CN101099485B - Fipronil and canephor insecticide composition - Google Patents
Fipronil and canephor insecticide composition Download PDFInfo
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- CN101099485B CN101099485B CN2007100702201A CN200710070220A CN101099485B CN 101099485 B CN101099485 B CN 101099485B CN 2007100702201 A CN2007100702201 A CN 2007100702201A CN 200710070220 A CN200710070220 A CN 200710070220A CN 101099485 B CN101099485 B CN 101099485B
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Abstract
The present invention relates to a pesticide composite. It is characterized by that it contains (by wt%) 0.2-10% of fipronil and 10-60% of cyanophos, and can be used for effectively controlling rice pests of striped rice borer, brown-back rice plant hopper and rice leaf roller, etc. and can obtain good controlling effect.
Description
Technical field
The invention belongs to technical field of compounded pesticide, be specially the Pesticidal combination of a kind of fluorine worm nitrile and cynock.
Background technology
In recent years; Paddy rice " two move insect "---rice leaf roller and rice fulgorid (being mainly brown planthopper and white-backed planthopper) be big continuously generation and outburst in rice district, China south; The initial population quantity of insects such as the striped rice borer that survives the winter in this locality, paddy stem borer, pink rice borer and small brown rice planthopper is also because of the change of rice district cropping system; To the drug-fast enhancing of some insecticide and winter, climate was warm partially etc. former thereby go up significantly year after year, constituted serious threat for the Rice Production of China.Fluorine worm nitrile (Fipronil) is the major product that is used for the rice grub control that Bayer crop science company produces, and has applied for patent protection in China, and the patent No. is ZL88103601.3.The special suspending agent of its preparation 5% sharp strength obtained interim registration in 1994 on China paddy rice, registration number is LS94007, and calendar year 2001 changes the registration method for expressing, and registration number is LS2001819, had carried out formal registration in 2001 again, and registration number is PD20070007.Facts have proved of China's rice district large scale application; Fluorine worm nitrile preparation (mainly being the special suspending agent of 5% sharp strength) all has good control efficiency to insects such as rice grub such as rice gall midge, rice thrips, rice leaf roller, striped rice borer, rice fulgorid, oryza chinensis, in 2005 and 2006 huge effect has been brought into play in the further harm of inhibition brown planthopper especially.But because fluorine worm nitrile preparation is undesirable to the control efficiency of the pink rice borer on the paddy rice, use the rice district in 3～4 years at fluorine worm nitrile, the relative scale of pink rice borer population rises very fast, and Rice Production is had bigger potential threat.Some place is like the Wenzhou City in south, Zhejiang, owing to too much rely on fluorine worm nitrile; For a long time continuously in order to control striped rice borer and rice fulgorid; Cause striped rice borer that it has been produced the pesticide resistance of height,, the control efficiency of striped rice borer is obviously descended though usage amount increases.Simultaneously because fluorine worm nitrile is poor slightly to the quick-acting of paddy rice primary pest, adds on the high side and the toxicity height of fishes and shrimps has also been influenced applying of it.
In order to give full play to advantages such as the fipronil insecticidal spectrum is wide, high to paddy rice primary pest activity, consumption is few, the lasting period is long; Overcome that use cost is higher, quick-acting difference and use continuously and be prone to cause insect to develop immunity to drugs and to drawbacks such as the control efficiency of nocturnal moth class insect such as pink rice borer are relatively poor; Make fluorine worm nitrile adapt to China rice grub control market better, the bigger effect of performance in the rice disease and pest integrated control.Select for use China have at present certain production scale, use cost lower, the known agricultural chemicals of people and animals' (comprising fish, honeybee) low toxicity is carried out reasonably composite with it, filter out the important topic that the tangible insecticides of synergy becomes current pesticide industry.
Fluorine worm nitrile (Fipronil, have another name called the special Regent of sharp strength); Chemical name is: (RS)-5-amino-1-(2,6-two chloro-a, a; The a-trifluoromethyl-)-4-trifluoromethyl sulfinyl pyrazoles-3-nitrile; Molecular formula: C12H4Cl2F6N4OS is known substance, is produced by Bayer crop science company.It is a kind of novel Phenylpyrazole insecticides, thus its mechanism of action be with insect nerve center cell membrane on GABA receptor combine to block the nerve center cell chloride channel interference insect central nervous system normal function and cause insect death.Insecticidal spectrum is wide, and various insects such as Homoptera, orthoptera, Semiptera, thrips and coleoptera are had stomach toxicity, action of contace poison and certain systemic function is arranged.
Cynock (Cyanophos), chemical name is: O, O-dimethyl-O-(4-cyano-phenyl) phosphorothionate, molecular formula: C9H10NO3PS is known substance, this chemical Co., Ltd produces by the Zhejiang standing grain, is a kind of organic phosphor desinsection, miticide of low toxicity.Have characteristics such as insecticidal spectrum is wide, speed of action fast, the longevity of residure is long.It insects such as rice leaf roller, snout moth's larva, rice fulgorid, rice leafhopper, mythimna separata, aphid, cabbage caterpillar and two spotted spider mite are had tag, stomach toxicity and systemic action.
Summary of the invention
To the problems referred to above that exist in the prior art; The object of the invention is according to the actual insect pest situation of China paddy rice; Take all factors into consideration the optimum synergistic effect and the production cost of fluorine worm nitrile and cynock, the technical scheme of long, lower-cost Pesticidal combination of wide, quick-acting good, lasting period of a kind of insecticidal spectrum is provided.
The present invention be achieved in that according to fluorine worm nitrile and cynock separately characteristic its carry out reasonably compositely, through series of indoor biologicall test and field trial, filter out the tangible combination matching of synergy.
The Pesticidal combination of described fluorine worm nitrile and cynock is characterized in that containing the component of following weight percent: fluorine worm nitrile 0.2～10%, cynock 10～60%.
The Pesticidal combination of described fluorine worm nitrile and cynock, the content that it is characterized in that fluorine worm nitrile is 0.2～6%, the content of cynock is 25～45%.
The Pesticidal combination of described fluorine worm nitrile and cynock, the content that it is characterized in that fluorine worm nitrile is 0.2～5%, the content of cynock is 30～45%.
The Pesticidal combination of described fluorine worm nitrile and cynock, the content that it is characterized in that fluorine worm nitrile is 0.2～4%, the content of cynock is 35～40%.
The Pesticidal combination of described fluorine worm nitrile and cynock, the content that it is characterized in that fluorine worm nitrile is 0.2～3%, the content of cynock is 37～40%.
The Pesticidal combination of described fluorine worm nitrile and cynock, the content that it is characterized in that fluorine worm nitrile is 0.25～2.25%, the content of cynock is 37.75～39.75%.
The Pesticidal combination of this fluorine worm nitrile and cynock can be made into missible oil by existing routine techniques, adds organic solvent and emulsifier in the promptly former medicine; Also can be made into aqueous emulsion, promptly former medicine adds organic solvent, cosolvent, wetting agent, diffusant, emulsifier and water etc.
In the patent application of the present invention, unless otherwise indicated, all percentages all are weight percentage.
The Pesticidal combination of above-mentioned fluorine worm nitrile and cynock has best synergistic function, and the co-toxicity coefficient of striped rice borer is reached 181.8～311.5; Its insecticidal spectrum is wide; Quick-acting and lasting effect are good, greatly reduce the production and the use cost of agricultural chemicals, than single mu with fluorine worm nitrile with cost decline more than 50%; Rice grub striped rice borer, brown planthopper, rice leaf roller and nocturnal moth class insect such as pink rice borer all there are good control efficiency, and rice growth is had no adverse reaction.
Embodiment
Below one five provide embodiment to prescription through filling a prescription, and combine Test Example that the present invention is done further explain.
Prescription one: fluorine worm nitrile 0.25%, cynock 39.75%
Prescription two: fluorine worm nitrile 0.75%, cynock 39.25%
Prescription three: fluorine worm nitrile 1.25%, cynock 38.75%
Prescription four: fluorine worm nitrile 1.75%, cynock 38.25%
Prescription five: fluorine worm nitrile 2.25%, cynock 37.75%
Test Example 1:
Composite dose of above-mentioned five fluorine worm nitrile cynocks and 80% fluorine worm nitrile water dispersant and 50% cynock missible oil with 3～4 age Chilo spp larvae be object, carry out biologicall test indoor, and compare with clear water, its test of pesticide effectiveness result sees table 1.Through calculating LC
50After the co-toxicity coefficient of trying to achieve see table 2:
Each handles the biological activity determination result to striped rice borer table 1
Table 240% fluorine worm nitrile cynock is to the co-toxicity coefficient of striped rice borer
| Handle | The toxicity regression line | LC 50 (mg/L) | 95% confidence interval | Co-toxicity coefficient |
| Cynock | Y＝0.3836+2.0064X | 199.94 | 133.65～299.07 | / |
| Fluorine worm nitrile | Y＝2.7480+1.7131X | 20.63 | 12.25～31.41 | / |
| Prescription one | Y＝1.5240+1.7223X | 104.30 | 68.451～195.30 | 181.8 |
| Prescription two | Y＝2.0962+1.5128X | 83.08 | 50.54～146.48 | 206.9 |
| Prescription three | Y＝2.7449+1.3241x | 50.48 | 21.89～83.81 | 311.5 |
| Prescription four | Y＝2.1822+1.5951x | 58.42 | 32.51～90.71 | 248.0 |
| Prescription five | Y＝1.6221+1.9423x | 54.79 | 32.93～79.33 | 245.1 |
Mensuration result shows, five prescriptions all greater than 100, have obvious synergistic effect to the co-toxicity coefficient of Chilo spp larvae, and is wherein the highest with three the co-toxicity coefficient of filling a prescription, and is 311.5, and prescription four and five takes second place.Consider that from the lasting effect of reagent cost and medicament prescription three is as preferred.
Test Example 2:
Carry out the field control effectiveness test to striped rice borer early rice Tanaka, paddy rice is in late tillering state during test, and striped rice borer was the 2nd larva hatching Sheng phase in generation.Every mu of medication of 40% fluorine worm nitrile cynock missible oil (prescription three) 80 grams; Every mu of medication of 5% fluorine worm nitrile suspending agent (Bayer Cropscience N.V.'s production) 40 grams; Every mu of medication of 50% cynock missible oil (Zhejiang Prov HeBen pesticide Chemical Co., Ltd's production) 100 grams; Every mu of medication of 20% triazophos emulsifiable solution (Zhejiang Xinnong Chemical Co.,Ltd's production) 100 grams and clear water contrast, totally 5 processing, every processing repetition 3 times.The borer population alive of 50 clumps of investigation of every sub-district random sampling in 5 days Chilo spp larvae and dead borer population behind the medicine were investigated 200 clumps of rice tillering numbers and withered calculation in 16 days behind the medicine, calculated the withered heart rate of larval mortality, paddy rice and seedling protecting effect that each is handled respectively.Field control effect to the paddy field striped rice borer is as shown in table 3:
Composite dose of control of table 3 40% fluorine worm nitrile cynock paddy field striped rice borer effect
| Handle | Mu consumption (g) | Worm amount (head/clump) before the medicine | Worm amount (head/clump) behind the medicine | Lethality (%) | Proofread and correct preventive effect (%) | Withered heart rate (%) | Seedling protecting effect (%) |
| Composite dose of 40% fluorine worm nitrile cynock | 80 | 3.53 | 0.28 | 92.20 | 90.44 | 0.4 | 95.40 |
| 5% fluorine worm nitrile suspending agent | 40 | 3.10 | 0.20 | 93.55 | 92.10 | 0.5 | 94.05 |
| 50% cynock missible oil | 100 | 2.83 | 0.38 | 86.73 | 83.74 | 1.8 | 78.57 |
| 20% triazophos emulsifiable solution | 100 | 3.18 | 0.68 | 78.74 | 73.95 | 3.3 | 60.71 |
| The clear water contrast | / | 3.40 | 2.78 | 18.38 | 8.4 | / |
Through to composite dose of 40% fluorine worm nitrile cynock, 5% fluorine worm nitrile suspending agent, 50% cynock missible oil and 20% triazophos emulsifiable solution to the field trial of paddy field striped rice borer control efficiency, can be found out by table 3: 5 days correcting controling effects to larva are respectively 90.44%, 92.10%, 83.74% and 73.95% behind the medicine.16 days seedling protecting effect is respectively 95.40%, 94.05%, 78.57% and 60.71% behind the medicine.The result shows that composite dose 80 of 40% fluorine worm nitrile cynock gram treatment region is best with the control efficiency that 5% fluorine worm nitrile suspending agent 40 restrains treatment regions to the larva control efficiency of striped rice borer; Seedling protecting effect is 95.40% the highest with composite dose of treatment region of 40% fluorine worm nitrile cynock then respectively, but do not have significant difference between two processing.Observing the above-mentioned medicament of respectively handling continuously through duration of test does not all have obvious influence to rice growth, and the treatment region later stage heading that fluorine worm nitrile cynock is composite dose is neat.
Replace prescription three respectively by prescription one, prescription two, prescription four, prescription five and carry out above-mentioned test, basically identical as a result.
Test Example 3:
For composite dose of control efficiency to pink rice borer of clear and definite 40% fluorine worm nitrile cynock, carry out in the wild rice stem field of test Wucheng District in the Jinhua.Because fluorine worm nitrile is used in the wild rice stem field for a long time, the striped rice borer population has obtained effective control, and causes the pink rice borer population on the wild rice stem to rise gradually.Wild rice stem is in the pregnant hay initial stage during field trial, and striped rice borer and pink rice borer population mix takes place, and larva generation ratio is 11: 89, and promptly the snout moth's larva in wild rice stem field is main with pink rice borer.Chemicals treatment is with Test Example 2, but only investigate before 5 clumps of wild rice stems medicine-feedings with medicine after 3 days worm amount.To wild rice stem field striped rice borer and pink rice borer mixed population control efficiency as shown in table 4:
The effect of table 440% fluorine worm nitrile cynock composite dose of control wild rice stem field striped rice borer and pink rice borer mixed population
The result shows; Still be high instar larvae no matter to low age; Composite dose of 40% fluorine worm nitrile cynock is the processing that the control efficiency of main wild rice stem field striped rice borer and pink rice borer mixed population all is significantly higher than 5% fluorine worm nitrile suspending agent, 50% cynock missible oil and 20% triazophos emulsifiable solution to pink rice borer, respectively up to 93.15% and 84.81%.And to striped rice borer efficiently 5% fluorine worm nitrile suspending agent to being that the control efficiency of main mixed population only is respectively 66.77% and 50.47% with the pink rice borer.
Replace prescription three respectively by prescription one, prescription two, prescription four, prescription five and carry out above-mentioned test, basically identical as a result.
Test Example 4 and 5:
In order to verify composite dose of control efficiency of self-control 40% fluorine worm nitrile cynock, carry out small plot experiment suburb, Hangzhou double cropping late rice and single cropping rice rice field respectively to brown planthopper rice and leaf-roller.Control efficiency test to brown planthopper was carried out at the double cropping late rice booting initial stage, and the nymph more than 95% is in 2-3 age.The control of rice leaf roller test was carried out in single cropping rice late tillering state, and this moment, the 1-2 instar larvae accounted for 84%, and other is the 3-4 instar larvae.Every sub-district area is 30m
2, establish 4 pesticide-treated and contrast every processing repetition 3 times with clear water.Workers and peasants-12 type manual sprayer, spray sheet aperture is 1.2mm, water consumption is a 40kg/ mu.Observing each medicament more simultaneously in process of the test has or not poisoning to take place to paddy rice.
Composite dose of 40% fluorine worm nitrile cynock (prescription three), 5% fluorine worm nitrile suspending agent, 50% cynock missible oil, 25% buprofezin wetting powder and blank control brown planthopper field control effectiveness test, its result such as table 5:
The effect of composite dose of control of table 5 40% fluorine worm nitrile cynock brown planthopper
Field test results shows (table 5): the correcting controling effect of 1 day each treatment region is respectively 91.87%, 70.55%, 64.43% and 23.51% behind the medicine, and the correcting controling effect of 5 days each treatment regions is respectively 91.57%, 90.65%, 65.61% and 76.24% behind the medicine.Presentation of results; Composite dose 80 gram of 1 day 40% fluorine worm nitrile cynock is significantly higher than the control efficiency of 5% fluorine worm nitrile suspending agent, 40 grams to brown planthopper to the control efficiency of brown planthopper behind the medicine; But composite dose of control efficiency with 5% fluorine worm nitrile suspending agent of 5 days 40% fluorine worm nitrile cynocks is identical behind the medicine; All be higher than 90%, but and the control efficiency of 25% buprofezin wet-milling and 50% cynock missible oil treatment region is undesirable.
Composite dose of 40% fluorine worm nitrile cynock, 5% fluorine worm nitrile suspending agent, 50% cynock missible oil, 40% chlorpyrifos ec and clear water contrast control rice leaf roller field control effectiveness test, its result of the test is seen table 6.Testing the result shows: it is all the highest to the control efficiency of rice leaf roller that composite dose 80 of 40% fluorine worm nitrile cynock gram is handled behind medicine 3 days and 7 days, is respectively 92.91% and 97.65%; 5% fluorine worm nitrile suspending agent mu takes second place with the control efficiency of 40 gram treatment regions, is respectively 83.18% and 90.14%; And 50% cynock missible oil mu is the poorest with two treatment regions of 100 grams and 40% chlorpyrifos ec, 100 grams, all is lower than 90%.It is thus clear that composite dose of fluorine worm nitrile cynock also has good control efficiency to rice leaf roller.
The field test effect of composite dose of control of table 6 40% fluorine worm nitrile cynock rice leaf roller
Single with 5% fluorine worm nitrile suspending agent mu medication, 40 grams, pesticide cost is 6.0 yuan.If in order to composite dose of medication of mu 40% fluorine worm nitrile cynock 80 gram meters, pesticide cost is about 2.4 yuan, descend more than 50% with cost than single mu with fluorine worm nitrile.
Replace prescription three respectively by prescription one, prescription two, prescription four, prescription five and carry out above-mentioned test, basically identical as a result.
Claims (2)
1. the purposes of the Pesticidal combination of fluorine worm nitrile and cynock in control pink rice borer and brown planthopper, wherein said Pesticidal combination contains the component of following weight percent: fluorine worm nitrile 0.2～3%, 37～40% of cynock.
2. the described purposes of claim 1, wherein the content of fluorine worm nitrile is 0.25～2.25%, the content of cynock is 37.75～39.75%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007100702201A CN101099485B (en) | 2007-07-27 | 2007-07-27 | Fipronil and canephor insecticide composition |
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| CN2007100702201A CN101099485B (en) | 2007-07-27 | 2007-07-27 | Fipronil and canephor insecticide composition |
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| CN101099485A CN101099485A (en) | 2008-01-09 |
| CN101099485B true CN101099485B (en) | 2012-01-04 |
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| CN105994349A (en) * | 2016-05-31 | 2016-10-12 | 刘慎权 | Composition for preventing and treating Hydrellia griseola and preparation method thereof |
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| 无.柳江县药剂防治大龄稻纵卷叶螟试验获得成功.《广西农业信息网》.2004,http://www.gxny.gov.cn/web/2004-07/23537.htm. * |
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