Background technology
Sulfosulfuron, English common name Sulfosulfuron, chemical name: 1-(4,6-dimethoxy pyridine-2-yl)-3 [(2-ethylsulfonyl-imidazoles [1,2-a] pyridine) sulfonyl] urea.Sulfosulfuron belongs to the sulfonylurea weed killer herbicide, optionally controls the multiple weeds of wheatland, and annual gramineous weed and broad leaved weed are had the effect of well preventing and kill off.
Alkynes grass ester has another name called alkynes oxalic acid, English name: Clodinafop-propargyl, chemical name: R-2-[4-(5-chloro-3-fluoro-2-pyridine oxygen base)-phenoxy group]-propionic acid propargyl ester.Be mainly used in cornfield gramineae weeds such as preventing and kill off wild oat, amur foxtail, oat, perennial ryegrass, rough stalked blue grass, green foxtail.
3.5 hundred million mu of wheat areas are planted throughout the year by China, are only second to paddy rice.From sowing to harvest wheat often suffer from various weeds, mainly A.aequalis, Japan A.aequalis, Wang grass, Polypogon grass and hard grass, bluegrass, candles grass, wild oats, brome, Sonchus year, Peng, Cephalanoplos, chickweed, chickweed cattle, cocklebur, Mak public, Vetch, a small nest dishes, shepherd's purse, Cardamine, speedwell, Noe stork grass.Influenced by the factor such as temperature, rainfall, soil property, weed seed buried depth and the cropping system in soil, wheat weeds group and that quantity takes place is big in interzone, field interblock difference.The chemical control wheat weeds is the most effective means.Wheat weeds often mixes generation at present, but does not also have a kind of weed killer herbicide can solve all problems, and a kind of herbicidal effect of urgent need invention is good, drug cost is low, the weed killer herbicide of safety nuisance free.
Summary of the invention
The object of the present invention is to provide a kind of component reasonable, synergistic effect is remarkable, and herbicidal effect is good, and drug cost is low, to the herbicidal composition of crop safety.
Another object of the present invention is to provide the application of said herbicidal composition in preventing and kill off the wheat paddock weeds.
In order to overcome the defective of existing single preparation, technical scheme of the present invention is to solve like this:
A kind of herbicidal composition that contains Sulfosulfuron and alkynes grass ester, its effective active composition is:
A) first active component is a Sulfosulfuron;
B) second active component is an alkynes grass ester;
The weight ratio of first active component and second active component is that 1:15~10:1 is preferably 1:10~5:1, more preferably 1:5~1:1.
The cumulant of first active component and second active component is 5%~80% of a said composition total weight, is preferably 8%~75%.
The preparation formulation that herbicide composition for wheat field of the present invention can be prepared according to method known in those skilled in the art is water dispersible granules, wetting powder, missible oil or suspending agent.
For water dispersible granules, those skilled in the art are familiar with the use corresponding adjuvants and accomplish the present invention very much.In dispersant such as polycarboxylate, lignosulfonates, the alkylnaphthalene sulfonate one or more; In wetting agent such as alkyl sulfate, alkylsulfonate, the naphthalene sulfonate one or more; In disintegrant such as ammonium sulfate, urea, sucrose, the glucose one or more; In binding agent such as diatomite, corn starch, PVA, carboxymethyl (ethyl) cellulose family one or more; The safener cloquitocet_mexyl; Filler such as diatomite, kaolin, white carbon, fine particle calcium carbonate, talcum powder, attapulgite, potter's clay one or more.
To wetting powder, spendable auxiliary agent has: in dispersant such as polycarboxylate, lignosulfonates, the alkylnaphthalene sulfonate one or more; In wetting agent such as alkyl sulfate, alkylsulfonate, the naphthalene sulfonate one or more; The safener cloquitocet_mexyl; Filler such as ammonium sulfate, urea, sucrose, glucose, diatomite, kaolin, white carbon, fine particle calcium carbonate, talcum powder, attapulgite, potter's clay one or more.
For missible oil, those skilled in the art are familiar with the use corresponding adjuvants and accomplish the present invention very much.Emulsifier such as calcium dodecyl benzene sulfonate (agricultural newborn 500#); Nongru-700 # (common name: alkyl phenol formaldehyde resin polyoxyethylene ether); The newborn 2201# of farming; This dish-60# (common name: Span60); Tween-60 # (common name: the polyoxyethylene sorbitan stearate); TX-10 (common name: octyl phenol polyoxy ethene (10) ether); The newborn 1601# of farming (common name: triphen ethyl-phenol polyoxyethylene polyoxypropylene block polymer); The newborn 600# of farming; The farming newborn 400# in one or more; The safener cloquitocet_mexyl; In solvent such as xylol, toluene, solvent naphtha (S-150, S-180, S-200), toluene, methyl alcohol, dimethyl formamide, N-Methyl pyrrolidone, cyclohexanone, acetone, the dimethyl sulfoxide (DMSO) one or more.
To suspending agent, spendable auxiliary agent has: among dispersant such as polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate (dispersing agent NNO), the TERSPERSE 2020 (U.S. Huntsman Corporation produces, the alkyl naphthalene sulfonic acid salt) one or more; Alkyl phenol formaldehyde resin polyoxyethylene ether), farming breast 2201, this dish-60# (common name: Span60), Tween-60 # (common name: the polyoxyethylene sorbitan stearate), agricultural newborn 1601# (common name: triphen ethyl-phenol polyoxyethylene polyoxypropylene block polymer), among the TERSPERSE 4894 one or more emulsifier such as Nongru-700 # (common name:; Among wetting agent such as alkylphenol-polyethenoxy base ether formaldehyde condensation products sulphate, alkylphenol-polyethenoxy base ether phosphate, phenethyl phenol polyethenoxy base ether phosphate, alkyl sulfate, alkylsulfonate, naphthalene sulfonate, the TERSPERSE 2500 one or more; In thickener such as xanthans, polyvinyl alcohol, bentonite, the aluminium-magnesium silicate one or more; In preservative such as formaldehyde, benzoic acid, the Sodium Benzoate one or more; The safener cloquitocet_mexyl; Antifoaming agent such as organic silicon defoamer; In antifreezing agent such as ethylene glycol, propane diols, glycerine, urea, inorganic salts such as the sodium chloride one or more; Water is deionized water.
But to the dispersed oil suspending agent; Spendable auxiliary agent has: among dispersant such as polycarboxylate, lignosulfonates, alkylnaphthalene sulfonate (dispersing agent NNO), the TERSPERSE 2020 (HUNTSMAN of U.S. Huntsman Corporation produces, the alkyl naphthalene sulfonic acid salt) one or more; Alkyl phenol formaldehyde resin polyoxyethylene ether), farming breast 2201, this dish-60# (common name: sorbitan monostearate), Tween-60 # (common name: the sorbitan monostearate APEO), agricultural newborn 1601# (common name: phenethyl phenol polyoxyethylene poly-oxygen propylene aether), among the TERSPERSE 4894 one or more the serial emulsifier of emulsifier such as BY (castor oil polyoxyethylene ether) (BY-110, BY-125, BY-140), Nongru-700 # (common name:; Among wetting agent such as alkylphenol-polyethenoxy base ether formaldehyde condensation products sulphate, APES phosphate, phenethyl phenol polyethenoxy base ether phosphate, alkyl sulfate, alkylsulfonate, naphthalene sulfonate, the TERSPERSE 2500 one or more; In thickener such as white carbon, polyvinyl alcohol, bentonite, the aluminium-magnesium silicate one or more; In antifreezing agent such as ethylene glycol, propane diols, glycerine, urea, inorganic salts such as the sodium chloride one or more; The safener cloquitocet_mexyl; In dispersion medium such as soybean oil, rapeseed oil, corn oil, methyl oleate, diesel oil, machine oil, the mineral oil one or more.
Alkynes grass ester is mainly used in the control cornfield gramineae weed, and is invalid to broadleaved herb, and used for many years, and some grassy weeds such as bromegrass, barnyard grass grass have been produced resistance.Though Sulfosulfuron can be prevented and treated cornfield gramineae weed and broad leaved weed, high selectivity is also arranged, also there is resistance risk after the listing.The inventor is through a large amount of lab screenings and field control effectiveness test, find that Sulfosulfuron and alkynes grass ester are mixed after, good to wheatland main weeds group preventive effect, have obvious synergistic effect, can reduce use cost, to the crop safety height.Component of the present invention is reasonable, and the activity that preventive effect is superior to each component when using separately has synergistic effect, enlarges the control of weeds spectrum, reduces spraying times, reduces the control cost, and is good to crop safety, meets the security requirement of pesticidal preparations.The present invention has the better prevention effect to all kinds of weeds between wheat paddock.
Embodiment
Explain that through Toxicity Determination Sulfosulfuron and alkynes oxalic acid are mixed the back to the synergistic effects of wheat paddock weeds below.
In order to prevent and kill off the wheat paddock weeds, the inventor has carried out mutual composite synergy research with Sulfosulfuron and alkynes oxalic acid, and concrete grammar is:
Subjects is respectively amur foxtail, the bromegrass of grassy weed, the ox chickweed of broadleaved herb, clearvers.Former medicine is mixed with the test medicine that needs, and test method is with reference to " the agricultural industry criteria NY/T1155.7-2006 of People's Republic of China (PRC) agricultural chemicals indoor bioassay test rule weed killer herbicide the 7th part: the synergy that is mixed is measured ".At first single agent and each Mixed Pharmacy are provided with 5 variable concentrations gradients (on preliminary experiment result's basis, different according to the medicament proportioning, the concentration gradient setting is also different, and the rate of preventing and kill off is set by geometric progression) in 5%~90% scope.If the clear water contrast repeats 4 times.Spray-on process behind the employing seedling is got ready in advance and is supplied examination weeds seedling (be sowed in the test basin alms bowl by 50 weed seeds of every alms bowl, length is to fixed 40 strains of every alms bowl during the phase of 3 leaves by the time); The medicament that dilution is good evenly is sprayed onto on the weeds plant with laryngeal spray; Evenly thoughtfully being as the criterion, after insert the greenhouse normal cultured, handle the preventive effect of calculating each chemicals treatment in back 14 days with ocular estimate; The ED of each medicament is obtained in linear regression analysis between the probit value through preventive effect and the logarithm value of series concentration
50Value with the co-toxicity coefficient (CTC) of the abundant method calculating of Sun Yun mixture, is estimated the activity of confession reagent agent to weeds with this.
The co-toxicity coefficient of complex preparation (CTC)>=120 shows as synergistic effect; CTC≤80 show as antagonism; 80<CTC<120 show as summation action.
Toxicity Determination result shows: Sulfosulfuron and alkynes grass ester is that 1:15~10:1 uses with amur foxtail, bromegrass, ox chickweed, clearvers are had virulence preferably with the weight ratio; Synergistic effect is preferably all arranged; Especially being that 1:10~5:1 synergy is the most remarkable with the weight ratio, is summation action when weight ratio is 1:20 and 15:1.
Below in conjunction with FORMULATION EXAMPLE content of the present invention is described further.
FORMULATION EXAMPLE 1
Take by weighing 72% Sulfosulfuron, 8% alkynes grass ester, 2% TERSPERSE 2700 (polycarboxylate, U.S. Huntsman Corporation produces), 2% dispersing agent NNO (alkylnaphthalene sulfonate formaldehyde condensation products), 1% Nekal BX (nekal), 1% K-12 (lauryl sodium sulfate), 1% carboxymethyl cellulose, 2% cloquitocet_mexyl, diatomite and add to 100% weight portion.The method of the frequent regulation of above-mentioned raw materials water intaking dispersible granule is promptly mixed, ultra micro comminution by gas stream, mixing, granulation step are produced 80% Sulfosulfuron alkynes grass ester water dispersible granules.
FORMULATION EXAMPLE 2
Take by weighing 40% Sulfosulfuron, 10% alkynes grass ester, 4% TERSPERSE 2700,2% dispersing agent NNO, 2% Nekal BX, 2%K-12,3% corn starch, 5% sulphur ammonium, 2.5% cloquitocet_mexyl, attapulgite and add to 100% weight portion.The method of the frequent regulation of above-mentioned raw materials water intaking dispersible granule is promptly mixed, ultra micro comminution by gas stream, mixing, granulation step are produced 50% Sulfosulfuron alkynes grass ester water dispersible granules.
FORMULATION EXAMPLE 3
Take by weighing 40% Sulfosulfuron, 4% alkynes grass ester, 4% calcium lignosulfonate, 3% TERSPERSE 2700,2% Nekal BX, 2%K-12,3% white carbon black, 1% cloquitocet_mexyl, fine particle calcium carbonate adds to 100% weight portion.Above-mentioned raw materials makes 44% Sulfosulfuron alkynes grass ester wetting powder through mixing behind the comminution by gas stream.
FORMULATION EXAMPLE 4
Take by weighing 15% Sulfosulfuron, 15% alkynes grass ester, 5% calcium lignosulfonate, 2% Nekal BX, 2%K-12,5% white carbon black, 4% cloquitocet_mexyl, kaolin and add to 100% weight portion.Above-mentioned raw materials makes 30% Sulfosulfuron alkynes grass ester wetting powder through mixing behind the comminution by gas stream.
FORMULATION EXAMPLE 5
Take by weighing 1.5% Sulfosulfuron, 22.5% alkynes grass ester, 4% agricultural newborn 500#, 2% agricultural newborn 600#, 3% agricultural newborn 2201#, 2% dimethyl sulfoxide (DMSO), 6% cloquitocet_mexyl, xylol and add to 100% weight portion.Above-mentioned raw materials makes 24% Sulfosulfuron alkynes grass emulsifiable concentrate after mix, stirring and dissolving is complete.
FORMULATION EXAMPLE 6
Take by weighing 2% Sulfosulfuron, 20% alkynes grass ester, 5% agricultural newborn 500#, 2% agricultural newborn 400#, 3% Nongru-700 #, 15% N-Methyl pyrrolidone, 5% cloquitocet_mexyl, xylol add to 100% weight portion.Above-mentioned raw materials makes 22% Sulfosulfuron alkynes grass emulsifiable concentrate after mix, stirring and dissolving is complete.
FORMULATION EXAMPLE 7
S-29 Nanjing "four news" (new ideas applied chemistry article company product), 5% cloquitocet_mexyl, deionized water add to 100% weight portion take by weighing 10% Sulfosulfuron, 20% alkynes grass ester, 4% TERSPERSE 4894 (U.S. Huntsman Corporation products), 1.5% TERSPERSE 2500 (U.S. Huntsman Corporation product), 2% TERSPERSE 2020 (U.S. Huntsman Corporation product), 1% aluminium-magnesium silicate, 0.2% xanthans, 5% ethylene glycol, 0.5% formaldehyde, 0.5% silicone defoaming agent (trade name:.Above-mentioned raw materials is through mixing, and high speed shear is disperseed 30min, with making 30% Sulfosulfuron alkynes grass ester suspending agent behind the sand mill sand milling.
FORMULATION EXAMPLE 8
Take by weighing 20% Sulfosulfuron, 4% alkynes grass ester, 5%TERSPERSE 4894,2%TERSPERSE 2500,3%TERSPERSE 2020,0.2% xanthans, 5% propane diols, 0.5% benzoic acid, 0.5% silicone defoaming agent, 1% cloquitocet_mexyl, deionized water and add to 100% weight portion.Above-mentioned raw materials is through mixing, and high speed shear is disperseed 30min, with making 24% Sulfosulfuron alkynes grass ester suspending agent behind the sand mill sand milling.
FORMULATION EXAMPLE 9
Take by weighing 3% Sulfosulfuron, 15% alkynes grass ester, 2%TERSPERSE 2020,4% this dish-60#, 3% Tween-60 #, 4% agricultural newborn 2201#, 3% Nongru-700 #, 1%TERSPERSE 2500,0.5% white carbon, 5% propane diols, 3.8% cloquitocet_mexyl, methyl oleate and add to 100% weight portion.Above-mentioned raw materials is through mixing, and high speed shear is disperseed 30min, but with making 18% Sulfosulfuron alkynes grass ester dispersed oil suspending agent behind the sand mill sand milling.
FORMULATION EXAMPLE 10
Take by weighing 15% Sulfosulfuron, 7.5% alkynes grass ester, 2% dispersing agent NNO, 3% agricultural newborn 2201#, 10% BY-110,1%TERSPERSE 2500,1% aluminium-magnesium silicate, 3% glycerine, 2% cloquitocet_mexyl, soybean oil and add to 100% weight portion.Above-mentioned raw materials is through mixing, and high speed shear is disperseed 30min, but with making 22.5% Sulfosulfuron alkynes grass ester dispersed oil suspending agent behind the sand mill sand milling.
Biological Examples is prevented and kill off wheat paddock weeds field control effectiveness test
The inventor has carried out FORMULATION EXAMPLE 4 (30% Sulfosulfuron alkynes grass ester wetting powder) on December 21st, 2011 and has prevented and kill off wheat paddock weeds field control effectiveness test in capital, Fengyang County town; Experimental field pH value 6.5, fertility is better-than-average, and soil is paddy soil; Soil property is a yellowish soil, and preceding stubble is a paddy rice.Sowing on October 20th, 2011, sowing quantity is 20kg/667 ㎡, and wheat breed is tobacco grower 19, and seeding method is drilling.Tiller for wheat 2-3 during test, tiller broad leaved weed 3-5 sheet leaves such as shepherd's purse, clearvers for gramineous grass 1-2 such as amur foxtail, wild oat.Test medicine and dosage see table 5 for details.With the spray clear water is contrast (CK).Repeat for 4 times, district's group is arranged at random, sub-district area 20 ㎡.Adopt the electronic knapsack sprayer of mark standing grain board to carry out the cauline leaf spraying, use amount of liquid medicine to be 30kg/667 ㎡.
Investigation and statistical method:
Behind the medicine 7,14,21d observes the growing state of wheat seedling in each sub-district.30d behind medicine, every sub-district is got 4 points at random, every 0.25 ㎡, weeds strain number in the investigation record point, and calculate preventive effect.
Preventive effect (%)=(blank district number of weeds-treatment region number of weeds)/blank district number of weeds * 100.
Result of the test and analysis: behind the medicine 7,14,21d observes, and all do not find poisoning phenomenons such as the dead seedling of wheat, blade yellow, growth are stagnated in each sub-district.30% Sulfosulfuron alkynes grass ester wetting powder is pressed 10g/667 ㎡, 9g/667 ㎡, 8g/667 ㎡ consumption; Carrying out the cauline leaf spraying handles; Behind medicine, wheat paddock grassy weed and broad leaved weed all there was good preventive effect in 30 days; Obviously be superior to the preventive effect (seeing table 5) of 75% Sulfosulfuron water dispersible granules 3g/667 ㎡, 15% alkynes grass ester 30g/667 ㎡ wetting powder, suggestion consumption 8-10g/667 ㎡ is advisable.
Result of the test has improved the preventive effect to wheat weeds after showing that Sulfosulfuron and alkynes grass ester are mixed, and has obvious synergistic effect; Overcome alkynes grass ester and killed the single defective of grass spectrum; Saved drug cost simultaneously, and, therefore had wide practical use in the production wheat safety.
In sum, composition of the present invention is to adopt two kinds of active component compound schemes, and its activity and herbicidal effect are not the simple superposition of each composition activity; Compare with existing single preparation, except that having significant herbicidal effect, and significant synergistic effect is arranged; The preparation less residue; Pollution-free to crop, safety is good, meets the security requirement of pesticidal preparations.