CN104126602A - Dispersible oil suspending agent containing pymetrozine and dinotefuran - Google Patents
Dispersible oil suspending agent containing pymetrozine and dinotefuran Download PDFInfo
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Abstract
The invention discloses a dispersible oil suspending agent containing pymetrozine and dinotefuran. The dispersible oil suspending agent consists of the following components in percentage by weight: 5-60 percent of pymetrozine, 5-50 percent of dinotefuran, 5-25 percent of an emulsifier, 2-15 percent of a dispersing agent, 1-8 percent of a wetting agent, 1-7 percent of a thickening agent, 1-6 percent of a stabilizing agent and the rest of a dispersing medium. A preparation method for the dispersible oil suspending agent comprises the steps of adding the emulsifier, the dispersing agent, the wetting agent, the stabilizing agent and the dispersing medium into a reaction kettle for uniform mixing and dispersing; adding the thickening agent, pymetrozine and dinotefuran under a high-speed shearing state, and grinding the materials until the particle size is less than 5 microns to obtain the dispersible oil suspending agent containing pymetrozine and dinotefuran. The technical difficulty in preparation of the dispersible oil suspending agent containing pymetrozine and dinotefuran is solved, and the dosage form of the conventional active insecticidal components is enriched; the dispersible oil suspending agent has the advantages of environment friendliness, good medicine effect, rainwater scouring resistance, long lasting period and safety to crops, and has a good prevention effect on piercing-sucking mouthparts pests.
Description
Technical field
The invention belongs to technical field of compounded pesticide, relate to a kind of agricultural insecticidal composite, be specifically related to a kind of oil-suspending agent that dispersibles that contains pymetrozine and MTI-446, its active insecticidal components comprises the first active component pymetrozine and the second active component MTI-446.The invention still further relates to this and dispersibled preparation method and the application of oil-suspending agent.
Background technology
Pymetrozine, English common name: Pymetrozine, chemical name: 4,5-dihydro-6-methyl-4-(3-pyridine methylene is amino)-1,2,4-3 (2H)-one.Pymetrozine belongs to Triazinone insecticide, is a kind of brand-new non-insects agent of killing livestock, and insect is had to action of contace poison, also has systemic activity simultaneously, sucking insect one touches pymetrozine and almost produces immediately lancet blocking effect, stops at once taking food, and final hungry lethal.Pymetrozine shows excellent control efficiency to the sucking pest of various crop.
MTI-446, English common name: Dinotefuran, chemical name: (RS)-1-methyl-2-nitro-3-(tetrahydrochysene-3-furfuryl) guanidine.MTI-446 is nicotinic insecticide, have tag, stomach toxicity and systemic action, there is the features such as quick-acting height, the lasting period is long, insecticidal spectrum is wide, sucking insect is had to excellent preventive effect.
Dispersible oil-suspending agent and refer to and take oil as dispersion medium, by pesticide original medicine and various auxiliary agent (emulsifier, functional aid, the inert filler etc.) high dispersive obtaining through soybean dietary fiber, stable pesticidal preparations.Oils comprises vegetable oil or mineral oil, methyl esters oil.Dispersible oil-suspending agent dilute with water and be sprayed at easy one deck medicine film that forms on plant, because plant surface has wax coat, according to similar compatibility principle, infiltration conductivity is strong, and tackness is good, resistance of rainwater washing against, drug effect performance is better, and utilization rate of active components is high, and formulation environmental protection.
Although dispersible oil-suspending agent, have above-mentioned plurality of advantages, the preparation technique of this formulation requires high, is difficult to preparation, registers this formulation Pesticidal products mostly at present be corn, wheat paddock weed killer herbicide in the Ministry of Agriculture, also immature for the technology of Pesticidal products.Through retrieval, prior art does not also have pymetrozine and the composite bibliographical information that dispersibles oil-suspending agent that is processed into of MTI-446, for successfully develop pymetrozine and MTI-446 composite dispersible oil-suspending agent, inventor has carried out repeatedly investigative test.In addition, inventor also sums up the problem should be noted that in test and overcome, these problems are mainly: (1) emulsifying dispersivity is poor, especially a lot of local with underground water or motor-pumped well water, water temperature is lower, and hardness is larger, easily at the water surface, forms one deck ointment, the shower nozzle that results in blockage, also easily causes poisoning; (2) analyse Chuck Steak, layering is serious; (3) easily livering in process of lapping; (4) easy retrogradation or the knot end.
Summary of the invention
For overcoming, dispersible the above-mentioned technical problem running in oil-suspending agent process for preparation, it is effective active insecticidal components that the present invention selects pymetrozine and MTI-446, by selecting suitable auxiliary agent and processing method, successfully made a kind of oil-suspending agent that dispersibles that contains pymetrozine and MTI-446.This dispersibles oil-suspending agent and has environmental protection, good drug efficacy, resistance of rainwater washing against, lasting period length, the feature to crop safety, and sucking pest plant hopper, aphid, trialeurodes vaporariorum, scale insect, thrips etc. have been shown to good preventive effect.
For achieving the above object, the technical scheme that the present invention takes is:
The oil-suspending agent that dispersibles that contains pymetrozine and MTI-446, is comprised of the component of following percentage by weight: pymetrozine 5～60%, MTI-446 5～50%, emulsifier 5～25%, dispersant 2～15%, wetting agent 1～8%, thickener 1～7%, stabilizing agent 1～6%, surplus are dispersion medium.
Described emulsifier is selected from castor oil polyoxyethylene ether series Emulsifier BY-110, BY-125, BY-140, one or more in calcium dodecyl benzene sulfonate, fatty alcohol-polyoxyethylene ether, Nongru-700 #, agriculture breast 2201, agriculture breast 1601#, this dish-60#, Tween-60 #, TERSPERSE4894.
Described dispersant is selected from one or more in polycarboxylate, lignosulfonates, EO-PO block copolymer, phosphate and its esters, Sulfonates, alkylnaphthalene sulfonate.
Described wetting agent is selected from one or more in alkylphenol-polyethenoxy base ether formaldehyde condensation products sulphate, alkylphenol polyoxyethylene phosphate, phenethyl phenol polyethenoxy base ether phosphate, alkyl sulfate, alkylsulfonate, naphthalene sulfonate, TERSPERSE2500.
Described thickener is selected from one or more in white carbon, polyvinyl alcohol, organobentonite, attapulgite, aluminium-magnesium silicate.
Described stabilizing agent is selected from one or more in organic acid, organic base, ester class, alcohols, antioxidant, epoxychloropropane, tall oil.
Described dispersion medium is selected from one or more in soybean oil, rapeseed oil, corn oil, castor oil, epoxidized soybean oil, methyl oleate and esterification oils, diesel oil, machine oil, mineral oil and esters solvent.
Further, the compound method that dispersibles oil-suspending agent that contains pymetrozine and MTI-446 is, first emulsifier, dispersant, wetting agent, stabilizing agent, dispersion medium added to reactor, mixes, is uniformly dispersed; Under high speed shear state, add thickener, pymetrozine and MTI-446, under zirconium pearl abrasive media, carry out sand milling, be ground to below particle diameter 5 μ m, make the oil-suspending agent that dispersibles that contains pymetrozine and MTI-446.
What further, contain pymetrozine and MTI-446 dispersibles the application of oil-suspending agent on control crops sucking pest plant hopper, aphid, trialeurodes vaporariorum, scale insect, thrips.
As technical scheme preferably, what contain pymetrozine and MTI-446 dispersibles the application of oil-suspending agent on control apple yellow aphid, water rice hopper.
Embodiment
In order to make object of the present invention, technical scheme and advantage (beneficial effect) clearer, below in conjunction with embodiment, the present invention is further elaborated.
(1) preparation is prepared part
First to pymetrozine and MTI-446 composition, preparation dispersibles oil-suspending agent and describes.It should be noted that, the percentage in following embodiment ownership agent prescription is all weight percentage.
To one skilled in the art, the oil-suspending agent that dispersibles that preparation contains pymetrozine and MTI-446, except containing active ingredient pymetrozine and MTI-446, also selects multiple auxiliary agent.Spendable auxiliary agent has:
Emulsifier emulsifier (BY-110 as serial in BY (castor oil polyoxyethylene ether), BY-125, BY-140), calcium dodecyl benzene sulfonate, fatty alcohol-polyoxyethylene ether, Nongru-700 # (common name: alkyl phenol formaldehyde resin polyoxyethylene ether), agriculture breast 2201, this dish-60# (common name: sorbitan monostearate), Tween-60 # (common name: sorbitan monostearate APEO), agriculture breast 1601# (common name: phenethyl phenol polyoxyethylene poly-oxygen propylene aether), one or more in TERSPERSE4894 (U.S. Huntsman Corporation product).
Dispersant as in polycarboxylate, lignosulfonates, EO-PO block copolymer (polyoxyethylene polyoxypropylene block copolymer), phosphate and its esters, Sulfonates, alkylnaphthalene sulfonate (dispersing agent NNO), TERSPERSE2020 (U.S. Huntsman Corporation produces, alkyl naphthalene sulfonic acid salt) one or more.
Wetting agent as in alkylphenol-polyethenoxy base ether formaldehyde condensation products sulphate, alkylphenol polyoxyethylene phosphate, phenethyl phenol polyethenoxy base ether phosphate, alkyl sulfate, alkylsulfonate, naphthalene sulfonate, TERSPERSE2500 (U.S. Huntsman Corporation product) one or more.
Thickener as in gas-phase silica, polyvinyl alcohol, organobentonite, attapulgite, aluminium-magnesium silicate one or more.
Stabilizing agent as in organic acid, organic base, ester class, alcohols, antioxidant, epoxychloropropane, tall oil one or more.
Dispersion medium is as soybean oil, rapeseed oil, cottonseed oil, corn oil, castor oil, palm oil, epoxidized soybean oil, methyl oleate and esterification oils thereof, diesel oil, machine oil, mineral oil, and esters solvent as in repefral, dibutyl phthalate, ethyl acetate, methyl benzoate one or more.
FORMULATION EXAMPLE 1
Take 50 grams of pymetrozines, 500 grams of MTI-446,30 grams of fatty alcohol-polyoxyethylene ether, 50 grams of TERSPERSE2020,60 grams of calcium dodecyl benzene sulfonates, 30 grams of castor oil polyoxyethylene ether BY-110,30 grams of Tween-60 #, 10 grams of aluminium-magnesium silicates, 10 grams of tall oils, 230 grams of epoxidized soybean oils.
First to reactor, add 30 grams of fatty alcohol-polyoxyethylene ether, 50 grams of TERSPERSE2020,60 grams of calcium dodecyl benzene sulfonates, 30 grams of castor oil polyoxyethylene ether BY-110,30 grams of Tween-60 #, 10 grams of tall oils and 230 grams of epoxidized soybean oils, mix, be uniformly dispersed; Under high speed shear state, add 10 grams of aluminium-magnesium silicates, 50 grams of pymetrozines and 500 grams of MTI-446, under zirconium pearl abrasive media, carry out sand milling, with sand mill, be ground to below particle diameter 5 μ m, can make active constituent content is that 55% pymetrozine MTI-446 dispersibles oil-suspending agent.
FORMULATION EXAMPLE 2
Take 100 grams of pymetrozines, 300 grams of MTI-446,30 grams of alkylphenol polyoxyethylene phosphates, 50 grams of polyoxyethylene polyoxypropylene block copolymers, 40 grams of calcium dodecyl benzene sulfonates, 30 grams of Nongru-700 #, 20 grams of castor oil polyoxyethylene ether BY-125,10 grams of gas-phase silicas, 10 grams of organobentonites, 20 grams of BHT (BHTs, antioxidant), 390 grams of corn oils.
First to reactor, add 30 grams of alkylphenol polyoxyethylene phosphates, 50 grams of polyoxyethylene polyoxypropylene block copolymers, 40 grams of calcium dodecyl benzene sulfonates, 30 grams of Nongru-700 #, 20 grams of castor oil polyoxyethylene ether BY-125,20 grams of BHT (2,6-BHT, antioxidant), 390 grams of corn oils, mix, are uniformly dispersed; Under high speed shear state, add 10 grams of gas-phase silicas, 10 grams of organobentonites, 100 grams of pymetrozines and 300 grams of MTI-446, under zirconium pearl abrasive media, carry out sand milling, with sand mill, be ground to below particle diameter 5 μ m, can make active constituent content is that 40% pymetrozine MTI-446 dispersibles oil-suspending agent.
FORMULATION EXAMPLE 3
Take 200 grams of pymetrozines, 200 grams of MTI-446,30 grams of fatty alcohol-polyoxyethylene ether, 30 grams of dispersing agent NNOs, 60 grams of these dish-60#, 30 grams of agriculture breast 2201#, 30 grams of polyvinyl alcohol, 20 grams of BHT (2,6-BHT, antioxidant), 20 grams of epoxychloropropane, 380 grams of methyl oleates.
First to reactor, add 30 grams of fatty alcohol-polyoxyethylene ether, 30 grams of dispersing agent NNOs, 60 grams of these dish-60#, 30 grams of agriculture breast 2201#, 20 grams of BHT (BHT, antioxidant), 20 grams of epoxychloropropane, 380 grams of methyl oleates, mix, are uniformly dispersed; Under high speed shear state, add 30 grams of polyvinyl alcohol, 200 grams of pymetrozines and 200 grams of MTI-446, under zirconium pearl abrasive media, carry out sand milling, with sand mill, be ground to below particle diameter 5 μ m, can make active constituent content is that 40% pymetrozine MTI-446 dispersibles oil-suspending agent.
FORMULATION EXAMPLE 4
Take 300 grams of pymetrozines, 100 grams of MTI-446,50 grams of these dish-60#, 50 grams of polyoxyethylene polyoxypropylene block copolymers, 50 grams of calcium dodecyl benzene sulfonates, 50 grams of castor oil polyoxyethylene ether BY-140,10 grams of polyvinyl alcohol, 10 grams of organobentonites, 20 grams of BHT (BHT, antioxidant), 10 grams of tall oils, 370 grams of epoxidized soybean oils.
First to reactor, add 50 grams of these dish-60#, 50 grams of polyoxyethylene polyoxypropylene block copolymers, 50 grams of calcium dodecyl benzene sulfonates, 50 grams of castor oil polyoxyethylene ether BY-140,20 grams of BHT (BHTs, antioxidant), 10 grams of tall oils, 370 grams of epoxidized soybean oils, mix, are uniformly dispersed; Under high speed shear state, add 10 grams of polyvinyl alcohol, 10 grams of organobentonites, 300 grams of pymetrozines and 100 grams of MTI-446, under zirconium pearl abrasive media, carry out sand milling, with sand mill, be ground to below particle diameter 5 μ m, can make active constituent content is that 40% pymetrozine MTI-446 dispersibles oil-suspending agent.
FORMULATION EXAMPLE 5
Take 400 grams of pymetrozines, 100 grams of MTI-446,30 grams of fatty alcohol-polyoxyethylene ether, 50 grams of TERSPERSE2020,50 grams of calcium dodecyl benzene sulfonates, 20 grams of agriculture breast 1601#, 10 grams of gas-phase silicas, 20 grams of TERSPERSE2500,320 grams of castor oil.
First to reactor, add 30 grams of fatty alcohol-polyoxyethylene ether, 50 grams of TERSPERSE2020,50 grams of calcium dodecyl benzene sulfonates, 20 grams of agriculture breast 1601#, 20 grams of TERSPERSE2500,320 grams of castor oil, mix, are uniformly dispersed; Under high speed shear state, add 10 grams of gas-phase silicas, 400 grams of pymetrozines and 100 grams of MTI-446, under zirconium pearl abrasive media, carry out sand milling, with sand mill, be ground to below particle diameter 5 μ m, can make active constituent content is that 50% pymetrozine MTI-446 dispersibles oil-suspending agent.
FORMULATION EXAMPLE 6
Take 500 grams of pymetrozines, 100 grams of MTI-446,30 grams of alkylphenol polyoxyethylene phosphates, 50 grams of polyoxyethylene polyoxypropylene block copolymers, 40 grams of calcium dodecyl benzene sulfonates, 40 grams of agriculture breast 2201#, 20 grams of castor oil polyoxyethylene ether BY-140,10 grams of aluminium-magnesium silicates, 10 grams of organobentonites, 20 grams of BHT (2,6-BHT, antioxidant), 20 grams of ethylene glycol, 160 grams of methyl oleates.
First to reactor, add 30 grams of alkylphenol polyoxyethylene phosphates, 50 grams of polyoxyethylene polyoxypropylene block copolymers, 40 grams of calcium dodecyl benzene sulfonates, 40 grams of agriculture breast 2201#, 20 grams of castor oil polyoxyethylene ether BY-140,20 grams of BHT (2,6-BHT, antioxidant), 20 grams of ethylene glycol, 160 grams of methyl oleates, mix, are uniformly dispersed; Under high speed shear state, add 10 grams of aluminium-magnesium silicates, 10 grams of organobentonites, 500 grams of pymetrozines and 100 grams of MTI-446, under zirconium pearl abrasive media, carry out sand milling, with sand mill, be ground to below particle diameter 5 μ m, can make active constituent content is that 60% pymetrozine MTI-446 dispersibles oil-suspending agent.
FORMULATION EXAMPLE 7
Take 600 grams of pymetrozines, 50 grams of MTI-446,30 grams of Tween-60 #, 30 grams of dispersing agent NNOs, 50 grams of these dish-60#, 30 grams of agriculture breast 2201#, 20 grams of attapulgites, 20 grams of BHT (BHTs, antioxidant), 20 grams of epoxychloropropane, 30 grams of propane diols, 120 grams of palm oils.
First to reactor, add 30 grams of Tween-60 #, 30 grams of dispersing agent NNOs, 50 grams of these dish-60#, 30 grams of agriculture breast 2201#, 20 grams of BHT (BHT, antioxidant), 20 grams of epoxychloropropane, 30 grams of propane diols, 120 grams of palm oils, mix, are uniformly dispersed; Under high speed shear state, add 20 grams of attapulgites, 600 grams of pymetrozines and 50 grams of MTI-446, under zirconium pearl abrasive media, carry out sand milling, with sand mill, be ground to below particle diameter 5 μ m, can make active constituent content is that 65% pymetrozine MTI-446 dispersibles oil-suspending agent.
FORMULATION EXAMPLE 8
Take 50 grams of pymetrozines, 50 grams of MTI-446,30 grams of fatty alcohol-polyoxyethylene ether, 50 grams of polyoxyethylene polyoxypropylene block copolymers, 60 grams of calcium dodecyl benzene sulfonates 6%, 50 grams of castor oil polyoxyethylene ether BY-140#, 10 grams of gas-phase silicas, 20 grams of organobentonites, 20 grams of BHT (2,6-BHT, antioxidant), 660 grams of ethyl acetate.
First to reactor, add 30 grams of fatty alcohol-polyoxyethylene ether, 50 grams of polyoxyethylene polyoxypropylene block copolymers, 60 grams of calcium dodecyl benzene sulfonates 6%, 50 grams of castor oil polyoxyethylene ether BY-140#, 20 grams of BHT (BHT, antioxidant), 660 grams of ethyl acetate, mix, are uniformly dispersed; Under high speed shear state, add 10 grams of gas-phase silicas, 20 grams of organobentonites, 50 grams of pymetrozines and 50 grams of MTI-446, under zirconium pearl abrasive media, carry out sand milling, with sand mill, be ground to below particle diameter 5 μ m, can make active constituent content is that 10% pymetrozine MTI-446 dispersibles oil-suspending agent.
Adopt the preparation of such scheme preparation, accelerate the test of heat storage property, active ingredient is not decomposed, pymetrozine suspension rate≤95%, MTI-446 suspension rate≤93%.
(2) biologicall test part
Biologicall test embodiment 1
(1) the composite synergism test to brown plant-hopper of pymetrozine and MTI-446
In order to prevent and treat the plant hopper in agricultural production, inventor has carried out mutual composite synergy research with pymetrozine and MTI-446.It is tested object that test adopts Brown Planthopper, and concrete grammar is:
Brown plant-hopper formal name used at school Nilaparvata lugens, Homoptera, Delphacidae.Former medicine is mixed with to the test medicine (formulation is for dispersibling oil-suspending agent) needing, test method is with reference to < < People's Republic of China's agricultural industry criteria NY/T1154.7-2006 > >.
First single dose and each Mixed Pharmacy are arranged to 5 variable concentrations gradients (on the basis of preliminary experiment result, examination worm lethality is set by geometric progression in 5%～90% scope).Examination worm rice fulgorid is the brown planthopper ovum that picks up from field,, with rice seedlings, raises for 3 generations in the greenhouse in, select uniformity 3 age nymph, the culture dish of access storing rice seedling diameter 12cm, every ware connects and anaesthetizes 30 of nymphs, every processing connects 4 culture dishes.With potter spray tower, under 50PSI pressure, spray, spray a ware at every turn, every ware spraying liquid 3ml, after insect revives, puts into 12H/12H illumination box by the culture dish of processing and cultivates, and within 72 hours, checks dead borer population, calculates lethality.Blank spray equivalent clear water.
By the linear regression analysis between the probit value of lethality and the logarithm value of series concentration, obtain the LC50 value of each medicament, by the abundant method of Sun Yun, calculate the co-toxicity coefficient (CTC) of mixture, with this, evaluate the activity of reagent agent to examination worm.
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.The composite Toxicity Determination to brown plant-hopper of pymetrozine and MTI-446 the results are shown in Table 1.
Table 1 pymetrozine and the Toxicity Determination of MTI-446 combination to brown plant-hopper
Toxicity Determination result shows: pymetrozine is mixed into and dispersibles oil-suspending agent Brown Planthopper is had to good virulence with percentage by weight 5～50% with percentage by weight 5～60% and MTI-446, all has significant synergistic effect.
(2) the composite synergism test to apple yellow aphid of pymetrozine and MTI-446
In order to prevent and treat the aphid in agricultural production, inventor has carried out mutual composite synergy research with pymetrozine and MTI-446.It is tested object that test adopts apple yellow aphid, and concrete grammar is:
Apple yellow aphid (Aphis pomi DeGeer), has another name called spiraea aphid, belongs to Homoptera, Aphidiadae.Former medicine is mixed with to the test medicine (formulation is for dispersibling oil-suspending agent) needing, test method is with reference to the agricultural industry criteria NY/T1154.6-2006 > > of the < < People's Republic of China (PRC).
First single dose and each Mixed Pharmacy are arranged to 5 variable concentrations gradients (aphid lethality is set by geometric progression in 5%～90% scope).Examination worm is the aphid of picking up from field, in laboratory, select the aphid of uniformity, put into blade-carrying culture dish, every ware 40 cephalont, 4 culture dishes of every processing, repeat 3 times, with potter spray tower, under 50PSI pressure, spray, spray a ware at every turn, every ware spraying liquid 3ml, then the culture dish of processing is put into 12H/12H illumination box and cultivate, within 72 hours, check dead borer population, calculate lethality.Blank spray equivalent clear water.
By the linear regression analysis between the probit value of lethality and the logarithm value of series concentration, obtain the LC50 value of each medicament, by the abundant method of Sun Yun, calculate the co-toxicity coefficient (CTC) of mixture, with this, evaluate the activity of reagent agent to examination worm.
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.Pymetrozine and MTI-446 composite to apple yellow aphid Toxicity Determination the results are shown in Table 2.
Table 2 pymetrozine and the Toxicity Determination of MTI-446 combination to apple yellow aphid
Toxicity Determination result shows: pymetrozine is mixed into and dispersibles oil-suspending agent apple yellow aphid is had to good virulence with percentage by weight 5～50% with percentage by weight 5～60% and MTI-446, all has significant synergistic effect.
Biologicall test embodiment 3
Prevent and treat rice hoppers field trial.
Inventor has carried out formulation examples 4 (40% pymetrozine MTI-446 dispersibles oil-suspending agent) control rice fulgorid field control effectiveness test on April 20th, 2014 at Beihai, Guangxi Hepu County, has verified that this medicament is to the control efficiency of rice fulgorid and the safety to paddy rice.Trial crops is paddy rice, and controlling object is brown planthopper (Nilaparvata lugens).Test medicine and dosage refer to table 3.The cultivation condition of each community, water and fertilizer management uniformity.By amount of liquid medicine, be 45kg/667 ㎡, adopt manual sprayer evenly to spray, require each community rice leaf positive and negative even medicine.Separately establish blank, every processing repeats for 4 times, every community area 50 ㎡, and Gong20Ge community, random district group is arranged.Investigation radix before medicine, after medicine, 1,7 day investigation preventive effect is observed paddy growth situation simultaneously, and visual test medicament has or not poisoning to produce to paddy rice.
Investigation statistics method
Take the random sampling of balance-jump formula, every community 10 points, 2 clumps every (totally 20 clumps), record rice fulgorid (brown planthopper) borer population by basin bat method, by the borer population calculation correction preventive effect before medicine, after medicine.
Control efficiency (%)=[1-(borer population after the front borer population * treatment region medicine of check plot medicine)/(the front borer population of borer population * treatment region medicine after the medicine of check plot)] * 100
Table 3 is prevented and treated rice hoppers field test results
Result of the test shows, 40% pymetrozine MTI-446 dispersibles 3000 times of oil-suspending agents, rice fulgorid is had to more significant control efficiency, after medicine, the preventive effect of 1,7 day is respectively 95.3%, 96.8%, be better than the preventive effect under 40% pymetrozine MTI-446 suspending agent same dose, also be obviously better than 1500 times of preventive effects (table 3) to rice fulgorid of 1500 times of 25% pymetrozine suspension agents, 20% MTI-446 soluble granule, show obvious synergistic effect.
Security survey, duration of test is observed, and all reagent agents, to paddy growth safety, occur without poisoning phenomenon.
Result of the test shows, composite the making of pymetrozine and MTI-446 dispersibles oil-suspending agent, obviously improved the control efficiency to rice fulgorid, reduced dosage and drug cost, to paddy growth safety, is the desirable medicament of control rice fulgorid.
Claims (10)
1. the oil-suspending agent that dispersibles that contains pymetrozine and MTI-446, it is characterized in that, described in dispersible oil-suspending agent and formed by the component of following percentage by weight: pymetrozine 5～60%, MTI-446 5～50%, emulsifier 5～25%, dispersant 2～15%, wetting agent 1～8%, thickener 1～7%, stabilizing agent 1～6%, surplus are dispersion medium.
2. the oil-suspending agent that dispersibles that contains pymetrozine and MTI-446 according to claim 1, it is characterized in that, described emulsifier is selected from castor oil polyoxyethylene ether series emulsifier, one or more in calcium dodecyl benzene sulfonate, fatty alcohol-polyoxyethylene ether, Nongru-700 #, agriculture breast 2201, agriculture breast 1601#, this dish-60#, Tween-60 #, TERSPERSE4894.
3. the oil-suspending agent that dispersibles that contains pymetrozine and MTI-446 according to claim 1, it is characterized in that, described dispersant is selected from one or more in polycarboxylate, lignosulfonates, EO-PO block copolymer, phosphate and its esters, Sulfonates, alkylnaphthalene sulfonate.
4. the oil-suspending agent that dispersibles that contains pymetrozine and MTI-446 according to claim 1, it is characterized in that, described wetting agent is selected from one or more in alkylphenol-polyethenoxy base ether formaldehyde condensation products sulphate, alkylphenol polyoxyethylene phosphate, phenethyl phenol polyethenoxy base ether phosphate, alkyl sulfate, alkylsulfonate, naphthalene sulfonate, TERSPERSE2500.
5. the oil-suspending agent that dispersibles that contains pymetrozine and MTI-446 according to claim 1, is characterized in that, described thickener is selected from one or more in white carbon, polyvinyl alcohol, organobentonite, attapulgite, aluminium-magnesium silicate.
6. the oil-suspending agent that dispersibles that contains pymetrozine and MTI-446 according to claim 1, is characterized in that, described stabilizing agent is selected from one or more in organic acid, organic base, ester class, alcohols, antioxidant, epoxychloropropane, tall oil.
7. the oil-suspending agent that dispersibles that contains pymetrozine and MTI-446 according to claim 1, it is characterized in that, described dispersion medium is selected from one or more in soybean oil, rapeseed oil, corn oil, castor oil, epoxidized soybean oil, methyl oleate and esterification oils, diesel oil, machine oil, mineral oil and esters solvent.
8. the compound method that dispersibles oil-suspending agent according to claim 1, is characterized in that, first emulsifier, dispersant, wetting agent, stabilizing agent, dispersion medium is added to reactor, mixes, is uniformly dispersed; Under high speed shear state, add thickener, pymetrozine and MTI-446, under zirconium pearl abrasive media, carry out sand milling, be ground to below particle diameter 5 μ m, make the oil-suspending agent that dispersibles that contains pymetrozine and MTI-446.
9. the oil-suspending agent that dispersibles according to claim 1 is in the application preventing and treating on crops sucking pest plant hopper, aphid, trialeurodes vaporariorum, scale insect, thrips.
10. the oil-suspending agent that dispersibles according to claim 9 is in the application preventing and treating on apple yellow aphid, water rice hopper.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN104970037A (en) * | 2015-08-01 | 2015-10-14 | 华中农业大学 | Insecticide compositioncontainingpymetrozine and dinotefuran |
| CN105076186A (en) * | 2015-09-09 | 2015-11-25 | 青岛科技大学 | Pesticidal composition containing pymetrozine sodium dodecyl benzene sulfonate and dinotefuran and application thereof |
| CN105685051A (en) * | 2016-04-20 | 2016-06-22 | 陕西上格之路生物科学有限公司 | Dispersible oil suspension agent with methoxyfenozide |
| CN106509000A (en) * | 2016-12-02 | 2017-03-22 | 安徽科立华化工有限公司 | Insecticidal composition containing pymetrozine and dinotefuran as well as preparation method and application of insecticidal composition |
| CN110946150A (en) * | 2019-12-27 | 2020-04-03 | 武汉市拜乐卫生科技有限公司 | Compound mosquito killing oil suspension and preparation method thereof |
| WO2020078145A1 (en) * | 2018-10-15 | 2020-04-23 | 深圳诺普信农化股份有限公司 | Dinotefuran oil-based suspension concentrate and preparation method therefor |
| CN112931519A (en) * | 2021-02-03 | 2021-06-11 | 天津市汉邦植物保护剂有限责任公司 | Dispersible oil suspending agent for preventing and treating insect pests and preparation method and application thereof |
| CN115553288A (en) * | 2022-10-14 | 2023-01-03 | 南京太化化工有限公司 | Dinotefuran dispersible oil suspending agent and preparation process thereof |
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Cited By (10)
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|---|---|---|---|---|
| CN104855412A (en) * | 2015-05-26 | 2015-08-26 | 陕西上格之路生物科学有限公司 | Dispersible oil suspending agent containing spirotetramat and dinotefuran |
| CN104970037A (en) * | 2015-08-01 | 2015-10-14 | 华中农业大学 | Insecticide compositioncontainingpymetrozine and dinotefuran |
| CN105076186A (en) * | 2015-09-09 | 2015-11-25 | 青岛科技大学 | Pesticidal composition containing pymetrozine sodium dodecyl benzene sulfonate and dinotefuran and application thereof |
| CN105685051A (en) * | 2016-04-20 | 2016-06-22 | 陕西上格之路生物科学有限公司 | Dispersible oil suspension agent with methoxyfenozide |
| CN106509000A (en) * | 2016-12-02 | 2017-03-22 | 安徽科立华化工有限公司 | Insecticidal composition containing pymetrozine and dinotefuran as well as preparation method and application of insecticidal composition |
| WO2020078145A1 (en) * | 2018-10-15 | 2020-04-23 | 深圳诺普信农化股份有限公司 | Dinotefuran oil-based suspension concentrate and preparation method therefor |
| CN110946150A (en) * | 2019-12-27 | 2020-04-03 | 武汉市拜乐卫生科技有限公司 | Compound mosquito killing oil suspension and preparation method thereof |
| CN110946150B (en) * | 2019-12-27 | 2021-08-27 | 武汉市拜乐卫生科技有限公司 | Compound mosquito killing oil suspension and preparation method thereof |
| CN112931519A (en) * | 2021-02-03 | 2021-06-11 | 天津市汉邦植物保护剂有限责任公司 | Dispersible oil suspending agent for preventing and treating insect pests and preparation method and application thereof |
| CN115553288A (en) * | 2022-10-14 | 2023-01-03 | 南京太化化工有限公司 | Dinotefuran dispersible oil suspending agent and preparation process thereof |
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