CN1448054A - Insecticidal composition and its use - Google Patents

Abstract

The pesticide composite consists of chlorpyrifos 3-55 wt%, isoketazine 1.5-40 wt%, emulsifier 4-15 wt% and C6-C20 hydrocarbon or halohydrocarbon as organic solvent 10-50 wt% and has water as dispersing medium as well as, maybe, antifreezing angent and cosolvent. It has a CTC as high as 355, less organic solvent consumption, relatively high environment compatibility and low cost. It has specific effect on longitudinal leaf roller of rice, certain effect on cotton tetranychidae, aphid, cabbage worm and other pests as well as preventing effect on sheath and culm blight of rice, banded sclerotial blight of rice and microspheric rhizoctonia disease.

Description

Pesticidal combination and uses thereof

One, technical field

The present invention relates to a kind of Pesticidal combination and uses thereof, especially a kind of is the Pesticidal combination and the application thereof of main active ingredient with chlopyrifos.

Two, background technology

Chlopyrifos (English name chlorpyrifos), chemical name O, O-diethyl-O (3,5, the 6-trichloro-2-pyridyl) phosphorothionate, have another name called Le Siben (The Dow Agrosciences, LLC.'s trade name), pacify the people happy, gram is happy waits indefinitely, and is U.S. DOW chemical company in nineteen sixty-five development product at first, is a kind of efficient, wide spectrum, organic phosphor desinsection miticide that toxicity is low.Chlopyrifos is a utmost point broad spectrum pesticide, can prevent and treat on the ground and soil insect.Used proof in more than 20 year, working concentration does not increase, and insect does not have pesticide resistance substantially to it.Chlopyrifos mainly by tag, stomach toxicity and stifling 3 kinds of mode of action Pest Control.Insecticidal spectrum can be compared with acephatemet, but toxicity is more much lower than acephatemet, belongs to moderate toxicity.In organophosphorus insecticide, belong to low toxicity.Le Siben and soil organic matter adsorption capacity are extremely strong, and therefore outstanding to underground insect (black cutworm, wireworm, grub, termite, mole cricket etc.) preventive effect, the control phase is long.Can be widely used in numerous areas such as paddy rice, wheat, cotton, vegetables, fruit tree, tea tree, health, all effective to insects such as the control snout moth's larva of rice, leaf-roller, plant hopper, cotton tetranychid, aphid, cabbage caterpillar, diamond-back moth, the wild snout moth's larva of beans, two spotted spider mite, tea geometrid, wriggler, cockroaches, the application that at home and abroad relates to is extensive, is to substitute the comparatively ideal large-tonnage kind of high-toxic pesticide.Its structural formula is: R is methyl or ethyl

R is that ethyl then is called ethyl chlopyrifos (being called for short chlopyrifos), and R is that methyl is called chlorpyrifos-methyl, and widely used in China is the ethyl chlopyrifos.

Just because of the broad spectrum disinfestation characteristic of chlopyrifos and with respect to the lower toxicity of the contour malicious agricultural chemicals of methylamine phosphine, obtained development faster in China, chlopyrifos industrialization tackling key problem has been listed in country " 15 " brainstorm project.

Existing single agent of multiple chlopyrifos or complex preparation in the market, is that 01100515 application for a patent for invention discloses the composite of Imidacloprid and chlopyrifos as application number, and wooly aphis is had special preventive effect; Application number is that 01100511 application for a patent for invention discloses the composite of Avermectin and chlopyrifos, and pear sucker is had special preventive effect; Application number is that 00128287 application for a patent for invention discloses the composite of Hostathion and chlopyrifos, is mainly used in the control snout moth's larva of rice; Application number is that 98111820 application for a patent for invention discloses the composite to improve drug effect of chrysanthemum ester insecticide and chlopyrifos; Application number is the composite missible oil that forms that 98122085 application for a patent for invention discloses 5a,6,9,9a-hexahydro-6,9-methano-2,4 and chlopyrifos, and main purpose is to improve lasting effect; Application number is the composite missible oil that forms that 98122084 application for a patent for invention discloses dichlorvos and chlopyrifos, and main purpose is synergy; Application number is that 93120345 application for a patent for invention discloses the composite of parathion-methyl and phoxim and chlopyrifos, and co-toxicity coefficient is 570.6, is mainly used in preventing and kill off of cotton bollworm.Above-mentioned preparation adopts two or more insecticide and chlopyrifos to carry out composite bar none; Some still adopts country to list the high-toxic pesticide parathion-methyl of forbidding kind in; Though and the higher insecticide of prices such as chlopyrifos and chrysanthemum ester class carries out composite comparing with the single agent of chlopyrifos and has obtained some beneficial effects, has improved cost.

Rice leaf folder is a kind of migratory pest of Southeast Asia and Northeast Asia rice district hazard rice, in each provinces and regions of China distribution is arranged all, since the seventies, the frequency that main rice district takes place in the whole nation obviously increases, and has become one of the normal property sent out insect that influences Rice Production at present.Its control medicament with methylamine phosphine, desinsection list, dimehypo, sharp strength specially for the master.But the methylamine phosphine belongs to high-toxic pesticide, will progressively forbid; And sandworm toxin insecticides such as desinsection list, dimehypo are extensive use of above 10 years, various pests has produced pesticide resistance to it, disclose the progress of sandworm toxin insecticide resistance as " pesticide science and management " (the 22nd phase of calendar year 2001 (2) .P30-32), pointed out that old great grade finds that at 1989-1993 its resistance that dimehypo is produced is to increase by 23.5 times than 1989 in 1993 in to the resistance monitoring of diamond-back moth; Eliminate seed selection through the medicament that diamond-back moth was carried out 35 generations, its 4 instar larvae has increased by 51.52 times to the resistance of dimehypo; Resistance to Padan increases by 25.88 times." Hunan agricultural science " (2002 the 3rd phase P43-43) discloses because the long-term nereistoxin pesticide control rice leaf folder that adopts causes its resistance to increase, the situation that preventive effect descends.The specific drug that lacks desirable control rice leaf folder in the market.

Pesticidal preparations is a dissolve medium with the organic solvent generally, is generally substituted benzenes such as dimethylbenzene, toluene, and these organic solvents may pollute environment, to the toxic effect of people, animal, make these agricultural chemicals in use be subjected to certain restriction.So preparation is that the pesticidal preparations of matrix replacement (or part replaces) organic solvent is imperative with water, rises rapidly as microemulsion, aqueous emulsion, aqueous suspension, and will finally replace missible oil.

The purpose of this invention is to provide a kind of is the Pesticidal combination of main active ingredient with chlopyrifos, effective to insects such as the snout moth's larva of rice, plant hopper, cotton tetranychid, aphid, dark greyish green flying worm, diamond-back moth, the wild snout moth's larva of beans, two spotted spider mite, tea geometrid, wriggler, cockroaches, and rice leaf folder had special efficacy, and farming this is low, with the good pesticidal preparations of environment facies dissolubility.

Three, summary of the invention

The technical problem to be solved in the present invention provides a kind of to insect good disinsection effect such as the snout moth's larva of rice, plant hopper, cotton tetranychid, aphid, dark greyish green flying worm, diamond-back moth, the wild snout moth's larva of beans, two spotted spider mite, tea geometrid, wriggler, cockroaches, especially rice leaf folder there is special efficacy, and this low, good with environment facies dissolubility insecticide combination of farming.To solve the deficiency of the specific drug that lacks the little control rice leaf folder of environmental pollution in the prior art.For this reason, the present invention takes following technical scheme:

A kind of Pesticidal combination, described composition contains: weight content is the chlopyrifos of 3-55%; Weight content is the 1.5-40% iprobenfos; Weight content is the 4-15% emulsifier; Weight content is hydrocarbon or the halogenated hydrocarbon solvent of 6-20 for the 10-50% carbon number; And with water is the dispersion medium of described composition.

Described Pesticidal combination, the weight ratio of described chlopyrifos and iprobenfos are 1: 0.2～1: 5.

The preferred weight ratio of described chlopyrifos and iprobenfos is 1: 1.5～1: 2.

Described Pesticidal combination, described organic solvent can be 1. 2. 3. 4. 5. dichloro-benzenes of monochloro-benzene of trimethylbenzene of dimethylbenzene of toluene of one of following formula or any two kinds or arbitrarily two or more mixture.

Described Pesticidal combination, described emulsifier can be one of following formula or any two kinds or any two or more blended emulsifier: 1. 2. 3. 4. 5. alkyl phenol polyethylene glycol ethers phosphate of polyoxyethylene fatty acid ester of polyoxyethylene sorbitol acid anhydride of alkyl phenyl polyglycol ether of alkyl polyglycol ether.

Described Pesticidal combination, described emulsifier is preferably the mixture of 5050PB and D935.

Described Pesticidal combination also contains cosolvent N, and dinethylformamide, its weight content are 0-5%.

Described Pesticidal combination also contains the antifreezing agent that weight content is 0-10%, and described antifreezing agent can be one of the following or kind or two or more mixtures: 1. 2. 3. polyethylene glycol of propane diols of ethylene glycol.

The purposes of described insecticides is mainly used in pest control: rice leaf folder, the snout moth's larva of rice, plant hopper, cotton tetranychid, aphid, dark greyish green flying worm, diamond-back moth, the wild snout moth's larva of beans, two spotted spider mite, tea geometrid, wriggler, cockroach.

The purposes of described Pesticidal combination is mainly used in the pest control rice leaf folder.

Pesticidal combination of the present invention contains following characteristics:

1, the present invention with chlopyrifos and iprobenfos (iprobenfos) as effective ingredient, being equipped with emulsifier, cosolvent, solvent, antifreezing agent makes it be dispersed in aqueous phase and makes aqueous emulsion, can reduce farming basis nearly 50% with the single agent of chlopyrifos, has good drug efficacy, especially to rice leaf folder, and easy to use, pollute little.

2, the used shared content of an active ingredient chlopyrifos of the present invention is 3～55% by weight.

3, another used active ingredient iprobenfos of the present invention belongs to medium malicious organophosphorus fungicide, have suction, conduction in the speciality, it mainly is the interference cell membrane permeability, stop some lipophilic chitin precursor to pass through cytoplasma membrane, make chitinous biosynthesis block, rice sheath blight disease, culm rot, corn southern leaf blight, the corn northern leaf blight etc. are had preventive effect.Its structural formula is:

Iprobenfos effect in the present invention is as synergist, and to improve drug effect, the composite co-toxicity coefficient of chlopyrifos and iprobenfos can be up to 355.

Chlopyrifos: iprobenfos	2∶1	3∶2	8∶7	7∶8	2∶3	1∶2
							Co-toxicity coefficient	152	178	213	255	355	321

Because the ratio of chlopyrifos and iprobenfos is very big to the influence of co-toxicity coefficient, therefore the ratio of these two kinds of compositions is crucial in the said preparation, comprehensive drug and Nong Ben consider that the weight ratio of chlopyrifos and iprobenfos is 1: 0.2～1: 5th, comparatively suitable, be preferably 1: 1.5～1: 2.

Therefore 4, the fusing point of chlopyrifos is 42～43.5 ℃, is solid at normal temperatures, must use solvent to dissolve solid-state effective ingredient, and makes it also be difficult for crystallization at a lower temperature to separate out.Substituted benzene such as toluene, dimethylbenzene (ortho-xylene, paraxylene, meta-xylene), trimethylbenzene all can be used as solvent of the present invention, halogeno-benzene (monochloro-benzene, dichloro-benzenes) also can be used as solvent, though this class organic solvent toxicity is bigger, but consumption is less in the present invention, reduce benzene kind solvent usage amount 30-60% than cream preparation approximately, but the present invention is preferably dimethylbenzene.In order to help the pesticide original medicine dissolving and to strengthen former medicine solvability, the present invention selects N for use, dinethylformamide is as cosolvent, this solvent toxicity is very little, its rat oral LD50 is greater than 3000mg/kg, and proportion is 0.944 under the normal temperature, because proportion and water are comparatively approaching, the aqueous emulsion that is mixed with is highly stable.The weight content of solvent is 10-50%, and the weight content of cosolvent is 0-5%.

5, preparation provided by the invention is dispersion medium with water, in order to prevent preparation crystallization and freezing under low temperature environment.Adopting in ethylene glycol, propane diols, the polyethylene glycol mixture of any or any two kinds (or two or more) is 0-10% as its weight content of antifreezing agent, the preferred propane diols of the present invention.

6, the emulsifier of function admirable is necessary to aqueous emulsion, alkyl polyglycol ether, alkyl phenyl polyglycol ether, polyoxyethylene sorbitol acid anhydride, polyoxyethylene fatty acid ester and alkyl phenol polyethylene glycol ethers phosphoric acid esters wedding agents all are applicable to the present invention, and the present invention preferably adopts Takemoto oil ﹠amp; Fat co., the emulsifier of the commodity that LTD produces 5050PB by name and D935, this emulsifier can make the organic facies that contains effective ingredient in the uniform and stable dispersion of aqueous phase, and thickening power is arranged.Its weight content is 4-15%.Certainly can also adopt other surfactant if be made into other preparation (as missible oil) emulsifier.

7, preparation technology of the present invention as shown in Figure 1.Add earlier solvent (toluene or dimethylbenzene) in the premix still through measuring, the former medicine of chlopyrifos, iprobenfos, emulsifier, the cosolvent that add metering more successively, stirring and dissolving becomes the oil phase of homogeneous, put into the emulsification still that the high speed shear emulsifier is housed, open emulsifier, with the water and the antifreezing agent of the VELOCITY SHEAR of 2000～5500r/min and slowly adding metering.Oil phase is dispersed in carries out can after aqueous phase becomes stable water and milk.

Owing to adopted the lower iprobenfos of price and reduced the consumption of organic solvent, and the more high factor of the co-toxicity coefficient of chlopyrifos and iprobenfos makes the pesticide cost of said preparation very low, only be 2.3-3.0 unit/mu, far below the farming basis of 5.0 yuan/mu of 40% chlorpyrifos ecs, also prevent and treat the pesticidal preparations of rice leaf roller a little less than tradition such as desinsection list, dimehypos.

With chlopyrifos and iprobenfos is composite can also make multiple formulations such as missible oil, microemulsion, granule, pulvis.

8, show through the Application Example test, simultaneously can illustrate that the present invention has special efficacy for rice leaf folder, the composite co-toxicity coefficient of chlopyrifos and iprobenfos can be up to 355, the present invention also has effect preferably for other insects such as cotton tetranychid, aphid, dark greyish green flying worms, and can hold concurrently anti-paddy rice rice blast, rice sheath blight disease, culm rot.

In view of These characteristics, the present invention demonstrates following advantage with respect to existing Pesticidal combination:

1. the present invention is a kind of to insect good disinsection effect such as the snout moth's larva of rice, plant hopper, cotton tetranychid, aphid, dark greyish green flying worm, diamond-back moth, the wild snout moth's larva of beans, two spotted spider mite, tea geometrid, wriggler, cockroaches, especially to the specific agricultural chemical insecticide of rice leaf folder.

2. the farming of this insecticides is originally low.

3. the present invention is a dispersion medium with water, has reduced the consumption of organic solvent, and environmental pollution is little.

Four, accompanying drawing 1 is preparation technology's flow chart of the present invention.

Five, embodiment

Below in conjunction with accompanying drawing embodiments of the invention are described further:

Embodiment 1

One, the example 1 in prescription proportioning such as the table 1 is as follows in weight content:

Chlopyrifos 12%

Iprobenfos 18%

Solvent is a dimethylbenzene 16%

Emulsifier selects 5050PB 9% and D935 2%

Antifreezing agent is a propane diols 8%

Cosolvent is N, N-two % methylformamide 3%

All the other are water 32%

Two, preparation technology:

With reference to the technological process in the accompanying drawing 1, taking by weighing quantitative organic solvent by the concentration of being prepared adds in the there-necked flask of band stirring, take by weighing quantitative chlopyrifos, iprobenfos and emulsifier, cosolvent respectively, add respectively, change over to after the stirring and dissolving in the container of band high speed shear mulser, adjust rotating speed to 2000～5500r/min, add quantitative antifreezing agent and water again, making oil phase be dispersed in aqueous phase in emulsification 10-60 minute becomes stable aqueous emulsion.

Table 1: the prescription proportioning of each embodiment (representing damaged)

Embodiment 2:

One, the example 2 in prescription proportioning such as the table 1 is as follows in weight content:

Chlopyrifos 3%

Iprobenfos 1.5%

Solvent is a toluene 25%

Emulsifier selects 5050PB 10% and D935 5%

Antifreezing agent is an ethylene glycol 10%

Cosolvent is N, dinethylformamide 5%

All the other are water 39.5%

Two, Preparation Method is made aqueous emulsion with embodiment 1.

Embodiment 3

One, the example 3 in prescription proportioning such as the table 1 is as follows in weight content:

Chlopyrifos 10%

Iprobenfos 15%

Solvent is a trimethylbenzene 20%

Emulsifier selects 5050PB 9% and D935 5%

Antifreezing agent is that the degree of polymerization is 200 polyethylene glycol 7%

Cosolvent is N, dinethylformamide 4%

All the other are water 30%

Two, the preparation method makes aqueous emulsion with embodiment 1.

Embodiment 4

One, the example 4 in prescription proportioning such as the table 1 is as follows in weight content:

Chlopyrifos 18%

Iprobenfos 40%

Solvent is the mixture 10% of toluene and dimethylbenzene, and wherein toluene accounts for 30%, and dimethylbenzene accounts for 70%

Emulsifier selects 5050PB 8%

Antifreezing agent is a propane diols 5%

Cosolvent is N, dinethylformamide 2%

All the other are water 17%

Two, the preparation method makes aqueous emulsion with embodiment 1.

Embodiment 5

One, the example 5 in prescription proportioning such as the table 1 is as follows in weight content:

Chlopyrifos 20%

Iprobenfos 30%

Solvent is a monochloro-benzene 18%

Emulsifier selects 5050PB 5% and D935 3%

Antifreezing agent is a propane diols 2%

All the other are water 22%

Two, preparation method: do not add cosolvent in the prescription, other makes aqueous emulsion with embodiment 1.

Embodiment 6

One, the example 6 in prescription proportioning such as the table 1 is as follows in weight content:

Chlopyrifos 30%

Iprobenfos 20%

Solvent is a dichloro-benzenes 20%

Emulsifier selects 5050PB 6% and D935 2%

Antifreezing agent is a propane diols 1%

Cosolvent is N, dinethylformamide 1%

All the other are water 20%

Two, the preparation method makes aqueous emulsion with embodiment 1.

Embodiment 7

One, the example 7 in prescription proportioning such as the table 1 is as follows in weight content:

Chlopyrifos 40%

Iprobenfos 10%

Solvent is a dimethylbenzene 20%

Emulsifier selects 5050PB 8% and D935 3%

Antifreezing agent is a propane diols 3%

All the other are water 16%

Two, do not add in the preparation method prescription cosolvent other with embodiment 1, make aqueous emulsion.

Embodiment 8

One, the example 8 in prescription proportioning such as the table 1 is as follows in weight content:

Chlopyrifos 55%

Iprobenfos 6%

Solvent is a dimethylbenzene 20%

Emulsifier selects 5050PB 4% and D935 1%

All the other are water 14%

Two, preparation method: do not add antifreezing agent and cosolvent in the prescription, other makes aqueous emulsion with embodiment 1.

Embodiment 9:

One, the example 9 in prescription proportioning such as the table 1 is as follows in weight content:

Chlopyrifos 15%

Iprobenfos 18%

Solvent is toluene 10% and dimethylbenzene 5%

Emulsifier selects alkyl polyglycol ether 14%

Antifreezing agent is a propane diols 5%

Cosolvent is N, dinethylformamide 3%

All the other are water 30%

Two, the preparation method makes aqueous emulsion with embodiment 1.

Embodiment 10:

One, the example 10 in prescription proportioning such as the table 1 is as follows in weight content:

Chlopyrifos 8%

Iprobenfos 40%

Solvent is a toluene 20%

Emulsifier selects 5050PB alkyl phenyl polyglycol ether 6%

Antifreezing agent is an ethylene glycol 8%

Cosolvent is N, dinethylformamide 1%

All the other are water 17%

Two, the preparation method makes aqueous emulsion with embodiment 1.

Embodiment 11:

One, the example 11 in prescription proportioning such as the table 1 is as follows in weight content:

Chlopyrifos 3%

Iprobenfos 6%

Solvent is a monochloro-benzene 30%

Emulsifier selects polyoxyethylene sorbitol acid anhydride 9%

Antifreezing agent is a polyethylene glycol 10%

Cosolvent is N, dinethylformamide 2%

All the other are water 40%

Two, the preparation method makes aqueous emulsion with embodiment 1.Embodiment 12:

Two, the example 12 in prescription proportioning such as the table 1 is as follows in weight content:

Chlopyrifos 15%

Iprobenfos 15%

Solvent is trimethylbenzene 20% and dichloro-benzenes 20%

Emulsifier selects polyoxyethylene fatty acid ester 7% and alkyl phenol polyethylene glycol ethers phosphate 5%

Antifreezing agent is a propane diols 3%

Cosolvent is N, dinethylformamide 4%

All the other are water 11%

Preparation Method is made aqueous emulsion with embodiment 1.

Embodiment 13:

One, the example 13 in prescription proportioning such as the table 1 is as follows in weight content:

Chlopyrifos 9%

Iprobenfos 15%

Solvent is a toluene dimethylbenzene 50%

Emulsifier selects polyoxyethylene fatty acid ester 10%

Cosolvent is N, dinethylformamide 1%

All the other are water 15%

Two, preparation method: do not add antifreezing agent in the prescription, other step is made aqueous emulsion with embodiment 1.

Embodiment 14:

The novel formulation 30% chlopyrifos iprobenfos EW that adopts the preferred embodiment of the invention 1 to be mixed with measures the indoor activity of prodenia litura and sees Table 2, and recommending working concentration is 3000-5000 times of liquid.

Table 2:30% chlopyrifos iprobenfos EW is to the indoor measurement of prodenia litura

Concentration of treatment	Repeat	Total borer population (head)	Dead borer population (head)	Lethality (%)	Corrected mortality (%)
						1000 times	1	12	12	100	92.6
2	10	10	100	92.6
					On average		11	11	100	92.6
3000 times	1	11	11	100							92.6
					2	14	14	100	92.6
	On average	12.5	12.5	100						92.6
					5000 times	1	11	10	90.9		91.9
2	11	11	100	92.6
						On average	11	10.5	95.5	92.3
7000 times	1	12	10	83.3							91.1
					2	13	12	92.3	92.0
	On average	12.5	11	88						91.6
					9000 times	1	13	11	84.6		91.3
2	11	9	81.8	91.0
						On average	12	10	83.3	91.1
11000 times	1	12	9	75							90.1
					2	9	7	77.8	90.5
	On average	10.5	8	76.2						90.3
					13000 times	1	11	8	72.7		89.8
2	11	7	63.6	88.4
						On average	11	7.5	68.2	89.1
15000 times	1	12	8	66.7							88.9
					2	11	6	54.5	86.4
	On average	11.5	7	60.9						87.8
					17000 times	1	12	4	33.3		77.8
2	10	3	30	75.3
						On average	11	3.5	31.8	76.7
19000 times	1	10	3	30							75.3
					2	12	3	25	70.4
	On average	11	3	27.3						72.9
					The clear water contrast	1	14	1	7.1		-
2	13	0	0	-
						On average	13.5	1	7.4	-

Embodiment 15:

The novel formulation 30% chlopyrifos iprobenfos EW that adopts the preferred embodiment of the invention 1 to be mixed with is as shown in table 3 to the drug effect of rice leaf folder, and recommending consumption is 100ml/ mu, and average preventive effect has reached 93.9%.

EW is to the rice leaf roller field control effectiveness test for table 3:30% chlopyrifos iprobenfos

(mu consumption) handled in test	Repeat	Before the dispenser		Behind the medicine 4 days				Behind the medicine 7 days
												Leaf roll rate (%)	Borer population (50 clumps) alive	Leaf roll rate %	Borer population alive	The leaf roll rate (%) that decreases	The worm that the lives rate (%) that decreases	The leaf roll rate	Borer population alive	The leaf roll rate (%) that decreases	The worm that the lives rate (%) that decreases
		30% malicious different EW (80ml)	1	13.1	16	16.7	6	-27.5	62.5	12	2											8.4	87.5
2	4.1											13	5.2	4	-26.8	69.2	3.7	2	9.8	84.6
			3	12.7	12	15.3	5	-20.5	58.3	11.0	2										13.4	83.3
Add up to	29.9											41	37.2	16	-24.4	61.0	26.7	6	10.7	85.4
			30% malicious different EW (100ml)	1	12.7	16	15.0	4	-18.1	75	9.0										2	29.1	87.5
2	6.0	10										7.2	4	-20.0	60	4.9	0	18.3	100
				3	13.8	40	15.3	6	-10.9	85	11.0									2	20.3	95.0
Add up to	32.5	66										37.5	14	-15.4	78.8	24.9	4	23.4	93.9
				30% malicious different EW (120ml)	1	12.9	28	14.9	4	-15.5	85.7									10.5	0	18.6	100
2	5.1	8	6.0									2	-17.6	75	4.2	0	17.6	100
					3	11.2	16	12.0	2	-7.1	87.5								7.3	1	34.8	93.8
Add up to	29.2	52	32.9									8	-12.7	84.6	22.0	1	24.7	98.1
					40 chlorpyrifos ecs (80ml)	1	8.8	13	11.5	5	-30.7								61.5	8.0	2	9.1	84.6
2	12.3	18	16.0	7								-30.1	61.1	11.0	2	10.6	88.9
						3	4.2	9	5.3	3	-26.2							66.7	3.7	1	11.9	88.9
Add up to	25.3	40	32.8	15								-29.6	62.5	22.7	5	10.3	87.5
						20% dimehypo water solution (60ml)	1	10.1	18	12.6	6							-24.8	66.7	8.5	2	15.8	88.9
2	9.8	17	12.5	7	-27.6							58.8	7.8	2	20.4	88.2
							3	11.2	15	14.9	5						-33.0	66.7	9.2	1	17.9	93.3
Add up to	31.1	50	40.0	18	-28.6							64.0	25.5	5	18.0	90.0
							Clear water contrast (CK)	1	9.1	10	15.4						15	-69.2	-50	17.5	20	-92.3	-100
2	11.3	12	17.2	17	-52.2	-41.7						20.0	22	-77.0	-83.3
								3	10.5	12	16.0					16	-52.4	-33.3	19.7	20	-87.6	-66.7
Add up to	30.9	34	48.6	48	-57.3	-41.2						58.2	62	-88.3	-82.4

Claims (10)

1. Pesticidal combination is characterized in that described composition contains:

Weight content is the chlopyrifos of 3-55%;

Weight content is the 1.5-40% iprobenfos;

Weight content is the 4-15% emulsifier;

Weight content is that the carbon number of 10-50% is hydrocarbon or the halogenated hydrocarbon organic solvent of 6-20;

With water is the dispersion medium of described composition.

2. Pesticidal combination as claimed in claim 1, the weight ratio that it is characterized in that described chlopyrifos and iprobenfos is 1: 0.2～1: 5.

3. Pesticidal combination as claimed in claim 2, the preferred weight ratio that it is characterized in that described chlopyrifos and iprobenfos is 1: 1.5～1: 2.

4. Pesticidal combination as claimed in claim 1 is characterized in that described organic solvent can be a 1. 2. 3. 4. 5. dichloro-benzenes of monochloro-benzene of trimethylbenzene of dimethylbenzene of toluene of one of the following or any two kinds or arbitrarily two or more mixture.

5. Pesticidal combination as claimed in claim 1 is characterized in that described emulsifier can be to contain one of the following or any two kinds or any two or more blended emulsifier: 1. 2. 3. 4. 5. alkyl phenol polyethylene glycol ethers phosphate of polyoxyethylene fatty acid ester of polyoxyethylene sorbitol acid anhydride of alkyl phenyl polyglycol ether of alkyl polyglycol ether

6. Pesticidal combination as claimed in claim 1 is characterized in that described emulsifier is preferably the mixture of 5050PB and D935.

7. Pesticidal combination as claimed in claim 1 is characterized in that described composition also contains cosolvent N, dinethylformamide, and described cosolvent weight content is 0-5%.

8. Pesticidal combination as claimed in claim 1, it is characterized in that described composition also contains the antifreezing agent that weight content is 0-10%, described antifreezing agent can be one of the following or two or more mixture: 1. 2. 3. polyethylene glycol of propane diols of ethylene glycol.

9. the purposes of a Pesticidal combination according to claim 1 is characterized in that described purposes is mainly used in pest control: rice leaf folder, the snout moth's larva of rice, plant hopper, cotton tetranychid, aphid, dark greyish green flying worm, diamond-back moth, the wild snout moth's larva of beans, two spotted spider mite, tea geometrid, wriggler, cockroach.

10. the purposes of Pesticidal combination as claimed in claim 9 is characterized in that described purposes is used for the pest control rice leaf folder.

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