CN104430387B

CN104430387B - Insecticidal bactericide containing azoxystrobin and pymetrozine and application thereof

Info

Publication number: CN104430387B
Application number: CN201410658956.0A
Authority: CN
Inventors: 陈雨; 任学祥; 高同春
Original assignee: Institute of Plant Protection and Agricultural Products Quality Safety of AAAS
Current assignee: Institute of Plant Protection and Agricultural Products Quality Safety of AAAS
Priority date: 2014-11-18
Filing date: 2014-11-18
Publication date: 2017-01-11
Anticipated expiration: 2034-11-18
Also published as: CN104430387A

Abstract

The invention provides an insecticidal bactericide containing azoxystrobin and pymetrozine. The insecticidal bactericide consists of active ingredients such as azoxystrobin and pymetrozine and aids thereof. According to the indoor bioassay of the insecticidal bactericide, a synergic ratio on false smut is 4:1 to 1:4, and the synergic ratio on rice planthopper is 1:1 to 1:4. A field experiment proves that the two agent composition in different dosage forms has excellent effects for controlling the false smut and rice planthopper; the bactericide has an obvious synergistic effect and a good control effect, is low in dosage, is safe to the environment and target organisms, achieves the one-drug multi-treatment aim, has an excellent synergistic effect for controlling rice diseases and pests, particularly the false smut and rice planthopper, and has good effects of retarding the drug resistance of diseases and pests and reducing the dosage.

Description

A kind of containing Fluoxastrobin and the insecticidal bactericide of pymetrozine and application

(1) technical field

The present invention relates to plant pest management field, be specifically related to a kind of containing Fluoxastrobin with the parasite killing of pymetrozine Antibacterial and its production and use.

(2) background technology

Fluoxastrobin (Azoxystrobin), chemical name: (E)-[2-[6-(2-cyano-benzene oxygen) pyrimidine-4- Base oxygen] phenyl]-3-methoxy-methyl acrylate, belong to methoxy acrylic bactericide.Efficiently, wide spectrum, Almost all of mycota disease all there is is good activity, there is protection, treatment and eradicant action, have infiltration Property and systemic activity, can be used for stem and leaf spraying, seed treatment, soil treatment.

Pymetrozine is a kind of novel low-toxicity picolinamide class insect growth regulator, IGR insecticides.

Planthopper, including brown paddy plant hopper Nilaparvata lugens, white backed planthopper Sogatella furcifera With small brown rice planthopper Laodeobhax striatellus, all there is distribution in paddy fields, the whole nation, be rice crop One of primary pest, except self harm to Oryza sativa L., 5 kinds of viruses that they propagate: Oryza sativa L. grass-like is downgraded Virus (RGSV), Oryza sativa L. tingia stunt virus (RRSV), oryza virus 3 (RSV), Oryza sativa L. secret note Dwarf virus (RBSDV), southern rice black-streaked dwarf virus (SRBSDV), have a strong impact on Oryza sativa L. quality and Yield.Beginning from phase late 1960s, the virosis of planthopper and biography band thereof the most always affects Ya Zhoushui One of key factor that rice produces.In recent years, planthopper to conventional dose (as organic phosphates, chrysanthemum esters and Anabasine etc.) show high-caliber Drug resistance, prevent and treat more and more difficult.

Rice green smut, sick also known as pseudo-smut, paddy blossom disease and Calomelas, for fungal disease, it is on Oryza sativa L. One of Major Diseases, in China Hebei, the Yangtze river basin and each province paddy fields, south happen occasionally, once send out Raw, have a strong impact on yield and the quality of Oryza sativa L., seriously ill plot can underproduction 30%-60%.

Preventing and treating planthopper and false smut mostly are single dispenser in the market, add spraying times and become with dispenser This, the preventing and treating of planthopper and false smut around, so, preventing and treating rice while urgent need is safe and efficient productions in Plant hopper and the medicament of false smut.

In order to adapt to the actual demand in Rice Production, also for reducing the repeatedly dispenser of crops insecticide, antibacterial The problem of wasting manpower and material resources, has carried out Fluoxastrobin with Pyraphione compound to false smut and the indoor virulence of planthopper Measure and field medicine effect test, find that pymetrozine and azoxystrobin compound exist certain increasing to banded sclerotial blight and false smut , there is summation action in effect effect, land for growing field crops effect shows that both use, to planthopper, especially simultaneously to planthopper It is white backed planthopper and brown paddy plant hopper and false smut has good preventive effect.The most both avoided insecticide, antibacterial repeats The waste of the manpower and materials that dispenser causes, it is possible to give full play to the effect of medicament.While decreasing dosage, Effectively reduce ecological disruption and environmental pollution, and rice yield and quality can be improved；Fluoxastrobin and pyrrole in the present invention Aphid ketone all belongs to the toxicity such as low, to people and animals, beneficial organism, Environmental security；Can administer or delay disease pest to single medicine The Drug resistance of agent.

(3) summary of the invention

The present invention provides a kind of containing Fluoxastrobin with the insecticidal bactericide of pymetrozine, it is possible to the rice on preventing and treating Oryza sativa L. simultaneously The multiple pest and disease damages such as plant hopper, false smut and banded sclerotial blight, solve the antibacterial in Rice Production, insecticide repeatedly The problem of dispenser.Spray once in rice plant of tillering stage, spray once in heading early stage, can effectively prevent and treat on Oryza sativa L. Planthopper, stricture of vagina be withered and the harm of the pest and disease damage such as false smut, it is possible to cost of labor when reducing the applications of pesticide and medication Cost, has economy, efficient, the feature of environmental protection.

The technical scheme of the employing of the present invention is as follows:

It is a kind of containing Fluoxastrobin with the insecticidal bactericide of pymetrozine, it is characterised in that: by effective ingredient Fluoxastrobin and pyrrole Aphid ketone forms, and the mass ratio of described Fluoxastrobin and pymetrozine is (1-4): (1-32).

It is described containing Fluoxastrobin and the insecticidal bactericide of pymetrozine, it is characterised in that: phonetic in described insecticidal bactericide The mass ratio of bacterium ester and pymetrozine is 4:1-1:4.

Described insecticidal bactericide, it is characterised in that: Fluoxastrobin and the quality of pymetrozine in described insecticidal bactericide Ratio is 1:1-1:4.

It is described containing Fluoxastrobin and the insecticidal bactericide of pymetrozine, it is characterised in that: the agent of described insecticidal bactericide Type is cream, suspending agent, water-dispersible granules, wettable powder, aqueous emulsion, micro-capsule suspension.

The application on preventing and treating rice pest of the described insecticidal bactericide containing Fluoxastrobin and pymetrozine.

In the insecticidal bactericide that the present invention relates to, the mass ratio of Fluoxastrobin and pymetrozine is 4:1-1:32, both total amounts Shared preparation ratio does not limits.

The insecticidal bactericide of the present invention compared with prior art, produces following beneficial effect: (1) said composition pair Rice green smut has preferable potentiation, can reduce the consumption of medicament.(2) this insecticidal bactericide had both had speed Effect property, has again longer lasting effect, can prevent and treat multiple diseases and insect pest simultaneously.One medicine is controlled more, and saving of labor saves this, The problem solving crop middle and late stage dispenser inconvenience.(3) this insecticidal bactericide toxicity is low, is effectively preventing and treating disease pest While evil, decrease environmental pollution.(4) this medicament composition low cost, preparation is simple, it is simple to promoting should With.

The innovation of the present invention is the potentiation being found that pymetrozine in terms of Fluoxastrobin prevents and treats false smut And the potentiation that Fluoxastrobin is to pymetrozine preventing and treating planthopper.By Fluoxastrobin and pymetrozine certain proportion mixture, The usage amount of medicament is decreased in the case of preventive effect does not goes down.

Toxicity Determination is as shown in the table.Indoor biometrics uses mycelial growth rate method and medicine embrane method.

Fluoxastrobin and Pyraphione compound are as shown in the table to the Toxicity Determination result of rice green smut

Table 1 Fluoxastrobin and the Pyraphione compound Toxicity Determination to false smut

Medicament	Regression equation	EC₅₀(mg/L)	95% confidence limit	CTC
					Fluoxastrobin (A)	Y=1.396+1.757X	0.160	[0.088,0.396]	-
Pymetrozine (B)	---	>1000	---	-
					A:B4:1	Y=1.664+0.916X	0.015	[0.043,0.872]	1311.01
A:B2:1	Y=1.379+1.525X	0.125	[0.023,1.396]	192.50
					A:B1:1	Y=2.039+1.231X	0.022	[0.142,0.993]	1450.30
A:B1:2	Y=1.313+0.726X	0.016	[0.241,1.521]	3087.75
					A:B1:4	Y=0.894+1.313X	0.209	[0.196,1.644]	383.44

Note: CTC value of calculation sets pymetrozine EC₅₀For 1000mg/L.

By upper table it can be seen that Fluoxastrobin has fine indoor virulence, EC to rice green smut₅₀For 0.160mg/L, after insecticide pymetrozine compounds with it, institute's test ratio shows good potentiation.Say After bright insecticide pymetrozine and azoxystrobin compound, the most do not weaken the Fluoxastrobin preventive effect to false smut, rise on the contrary Arrive good potentiation.

Pymetrozine and azoxystrobin compound are as shown in the table to the Toxicity Determination of planthopper (brown paddy plant hopper)

Table 2 pymetrozine and the azoxystrobin compound Toxicity Determination to brown paddy plant hopper

Note: CTC value of calculation sets Fluoxastrobin EC₅₀For 5000mg/L.

By table 2 it can be seen that pymetrozine and Fluoxastrobin co-toxicity coefficient in 8:1,1:1 proportion is the biggest In 120, potentiation is notable, after Fluoxastrobin and Pyraphione compound are described, does not the most weaken pymetrozine to rice The preventive effect of plant hopper, serves good potentiation the most within the specific limits.

(4) invention embodiment:

The insecticidal bactericide containing pymetrozine and Fluoxastrobin that the present invention relates to can be processed into cream, suspending agent, water Dispersive granule, wettable powder and microemulsion, can pass through example 1, example 2, example 3, example 4 and Example 5 is specifically described, but is not limited to this.

Example 1:

Take pymetrozine 15.625g, Fluoxastrobin 15.789g, add acetone 30.0g, toluene 20.0g, high-speed stirring Adding agriculture breast 602#5.069g, TX-104.0g after mixing mix homogeneously, toluene is supplied 100g, is configured to cream.

Example 2:

Take pymetrozine 15.625g, Fluoxastrobin 15.789g, sodium lignin sulfonate 5g, calcium lignosulfonate 2.5g, Styrene phenol formaldehyde resin polyoxyethylene ether 5g, BY1403g, xanthan gum 0.05g, aluminium-magnesium silicate 0.05g, Ethylene glycol 5g, capryl alcohol 3g, mend 100g with water, uniformly puts into sand mill after mixing, is ground to particle diameter 5 micro- Below meter, make suspending agent.

Example 3:

Take pymetrozine 15.625g, Fluoxastrobin 15.789g, Methyl fatty amide benzene sulfonic acid sodium salt 5g, di-2-ethylhexylphosphine oxide Sodium naphthalene sulfonate 5g, ammonium sulfate 5g, White Carbon black 25g, Polyethylene Glycol 3g, light weight calcium is mended to 100g.By former medicine It is crushed to particle diameter 5 μm with auxiliary agent through micro jet, obtains female powder, mother's powder is filled with Aqueous Solutions of Polyethylene Glycol Pelletize after point mixing, dry, sieve, thus prepare water-dispersible granules.

Example 4:

Take pymetrozine 15.625g, Fluoxastrobin 15.789g, Morwet D-425 (Huntsman company) 6 grams, Negel formaldehyde condensation products 2.5 grams, 5 grams of ammonium sulfate, light weight calcium is mended to 100 grams, is uniformly mixed Pulverize by jet mill, prepare wettable powder.

Example 5:

Take pymetrozine 15.625g, Fluoxastrobin 15.789g, be dissolved in the mixing containing 20g Ketohexamethylene and 10gDMF molten In agent, add 10g By140 and 10g agriculture breast 600#-2, be uniformly mixed, above-mentioned solution is slowly fallen Entering in water, be sufficiently stirred under 100-300r/min rotating speed, water complements to 100%, prepares microemulsion.

Above-mentioned raw materials is commercially available qualified products.

Above-mentioned preparation is carried out field test to prove its drug effect.Experimental establishment in Gang Ji experimental plot, Changfeng County, Test area 1400m², Routine Management, do not spray other any medicaments, 10-12 before Oryza sativa L. cut during test It spray pesticide, test sets 3 groups of repetitions, and random district group arranges.Preventing and treating planthopper (small brown rice planthopper and white backed planthopper) See table with false smut field efficacy.

By upper table it can be seen that the mix preparation of pymetrozine and Fluoxastrobin is under 7.0mg/L concentration for the treatment of 7 It to the preventive effect of aphid, has good prevention effect, and the preventive effect of Single-dose pymetrozine is only all more than 90% 78.12%, significant difference；Process the latter 25 days preventive effects to false smut more than 85%, and Fluoxastrobin single dose Preventive effect is 76.77%, has certain gap, is also good pesticide control.

Pymetrozine is fabricated to cream, wettable powder, water dispersible with Fluoxastrobin 32:1-1:4 in proportion by the present invention The preparation such as granule and suspending agent, both can be to water spray, atomizing, it is possible to adds after suitable adjuvants with hot mist machine, fly The machineries such as machine are sprayed on a large scale.

Claims

1. one kind contains Fluoxastrobin and the insecticidal bactericide of pymetrozine, it is characterised in that: its effective ingredient of described insecticidal bactericide is Fluoxastrobin and pymetrozine, and the mass ratio of described Fluoxastrobin and pymetrozine is 2:1 ~ 1:4.

It is the most according to claim 1 containing Fluoxastrobin with the insecticidal bactericide of pymetrozine, it is characterised in that: the dosage form of described insecticidal bactericide is cream, suspending agent, water-dispersible granules, wettable powder, aqueous emulsion, micro-capsule suspension.

The insecticidal bactericide containing Fluoxastrobin and pymetrozine the most according to claim 1 application on preventing and treating rice pest.