyl oleate is supplied.
Embodiment 4
A kind of herbicide-safener composition, for dispersibling oil-suspending agent, each component and percentage by weight are: 0.75% mesosulfuron+0.25% florasulam+2.25% gibberellic acid+5% dispersant phenethyl phenol polyoxyethylene phosphonate triethanolamine salt+5% emulsifier polyoxyethylene carboxylate+8% emulsifier castor oil polyoxyethylene ether+2% thickener organobentonite+methyl oleate is supplied.
Embodiment 5
A kind of herbicide-safener composition, for dispersibling oil-suspending agent, each component and percentage by weight are: 1% pyridine sulphur grass amine+0.25% florasulam+1% fenclorim+5% dispersant phenethyl phenol polyoxyethylene phosphonate triethanolamine salt+5% emulsifier polyoxyethylene carboxylate+8% emulsifier castor oil polyoxyethylene ether+2% thickener organobentonite+methyl oleate is supplied.
Embodiment 6
A kind of herbicide-safener composition, for dispersibling oil-suspending agent, each component and percentage by weight are: 1% pyridine sulphur grass amine+0.25% florasulam+2% chlorine oxalene peace+5% dispersant phenethyl phenol polyoxyethylene phosphonate triethanolamine salt+5% emulsifier polyoxyethylene carboxylate+8% emulsifier castor oil polyoxyethylene ether+2% thickener organobentonite+methyl oleate is supplied.
Embodiment 7
A kind of herbicide-safener composition, for dispersibling oil-suspending agent, each component and percentage by weight are: 0.75% mesosulfuron+0.25% florasulam+0.75% cyclopropyl-sulfonylamide+5% dispersant phenethyl phenol polyoxyethylene phosphonate triethanolamine salt+5% emulsifier polyoxyethylene carboxylate+8% emulsifier castor oil polyoxyethylene ether+2% thickener organobentonite+methyl oleate is supplied.
Embodiment 8
A kind of herbicide-safener composition, for can suspending agent, each component and percentage by weight be: 0.75% mesosulfuron+0.25% florasulam+0.75% Shuan Ben oxazole acid+5% dispersant sodium lignin sulfonate+2% wetting agent pulls open powder+0.3% thickener xanthans+5% antifreezing agent glycerine+excess water and supplies.Process equipment: mixing kettle, colloid mill, sand mill, clipper etc.Process: all materials are dropped in mixing kettle, be uniformly mixed the rear colloid mill of crossing, enter afterwards three grades of sand millings of sand mill, finally shear and be evenly finished product in clipper.
Embodiment 9
A kind of herbicide-safener composition, for suspending agent agent, each component and percentage by weight are: 0.75% mesosulfuron+0.25% florasulam+0.75% cloquintocetmexyl+5% dispersant sodium lignin sulfonate+2% wetting agent pulls open powder+0.3% thickener xanthans+5% antifreezing agent glycerine+excess water and supplies.Process equipment: mixing kettle, colloid mill, sand mill, clipper etc.Process: all materials are dropped in mixing kettle, be uniformly mixed the rear colloid mill of crossing, enter afterwards three grades of sand millings of sand mill, finally shear and be evenly finished product in clipper.
Embodiment 10
A kind of herbicide-safener composition, for suspension emulsion, each component and percentage by weight are: 0.75% mesosulfuron+0.25% florasulam+0.75% cyclopropyl-sulfonylamide+10% auxiliary agent (4% phenethyl phenol polyoxyethylene phosphonate triethanolamine salt+3% fatty alcohol-polyoxyethylene ether+3% castor oil polyoxyethylene ether)+0.25% thickener xanthans+4% antifreeze glycol+excess water is supplied.Process equipment: mixing kettle, clipper, colloid mill, sand mill etc.Process: mesosulfuron, florasulam, cyclopropyl-sulfonylamide and auxiliary agent etc. are dropped in mixing kettle, be uniformly mixed the rear colloid mill of crossing, enter afterwards three grades of sand millings of sand mill, obtain finished product.
Embodiment 11
A kind of herbicide-safener composition, for water dispersible granules, each component and percentage by weight are: 36% pyridine sulphur grass amine+9% florasulam+36% Shuan Ben oxazole acid+10% dispersant naphthalenesulfonate+5% wetting agent pulls open powder+1% disintegrant polyvinyl alcohol+filler diatomite and supplies.Process equipment: airslide disintegrating mill, coulter type mixer, basket comminutor, drying box, screening machine etc.Process: by the even above-mentioned mixing of materials air-flow crushing of crossing, add kneading, dry after granulation, final sizing obtains finished product.
Embodiment 12
A kind of herbicide-safener composition, for water dispersible granules, each component and percentage by weight are: 36% pyridine sulphur grass amine+9% florasulam+36% mefenpyrdiethyl+10% dispersant naphthalenesulfonate+5% wetting agent pulls open powder+1% disintegrant polyvinyl alcohol+filler diatomite and supplies.Process equipment: airslide disintegrating mill, coulter type mixer, basket comminutor, drying box, screening machine etc.Process: by the even above-mentioned mixing of materials air-flow crushing of crossing, add kneading, dry after granulation, final sizing obtains finished product.
Embodiment 13
A kind of herbicide-safener composition, for water dispersible granules, each component and percentage by weight are: 36% mesosulfuron+12% florasulam+12% cyclopropyl-sulfonylamide+10% dispersant naphthalenesulfonate+5% wetting agent pulls open powder+1% disintegrant polyvinyl alcohol+filler diatomite and supplies.Process equipment: airslide disintegrating mill, coulter type mixer, basket comminutor, drying box, screening machine etc.Process: by the even above-mentioned mixing of materials air-flow crushing of crossing, add kneading, dry after granulation, final sizing obtains finished product.
Embodiment 14
A kind of herbicide-safener composition, is granule, and each component and percentage by weight are: 0.75% mesosulfuron+0.25% florasulam+0.25% cyclopropyl-sulfonylamide+3.5% polyethylene glycol+2%30# machine oil+carrier coal gangue particle is supplied.Process equipment: screening machine, cone-type mixer, drying box etc.Process: coal gangue particle is sieved with screening machine, afterwards all materials are mixed in cone-type mixer, can obtain finished product after being dried.
Embodiment 15
A kind of herbicide-safener composition, is granule, and each component and percentage by weight are: 1% pyridine sulphur grass amine+0.25% florasulam+0.5% Shuan Ben oxazole acid+3.5% polyethylene glycol+2%30# machine oil+carrier coal gangue particle is supplied.Process equipment: screening machine, cone-type mixer, drying box etc., process: coal gangue particle is sieved with screening machine, afterwards all materials are mixed in cone-type mixer, can obtain finished product after being dried.
Embodiment 16
A kind of herbicide-safener composition, is granule, and each component and percentage by weight are: 1% pyridine sulphur grass amine+0.25% florasulam+2% mefenpyrdiethyl+3.5% polyethylene glycol+2%30# machine oil+carrier coal gangue particle is supplied.Process equipment: screening machine, cone-type mixer, drying box etc., process: coal gangue particle is sieved with screening machine, afterwards all materials are mixed in cone-type mixer, can obtain finished product after being dried.
Embodiment 17 safety testings
1, below in conjunction with the safety of the indoor virulence test data interpretation herbicide-safener composition of the present invention to Wheat Cultivars tolerance.
(1) wheat breed is selected and contrast medicament
Select Yangmai No.158, Yanzhan4110, Henan wheat 18, Jimai 20 to amount to 4 kinds and do experimental cultivar.Contrast medicament is the embodiment 1-16 that does not add safener.
(2) cultivation of wheat seed pre-treatment mode and seedling
Wheat seed is at 1 DEG C of seed soaking 21h of 25 scholar, and at 27 DEG C, vernalization is to the long 3mm of root left and right, and selecting long consistent planting seed to the specification of size, color and root is in 12x12cm nutritive cube, 20, every alms bowl.Nutritive cube is put into greenhouse, and 16-27 DEG C, at normal sunshine, waters at regular time and quantity, treats that growth of seedling is for subsequent use to 3-4 Leaf-Age-Period.
(3) chemicals treatment mode
5 concentration are established in test, and active constituent content is respectively 8,16,32,64,128mg/L, establishes clear water contrast, and each processing repeats 3 times.Treat the potted plant 3-4 of the being cultured to leaf phase, will be placed in automatic sprayer for the potted plant wheat plant of examination (every basin 20 strains, each processing 6 basins), spouting liquid is 45mL/m
2, by 600mL/hm
2ratio in hydrojet, add spreader-sticker NP-10, be diluted with water to a series of concentration, under 0.4MPa pressure, 53cm/s translational speed, spraying is processed, and separately establishes the clear water that does not spray medicine and compares.
(4) determining of wheat biologicall test index
Under said method, cultivate wheat, after 14d, measure the acrial part fresh weight of wheat.Each concentration is established 3 repetitions, and each kind repeats 1-2 time.Calculate fresh weight inhibiting rate by following formula:
SPSS software processing for data, does regression analysis to concentration logarithm and the corresponding probit value of inhibiting rate, virulence regression equation Y=A+BX, and calculate concentration (IC50 value) in inhibition.Calculate respectively concentration in the inhibition of each processing, relatively the tolerance of Wheat Cultivars to different medicaments.Calculate tolerance multiple by following formula:
N＝1-16
(5) result of the test
Taking embodiment 1 as example.3d after processing, under low dosage 8mg/L, 4 kind wheat growths that embodiment 1 processes are not affected by medicament, there is no difference with contrasting, do not add the poisoning in various degree of 4 product grow wheats that the embodiment 1 of safener processes, and along with concentration raises, inhibition degree increases the weight of, under maximum concentration 128mg/L, do not add 4 product grow wheats that the embodiment 1 of safener processes and be subject to severe inhibition, blade is withered and yellow, short and small.After dispenser, when 5d, 4 kind wheat growths under embodiment 1 low dosage 8mg/L have no adverse effects, each wheat breed performance dark green leaf color, and growth is normal.Do not add 4 kind wheats poisoning that the embodiment 1 of safener processes and further increase the weight of, high dose severe inhibition wheat seedling growth, seedling leaf look moves back green, and there is moving back green fleck in blade.While processing rear 10d, 4 kind wheat growths under embodiment 1 low dosage 8mg/L are not affected by medicament, do not add under the embodiment 1 low dosage 8mg/L of safener poisoning still obvious, and wheat growth after high dose pharmacy effect is subject to severe inhibition, root system is small and weak, cauline leaf yellow, stunt, deformity, blade tip is withered, cannot recover.
Result of the test is in table 1.
The difference of table 1 Wheat Cultivars to embodiment 1～16 tolerance
Add after safener, different cultivars wheat has all obtained certain raising to the tolerance of embodiment 1～16, tolerance reached do not add safener 2.28-4.43 doubly.Wherein, the raising of the tolerance of embodiment 1 to wheat is maximum, reaches 4.43 times.
2, further explain safety of the present invention below in conjunction with field experiment.
Test method: wheat breed is Jimai 20.3 leaf-4 leaf the phases of wheat, mean temperature was more than 10 DEG C to jointing.Within 40 days after dispenser, evaluate the safety to wheat by table 2, evaluation result is in table 3.
Table 2 weed killer herbicide crop safety ocular estimate evaluation criterion
The tolerance difference of table 3 responsive type wheat breed to herbicide-safener composition
Embodiment 18 tests of pesticide effectiveness
1, below in conjunction with the indoor virulence test data to shepherd's purse, further explain synergistic effect of the present invention.Select weed seed vernalization full, homogeneous, the germination rate of seed is more than 80%, and every basin is sowed 50 of weed seeds.Test soil is chosen the content of organic matter≤2%, PH neutrality, the air-dry sandy loam that permeability is good, sieve.Test soil proportioning device basin alms bowl 3/4 place.Then from the pouring of basin alms bowl top, make soil completely moistening to saturation state.Supply the uniform broadcasting of examination weed seed in soil surface (convert by germination rate, ensure that the density of control treatment weeds is in every square meter 120-150 strain), then according to weed seed size earthing 0.5cm-2cm by pretreated.Treat that weeds grow to 3 leaf 1 hearts, cauline leaf spraying is processed, and 30 liters/mu of spouting liquids are established clear water contrast.Press the method that the nineteen sixties such as Sun Yunpei propose, SPSS software processing for data, does regression analysis to concentration logarithm and the corresponding probit value of inhibiting rate, virulence regression equation Y=A+BX, and calculate the lethal concentration of 50 (LD50 value), calculate co-toxicity coefficient.
Calculate co-toxicity coefficient by following formula:
The ratio of toxicity index × B of the ratio+B of toxicity index × A of theoretical toxicity index TTI=A in mixture in mixture
Co-toxicity coefficient is greater than 120 and shows that three kinds of active principles have synergistic effect, and co-toxicity coefficient has addition between three between 100 and 120, and co-toxicity coefficient is less than 100, shows that three kinds of active principles exist antagonism.
Measurement result is as shown in table 4.
Table 4, toxicity measurement result
Above-mentioned result of the test shows, the composition of embodiment 1 has very high activity to shepherd's purse, and preventive effect is high each single dose obviously, and co-toxicity coefficient is significantly higher than 120, illustrate combine in the obvious synergistic effect of tool between each component.
2,, below in conjunction with the indoor virulence test to clearvers, further explain of the present invention
Test method is with above-mentioned 1, as shown in table 5 to the virulence test result of clearvers.
Table 5, toxicity measurement result
| Medicament | Regression equation | LD50 value (g a.i./mu) | Co-toxicity coefficient |
| 30 grams per liter mesosulfurons dispersible oil-suspending agent | Y＝1.834+3.197X | 0.267 | - |
| 50 grams per liter florasulam suspending agents | Y＝1.857+3.361X | 0.280 | - |
| Embodiment 1 | Y＝1.667+2.317X | 0.191 | 141 |
Above-mentioned result of the test shows, the composition of embodiment 1 has very high activity to clearvers, and preventive effect is high each single dose obviously, and co-toxicity coefficient is significantly higher than 120, illustrate combine in the obvious synergistic effect of tool between each component.
Embodiment 19 field trials
1, the herbicide-safener composition eliminating weed in wheat field drug effect and the safety testing to wheat that utilize embodiment 1～16 to make.
Test method: wheat breed is for raising wheat 13.3 leaf-4 leaf the phases of wheat, the weeds 1-3 leaf phase, while substantially all sprouting, mean temperature was more than 10 DEG C to jointing.Within 40 days after dispenser, investigate the preventive effect to weeds and the safety (table 6) to wheat, calculate strain preventive effect by following formula.Wheat safety is evaluated by table 3.
Table 6, the preventive effect of herbicide-safener composition of the present invention to weeds of wheat
Consumption in table, is the consumption of active ingredient, and from table, result of the test can be found out, herbicide-safener composition of the present invention has good preventive effect to eliminating weed in wheat field.Between herbicidal activity composition, have significant synergies, especially particularly evident to clearvers, shepherd's purse expression effect.In single dose, 30 grams per liter mesosulfurons dispersible oil-suspending agent, 7.5% pyridine sulphur grass amine water dispersible granules uses high dose not only wheat to be had to certain poisoning, and because its residual accumulation of unit in soil is many, all be there is to certain poisoning risk in corn, paddy rice and some vegetables of rear stubble.Above-mentioned 16 embodiment, embodiment 1 dispersibles oil-suspending agent and has in use greatly improved crop safety, and the most outstanding to the preventive effect of weeds.
2, the demonstration test of herbicide-safener composition for preventing and controlling weeds of wheat of the present invention
2012-2013 promotes exemplary test in 6 regional 30Ge Mai districts such as Jiyang Area, Shandong, Xinghua, Jiangsu, Jingyang, Shaanxi, Sixian County, Anhui, Zhenyang, Henan, Jing Zhou, Hubei.
Test method: the 3 leaf-4 leaf phases of wheat, the weeds 1-3 leaf phase, while substantially all sprouting, mean temperature was more than 10 DEG C to jointing.After dispenser, 40 days investigation preventive effects (table 8), calculate strain preventive effect by following formula.Wheat safety is evaluated by table 3, and result is as shown in table 7.
The field demonstration test of table 7 herbicide-safener composition of the present invention
Note: weed community type in each demonstration pilot project: Jiyang (broadcasting ma's wormwood artemisia+shepherd's purse+bromegrass), Xinghua (clearvers+shepherd's purse+ox chickweed+bromegrass+amur foxtail+Alopecurus), Jingyang (broadcasting ma's wormwood artemisia+shepherd's purse+bromegrass+Annual Ryegrass+Triticum tauschii), Sixian County (broadcasting ma's wormwood artemisia+shepherd's purse), Zhenyang (clearvers+shepherd's purse+Yin Du Han dish+wild oats), Jing Zhou (clearvers+ox chickweed+annual bluegrass).
Consumption in table, is the consumption of active ingredient, and from table, result of the test can be found out, herbicide-safener composition of the present invention has good preventive effect to eliminating weed in wheat field, and the safety of wheat is improved a lot.Between herbicidal activity composition, have significant synergies.In single dose, 30 grams per liter mesosulfurons dispersible oil-suspending agent, 7.5% pyridine sulphur grass amine water dispersible granules uses high dose not only wheat to be had to certain poisoning.
Above-described embodiment is not unique restriction of the present invention.For some wheat breed, these embodiment demonstrate significant especially crop safety.For some weeds, these embodiment demonstrate significant especially validity.For those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvement, these improvement should be considered as protection scope of the present invention.
Claims (10)
1. a herbicide-safener composition, is characterized in that, comprises safener and active component, and described active component is selected from acetic acid lactic acid synthetase inhibitors class herbicidal active compounds at least two kinds.
2. herbicide-safener composition according to claim 1, is characterized in that, described active component is florasulam and H, and H is mesosulfuron and/or pyridine sulphur grass amine, and the weight ratio of described component H, florasulam and safener is 1-8:1:1-9.
3. herbicide-safener composition according to claim 1 and 2, it is characterized in that, described safener is a kind of or any two kinds and the two or more combination in the acid of Shuan Ben oxazole, cyclopropyl-sulfonylamide, mefenpyrdiethyl, cloquintocetmexyl, gibberellin, fenclorim and chlorine oxalene peace.
4. herbicide-safener composition according to claim 3, is characterized in that, the weight ratio of described component H, florasulam and safener A is 1-4:1:1-4.
5. herbicide-safener composition according to claim 4, is characterized in that, the weight ratio of described component H, florasulam and safener A is 3-4:1:1-4.
6. herbicide-safener composition according to claim 1 and 2, is characterized in that, described active component and the safener percentage by weight in herbicide-safener composition is 1～50%.
7. herbicide-safener composition according to claim 6, is characterized in that, the percentage by weight of described active component in herbicide-safener composition is 0.75～36%.
8. herbicide-safener composition according to claim 6, is characterized in that, described herbicide-safener composition also comprises auxiliary agent, and the percentage by weight that auxiliary agent accounts for herbicide-safener composition is 10～99%.
9. herbicide-safener composition according to claim 7, is characterized in that described auxiliary agent is one or more in carrier, surfactant, adhesive, dispersant protecting colloid, thickener, thixotropic agent, bleeding agent, stabilizing agent, chelating agent, dyestuff, colouring agent and polymer.
10. herbicide-safener composition according to claim 7, is characterized in that, described herbicide-safener composition can be and dispersibles oil-suspending agent, suspending agent, water dispersible granules, dry suspending agent or granula.
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| CN109757249A (en) * | 2019-03-25 | 2019-05-17 | 西南林业大学 | A method of Mikania micrantha is removed using chloropyuril class combination exogenous hormone |
| CN111165489A (en) * | 2020-02-12 | 2020-05-19 | 镇江建苏农药化工有限公司 | Methyldisulforon composition added with safener and preparation method thereof |
| CN111328822A (en) * | 2020-04-20 | 2020-06-26 | 山东碧奥生物科技有限公司 | Mesosulfuron-methyl and florasulam compounded dispersible oil suspension and preparation method thereof |
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