CN104522023A - Wheat field herbicide composition containing clodinafop-propargyl - Google Patents
Wheat field herbicide composition containing clodinafop-propargyl Download PDFInfo
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- CN104522023A CN104522023A CN201410811363.3A CN201410811363A CN104522023A CN 104522023 A CN104522023 A CN 104522023A CN 201410811363 A CN201410811363 A CN 201410811363A CN 104522023 A CN104522023 A CN 104522023A
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Abstract
The invention discloses a wheat field herbicide composition containing clodinafop-propargyl. The active ingredients of the herbicide composition consist of mesosulfuron, the clodinafop-propargyl and florasulam, wherein the mass ratio of the mesosulfuron to the clodinafop-propargyl to the florasulam is (1-10) to (15-72) to (0.5-12). The herbicide composition has a certain control effect on broadleaf weeds and grassy weeds in a wheat field, and the highest decrease rate and the highest control rate can be 100 percent after 30-day drug administration.
Description
Technical field
The invention belongs to pesticide herbicide technical field, particularly containing the herbicide composition for wheat field of alkynes oxalic acid.
Background technology
According to national weeds reconnaissance information, China's wheat weeds kind has kind more than 200, and crop smothering area accounts for more than 30% of wheat planting area, and loss accounts for 15% of wheat gross yield, reach 10,000,000,000 kilograms, wherein the harm such as ox chickweed, clearvers, Descurainia sophia, common vetch is serious.But along with long-term, the large scale application of weed killer herbicide, farmland weed chemical control exists Weed Resistance, population succession and drug injury problem and is on the rise, have a strong impact on the high yield of wheat and the safety of good harvest and succession crop.At present, in wheatland there are some drawbacks in conventional medicament.As sulfonylurea herbicide tribenuron-methyl, the too high and excessively late use of bensulfuron-methyl consumption can cause poisoning to succession crop peanut, soybean.Phenoxy carboxylic acid herbicides 2,4-d butyl ester, mcpa sodium consumption too high and use improper easily cause chemical injury of crops produce drift can to neighbouring dicotyledonous crops produce poisoning.If Long-Time Service single herbicide prevents and kill off sensitization weeds quantity decline in addition, insensitive or malignant weed quantity rises, and causes weed community to change.In the winter wheat producing region of the single use of weed killer herbicide, weed community in wheat field there occurs serious change, and the malignant weed that the multiple weed killer herbicide such as clearvers, wartwort, grandmother's sodium, shepherd's purse is all difficult to prevent and treat increases year by year, and has had a strong impact on the results of wheat crop output.
Isoproturon (3-p-cumenyl-1,1-dimethyl urea) is substituted urea class selective herbicide, for inner sucting conduction type processing soil treatment agent is held concurrently cauline leaf inorganic agent, after its medicament is absorbed by plant root, teach and be accumulated in blade, inhibited photosynthesis, causing weeds dead.Isoproturon is insoluble in water, dissolves in most of organic solvent, more stable to acid, alkali and light, has wetting powder, to people and animals' low toxicity.Annual weed is prevented and kill off, consumption 1.0 ~ 1.5kg/ha for barley, wheat, cotton, peanut, corn, paddy rice, legume crop Tanaka.
Flucarbazone is sulfonylurea internal-suction type efficient wheat field herbicidal, has obvious preventive effect to the grassy weeds such as wild oat, bromegrass, amur foxtail and multiple broadleaf weed.Its import name is called young tiger tiger, and be a kind of novel compounds, its active ingredient can be absorbed by the root of weeds and cauline leaf, by suppressing the activity of acetolactate synthestase in weeds body, destroying the normal Physiological and Biochemical Metabolism of weeds and playing activity of weeding.Young tiger tiger effectively can prevent and kill off wheat paddock major part grassy weed, simultaneously also can effective control section broad leaved weed.Young tiger tiger can very fast metabolism in wheat body, has fabulous safety to wheat.
Clodinafop-propargyl belongs to fragrant phenoxy phenoxy propionic acid weed killer herbicide, and can effectively suppress the biosynthesis of class ester to be the auxiliary quick A hydroxylase inhibitors of acetyl, this product is degraded to free acid phenyl very soon in soil and pyridine moiety enters soil.This product can prevent and treat the grassy weeds such as wheat vole tail amur foxtail, tall oat grass, perennial ryegrass, rough stalked blue grass green foxtail.
Summary of the invention
The object of the invention is just to be to provide a kind of synergistic effect significantly, broad weed-killing spectrum, to the herbicide composition for wheat field containing alkynes oxalic acid of wheat and succession crop safety.
Herbicide composition for wheat field of the present invention takes following scheme to realize:
A kind of herbicide composition for wheat field containing alkynes oxalic acid, the effective ingredient of described herbicidal composition is made up of mesosulfuron, alkynes oxalic acid and florasulam, and the mass ratio of described mesosulfuron, alkynes oxalic acid and florasulam is 1 ~ 10: 15 ~ 72: 0.5 ~ 12.
Further, described herbicidal composition also comprises synergist, and the quality of described synergist accounts for the 1-5% of herbicidal composition gross mass.
Further, described synergist is organosilicon, cyclohexanedione or pyrrolidones.
In order to reach better herbicidal effect, the quality of described isoproturon, flucarbazone, clodinafop-propargyl and synergist is 10:72:7.6:5.
Described herbicidal composition also contains agriculturally acceptable surfactant and carrier.
The formulation of described herbicidal composition is aqueous emulsion, microemulsion, suspending agent, oil-suspending agent, wetting powder or water dispersible granules.
In the present composition, the consumption of active component mesosulfuron, alkynes oxalic acid and florasulam to depend on when being used alone respective amount of application and three's portfolio ratio and synergy degree; the mass ratio of special protection of the present invention mesosulfuron, alkynes oxalic acid and florasulam three is 1 ~ 10: 15 ~ 72: 0.5 ~ 12, and the proportioning of best herbicidal effect is the quality of isoproturon, flucarbazone, clodinafop-propargyl and synergist is 10:72:7.6:5.
Organosilicon refers to containing Si-O key, and has at least an organic group to be the compound be directly connected with silicon atom, and it has unique structure: C-H is nonpolarity, makes intermolecular interaction very faint; Si-O bond distance is longer, and Si-O-Si key bond angle is large; Si-O key is the covalent bond (covalent bond has directionality, and ionic bond is non-directional) with 50% ionic bond feature.Due to the structure of organosilicon uniqueness, have both the performance of inorganic material and organic material, have that surface tension is low, viscosity-temperature coefficient is little, agricultural chemicals can be impelled to soak rapidly, penetrate into the surface of plant, make the effect of agricultural chemicals perform to maximum effectiveness, and extend the action time of medicament.In addition, synergist cyclohexanedione, pyrrolidones also obviously can improve wetting, the spread of mesosulfuron, alkynes oxalic acid and florasulam, dispersion, delay and permeance property, reduce spray liquor (air-flow) drift with the wind, prevent or alleviate the infringement to contiguous sensitive crop etc., be beneficial to liquid blade face sprawl and stick, reduce ultraviolet to pesticidal preparations in the decomposition of active ingredient, reach and extend the drug effect term of validity, improve its biologically active; Suppress or weaken the anti-poisoning effect of the removing toxic substances of target weeds to pesticide activity, delaying the accretion rate of medicament in controlling object, thus increase biological preventive effect.So after this Pesticidal combination increases synergist, its insecticidal effect can be significantly improved.
Herbicidal composition of the present invention, can add agriculturally acceptable surfactant and carrier, be made into wetting powder, water dispersion granule or oil-suspending agent etc.Wherein surfactant is alkylphenol polyoxyethylene, fatty alcohol-polyoxyethylene ether, phenethyl phenol polyethenoxy ether, phenethyl phenol polyethenoxy polyethenoxy ether, castor oil ethylene oxide adduct, alkylphenol polyoxyethylene formaldehyde condensation products, alkylphenol polyoxyethylene phosphate, phenethyl phenol polyethenoxy ether phosphate, Ben-zylphenol Polyoxyethyl Ether, polyoxyethylene carboxylate, calcium dodecyl benzene sulfonate, neopelex, lignosulfonates, NNO, NO, MF, ZS-1, lauryl sodium sulfate, pull open powder, N-Methyl fatty acyl taurines sodium, alkylphenol polyoxyethylene formaldehyde condensation products sulphate, the withered powder of tea, saponin, lignosulfite, aliphatic alcohol sulfate, penetrant t, bleeding agent OT, JFC, fatty acid amide-N-N-methyltaurine sodium salt, sodium sulfate of polyethenoxy ether of fatty alcohol, pull open powder etc.
Carrier is divided into solid carrier and solvent, and solid carrier has bentonite, White Carbon black, kaolin, precipitated calcium carbonate, sodium sulphate, ammonium sulfate, diatomite, starch, potter's clay etc.; Solvent has toluene, dimethylbenzene, chlorobenzene, solvent naphtha, α-methyl naphthalene, turpentine oil, carrene, chloroform, methyl alcohol, ethanol, glycerine, ethylene glycol, butanols, isoamyl alcohol, propane diols, cyclohexanone, isophorone, acetophenone, ethyl acetate, propyl acetate, butyl acetate, DMF, DMSO, cellosolve etc., above-mentionedly to can be used alone, also can more than two kinds compound uses.
Various auxiliary agent or carrier all can commercially have been bought above.
Herbicidal composition of the present invention has addition or synergistic effect, sprays, prevent and kill off the multiple grass family of wheatland and broad leaved weed after being mainly used in wheatland seedling.Good control efficiency is had to the weeds such as amur foxtail, wild oat, hard grass, chickweed, Descurainia sophia, shepherd's purse, clearvers, Veronica, common vetch.This product of standing grain and broad leaved weed can be prevented and kill off in wheat seedling phase or the dispenser of wheat period of seedling establishment simultaneously, control wheat and be subject to Weed infestation whole breeding time.Have that activity of weeding is high, broad weed-killing spectrum, feature easy to use, Herbicidal combinations of the present invention, be easy to degraded in the environment, overcome the shortcoming of long residual herbicides use to succession crop poor stability, to when succession crop safety after stubble wheat, belong to environmentally friendly weed killer herbicide.
Embodiment
The present invention is further illustrated below with the specific embodiment of several different dosage form.But the present invention is only limitted to absolutely not these examples.In all formulas, percentage is parts by weight.
One, form formula example:
Mesosulfuron, alkynes oxalic acid and florasulam are carried out in proportion mixing preparing aqueous emulsion, microemulsion, suspending agent, oil-suspending agent, wetting powder or water dispersible granules according to compounding method of preparation with auxiliary agent or carrier, concrete each formula is as follows:
Embodiment 1:40.8% aqueous emulsion
Mesosulfuron 5.6%, alkynes oxalic acid 30%, florasulam 5.2%, ethanol/isopropyl alcohol 14%, phenethyl phenol polyoxy second
Alkene ether 12%, water polishing are to 100%.
Embodiment 2:53.8% aqueous emulsion
Mesosulfuron 8.2%, alkynes oxalic acid 38%, florasulam 7.6%, ethanol/ethylene glycol 12%, sorbester p18 8%, water polishing are to 100%.
Embodiment 3:16.5% microemulsion
Mesosulfuron 1%, alkynes oxalic acid 15%, florasulam 0.5%, bleeding agent OT 8%, NP-10 16%, water polishing are to 100%.
Embodiment 4:30.8% microemulsion
Mesosulfuron 5%, alkynes oxalic acid 20%, florasulam 5.8%, castor oil polyoxyethylene ether 10%, polysorbate60 12%, water polishing are to 100%.
Embodiment 5:40% microemulsion
Mesosulfuron 7.5%, alkynes oxalic acid 29%, florasulam 3.5%, span 20 8%, OP 10 12%, water polishing are to 100%.
Embodiment 6:61.2% suspending agent
Mesosulfuron 7%, alkynes oxalic acid 46%, florasulam 8.2%, Tween 80 1.5%, PEG 2,000 3%, water polishing are to 100%.
Embodiment 7:42.4% suspending agent
Mesosulfuron 2.6%, alkynes oxalic acid 38%, florasulam 1.8%, NNO 1.5%, lignosulfonates 2%, water polishing are to 100%.
Embodiment 8:26% oil-suspending agent
Mesosulfuron 3.5%, alkynes oxalic acid 18%, florasulam 4.5%, organosilicon 3%, di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate 1%, span 20 2%, corn oil polishing are to 100%.
Embodiment 9:34.3% oil-suspending agent
Mesosulfuron 6.5%, alkynes oxalic acid 25%, florasulam 2.8%, organosilicon 4%, di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate 3%, pull open powder 2%, methyl oleate polishing to 100%.
Embodiment 10:42% oil-suspending agent
Mesosulfuron 8.4%, alkynes oxalic acid 28%, florasulam 5.6%, organosilicon 2%, sodium lignin sulfonate 1.5%, sorbester p17 2%, methyl oleate polishing are to 100%.
Embodiment 11:81.5% wetting powder
Mesosulfuron 9.5%, alkynes oxalic acid 60%, florasulam 12%, cyclohexanedione 2%, pull open powder 1%, dodecyl sulphate calcium 3%, diatomite polishing to 100%.
Embodiment 12: wetting powder 83%
Mesosulfuron 8%, alkynes oxalic acid 65%, florasulam 10%, organosilicon 3%, neopelex 1%, OP-9 4%, kaolin polishing are to 100%.
Embodiment 13:86% water dispersible granules
Mesosulfuron 9.6%, alkynes oxalic acid 70%, florasulam 6.4%, pyrrolidones 1%, NP-10 3%, penetrating agent JFC 1.5%, sodium sulphate polishing are to 100%.
Embodiment 14:89.6% water dispersion granule
Mesosulfuron 10%, alkynes oxalic acid 72%, florasulam 7.6%, organosilicon 5%, polysorbate60 2%, NNO 1.5%, attapulgite polishing are to 100%.
Embodiment 15:60% water dispersion granule
Mesosulfuron 4%, alkynes oxalic acid 52%, florasulam 4%, pyrrolidones 4%, calcium dodecyl benzene sulfonate 1.5%, pull open powder 1%, fine particle calcium carbonate polishing to 100%.
Two, indoor biological determination of activity:
Below by way of the composition formed by proportioning mesosulfuron, alkynes oxalic acid, florasulam, the determination of activity of weeds of wheat indoor biological is verified to the reasonability of formula.
In the present composition; mesosulfuron (95% former medicine) is produced by chemical plant, Xiuzhou City, Anhui Province Co., Ltd; florasulam (98% former medicine) is produced by Jiangsu Repont Pesticide Factory Co., Ltd.; alkynes oxalic acid (95% former medicine) is produced by Zhejiang Yongnong Chemical Industry Co. Ltd., and synergist is produced by Shanghai Hui Jin Chemical trade Co., Ltd.
Test method adopts greenhouse pot culture method, quantitative weeds (strain of every basin 40) and wheat seed is sowed in basin, when growing to the 2-4 leaf phase after weeds are unearthed, cauline leaf spraying process is carried out with sprayer, be placed on after processing latter 6 hours in greenhouse to continue to cultivate and observe, the preventive effect of 15 days " Invest, Then Investigate "s to weeds and the safety to wheat.Investigation method adopts absolute value investigation method, first investigate the fresh weight of the remaining weeds of every basin, then by the fresh weight preventive effect that following formulae discovery respectively processes: E=(C-T)/C × 100%, in formula, E is fresh weight preventive effect, C is contrast weeds fresh weight, and T is process weeds fresh weight.Then with Colby method, co-toxicity effect to weeds is detected to weeds activity, by Colby method, work as E
0-E>10% is synergistic effect; Work as E
0-E<-10% is antagonism; As-10%≤E
0-E≤10% is addition.
Wherein mesosulfuron, alkynes oxalic acid, the composite co-toxicity effect to Descurainia sophia of florasulam three are as shown in table 1, its E
0-E is between 17.67 ~ 35.27, synergy type is synergistic effect, and its synergistic effect presents difference with compound proportion difference, in 15 the different mixing match measured, with add 5% organosilicon, mesosulfuron, alkynes oxalic acid, florasulam weight ratio for 10:72:7.6 effect the most obvious, its E
0-E value is up to 35.27.
Table 1: herbicidal composition is to the co-toxicity effect (spray-on process) of Descurainia sophia
Mesosulfuron, alkynes oxalic acid, the composite co-toxicity effect to amur foxtail of florasulam three are as shown in table 2, its E
0-E is between 15.68 ~ 34.37, synergy type is synergistic effect, and synergistic effect presents difference with compound proportion difference, in 15 the different mixing match measured, to add 5% organosilicon, the weight ratio of mesosulfuron, alkynes oxalic acid, florasulam is that 10:72:7.6 effect is the most obvious, E
0-E value is up to 34.37.
Table 2: herbicidal composition is to the co-toxicity effect of amur foxtail
Note: in upper table 1,2, proportioning is weight ratio.
Three, test examples:
1, trial crops and object: supplying to study thing is winter wheat, and subjects is based on the broadleaved herb weeds of Descurainia sophia, clearvers etc. and the grassy weed such as amur foxtail, wild oat.
Test medicine: 53.8% aqueous emulsion (8.2% mesosulfuron 38% alkynes oxalic acid 7.6% florasulam) (our company's production) in embodiment 2;
Contrast medicament: 30g/L mesosulfuron dispersibles oil-suspending agent (chemical plant, Xiuzhou City, Anhui Province Co., Ltd)
15% Clodinafop-propargyl aqueous emulsion (Zhejiang Yongnong Chemical Industry Co. Ltd.)
50g/L florasulam suspending agent (Jiangsu Repont Pesticide Factory Co., Ltd.)
Spraying time and method: so test dispenser on November 05 in 2013, at that time wheat 3 leaf one heart stage, clearvers 2 ~ 3 leaf one heart stage, Veronica 1 ~ 4 leaf one heart stage, every mu of capable spraying of preparating liquid 45KG, does not occur frosty weather in 1 week after dispenser routinely.
Control time and number of times: investigation weeds radix before dispenser, observe treatment region rice shoot leaf color, upgrowth situation, if any exception and detailed record in after dispenser 3,5 days.Within after dispenser 15 days, 30 days, investigate strain preventive effect and weeds overground part fresh weight respectively.
Investigation method: adopt 5 point samplings, each community Stochastic choice investigates 5 points, often some area 0.25m
2, the strain number of two kinds of main weeds and total weeds is investigated in dispenser respectively after 15 days, investigate strain number and the overground part fresh weight of all kinds of weeds and total weeds after 30 days simultaneously, and calculate decline rate and anti-efficiency respectively according to the following formula, its concrete data are as shown in table 3.
In formula, CK represents that clear water contrasts.
Table 3: prevent and kill off winter wheat field Weed-control effect
In above formula, CK represents that clear water contrasts.
Interpretation of result: 53.8% aqueous emulsion of the present invention prevents and kill off the preventive effect of winter wheat weeds to total weeds, and after medicine, the preventive effect of 30 days is the highest, average decline rate is up to 97.21%, and on average the rate of preventing and kill off is 98.32%.The average decline rate that 30g/L mesosulfuron dispersibles oil-suspending agent and 50g/L florasulam suspending agent is respectively 66.35% and 66.20%, both on average the rate of preventing and kill off be respectively 74.05% and 75.35%.And the average decline rate of 15% Clodinafop-propargyl aqueous emulsion is only 53.54%, on average prevent and kill off rate 64.04%.53.8% aqueous emulsion is described to the control efficiency of winter wheat weeds apparently higher than each single dose effects such as mesosulfuron, alkynes oxalic acid, florasulams, therefore there is good popularizing application prospect.
2, trial crops and object: supplying to study thing is winter wheat, and subjects is based on the broadleaved herb weeds of Descurainia sophia, clearvers etc. and the grassy weed such as amur foxtail, wild oat.
Test medicine: 40% microemulsion (7.5% mesosulfuron 29% alkynes oxalic acid 3.5% florasulam) (our company's production) in embodiment 5;
Contrast medicament: 30g/L mesosulfuron dispersibles oil-suspending agent (chemical plant, Xiuzhou City, Anhui Province Co., Ltd)
15% Clodinafop-propargyl aqueous emulsion (Zhejiang Yongnong Chemical Industry Co. Ltd.)
50g/L florasulam suspending agent (Jiangsu Repont Pesticide Factory Co., Ltd.)
Spraying time and method: so test dispenser on November 01 in 2013, at that time wheat 3 leaf one heart stage, clearvers 2 ~ 3 leaf one heart stage, Veronica 1 ~ 4 leaf one heart stage, every mu of capable spraying of preparating liquid 45KG, does not occur frosty weather in 1 week after dispenser routinely.
Control time and number of times: investigation weeds radix before dispenser, observe treatment region rice shoot leaf color, upgrowth situation, if any exception and detailed record in after dispenser 3,5 days.Within after dispenser 15 days, 30 days, investigate strain preventive effect and weeds overground part fresh weight respectively.
Investigation method: adopt 5 point samplings, each community Stochastic choice investigates 5 points, often some area 0.25m
2, the strain number of two kinds of main weeds and total weeds is investigated in dispenser respectively after 15 days, investigate strain number and the overground part fresh weight of all kinds of weeds and total weeds after 30 days simultaneously, and calculate decline rate and anti-efficiency, its concrete data are as shown in table 4.
Drug effect computational methods are as follows:
In above formula, CK represents that clear water contrasts.
Table 4: prevent and kill off winter wheat field Weed-control effect
Interpretation of result: the preventive effect of winter wheat weeds to total weeds prevented and kill off by 40% microemulsion of the present invention, and after medicine, the preventive effect of 30 days is the highest, average decline rate is up to 95.82%, and on average the rate of preventing and kill off is 97.71%.The average decline rate that 30g/L mesosulfuron dispersibles oil-suspending agent and 50g/L florasulam suspending agent is respectively 63.71% and 63.63%, both on average the rate of preventing and kill off be respectively 72.59% and 73.35%.And the average decline rate of 15% Clodinafop-propargyl aqueous emulsion is only 52.78%, on average prevent and kill off rate 66.30%.40% microemulsion is described to the control efficiency of winter wheat weeds apparently higher than each single dose effects such as mesosulfuron, alkynes oxalic acid, florasulams, therefore there is good popularizing application prospect.
3, trial crops and object: supplying to study thing is winter wheat, and subjects is based on the broadleaved herb weeds of Descurainia sophia, clearvers etc. and the grassy weed such as amur foxtail, wild oat.
Test medicine: 61.2% microemulsion (7% mesosulfuron 46% alkynes oxalic acid 8.2% florasulam) (our company's production) in embodiment 6;
Contrast medicament: 30g/L mesosulfuron dispersibles oil-suspending agent (chemical plant, Xiuzhou City, Anhui Province Co., Ltd)
15% Clodinafop-propargyl aqueous emulsion (Zhejiang Yongnong Chemical Industry Co. Ltd.)
50g/L florasulam suspending agent (Jiangsu Repont Pesticide Factory Co., Ltd.)
Spraying time and method: so test dispenser on November 03 in 2013, at that time wheat 3 leaf one heart stage, clearvers 2 ~ 3 leaf one heart stage, Veronica 1 ~ 4 leaf one heart stage, every mu of capable spraying of preparating liquid 45KG, does not occur frosty weather in 1 week after dispenser routinely.
Control time and number of times: investigation weeds radix before dispenser, observe treatment region rice shoot leaf color, upgrowth situation, if any exception and detailed record in after dispenser 3,5 days.Within after dispenser 15 days, 30 days, investigate strain preventive effect and weeds overground part fresh weight respectively.
Investigation method: adopt 5 point samplings, each community Stochastic choice investigates 5 points, often some area 0.25m
2, the strain number of two kinds of main weeds and total weeds is investigated in dispenser respectively after 15 days, investigate strain number and the overground part fresh weight of all kinds of weeds and total weeds simultaneously, calculate decline rate and anti-efficiency respectively by following formula after 30 days, specifically as shown in table 5.
In above formula, CK represents that clear water contrasts.
Table 5: prevent and kill off winter wheat field Weed-control effect
Interpretation of result: the preventive effect of winter wheat weeds to total weeds prevented and kill off by 61.2% suspending agent of the present invention, and after medicine, the preventive effect of 30 days is the highest, average decline rate is up to 97.30%, and on average the rate of preventing and kill off is 98.34%.The average decline rate that 30g/L mesosulfuron dispersibles oil-suspending agent and 50g/L florasulam suspending agent is respectively 66.05% and 63.03%, both on average the rate of preventing and kill off be respectively 72.64% and 72.44%.And the average decline rate of 15% Clodinafop-propargyl aqueous emulsion is only 52.12%, on average prevent and kill off rate 66.36%.61.2% suspending agent is described to the control efficiency of winter wheat weeds apparently higher than each single dose effects such as mesosulfuron, alkynes oxalic acid, florasulams, therefore there is good popularizing application prospect.
4, trial crops and object: supplying to study thing is winter wheat, and subjects is based on the broadleaved herb weeds of Descurainia sophia, clearvers etc. and the grassy weed such as amur foxtail, wild oat.
Test medicine: 42% oil-suspending agent (8.4% mesosulfuron 28% alkynes oxalic acid 5.6% florasulam) (our company's production) in embodiment 10;
Contrast medicament: 30g/L mesosulfuron dispersibles oil-suspending agent (chemical plant, Xiuzhou City, Anhui Province Co., Ltd)
15% Clodinafop-propargyl aqueous emulsion (Zhejiang Yongnong Chemical Industry Co. Ltd.)
50g/L florasulam suspending agent (Jiangsu Repont Pesticide Factory Co., Ltd.)
Spraying time and method: so test dispenser on November 04 in 2013, at that time wheat 3 leaf one heart stage, clearvers 2 ~ 3 leaf one heart stage, Veronica 1 ~ 4 leaf one heart stage, every mu of capable spraying of preparating liquid 45KG, does not occur frosty weather in 1 week after dispenser routinely.
Control time and number of times: investigation weeds radix before dispenser, observe treatment region rice shoot leaf color, upgrowth situation, if any exception and detailed record in after dispenser 3,5 days.Within after dispenser 15 days, 30 days, investigate strain preventive effect and weeds overground part fresh weight respectively.
Investigation method: adopt 5 point samplings, each community Stochastic choice investigates 5 points, often some area 0.25m
2, the strain number of two kinds of main weeds and total weeds is investigated in dispenser respectively after 15 days, investigate strain number and the overground part fresh weight of all kinds of weeds and total weeds simultaneously, calculate decline rate and anti-efficiency respectively by following formula after 30 days, specifically as shown in table 6.
In above formula, CK represents that clear water contrasts.
Table 6: prevent and kill off winter wheat field Weed-control effect
Interpretation of result: 42% oil-suspending agent of the present invention prevents and kill off the preventive effect of winter wheat weeds to total weeds, and after medicine, the preventive effect of 30 days is the highest, average decline rate is up to 97.12%, and on average the rate of preventing and kill off is 98.21%.The average decline rate that 30g/L mesosulfuron dispersibles oil-suspending agent and 50g/L florasulam suspending agent is respectively 63.49% and 61.69%, both on average the rate of preventing and kill off be respectively 73.19% and 71.10%.And the average decline rate of 15% Clodinafop-propargyl aqueous emulsion is only 52.12%, on average prevent and kill off rate 61.78%.42% oil-suspending agent is described to the control efficiency of winter wheat weeds apparently higher than each single dose effects such as mesosulfuron, alkynes oxalic acid, florasulams, therefore there is good popularizing application prospect.
5, trial crops and object: supplying to study thing is winter wheat, and subjects is based on the broadleaved herb weeds of Descurainia sophia, clearvers etc. and the grassy weed such as amur foxtail, wild oat.
Test medicine: 83% wettable powder (8% mesosulfuron 65% alkynes oxalic acid 10% florasulam 3% organosilicon) (our company's production) in embodiment 12;
Contrast medicament: 30g/L mesosulfuron dispersibles oil-suspending agent (chemical plant, Xiuzhou City, Anhui Province Co., Ltd)
15% Clodinafop-propargyl aqueous emulsion (Zhejiang Yongnong Chemical Industry Co. Ltd.)
50g/L florasulam suspending agent (Jiangsu Repont Pesticide Factory Co., Ltd.)
Spraying time and method: so test dispenser on November 09 in 2013, at that time wheat 3 leaf one heart stage, clearvers 2 ~ 3 leaf one heart stage, Veronica 1 ~ 4 leaf one heart stage, every mu of capable spraying of preparating liquid 45KG, does not occur frosty weather in 1 week after dispenser routinely.
Control time and number of times: investigation weeds radix before dispenser, observe treatment region rice shoot leaf color, upgrowth situation, if any exception and detailed record in after dispenser 3,5 days.Within after dispenser 15 days, 30 days, investigate strain preventive effect and weeds overground part fresh weight respectively.
Investigation method: adopt 5 point samplings, each community Stochastic choice investigates 5 points, often some area 0.25m
2, the strain number of two kinds of main weeds and total weeds is investigated in dispenser respectively after 15 days, investigate strain number and the overground part fresh weight of all kinds of weeds and total weeds simultaneously, calculate decline rate and anti-efficiency respectively by following formula after 30 days, specifically as shown in table 7.
In above formula, CK represents that clear water contrasts.
Table 7: prevent and kill off winter wheat field Weed-control effect
Interpretation of result: the preventive effect of winter wheat weeds to total weeds prevented and kill off by 83% wetting powder of the present invention, and after medicine, the preventive effect of 30 days is the highest, average decline rate is up to 98.68%, and on average the rate of preventing and kill off is 99.36%.The average decline rate that 30g/L mesosulfuron dispersibles oil-suspending agent and 50g/L florasulam suspending agent is respectively 62.98% and 64.35%, both on average the rate of preventing and kill off be respectively 73.38% and 72.60%.And the average decline rate of 15% Clodinafop-propargyl aqueous emulsion is only 52.64%, on average prevent and kill off rate 64.49%.83% wetting powder is described to the control efficiency of winter wheat weeds apparently higher than each single dose effects such as mesosulfuron, alkynes oxalic acid, florasulams, therefore there is good popularizing application prospect.
6, trial crops and object: supplying to study thing is winter wheat, and subjects is based on the broadleaved herb weeds of Descurainia sophia, clearvers etc. and the grassy weed such as amur foxtail, wild oat.
Test medicine: 89.6% water dispersible granules (10% mesosulfuron 72% alkynes oxalic acid 7.6% florasulam 5% organosilicon) (our company's production) in embodiment 12;
Contrast medicament: 30g/L mesosulfuron dispersibles oil-suspending agent (chemical plant, Xiuzhou City, Anhui Province Co., Ltd)
15% Clodinafop-propargyl aqueous emulsion (Zhejiang Yongnong Chemical Industry Co. Ltd.)
50g/L florasulam suspending agent (Jiangsu Repont Pesticide Factory Co., Ltd.)
Spraying time and method: so test dispenser on November 12 in 2013, at that time wheat 3 leaf one heart stage, clearvers 2 ~ 3 leaf one heart stage, Veronica 1 ~ 4 leaf one heart stage, every mu of capable spraying of preparating liquid 45KG, does not occur frosty weather in 1 week after dispenser routinely.
Control time and number of times: investigation weeds radix before dispenser, observe treatment region rice shoot leaf color, upgrowth situation, if any exception and detailed record in after dispenser 3,5 days.Within after dispenser 15 days, 30 days, investigate strain preventive effect and weeds overground part fresh weight respectively.
Investigation method: adopt 5 point samplings, each community Stochastic choice investigates 5 points, often some area 0.25m
2, the strain number of two kinds of main weeds and total weeds is investigated in dispenser respectively after 15 days, investigate strain number and the overground part fresh weight of all kinds of weeds and total weeds simultaneously, calculate decline rate and anti-efficiency respectively by following formula after 30 days, specifically as shown in table 8.
In above formula, CK represents that clear water contrasts.
Table 8: prevent and kill off winter wheat field Weed-control effect
Interpretation of result: 89.6% water dispersible granules of the present invention prevents and kill off the preventive effect of winter wheat weeds to total weeds, and after medicine, the preventive effect of 30 days is the highest, average decline rate is up to 100%, and on average the rate of preventing and kill off is 99.43%.The average decline rate that 30g/L mesosulfuron dispersibles oil-suspending agent and 50g/L florasulam suspending agent is respectively 63.42% and 63.75%, both on average the rate of preventing and kill off be respectively 74.04% and 73.00%.And the average decline rate of 15% Clodinafop-propargyl aqueous emulsion is only 53.44%, on average prevent and kill off rate 65.47%.89.6% water dispersible granules is described to the control efficiency of winter wheat weeds apparently higher than each single dose effects such as mesosulfuron, alkynes oxalic acid, florasulams, therefore there is good popularizing application prospect.
Above-mentioned is can understand and apply the invention for ease of those skilled in the art to the description of embodiment.Person skilled in the art obviously easily can make various amendment to these embodiments, and General Principle described herein is applied in other embodiments and need not through performing creative labour.Therefore, the invention is not restricted to embodiment here, those skilled in the art, according to announcement of the present invention, do not depart from improvement that scope makes and amendment all should within protection scope of the present invention.
Claims (6)
1. the herbicide composition for wheat field containing alkynes oxalic acid, it is characterized in that: the effective ingredient of described herbicidal composition is made up of mesosulfuron, alkynes oxalic acid and florasulam, the mass ratio of described mesosulfuron, alkynes oxalic acid and florasulam is 1 ~ 10: 15 ~ 72: 0.5 ~ 12.
2. a kind of herbicide composition for wheat field thing containing alkynes oxalic acid according to claim 1, it is characterized in that: described herbicidal composition also comprises synergist, the quality of described synergist accounts for the 1-5% of herbicidal composition gross mass.
3. Pesticidal combination according to claim 2, is characterized in that: described synergist is organosilicon, cyclohexanedione or pyrrolidones.
4. a kind of herbicide composition for wheat field containing alkynes oxalic acid according to claim 2, is characterized in that: the quality of described isoproturon, flucarbazone, clodinafop-propargyl and synergist is 10:72:7.6:5.
5. a kind of herbicide composition for wheat field containing alkynes oxalic acid according to any one of claim 1-4, is characterized in that: described herbicidal composition also contains agriculturally acceptable surfactant and carrier.
6. a kind of herbicide composition for wheat field containing alkynes oxalic acid according to any one of claim 1-4, is characterized in that: the formulation of described herbicidal composition is aqueous emulsion, microemulsion, suspending agent, oil-suspending agent, wetting powder or water dispersible granules.
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