CN105145635A - Composition used for preventing and treating American white moths by helicopter chemical application and preparation method thereof - Google Patents
Composition used for preventing and treating American white moths by helicopter chemical application and preparation method thereof Download PDFInfo
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Abstract
The invention belongs to the technical field of agriculture, and particularly discloses a composition used for preventing and treating American white moths by helicopter chemical application and a preparation method thereof. According to the composition used for preventing and treating American white moths by helicopter chemical application, the weight ratio of active components A to active components B is 0.5:1.5-1.5:29.5, the active components A are bacillus thuringiensis, the active components B are any one of tebufenozide, methoxyfenozide and lufenuron, the components A and the components B account for 2-30% of the total weight of the composition, and the balance is auxiliary components. The composition can effectively prevent or control the American white moths, is environmentally friendly, relatively safe for special breeding of bee, silkworm and other species and suitable for ultra-low-capacity spraying of a helicopter and being used in drought regions, the spraying area is increased, the take-off and landing frequency of the helicopter is reduced, the adhesion of the chemical on the surfaces of plants is high, and the chemical is resistant to rain wash.
Description
(1) technical field
The invention belongs to agricultural technology field, particularly a kind of composition and method of making the same for helicopter dispenser control fall webworm.
(2) background technology
Fall webworm are worldwide quarantine pest insects, also be uniquely a kind ofly be classified as the insect of quarantine object by agricultural, forestry in China simultaneously, known its can threaten more than 300 kind of agriculture and forestry plant at present, has the features such as harm is large, propagation is rapid, territory, normal region is wide, breeding amount is large, feeding habits are assorted.Fall webworm every year can natural diffuseness 35 ~ 40km, and a female moth can breed three generations in 1 year, lays eggs at most and reaches more than 1800, and in several days time of Onset, namely leaf has been gnawed.Fall webworm are after invading China last century, became the primary pest of harm China central and east province forestry in recent years gradually, and the situation wide in scope, occurring area large and it is high to cause damage, some areas emergence period shifts to an earlier date, generation number increases, generating period shortens, difficulty of prevention and cure strengthens.Fall webworm are in China mainly to endanger the common tree such as willow, willow, method paulownia, and also there is outburst some areas on the plant such as mulberry tree, corn, on ginkgo, even also find that there is the case of harm.Traditional insect control mode almost effectively can not control its large area and spread fast, and helicopter sprays insecticide Prevention Technique because efficiency is high, applicability is wide, cost is low, reply emergency case ability is strong, be conducive to the advantages such as elimination is sudden, explosive insect, and become the Main Means controlling fall webworm fast propagation.
The domestic anti-agriculture and forestry injurious insect agricultural chemicals used that flies is substantially from commercially available conventional pesticide at present, and commercially available conventional pesticide often runs into following problem in process sprayed insecticide by helicopter: adopt solid pharmaceutical preparation as can wet-milling, water dispersible granules spraying often can run into because shower nozzle blocking cannot the phenomenon of normal dispenser; Employing missible oil etc. often can run into the phenomenon of etching apparatus containing the agricultural chemicals that organic solvent is more; Although the formulations such as aqueous suspension agent, aqua, aqueous emulsion can adapt to the requirement flying to prevent, in sprinkling process, because of the evaporation that droplet is meticulous, cause, drift about too fast, very likely cause the waste of medicine and the generation of secondary disaster.Therefore, the agricultural chemicals that a kind of suitable helicopter flies anti-needs is found most important.
The mainstay of domestic control fall webworm based on emamectin benzoate, d ichlorbenzuron or its complex preparation, or have the uses such as matrine, bacillus thuringiensis,Bt, r, but these medicines are through continuous use in a few years, also occurred more problem.Such as, emamectin benzoate or beta-cypermethrin use more extensive because having higher activity to fall webworm, but in recent years because the fall webworm outbreak period often coincides with special cultivation times such as honeybee, silkworm aquaculture, locusts, cause nearest 5 years while flying anti-fall webworm to silkworm cultivation area, especially middle areas in Shandong Province, southern Shandong and some areas, northern Suzhou cause very heavy loss, even occurred once flying anti-after the whole county silkworm phenomenon of clearing off.And, d ichlorbenzuron, matrine, bacillus thuringiensis,Bt are very micro-at the action effect of fall webworm outbreak period, often before drug effect does not play completely, leaf has been gnawed totally, and d ichlorbenzuron is through extensive continuously use in a few years, the fall webworm in some areas create pesticide resistance, the activity that d ichlorbenzuron is showed decreases, and does not reach desirable effect.
(3) summary of the invention
The present invention, in order to make up the deficiencies in the prior art, provides that a kind of preparation method is simple, low for equipment requirements, technique and the composition and method of making the same for helicopter dispenser control fall webworm that is simple to operate, that be suitable for large-scale production, significantly reduce production cost.
The present invention is achieved through the following technical solutions:
A kind of composition for helicopter dispenser control fall webworm, its active ingredient consists of active component A and active component B, the weight ratio of active component A and active component B is 0.5:1.5 ~ 1.5:29.5, described active component A is bacillus thuringiensis,Bt, active component B is any one in worm hydrazides, methoxyfenozide and lufenuron, described active component A and active component B account for 2% ~ 30% of composition total weight, and all the other are auxiliary element; Described auxiliary element is emulsifier 10% ~ 30%, dispersant 0.5% ~ 10%, thickener 0.5% ~ 15%, water-loss reducer 0.1% ~ 5%, and surplus is dispersion medium.
Described emulsifier is alkylphenol polyoxyethylene (OP-7, NP-10), fatty alcohol-polyoxyethylene ether, Ben-zylphenol Polyoxyethyl Ether, phenethyl phenol APEO (601#), oleic acid polyoxyethylene, rosin acid APEO, alkylbenzenesulfonate, alkyl benzene calcium sulfonate, aliphatic alcohol sulfate, aliphatic alcohol polyethenoxy sulphate, aliphatic alcohol polyethenoxy phosphate, alkylphenol-polyethenoxy phosphate (NP-7-P), Arlacel-65 APEO (T-65, T-80) one or more in.
Described emulsifier is commercial goods emulsifier EM UGENA04 (Wuxi hundred lime Chemical Company), GreenmulEF86 (Beijing Green Tai Mu Science and Technology Ltd.), GreenmulEF80 (Beijing Green Tai Mu Science and Technology Ltd.), GreenmulEF25 (Beijing Green Tai Mu Science and Technology Ltd.), SP-OF3468MP (Changsha Deyuan Environmental Agents Ltd.), SP-OF3472B (Changsha Deyuan Environmental Agents Ltd.), 9578-X (Jiangsu Kai Yuan Science and Technology Ltd.), 9578-XH (Jiangsu Kai Yuan Science and Technology Ltd.), GY-OD01 (Beijing Guangyuan Yinong Chemical Co., Ltd), AG530 (Akzo Nobel's chemicals (Ningbo) Co., Ltd), AG540 (Akzo Nobel's chemicals (Ningbo) Co., Ltd), 1040W (Akzo Nobel's chemicals (Ningbo) Co., Ltd), Tensiofix869 (OMNICHEM company), AlkamusVO/01 (Luo Diya group), GeronolVO/02N (Luo Diya group), TANAMULSOD (open up receive chemistry), one or more in Emulsogen1572 (Clariant).
Described dispersant is one or more in alkylnaphthalene sulfonate, two (alkyl) naphthalenesulfonate formaldehyde condensation compound, phenethyl phenol polyoxyethylene phosphonate, aliphatic alcohol polyoxyvinethene phosphate, alkylphenol polyoxyethylene phosphate, phenethyl phenol APEO, polyoxypropylene block copolymers, alkylphenol polyoxyethylene formaldehyde condensation products, ethylenediamine polyethenoxy ether, alkylphenol-polyethenoxy polyethenoxy ether, polycarboxylate.
Described dispersant is commercial goods dispersant sodium methylene bis-naphthalene sulfonate (Nanjing Qi Cheng new material Co., Ltd), sodium lignin sulfonate (Nanjing Qi Cheng new material Co., Ltd), calcium lignosulfonate (Nanjing Qi Cheng new material Co., Ltd), MorwetD-425 (Akzo Nobel's chemicals (Ningbo) Co., Ltd), WGN (Clariant), GY-D800 (Beijing Guangyuan Yinong Chemical Co., Ltd), EmulsonAGTRN14105 (Ning Baidi group), one or more in GreensperseBE25 (Beijing Green Tai Mu Science and Technology Ltd.).
Described thickener is one or more in organobentonite, gas-phase silica, superfine white carbon black, aluminium-magnesium silicate; Described dispersion medium is in methyl oleate, coconut acid methylester, soybean oil methyl esters, soybean oil, rapeseed oil, cottonseed oil, cocoa butter, palm oil and linseed oil, epoxidized soybean oil, Valelinum Liquidum, slab oil, tall oil fatty acid ester, pine slurry butyl ester, coconut oil heptyl ester, petroleum hydrocarbon, triglycerides, rape seed oil heptyl ester, rape seed oil methyl esters, lauric acid heptyl ester, one or more in kerosene; Described water-loss reducer is one or more in urea powder, ammonium sulfate powder, sodium chloride powder, the particle diameter D50 < 0.5mm of described urea powder, ammonium sulfate powder, sodium chloride powder.
Preferred thickener is organobentonite; Preferred dispersion medium is one or both in soybean oil, soybean oil methyl esters; Preferred water-loss reducer is urea powder, the particle diameter D50 < 0.5mm of urea powder.
The formulation of said composition is for dispersibling oil-suspending agent.
This is used for the preparation method of the composition of helicopter dispenser control fall webworm, adopt following steps: after active component A, active component B, emulsifier, dispersant, thickener, water-loss reducer and dispersion medium being weighed in proportion, in shearing still, shear 40min, then in the sand mill of series connection, sand milling, to particle diameter D50 < 3 μm, obtains this prevents and treats fall webworm composition for helicopter dispenser continuously.
The pharmaceutical characteristic of each active component of the present invention is as follows:
Bacillus thuringiensis,Bt: bacillus thuringiensis,Bt produces crystal bacillus through cultivating the class comprising many mutation of producing, for preventing and treating orthoptera, diptera, Hymenoptera, particularly lepidopterous insect; Bacillus thuringiensis,Bt is as a kind of microorganism formulation, its insecticidal mechanism is that the poisonous parasporal crystal (main component is protein) of release enters insect digestive tract, parasporal crystal is broken to the delta-endotoxin compared with subsection by insect alkalescence intestinal juice, worm intestines are made to stop wriggling, paralysing, worm enterocyte dissociates, stops eating, and gemma is then sprouted in intestines, enters haemocoele amount reproduction through destroyed intestines wall, make insect obtain septicemia and dead, dead larvae health is weak and limp in black.
Lufenuron: lufenuron belongs to substituted urea class insecticide, stable under air, illumination, lufenuron, by acting on insect larva, stoping larva exfoliating process and kill off the insect pests, is suitable for preventing and treating insect pyrethroid and organophosphorous pesticide being produced to resistance; The lasting period of lufenuron medicament is long, resistance of rainwater washing against, is conducive to reducing laxative number of times, and has selectivity to useful arthropods adult; After medication, have ovicidal function, can kill and newly produce worm's ovum, take effect fruit for after dispenser 2 ~ 3 days; To honeybee and hornet low toxicity, can use during honeybee producting honey, compare organic phosphor, carbamate chemicals for agriculture is safer; Have good preventive effect to lepidoptera pest, low dosage uses still has good preventive effect to caterpillar, flower thrips larva, effectively can control lepidoptera pest chrysanthemum ester class and organic phosphor being had to resistance.
Worm hydrazides: worm hydrazides belongs to hydrazine insecticides is a kind of insect growth regulator type insecticide of efficient, low toxicity; Worm hydrazides has stomach poison function, is that a kind of insect casts off a skin accelerator, and lepidopterous larvae can be induced to produce reaction of casting off a skin in advance also not entering the stage of casting off a skin; After spray medicine, insect stops taking food in 6 ~ 8 hours, dewaters, hungry and dead in 2 ~ 3 days; Worm hydrazides has special efficacy to lepidoptera pest and larva, and have certain selectively acting to diptera and Daphnia insect, the lasting period reaches 14 ~ 20 days.
Methoxyfenozide: methoxyfenozide belongs to hydrazine insecticides is moulting hormone insecticides, and based on action of contace poison, the disturb and harm normal growth of worm of ability is grown, suppressed to ingest, and has certain systemic action.Can cause after larval feeding methoxyfenozide casting off a skin in non-ecdysis, cast off a skin and not exclusively cause larva dehydration, hunger, finally dead.Methoxyfenozide controlling object selectivity is strong, has highly select insecticidal activity to lepidoptera pest, to beneficial insect, beneficial mite safety, environmentally friendly.
The beneficial effect that the present invention is used for the composition and method of making the same of helicopter dispenser control fall webworm is: preparation method is simple, by the active component A of two kinds of different structures, the different mechanism of action and active component B rational mixture, make to produce synergistic effect between active component, control efficiency is made significantly to be better than the use of each single dose, can effectively prevent or control fall webworm, reduce effective ingredient consumption, cost-saving, delay the drug-fast generation of insect, and then the pollution even avoiding agricultural chemicals to food and environment can be alleviated; Environmentally friendly, comparatively safe to the special cultivation such as honeybee, silkworm.The present composition is made to dispersible after oil-suspending agent and is applicable to helicopter ultra low volume spraying, can overcome the deficiency that the existing formulations of pesticide fly at helicopter in anti-process, can not block shower nozzle; The dispersion medium used greatly can improve the anti-evaporating effect of preparation, reduces the use of anti-evaporating agent; Can be watered on a small quantity or not be watered use, suitable arid area uses; Spray area strengthens, and decrease helicopter landing number of times, and medicament is high in the adhesiveness of plant surface, anti-rain drop erosion; What used dispersibles oil-suspending agent not containing corrosive organic solvent, to spray appliance without any corrosion.
(4) embodiment
Below in conjunction with embodiment, the invention will be further described, but the present invention is not limited thereto, and the preparation method in embodiment is customary preparation methods, no longer describes in detail.
Embodiment 1:(is in double centner, as follows)
This is used for the composition of helicopter dispenser control fall webworm, adopts following steps:
By the bacillus thuringiensis,Bt of above-mentioned weight, lufenuron, SP-OF3472, sodium methylene bis-naphthalene sulfonate, organobentonite, urea powder, soybean oil methyl esters, 40min is sheared to shearing evenly in shearing still, then in the sand mill of series connection, sand milling, to particle diameter D50 < 3 μm, obtains this prevents and treats fall webworm composition for helicopter dispenser continuously.
Embodiment 2:
This is used for the composition of helicopter dispenser control fall webworm, adopts following steps:
By the bacillus thuringiensis,Bt of above-mentioned weight, lufenuron, 9578-XH, D-800, organobentonite, urea powder, soybean oil methyl esters, soybean oil, 40min is sheared to shearing evenly in shearing still, then in the sand mill of series connection, sand milling, to particle diameter D50 < 3 μm, obtains this prevents and treats fall webworm composition for helicopter dispenser continuously.
Embodiment 3:
This is used for the composition of helicopter dispenser control fall webworm, adopts following steps:
By the bacillus thuringiensis,Bt of above-mentioned weight, methoxyfenozide, 9578-X, MorwetD-425, organobentonite, urea powder, soybean oil methyl esters, soybean oil, 40min is sheared to shearing evenly in shearing still, then in the sand mill of series connection, sand milling, to particle diameter D50 < 3 μm, obtains this prevents and treats fall webworm composition for helicopter dispenser continuously.
Embodiment 4:
This is used for the composition of aircraft spraying medicine control fall webworm, adopts following steps:
By the bacillus thuringiensis,Bt of above-mentioned weight, methoxyfenozide, GreenmulEF80, alkylphenol polyoxyethylene (OP-7), EmulsonAGTRN14105, organobentonite, urea powder, D-425, soybean oil, 40min is sheared to shearing evenly in shearing still, then in the sand mill of series connection, sand milling, to particle diameter D50 < 3 μm, obtains this prevents and treats fall webworm composition for helicopter dispenser continuously.
Embodiment 5:
This is used for the composition of aircraft spraying medicine control fall webworm, adopts following steps:
By the bacillus thuringiensis,Bt of above-mentioned weight, worm hydrazides, GeronolVO/02N, polyoxyethylene nonylphenol ether (NP-10), GreensperseBE25, organobentonite, urea powder, soybean oil methyl esters, 40min is sheared to shearing evenly in shearing still, then in the sand mill of series connection, sand milling, to particle diameter D50 < 3 μm, obtains this prevents and treats fall webworm composition for helicopter dispenser continuously.
Embodiment 6:
This is used for the composition of helicopter dispenser control fall webworm, adopts following steps:
By the worm hydrazides of above-mentioned weight, bacillus thuringiensis,Bt, Arlacel-65 APEO (T-80) phenethyl phenol APEO (601#), alkylphenol-polyethenoxy phosphate (NP-7-P), WGN, organobentonite, urea powder, soybean oil methyl esters, soybean oil, 40min is sheared to shearing evenly in shearing still, then in the sand mill of series connection, sand milling, to particle diameter D50 < 3 μm, obtains this prevents and treats fall webworm composition for helicopter dispenser continuously.
In order to verify the effect of the composition of helicopter dispenser of the present invention control fall webworm, inventors performed following test:
1, toxicity measures
(1-1) evaluation method:
Usually three kinds of type of action are shown, i.e. synergistic effect, summation action, antagonism after two kinds of insecticide mixing.Sun Yunpei (SunY-P) method is the conventional evaluation criterion that interacts after those skilled in the art evaluate two kinds of active component mixing, and the present invention adopts the method to calculate co-toxicity coefficient evaluation and uses effect with.
Computing formula:
The theoretical toxicity index (TTI) of the actual toxicity index of co-toxicity coefficient=mixture (ATI)/mixture
The content of B in the TI × mixture active ingredient of the content+B agent of A in the TI × mixture active ingredient of theoretical toxicity index (the TTI)=A agent of mixture
The LC of actual toxicity index (the ATI)=standard agent of mixture
50the LC of/mixture
50
The LC of toxicity index=standard agent
50the LC of/reagent agent
50(usually using A as standard agent)
Wherein, co-toxicity coefficient is greater than 100 for synergistic effect, and co-toxicity coefficient is significantly less than 100 for antagonism, and co-toxicity coefficient equals 100 for summation action.
(1-2) for examination insect: more than fall webworm larva 3 age
(1-3) reagent agent: 1.5% bacillus thuringiensis,Bt dispersibles oil-suspending agent, 20% worm hydrazides dispersibles oil-suspending agent, 20% methoxyfenozide dispersibles oil-suspending agent.
(1-4) test procedure:
Test adopts infusion process, respectively prepare the present composition and often plant medicament 3 concentration, the new fresh mulberry leaf gathered to be immersed in the liquid after dilution 5 ~ 10 seconds, insectary breeding grub is put into after drying, repeat to try worm 80 ~ 120, clear water contrasts, and checks death condition every 12 hours, record dead larvae situation in 168 hours, adopt DPSV7.05 to carry out data analysis.
Table 1: bacillus thuringiensis,Bt lufenuron is to the indoor virulence result of fall webworm
| Composition | Bacillus thuringiensis,Bt lufenuron ratio | Virulence regression equation | LC50(mg/l) | Co-toxicity coefficient |
| Bacillus thuringiensis,Bt | - | y＝1.9820+1.4856x | 107.5230 | - |
| Lufenuron | - | y＝2.0865+4.0472x | 4.4823 | - |
| Proportioning 1 | 1：3 | y＝1.3852+7.0096x | 3.2787 | 180 |
| Proportioning 2 | 1：5 | y＝3.7020+5.7612x | 1.6797 | 318 |
| Proportioning 3 | 1：7 | y＝2.9636+4.9649x | 2.5713 | 202 |
Table 2: bacillus thuringiensis,Bt worm hydrazides is to the indoor virulence result of fall webworm
| Composition | Bacillus thuringiensis,Bt worm hydrazides ratio | Virulence regression equation | LC50(mg/l) | Co-toxicity coefficient |
| Bacillus thuringiensis,Bt | - | y＝1.9820+1.4856x | 107.5230 | - |
| Worm hydrazides | - | y＝2.5428+2.3620x | 10.9720 | - |
| Proportioning 1 | 1:30 | y＝3.6043+1.4610x | 9.0219 | 125 |
| Proportioning 2 | 1:20 | y＝1.9444+3.8118x | 6.3329 | 181 |
| Proportioning 3 | 1:10 | y＝2.0036+3.3326x | 7.9268 | 152 |
Table 3: bacillus thuringiensis,Bt methoxyfenozide is to the indoor virulence result of fall webworm
| Composition | Bacillus thuringiensis,Bt methoxyfenozide ratio | Virulence regression equation | LC50(mg/l) | Co-toxicity coefficient |
| Bacillus thuringiensis,Bt | - | y＝1.9820+1.4856x | 107.5230 | - |
| Methoxyfenozide | - | y＝1.2316+4.4391x | 7.0615 | - |
| Proportioning 1 | 1:20 | y＝1.5602+4.5819x | 5.6326 | 132 |
| Proportioning 2 | 1:15 | y＝1.7705+5.0331x | 4.4208 | 170 |
| Proportioning 3 | 1:10 | y＝2.2268+3.4997x | 6.2001 | 126 |
Can see from table 1-table 3 toxicity result of the test, the present composition containing active component A and active component B has obvious synergistic effect to fall webworm.
2, laboratory anti-evaporating test:
(2-1) test objective: checking the present invention is used for the anti-evaporating effect of the composition of aircraft spraying medicine control fall webworm.
(2-2) experimental enviroment: the indoor of testing closing are carried out, and keep windless condition during test, control indoor temperature 30 DEG C, humidity 15%.
(2-3) reagent agent
Table 1 anti-evaporating tests adjuvant used active ingredient and manufacturer
| Auxiliary agent title | Active ingredient | Manufacturer |
| Silwet DRS-60 | Organosilicon | Mitugao New Material Group |
| Prevent wafing 360 | Organosilicon | Beijing Green Tai Mu Science and Technology Ltd. |
| AS-1 | Organosilicon | Hefei Ai Shang agricultural agent Co., Ltd |
| AS-2 | Methylated vegetable oils and organosilicon | Hefei Ai Shang agricultural agent Co., Ltd |
| Plant resource synergist Tmax | Vegetable oil | Beijing Guangyuan Yinong Chemical Co., Ltd |
| Ultra low volume spray auxiliary agent | Organosilicon and mineral oil | The biochemical company limited by shares in rural area, Guangxi |
| Urea | Organic nitrogenous fertilizer | Yanzhou Coal Mining Lunan Chemical Fertilizer Plant |
(2-4) test procedure: electric centrifugal atomizer is fixed on apart from the support of ground vertical height 2m, to be projected as the center of circle immediately below shower nozzle, the circular arc of radius 1m is fixed 3 points as test point (test point and shower nozzle air line distance 2.236m), each test point places a droplet test card, repeats totally 3 droplet test cards at every turn.Before spraying, measure capacity of sprinkler and initial particle (detecting apart from shower nozzle 20cm place), spraying 5s, collects droplet test card, application depositescan software analysis droplet size (μm), coverage density (individual/cm after landing 2min
2), deposition (μ l/cm
2) etc. data, and carry out statistical analysis with DPS software.
The particle diameter of table 2 present composition and control group medicine reduces percentage and volume evaporativity data
Tested as can be seen from above-mentioned anti-evaporating, the composition for aircraft spraying medicine control fall webworm that the embodiment of the present invention 3 obtains is better than other tank-mix adjuvants by the anti-evaporating effect after usage ratio dilution.
3, active by the target organisms of the land for growing field crops application test checking present composition:
(3-1) test method:
Choose the method paulownia nursery of 5 pieces of areas about 50 mu respectively, every block gap 500m, as test process ground; The helicopter used is Robinson R44, and spray appliance is U.S. SIMPLEX, atomisation pressure 2.5bar, spray bar length 8m, 26, shower nozzle.
Each chemicals treatment district flies an anti-sortie, and in selection, public attention arranges blank district.
Spouting liquid: 200ml/ mu; Flying height: apart from trees top 5m; Flying speed: 110km/h.
(3-2) result of the test:
The preventive effect data of table 3 present composition and control group medicine
| Group | Insect population radix | After medicine 1 day | After medicine 3 days | After medicine 5 days | After medicine 7 days | Preventive effect |
| Embodiment 1 | 163 | 151 | 63 | 13 | 0 | 100％ |
| Embodiment 4 | 117 | 0 | 0 | 0 | 0 | 100％ |
| Embodiment 5 | 144 | 142 | 77 | 29 | 2 | 98.6％ |
| Control group | 120 | 120 | 117 | 114 | 99 | - |
In table 3, the data display present composition has higher activity to fall webworm, after medicine 7 days substantially without live worm, illustrate that several medicament can play to outbreak period white moth larvae the effect killed fast, there is bee activity in pilot region simultaneously, Specialty bio cultivation under proving test medicine concentration, can not be endangered.
(3-2) ultra low volume spray quality examination:
Airplane spray quality completes by following test, adopts the obtained composition of the embodiment of the present invention 3 to carry out sprinkling quality determination.
Select the method paulownia nursery of about about 50 mu of area as test process ground, diagonal 5 sampling, every sample point establishes 9 test points, and 3 × 3 is evenly distributed, often some spacing distance 2m.
Droplet test card (the Chinese Academy of Agricultural Sciences's plant protection produced) is adopted to carry out coverage density of droplets mensuration; representational forest land is selected to carry out sprinkling quality test; diagonal 5 sampling; every sample point 3 tree; every tree arranges droplet test card 1 outward with canopy in canopy, and rational height is bottom branch place.
Collect droplet test card after spraying, and apply depositescan software analysis coverage density of droplets, calculate droplet distribution consistency degree.
The droplet distribution consistency degree coefficient of variation represents.The coefficient of variation (CV), by each sampled point coverage density of droplets, calculates as follows.
CV(％)＝[SD/X]×100
In formula: the CV-coefficient of variation, %; SD-standard deviation; The average coverage density of X-droplet.
Table 4 droplet distribution consistency degree test result
From table 4, data can be seen, use the compositions-treated plot that the embodiment of the present invention 3 is obtained, droplet par central diameter (μm) NMD=414.2 μm, volume median (μm) VMD=198.7 μm, droplet is bigger than normal, the coefficient of variation is relatively little, and droplet distribution consistency degree is higher.
Claims (9)
1. the composition for helicopter dispenser control fall webworm, it is characterized in that: its active ingredient consists of active component A and active component B, the weight ratio of active component A and active component B is 0.5:1.5 ~ 1.5:29.5, described active component A is bacillus thuringiensis,Bt, active component B is any one in worm hydrazides, methoxyfenozide and lufenuron, described active component A and active component B account for 2% ~ 30% of composition total weight, and all the other are auxiliary element; Described auxiliary element is emulsifier 10% ~ 30%, dispersant 0.5% ~ 10%, thickener 0.5% ~ 15%, water-loss reducer 0.1% ~ 5%, and surplus is dispersion medium.
2. the medicine for helicopter dispenser control fall webworm according to claim 1, it is characterized in that: described emulsifier is alkylphenol polyoxyethylene (OP-7, NP-10), fatty alcohol-polyoxyethylene ether, Ben-zylphenol Polyoxyethyl Ether, phenethyl phenol APEO (601#), oleic acid polyoxyethylene, rosin acid APEO, alkylbenzenesulfonate, alkyl benzene calcium sulfonate, aliphatic alcohol sulfate, aliphatic alcohol polyethenoxy sulphate, aliphatic alcohol polyethenoxy phosphate, alkylphenol-polyethenoxy phosphate (NP-7-P), Arlacel-65 APEO (T-65, T-80) one or more in.
3. the medicine for helicopter dispenser control fall webworm according to claim 1, it is characterized in that: described emulsifier is commercial goods emulsifier EM UGENA04, GreenmulEF86, GreenmulEF80, GreenmulEF25, SP-OF3468MP, one or more in SP-OF3472B, 9578-X, 9578-XH, GY-OD01, AG530, AG540,1040W, Tensiofix869, AlkamusVO/01, GeronolVO/02N, TANAMULSOD, Emulsogen1572.
4. the composition for helicopter dispenser control fall webworm according to claim 1, is characterized in that: described dispersant is one or more in alkylnaphthalene sulfonate, two (alkyl) naphthalenesulfonate formaldehyde condensation compound, phenethyl phenol polyoxyethylene phosphonate, aliphatic alcohol polyoxyvinethene phosphate, alkylphenol polyoxyethylene phosphate, phenethyl phenol APEO, polyoxypropylene block copolymers, alkylphenol polyoxyethylene formaldehyde condensation products, ethylenediamine polyethenoxy ether, alkylphenol-polyethenoxy polyethenoxy ether, polycarboxylate.
5. the composition for helicopter dispenser control fall webworm according to claim 1, is characterized in that: described dispersant is one or more in commercial goods dispersant sodium methylene bis-naphthalene sulfonate, sodium lignin sulfonate, calcium lignosulfonate, MorwetD-425, WGN, GY-D800, EmulsonAGTRN14105, GreensperseBE25.
6. the composition for helicopter dispenser control fall webworm according to claim 1, is characterized in that: described thickener is one or more in organobentonite, gas-phase silica, superfine white carbon black, aluminium-magnesium silicate; Described dispersion medium is in methyl oleate, coconut acid methylester, soybean oil methyl esters, soybean oil, rapeseed oil, cottonseed oil, cocoa butter, palm oil and linseed oil, epoxidized soybean oil, Valelinum Liquidum, slab oil, tall oil fatty acid ester, pine slurry butyl ester, coconut oil heptyl ester, petroleum hydrocarbon, triglycerides, rape seed oil heptyl ester, rape seed oil methyl esters, lauric acid heptyl ester, one or more in kerosene; Described water-loss reducer is one or more in urea powder, ammonium sulfate powder, sodium chloride powder, the particle diameter D50 < 0.5mm of described urea powder, ammonium sulfate powder, sodium chloride powder.
7. the composition for helicopter dispenser control fall webworm according to claim 1, is characterized in that: described thickener is organobentonite; Described dispersion medium is one or both in soybean oil, soybean oil methyl esters; Described water-loss reducer is urea powder, the particle diameter D50 < 0.5mm of urea powder.
8. the composition for helicopter dispenser control fall webworm according to claim 1, is characterized in that: the formulation of said composition is for dispersibling oil-suspending agent.
9. prevent and treat the preparation method of the composition of fall webworm as claimed in claim 8 for helicopter dispenser for one kind, it is characterized in that: after comprising the steps: active component A, active component B, emulsifier, dispersant, thickener, water-loss reducer and dispersion medium to weigh in proportion, in shearing still, shear 40min, then in the sand mill of series connection, sand milling, to particle diameter D50 < 3 μm, obtains this prevents and treats fall webworm composition for helicopter dispenser continuously.
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