CN1096633A - The ternary complex preparation Meilingwang of control cotton bollworm - Google Patents

Abstract

The present invention relates to reduce the ternary complex preparation Meilingwang of the control cotton bollworm of poisoning, potentiating pesticidal, reduction toxicity.Meilingwang is the different resistance level according to cotton bollworm, utilize the method for co-toxicity coefficient, press different proportion and mix known insecticides phoxim, parathion-methyl, cyhalothrin (cyhalothrin Cyhalothrin), and cooperate reduce the poisoning material, synergist is composite forms.It is to prevent and treat one of most economical effective pesticide species of cotton bollworm at present that mentioned component cooperates insecticide emulsion emulsifier commonly used, the Meilingwang of solvent composition.

Description

The ternary complex preparation Meilingwang of control cotton bollworm

The present invention relates to reduce toxicity, reduce poisoning, reduce residual, increase drug effect, kill resistant bollworm and delaying drug resistance, and can promote the mixed insecticidal emulsion Meilingwang of plant growing.

Meilingwang is that cyhalothrin, phoxim, parathion-methyl are mixed by different proportion, and is equipped with suitable assistant agent and solvent etc., thus a kind of wide spectrum that is re-dubbed, efficient, the novel lethane of poisoning.It can kill insects such as resistant bollworm very effectively, again owing to the consumption that has reduced parathion-methyl greatly reduces toxicity, owing to its scientific formula improves co-toxicity coefficient greatly dosage is reduced much again, thereby make this reduction of farming, environmental pollution reduces, release is to the poisoning of crop, thereby becomes the most economical efficacious agents of present cotton field and other farmland pest controls.

Pesticidal mixture made is a pesticides new formulation wide in variety, that quantity big, application is wide, and it is in the ascendant using in the big ground of China, and wide prospect is arranged.The different medicament of insecticidal spectrum is mixed and can enlarges insecticidal spectrum, the pharmacy mix with longevity of residure length that quick-acting is strong can make insecticidal action rapidly and lastingly, high price medicament and pharmacy mix at a low price can reduce farming this, the synergy and antagonism does not take place greatly of the science compatibility of each medicament.Pyrethrin pesticide and organic phosphates, being mixed of carbamate chemicals for agriculture are also constantly released new mixture abroad.Therefore the way that has not only met new trend but also walked the less investment instant effect of applying of the present invention will have good economic worth and obvious social.

The present invention is directed to that the cotton pest development of drug resistance is rapid in recent years, high anti-district, Hebei, Shandong and Henan has not had the situation that medicine can be controlled to cotton bollworm, to more than 20 pesticide species, several thousand kinds of compatibilities screen, select cyhalothrin, phoxim, three kinds of medicaments of parathion-methyl with the co-toxicity coefficient method and be mixed, thereby obtained the new mixture of antagonism cotton bollworm co-toxicity coefficient maximum.

Cotton bollworm for different resistance levels, the shared ratio of three kinds of medicaments is different, to the high area of chrysanthemum ester class resistance, the cyhalothrin ratio is lower slightly, the shared ratio of phoxim has considered that it uses to such an extent that can produce in various degree poisoning too much, and the shared ratio of parathion-methyl has considered that it has used can to strengthen the toxicity of mixture many.For make mixture can synergy, the enemy live the resistance of insect, again reduce poisoning, reduce toxicity, reduce farming this, the present invention has drawn following ratio range: cyhalothrin: phoxim: parathion-methyl=(1～4): (10～50): (5～30), the content of insecticidal active ingredient of the present invention in preparation is 10～60%.

The present invention has considered that the phoxim of high concentration can cause growth inhibition to cotton plant etc., impels early ageing, and that reason is an auxin is lower, so added an amount of plant growth regulator (gibberellin, the basic element of cell division etc.) in mixture.Content in mixture be the insecticide effective ingredient content 0～0.8%.

Add is SV1, SV2, PB, S13, S16, S101, S102, TPP, neem oil, Octachlorodipropyl Ether, sesame ether, piperonyl butoxide or the like to the synergist of chrysanthemum ester class or organic phosphates in the mixture of the present invention.The content of synergist in mixture is 0～20% of insecticidal active ingredient content.

Added emulsifier content 4～17% in the mixture of the present invention, and solvent is to complement to 100% required surplus.

According to the above, mixed emulsion of the present invention is composed as follows: (percentage by weight)

1. cyhalothrin 0.1～10%

2. phoxim 1.0～70%

3. parathion-methyl 1.0～70%

4. synergist 0～20%

5. plant growth regulator 0～0.8%

6. emulsifier 4～17%

7. solvent surplus

Above-mentioned each component is evenly mixed, promptly become desinsection mixed emulsion of the present invention.Its outward appearance is the brownish red oily liquids, and density is 0.90～1.08g/cm ³, its physicochemical property and every index all meet the national standard of relevant emulsifiable concentrates for agricultural chemicals.

During use, with emulsion dilute with water of the present invention, spray and to control worm, can be used for cropland such as cotton and prevent and treat various pests, can promote plant growth simultaneously, preferred person is the high resistant bollworm of control.

Enumerate some embodiment with regard to concrete preparation and drug effect below, they only are to specifying that the present invention does, but not for limiting the scope of the invention.

Embodiment 1: to the accurate toxicity test of high resistance helicoverpa armigera

Adopt the method for indoor accurate toxicity test, measure the LC of each medicament in the following table ₅₀Value is tested on July 12nd, 92 and is carried out.Three instar bollworm grubs that adopt the artificial indoor rearing are diluted with water to series concentration as the examination worm with medicament, adopt the spraying of Potter spray tower, spray amount 5ml, and each repeats with 10 cotton instars, and each medicament repeats secondary, water gagings such as control group spray.The spray medicine finishes, and continues to raise after 10 hours under 30 ℃ of conditions of examination worm, checks examination insect pest situation condition, is death to stir the examination worm gently reactionless.Record, calculating LC ₅₀Value.And utilize the abundant co-toxicity coefficient of Sun Yun (C, T, C are CO-Toxicitycoeffcient) method, calculate co-toxicity coefficient.

Prescription one:

0.5 part of cyhalothrin

26.5 parts of phoxims

26.5 parts of parathion-methyls

4 parts of Butacides

Also compared the drug effect that does not add the Meilingwang of synergist in this test.The Meilingwang that does not add synergist in table is represented with *.

Table one: to the accurate toxicity test (1992, Lianyun Harbour) of high resistance helicoverpa armigera

Medicament LC ₅₀(PPm) LC ₅₀(PPm) co-toxicity coefficient

Cyhalothrin 54.25 206.6

Phoxim 449.4 2368

Parathion-methyl 490 2176

Meilingwang * 165 578 255.6

Meilingwang 106 501 397.8

Experimental data shows: Meilingwang has significant synergies to cotton bollworm, and co-toxicity coefficient is 352, nearly four times of synergy.After adding synergist, control efficiency significantly improves.

Embodiment two: the accurate toxicity test of the anti-regional cotton bollworm of centering

Cotton field, resistance area cotton bollworm in three ages was as the examination worm during this experiment was adopted in 1991.The drug effect that has compared binary mixture and ternary mixture in this experiment, concrete component ratio is: a hot merit mixture, ratio is 19.8: 1; First one merit mixture, ratio is 19.8: 1; Meilingwang mixture, ratio are the time: phoxim: parathion-methyl=1: 50: 49.The effect that adds synergist and do not add formulation of synergist has further been compared in this experiment.The addition of synergist is to add 4 parts of SV in per 100 parts of active ingredients ₁, SV ₂, PB or other synergist.The prescription of representing not add synergist with *.The concrete prescription of Meilingwang is seen prescription two, and this tests among accurate toxicity test method and the embodiment one identical.Experimental data sees table two for details.

Prescription two:

1 part of cyhalothrin

50 parts of phoxims

49 parts of parathion-methyls

4 parts in sesame ether

According to a conventional method above-mentioned active ingredient is made into missible oil.

Table two: the accurate toxicity test of centering bollworm resisting

Medicament LC ₅₀(PPm) LC ₅₀(PPm) co-toxicity coefficient

Cyhalothrin 41.2 182.3-

Phoxim 341.6 1643-

Parathion-methyl 410 1825-

Suffering-merit mixture * 125 467 266.9

First-merit mixture * 135 579 247.1

Meilingwang * 105 525 317.7

Suffering-merit mixture 106 415 314.8

First-merit mixture 112 498 297.9

Meilingwang 74 486 450.8

Measured data shows: the synergistic effect of ternary preparation is significantly increased than binary mixture.The co-toxicity coefficient that adds the Meilingwang of synergist is 450.8, and nearly four sesquialters of mixture synergism are described, drug effect obviously improves than other prescription.

Embodiment three: to the accurate toxicity test of low bollworm resisting

This test adopted low anti-regional cotton bollworm as the examination worm in 1991, and the cotton bollworm of this moment is extremely low to the resistance level of chrysanthemum ester.Except that the Meilingwang that adopts prescription three as the reagent agent, this test method is identical with embodiment one.See prescription three and table three for details.

Prescription three:

12 parts of cyhalothrins

78 parts of phoxims

10 parts of parathion-methyls

0.4 part in sesame ether

According to a conventional method above-mentioned effective ingredient is mixed with missible oil.

Table three: to the accurate toxicity test of low bollworm resisting

Medicament LC ₅₀(PPm) LC ₅₀(PPm) co-toxicity coefficient

Cyhalothrin 30.2 113

Phoxim 358.3 1760

Parathion-methyl 432 1977

Meilingwang 55.6 264 579.8

Cyhalothrin medication large percentage in the prescription three, nearly six times of mixture and single agent synergy.

The data of consolidated statement one～three can find that cotton bollworm mainly is the resistance that has developed pyrethrin pesticide, and this resistance result with ground reports such as Hebei, Henan, Shandong is consistent.But since the cyhalothrin molecular structure in fluorine-containing, the resistance development level is slower, and is more much lower than other chrysanthemum ester.

Meilingwang of the present invention can adopt different prescriptions according to the situation difference of bollworm resistance development, can reduce the consumption of cyhalothrin to the high cotton bollworm of chrysanthemum ester class resistance, and vice versa.Through the prescription one～three of repeated screening, co-toxicity coefficient is 397.8～579.8, than using 4～5 times of single agent synergy.In actual applications, Meilingwang of the present invention can be according to the resistance development level of each regional insect, and the selection co-toxicity coefficient is big, synergy is remarkable, the prescription of most economical practicality, prevents and treats cotton pest effectively.

Embodiment four: reduce the poisoning data

1, phoxim is a principal item that is used to prevent and treat cotton bollworm now, and according to our factory phoxim selling market trace analysis, annual nearly 4000t is used to prevent and treat cotton bollworm.But when phoxim surpassed 60ml/ mu in flower bud phase (plant height 10-14cm) dosage, investigation about 15 days had the effect that cotton is downgraded after the dispenser, according to another report, used in the cotton later stage, also can cause early ageing.

It is on the low side to consider that inhibition growth and early ageing all relate to the auxin ratio, therefore, for overcoming poisoning, should add an amount of plant growth promoter.

2, according to reports, cotton boll larva will endanger the 20-30 flower bud all one's life, and in fact these flower buds are not eaten up by cotton bollworm, but through the cotton boll insect bite after flower bud is taken place comes off.The red flower bud of 20PPm is plain handles and adopt, and can reduce effectively and take off bell 34.2-30.3%.

Based on above reason, processing method like the reference class, the present invention adds 0-1% gibberellin in Meilingwang.Through evidence, Meilingwang is to cotton plant unrestraint growth and devitalizing effect.And minimizing fruit abscission rate 10-20%.

In addition, produce the strong actual conditions of patented product gram bacterium according to our factory, adding gram bacterium is strong in Meilingwang; can play good stimulating growth and Bao Lei effect equally; the gram bacterium is strong to be a kind of hormone-type protectiveness organophosphorus fungicide, can significantly promote plant growth, makes the blade greening, sends out prosperous.The present invention adds 0-5% gram bacterium and strengthens in Meilingwang, the test of pesticide effectiveness proves, to the devitalizing effect of cotton plant unrestraint growth, and can reduce fruit abscission rate 10-30%.

Claims (15)

1, a kind of reduction toxicity, reduce poisoning, reduce residual, increase drug effect, kill resistant bollworm and delaying drug resistance, and can promote the mixing liquor of plant growing, it is characterized in that containing in the liquor cyhalothrin (cyhalothrin, Cyhalothrin), phoxim, parathion-methyl insecticide.

2, according to the liquor of claim 1, it is characterized in that effective ingredient cyhalothrin, phoxim, parathion-methyl are with (0.1～10): (1.0～70): the ratio of (1.0～70) is mixed.Effective ingredient accounts for 10～60% of gross weight in mixing liquor.

3,, it is characterized in that containing in the liquid synergist according to the liquor of claim 1～2.

4, according to the liquor of claim 3, synergist wherein can be synergy phosphorus (SV1), Butacide (PB), Octachlorodipropyl Ether, sesame ether, piperonyl butoxide, S13, S16, S101, S102, TPP, neem oil, China tree wet goods.

5, according to the liquor of claim 4, wherein preferred synergist is SV1.

6,, it is characterized in that containing in the liquor 0～20% synergist according to the liquor of claim 3.

7,, it is characterized in that containing in the liquor plant growth regulator to reduce poisoning according to arbitrary liquor in the claim 1～6.

8, according to the liquor of claim 7, plant growth regulator wherein can be gibberellin, the basic element of cell division.

9, liquor according to Claim 8 wherein reduces preferably gibberellin of poisoning material.

10,, it is characterized in that containing in the liquor plant growth regulator of 0～0.8% weight according to claim 7,8 liquor.

11,, it is characterized in that also containing in the liquor emulsifier and solvent according to the liquor of above-mentioned arbitrary claim.

12, according to the liquor of claim 11, the content of emulsifier wherein is 4～17%(weight), all the other are solvent.

13, according to the preparation method of the liquor of above-mentioned arbitrary claim, it is characterized in that above-mentioned each effective ingredient is evenly mixed, to form the liquor of homogeneous phase.

14, according to the purposes of the liquor of claim 1～13, it is characterized in that evenly being sprayed on the crop with pest control behind the liquor dilute with water.

15, according to the purposes of the liquor of claim 14, it is characterized in that it is a broad spectrum pesticide, and preferably prevent and treat resistant bollworm.