CN103704262B - A kind of Pesticidal combination containing pymetrozine - Google Patents
A kind of Pesticidal combination containing pymetrozine Download PDFInfo
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- CN103704262B CN103704262B CN201310746597.XA CN201310746597A CN103704262B CN 103704262 B CN103704262 B CN 103704262B CN 201310746597 A CN201310746597 A CN 201310746597A CN 103704262 B CN103704262 B CN 103704262B
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- pesticidal combination
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- pymetrozine
- imicyafos
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- 239000005925 Pymetrozine Substances 0.000 title claims abstract description 55
- QHMTXANCGGJZRX-WUXMJOGZSA-N pymetrozine Chemical compound C1C(C)=NNC(=O)N1\N=C\C1=CC=CN=C1 QHMTXANCGGJZRX-WUXMJOGZSA-N 0.000 title claims abstract description 55
- 230000000361 pesticidal effect Effects 0.000 title claims abstract description 43
- 239000000203 mixture Substances 0.000 claims abstract description 33
- PPCUNNLZTNMXFO-ACCUITESSA-N Imicyafos Chemical group CCCSP(=O)(OCC)N1CCN(CC)\C1=N/C#N PPCUNNLZTNMXFO-ACCUITESSA-N 0.000 claims abstract description 29
- 239000003905 agrochemical Substances 0.000 claims abstract description 14
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- 239000000843 powder Substances 0.000 claims abstract description 12
- 239000004480 active ingredient Substances 0.000 claims abstract description 11
- 238000009736 wetting Methods 0.000 claims abstract description 10
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- 239000004562 water dispersible granule Substances 0.000 claims abstract description 9
- 239000000375 suspending agent Substances 0.000 claims abstract description 5
- 238000002360 preparation method Methods 0.000 claims description 15
- 238000009472 formulation Methods 0.000 claims description 8
- 239000002131 composite material Substances 0.000 claims description 4
- 239000000470 constituent Substances 0.000 claims 3
- 238000000034 method Methods 0.000 abstract description 15
- 239000002917 insecticide Substances 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 8
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Abstract
The present invention relates to a kind of Pesticidal combination containing pymetrozine, its active ingredient is Imicyafos and pymetrozine two yuan of mixtures, and the ratio of weight and number of two kinds of active ingredients is 1 ~ 50: 55 ~ 1, and preferred weight portion rate is 5 ~ 25: 35 ~ 5; The parts by weight content that in Pesticidal combination, active ingredient is total is 1% ~ 80%; preferred weight number content is 5% ~ 40%; all the other are allow in agricultural chemicals to use and acceptable auxiliary element, and can be prepared into wetting powder, suspending agent, microemulsion, aqueous emulsion and water dispersible granules by known method, it is wide that the present composition has effect field; insecticide efficiency is high; and consumption is few, preventive effect is high, residual few; lasting period is long, is conducive to environmental protection.
Description
Technical field
The present invention relates to technical field of pesticide combination, be specifically related to a kind of Pesticidal combination containing pymetrozine.
Background technology
Imicyafos (AKD-3088) is a kind of cyanamide heterocyclic organic matter, it is combined by the sub-imidazolidine of cyano group of asymmetric organic phosphor and nicotinic insecticide, can be used for the crops such as radish, carrot, strawberry, eggplant, tomato, cucumber, muskmelon, watermelon, sweet potato and potato, its chemical structural formula is:
Pymetrozine, another name: pyrazinones, English name: pymetrozine, molecular formula: C
10h
11n
50, chemical name: 4,5-dihydro-6-methyl-4-(3-pyridine methylene amino)-1,2,4-3 (2H)-one, has efficient, low toxicity, high selectivity, the feature such as environmentally friendly, meets current Agrochemicals direction.Its structural formula is:
Its mode of action is unique, the influent pH of major effect insect, make its food refusal and dead, its preparation can be used for preventing and treating most of homoptera pest, especially aphid section, Aleyrodidae, Cicadellidae and Delphacidae insect, be applicable to vegetables, ornamental plants, fruit tree, oranges and tangerines, paddy rice, cotton and multiple field crop, important aphids all on potato can also be controlled to reach the generation controlling potato virus disease.This medicine can penetrate in plant leaf blade very soon, and the longevity of residure reaches more than 1 month, without cross resistance, and to natural enemy high safety.In addition, pymetrozine and main metabolites thereof the leaching in soil is very low, exists only in topsoil, very little to the possibility of pollution of underground water under recommend use dosage.
Pymetrozine is after Long-Time Service, and the resistance of insect to it strengthens year by year, and pesticide dosage is constantly increased, and causes the adverse consequencess such as high poison, consumption are large, residual many, drug effect is poor.And use the insecticide of one-component, easily causing insect to develop immunity to drugs is the problem demanding prompt solution faced in current Pesticide use process, and formulate that new and effective Pesticidal compound has high input, the cycle is long, research strength requirement is higher, does not meet the present situation of agricultural chemicals enterprise of current China.And between agricultural chemicals between compositely can solve that agricultural chemicals single dose toxicity is large, the problem of weak effect, less investment again, R&D cycle short applicable domestic agricultural chemicals enterprise present situation, and the mutual use between different agricultural chemicals can the drug-fast generation of retarding action thing, have ideal result of use, therefore between the different mechanism of action, agricultural chemicals composite is the study hotspot of current pesticide field.
Summary of the invention
According to the deficiencies in the prior art; the present invention proposes a kind of Pesticidal combination containing pymetrozine, said composition contains A, B two kinds of effective active components, and component A is selected from imicyafos; B is selected from pymetrozine; it is wide that the present composition has effect field, and insecticide efficiency is high, and consumption is few; preventive effect is high; residual few, the lasting period is long, is conducive to environmental protection.
The present invention be a kind of with imicyafos and pymetrozine for active ingredient carries out the Pesticidal combination preparation of two yuan of mixtures, wherein in Pesticidal combination of the present invention, the ratio of weight and number of active ingredient imicyafos and pymetrozine is 1 ~ 50: 1 ~ 55, on the basis of test recipe screening targetedly, the ratio of weight and number of active ingredient imicyafos and pymetrozine can be preferably 5 ~ 25: 5 ~ 35.
The formulations of pesticide that the preparation method of agricultural insecticide composition field of pesticide preparation of the present invention can be prepared into are wetting powder, suspending agent, microemulsion, aqueous emulsion and water dispersible granules, in preparation, active ingredient gross weight accounts for the portion rate of gross weight in preparation is 1% ~ 80%, on the basis of test recipe screening targetedly, the gross weight of active ingredient imicyafos and pymetrozine can be accounted for the ratio of gross weight in preparation and be preferably 5% ~ 40%, all the other compositions are usual auxiliaries in agricultural chemicals.
When above-described Pesticidal combination is microemulsion, in preparation, the ratio of weight and number of each component is:
The concrete production stage of this microemulsion is: former medicine imicyafos, pymetrozine cosolvent are dissolved completely, then adds other compositions such as emulsifier, antifreezing agent stabilizing agent, and Homogeneous phase mixing, finally adds water, can be made into microemulsion after fully stirring.
When above-described Pesticidal combination is wetting powder, in preparation, the ratio of weight and number of each component is:
The concrete procedure of processing of this Pesticidal combination wetting powder is: by above-mentioned formula by active principle A and active principle B and the mixing of dispersant, wetting agent and filler, uniform stirring in stirred tank, mixing after airslide disintegrating mill, namely can be made into the wetting powder of the present composition.
When above-described Pesticidal combination is suspending agent, in preparation, the ratio of weight and number of each component is:
The concrete production stage of this suspending agent is for first to mix other auxiliary agents, mix through high speed shear, add active principle A and active principle B, abrading-ball 2 ~ 3 hours in ball crusher, make a diameter all at below 5mm, the aqueous suspension formulations of obtained Pesticidal combination of the present invention.
When above-described Pesticidal combination is aqueous emulsion, in preparation, the ratio of weight and number of each component is:
The concrete production stage of this aqueous emulsion is: first former medicine active principle A and active principle B, solvent and emulsifier, cosolvent are added together, and makes to be dissolved into uniform oil phase; By part water, antifreeze, other the insecticides adjuvant such as antimicrobial mixes uniformly aqueous phase; While high-speed stirred, oil phase is added aqueous phase in a kettle., slowly add water until reach phase inversion point, open clipper and carry out high speed shear, and add remaining water, shear about half an hour, form the aqueous emulsion of oil-in-water type.The i.e. aqueous emulsion of obtained Pesticidal combination of the present invention.
When above-described Pesticidal combination is water dispersible granules, in preparation, the ratio of weight and number of each component is:
The concrete procedure of processing of this Pesticidal combination water dispersible granules is: active principle A, active principle B and dispersant, wetting agent, disintegrant and filler are mixed by above-mentioned formula, pulverize with micro jet, through mediating, then add in fluidized-bed granulation dryer and carry out through sample analysis after granulation, drying, screening, be i.e. the water dispersible granules of obtained Pesticidal combination of the present invention.
Described emulsifier is selected from least one in calcium dodecyl benzene sulfonate and aliphatic acid polyethenoxy ether, alkylphenol polyoxyethylene sulfosuccinate, styrylphenol polyoxyethylene ether, polyoxyethylene nonylphenol ether, castor oil polyoxyethylene ether, aliphatic acid polyethenoxy base ester, polyoxyethylene aliphatic alcohol ether.
Described solvent is at least one in dimethylbenzene or biodiesel, toluene, diesel oil, methyl alcohol, ethanol, n-butanol, isopropyl alcohol, turpentine oil, solvent naphtha, dimethyl formamide, dimethyl sulfoxide (DMSO), water equal solvent.
Described dispersant is selected from least one in polycarboxylate, lignosulfonates, alkylphenol polyoxyethylene formaldehyde condensation products sulphate, alkyl benzene sulfonate calcium salt, naphthalene sulfonic acid-formaldehyde condensation product sodium salt, alkylphenol polyoxyethylene, aliphatic amine polyoxyethylene ether, polyoxyethylene carboxylate, fatty acid glyceride APEO.
Described wetting agent is selected from lauryl sodium sulfate, calcium dodecyl benzene sulfonate, at least one pulled open in powder copper rosinate X., wetting and penetrating agent F, alkylnaphthalene sulfonate, polyoxyethylene tri-styryl phosphenylic acid salt, spaonin powder, silkworm excrement, soapberry powder.
Described disintegrant is selected from least one in bentonite, urea, ammonium sulfate, aluminium chloride, citric acid, succinic acid, sodium bicarbonate.
Described thickener is selected from least one in xanthans, CMC, hydroxyethylcellulose, methylcellulose, Magnesiumaluminumsilicate, polyvinyl alcohol.
Described stabilizing agent is selected from least one in sodium citrate, resorcinol.
Described antifreezing agent is selected from least one in ethylene glycol, propane diols, glycerine.
Described defoamer is selected from silicone oil, silicone compound, C
10-20saturated fat acid compounds, C
8-10at least one in aliphatic alcohols compound.
Described filler is selected from least one in kaolin, diatomite, bentonite, attapulgite, white carbon, starch, precipitated calcium carbonate.
Pesticidal combination of the present invention can prevent and treat nematoda, etc. the various insects such as sufficient class, coleoptera class pest, Lepidoptera class pest, gastropod, orthoptera pest, plant parasitic acarid class, Thysanoptera, Diptera pest, Hymenoptera insect, hidden wing order insect, Anoplura insect, Isoptera insect, Hemipteran pest, damp insects, centipede insects, thousand-legger class.Especially to destroying the insect of agriculture horticultural crop and trees etc. in soil, destroying the insect of the seed of agriculture horticultural crop and trees, such as nematoda, etc. sufficient class, coleoptera class pest, Lepidoptera class pest, gastropod, orthoptera pest, plant parasitic acarid class, Hemipteran pest preventive effect remarkable.
The above nematode pests comprises the pratylenchus classes such as pratylenchus, pseudo-Pratylenchidae, Lu Si Pratylenchidae, disability Pratylenchidae, the Cyst nematode such as soybean cyst nematode Heterodera glycines, globodera rostochiensis class, the root-knot nematode such as peanut root-knot nematode, Meloidogyne incognita class, the Aphelenchoidea classes such as aphelenchoides besseyi, leaf bud nematode, species of Tylenchorhynchus Nematodes class, loop wire insects, needlework insects, long capsule nematoda, burr nematoda, nematode on strawberry, pine wood nematode.All favorable effect is had in addition to insects such as aphid, leafhopper, plant hopper, chrysomelid, wireworm, cutworm, diamond-back moth, imported cabbageworm, rice thripses.
Agricultural insecticide composition of the present invention is especially to anti-eliminate aphis section, Aleyrodidae, Cicadellidae and Delphacidae insect, and the various pests such as especially various insects, pear sucker, cabbage caterpillar, diamond-back moth, beet armyworm, apple leaf miner, leaf miner, Liriomyza, Americal rice leaf miner and vegetables trialeurodes vaporariorum have efficient effect.
Pesticidal combination of the present invention compares similar medicament other advantages a lot, first, by pymetrozine and novel pesticide imicyafos composite, improve the insecticide efficiency of pymetrozine, delay the resistance of insect to novel pesticide imicyafos, compare respective single dose sphere of action wider, improve disinsection efficiency; The second, delay the generation of pest resistance to insecticide, decreased agricultural chemicals Reusability number of times, reduce Pesticide use amount, reduce agricultural cost; 3rd, the residual quantity of this Pesticidal combination is lower, more friendly to environment, is significant to the safe edible of agricultural products.
Embodiment:
In order to make object of the present invention, technical scheme and advantage clearly understand, the following specific embodiment of the present invention is described, but the present invention is only limitted to absolutely not these examples.The method that the present invention adopts indoor bioassay and field trial to combine, if no special instructions, the ratio (comprising percentage) below mentioned is all ratio of weight and number.
Embodiment 1: by imicyafos10 part, pymetrozine 15 parts, lignosulfonates 7 parts, lauryl sodium sulfate 10 parts and the mixing of 68 parts, diatomite, uniform stirring in stirred tank, mixing after airslide disintegrating mill, i.e. the wetting powder of obtained Pesticidal combination of the present invention.
Embodiment 2: by imicyafos5 part, pymetrozine 25 parts, alkylphenol polyoxyethylene 9 parts, oxygen ethene triphenylethylene phosphenylic acid salt 14 parts and bentonite 57 parts mixing, uniform stirring in stirred tank, mixing after airslide disintegrating mill, i.e. the wetting powder of obtained Pesticidal combination of the present invention.
Embodiment 3: by imicyafos15 part, pymetrozine 10 parts, dispersant 8 parts, wetting agent 15 parts and filler 52 parts mixing, uniform stirring in stirred tank, is mixing after airslide disintegrating mill, the i.e. wetting powder of obtained Pesticidal combination of the present invention.
Embodiment 4: by alkylphenol polyoxyethylene 10 parts, glycerine 2.5 parts, CMC 4.5 parts, silicone oil 1 part, the mixing of 60 parts, water, mix through high speed shear, add imicyafos14 part, pymetrozine 12 parts successively, abrading-ball 2 ~ 3 hours in ball crusher, make a diameter all at below 5mm, the aqueous suspension formulations of obtained Pesticidal combination of the present invention.
Embodiment 5: by dispersant 11 parts, antifreezing agent 2 parts, thickener 3 parts, defoamer 1 part, the mixing of 68 parts, water, mix through high speed shear, add imicyafos10 part, pymetrozine 15 parts successively, abrading-ball 2 ~ 3 hours in ball crusher, make a diameter all at below 5mm, the aqueous suspension formulations of obtained Pesticidal combination of the present invention.
Embodiment 6: by dispersant 8 parts, antifreezing agent 2 parts, thickener 4 parts, defoamer 0.5 part, the mixing of 62 parts, water, mix through high speed shear, add imicyafos16 part, pymetrozine 8 parts successively, abrading-ball 2 ~ 3 hours in ball crusher, make a diameter all at below 5mm, the aqueous suspension formulations of obtained Pesticidal combination of the present invention.
Embodiment 7: imicyafos25 part, pymetrozine 5 parts, 15 parts, turpentine oil, castor oil polyoxyethylene ether 6 parts, resorcinol 8 parts are mixed, is dissolved into uniform oil phase; Part water, propane diols 2 parts, silicone compound 1 part are mixed uniformly aqueous phase; While high-speed stirred, oil phase is added aqueous phase in a kettle., add polyvinyl alcohol 4 parts, slowly add water until reach phase inversion point, open clipper and carry out high speed shear, and add remaining water and supply 100 parts, shear about half an hour, form the aqueous emulsion of oil-in-water type.The i.e. aqueous emulsion of obtained Pesticidal combination of the present invention.
Embodiment 8: imicyafos10 part, pymetrozine 25 parts, solvent 20 parts, emulsifier 8 parts, stabilizing agent 10 parts are mixed, is dissolved into uniform oil phase; Part water, antifreezing agent 1 part, defoamer 2 parts are mixed uniformly aqueous phase; While high-speed stirred, oil phase is added aqueous phase in a kettle., add thickener 3 parts, slowly add water until reach phase inversion point, open clipper and carry out high speed shear, and add remaining water and supply 100 parts, shear about half an hour, form the aqueous emulsion of oil-in-water type.The i.e. aqueous emulsion of obtained Pesticidal combination of the present invention.
Embodiment 9: imicyafos8 part, pymetrozine 17 parts, solvent 20 parts, emulsifier 10 parts, stabilizing agent 8 parts are mixed, is dissolved into uniform oil phase; Part water, antifreezing agent 1 part, defoamer 2 parts are mixed uniformly aqueous phase; While high-speed stirred, oil phase is added aqueous phase in a kettle., add thickener 3 parts, slowly add water until reach phase inversion point, open clipper and carry out high speed shear, and add remaining water and supply 100 parts, shear about half an hour, form the aqueous emulsion of oil-in-water type.The i.e. aqueous emulsion of obtained Pesticidal combination of the present invention.
Embodiment 10: imicyafos18 part, pymetrozine 8 parts, aliphatic amine polyoxyethylene ether 10 parts, alkylnaphthalene sulfonate 10 parts, 4 parts, aluminium chloride and bentonite 53 parts are mixed, pulverize with micro jet, through mediating, then add in fluidized-bed granulation dryer and carry out through sample analysis after granulation, drying, screening, be i.e. the water dispersible granules of obtained Pesticidal combination of the present invention.
Embodiment 11: imicyafos5 part, pymetrozine 20 parts, dispersant 10 parts, wetting agent 10 parts, disintegrant 5 parts and filler 50 parts are mixed, pulverize with micro jet, through mediating, then add in fluidized-bed granulation dryer and carry out through sample analysis after granulation, drying, screening, be i.e. the water dispersible granules of obtained Pesticidal combination of the present invention.
Embodiment 12: imicyafos10 part, pymetrozine 18 parts, dispersant 8 parts, wetting agent 12 parts, disintegrant 3 parts and filler 49 parts are mixed, pulverize with micro jet, through mediating, then add in fluidized-bed granulation dryer and carry out through sample analysis after granulation, drying, screening, be i.e. the water dispersible granules of obtained Pesticidal combination of the present invention.
Embodiment 13: former medicine imicyafos15 part, pymetrozine 12 parts are dissolved completely with cosolvent, add other compositions such as aliphatic acid polyethenoxy base ester 12 parts, ethylene glycol 3 parts, sodium citrate 4 parts, resorcinol 4 parts again, Homogeneous phase mixing, finally add water, after fully stirring, can microemulsion be made into.
Embodiment 14: former medicine imicyafos20 part, pymetrozine 3 parts are dissolved completely with cosolvent, then add other compositions such as emulsifier 11 parts, antifreezing agent 2 parts, stabilizing agent 7 parts, Homogeneous phase mixing, finally adds water, can be made into microemulsion after fully stirring.
Embodiment 15: former medicine imicyafos8 part, pymetrozine 10 parts are dissolved completely with cosolvent, then add other compositions such as emulsifier 6 parts, antifreezing agent 2 parts, stabilizing agent 10 parts, Homogeneous phase mixing, finally adds water, can be made into microemulsion after fully stirring.
Indoor biometrics screening and field experiment:
The method that the present invention adopts indoor bioassay and field trial to combine.If no special instructions, the ratio (comprising percentage) below mentioned is all mass ratio.
Determination of activity example:
(1) reagent agent
The former medicine of 95%imicyafos, Japanese agricultural chemicals company Agro-Kanesho, the former medicine of 98% pymetrozine, Shandong Zhanhua Tianyuan Fine Chemical Co., Ltd provides.
(2) for examination worm source
Indoor diamondback moth larvae of for many generations raising, indoor conditions: temperature (26 ± 2) DEG C, relative moisture 68% ± 5%, periodicity of illumination 16/8h (L/D).
(3) single dose assay method
Adopt dip method respectively two groups of former medicines all to be used a small amount of acetone solution, then be diluted to into the dense solution of 5 of equal difference with the Tween solution of 0.1%, be diluted in for subsequent use in beaker, and with clear water in contrast.
Diamondback moth larvae of the same size is flooded 5S in the liquid of leaching worm cage, and being placed on diameter after sucking unnecessary liquid is in the culture dish of 9cm, is placed with fresh vegetable leaf and adds a cover in ware.Every concentration process 10, repeats 4 times, if blank.Check lethality keep 24h in (27 ± 1) DEG C illumination box after, it is dead for touching polypide nonresponder by pulling needle.Lethality Abbott formula correction, then according to log concentration---lethality probit value analyzes (Bliss) method, obtains virulence regression equation and puts dead middle amount LC
50value.
(4) the joint toxicity measuring method of different ratio
According to the toxicity test result of single dose, by active ingredient 25% ratio of weight and number imicyafos: pymetrozine is respectively 5:20,8:17,11:14,14:11,17:8.
Adopt above-mentioned 1.3 methods to carry out toxicity test, calculate LC
50, and press abundant method calculating co-toxicity coefficient (CTC) of Sun Yun.Co-toxicity coefficient CTC, computing formula is as follows: (take imicyafos as standard agent, its toxicity index is 100):
The LC of toxicity index (the TI)=imicyafos of pymetrozine
50the LC of/pymetrozine
50× 100
The LC of actual toxicity index (the ATI)=imicyafos of M
50the LC of/M
50× 100
TI × P pymetrozine of TI × P imicyafos+ pymetrozine of theoretical toxicity index (the TTI)=imicyafos of M
TTI × 100 of the ATI/M of co-toxicity coefficient (the CTC)=M of M
In formula:
M is the mixture of pymetrozine and imicyafos different ratio
P pymetrozine is the ratio of pymetrozine shared by mixture
P imicyafos is the ratio of imicyafos shared by mixture
(5) toxicity test result and analysis
Table 1imicyafos, pymetrozine are to the indoor measurement result of diamond-back moth
As can be seen from the table, in the mixture of different proportion, its co-toxicity coefficient is all greater than 120, shows certain synergistic effect, wherein imicyafos: pymetrozine be 8: 17 synergistic effect the most obvious, co-toxicity coefficient is 186.02.Result of the test shows, pymetrozine, imicyafos two kinds of medicaments all have higher activity to diamond-back moth in room conditions, the result of the test of different proportion proportioning shows, by active ingredient imicyafos: when pymetrozine is 5:20,8:17,11:14,14:11,17:8, all show stronger synergistic effect, wherein with imicyafos: when pymetrozine is 8: 17, synergistic effect is best.Suggestion carries out further field control effectiveness test to the mixture preparation of suitable proportion about 8:17 scope, to evaluate its field practical application effect.
Field experiment: field experiment control rice pest
(1) test method
Test is carried out at the double-ridged horn in Luo Wan village, journey market town, Jianli County, Jingzhou City of Hubei Province, and experimental field soil is loam, middle fertility, and irrigation and drainage are convenient, and surrounding all plants double cropping rice.For before the medication of examination paddy rice, the rice is doing well.The Zhu little Ni ridge, minizone is in case string is filled with, and during dispenser, there is 3 ~ 4cm shoaling layer in field, water conservation 7d after medicine, tests four (2) for rice fulgorid low instar nymphs occurrence in peak period (September 6) medication in afternoon 1 time, to water 50kg/hm
2, secondly evenly slightly spray with workers and peasants 16 type knapsack hand sprayer, now paddy rice is in grouting mid-term, and field is mainly white-backed planthopper, is small brown rice planthopper, and 1 ~ 3 age nymph account for 90%.Dispenser same day is fine day, mean temperature of air 29.5 DEG C; After medicine, 7d is all without rain, weather on this test substantially without impact.
(2) control time and method
Investigate 5 times altogether, (September 6) investigation insect population radix before medicine, 2d (September 8) after medicine, 7d (September 13) after medicine, after medicine, 14d (September 20) investigates 1 time respectively.Take the parallel great-jump-forward random sampling 15 in every community point, 2 clumps often, totally 30 clumps of rice, clap with basin the borer population alive that method records white-backed planthopper, small brown rice planthopper respectively, then calculate its Rectifying efficacies (hereinafter referred to as preventive effect).
(3) drug effect computational methods
Live before Revision insect recluced rate (%)=(borer population of living after borer population one dispenser of living before dispenser)/dispenser borer population * l00.
Preventive effect (%)=(treatment region Revision insect recluced rate-check plot Revision insect recluced rate)/(100-check plot Revision insect recluced rate) * 100.
(4) poisoning investigation method
After medicine, 2,7,14d observe paddy growth situation, estimate medicament to paddy rice all without poisoning.
(5) field control effectiveness test result of the test
Table 2 treatment agent prevents and treats rice hoppers field control effectiveness test result
As can be seen from Table 2, the mixture of 25%imicyafos pymetrozine 8: 17 combines the successful preventing and treating rice hoppers and is better than 50% pymetrozine WG, 20%imicyafos SC contrast single dose, 25%imicyafos pymetrozine insecticidal effect of 7 days after medicine is respectively 92.11%, 94.96% and 93.83%, and insecticidal effect increases progressively along with the increase of consumption.In addition within the scope of test dose, plant growth is normal, and the poisoning phenomenon to paddy rice does not all appear in each treatment agent, illustrates that it is safe to paddy rice.
Claims (4)
1. the Pesticidal combination containing pymetrozine, it is characterized in that: this Pesticidal combination is for the composite composite preparation of active ingredient two yuan with A novel agrochemical Imicyafos and B pymetrozine, all the other components are usual auxiliaries in agricultural chemicals, and the structural formula of A novel agrochemical Imicyafos is:
In this Pesticidal combination, the ratio of weight and number of effective constituents A and B is for being respectively 5
:20,8
:17,11
:14,14
:11,17
:8.
2. a kind of Pesticidal combination containing pymetrozine according to claim 1, is characterized in that: in this Pesticidal combination, effective constituents A and B gross weight account for the percentage composition of total formulation weight amount is 1% ~ 80%.
3. a kind of Pesticidal combination containing pymetrozine according to claim 1, is characterized in that: in this Pesticidal combination, effective constituents A and B gross weight account for the percentage composition of total formulation weight amount is 5% ~ 40%.
4. a kind of Pesticidal combination containing pymetrozine according to claim 1, is characterized in that: the preparation formulation that Pesticidal combination of the present invention can be mixed with is wetting powder, suspending agent, microemulsion, aqueous emulsion and water dispersible granules.
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