CN1040303A - Processing formulation---the film of pesticide for use in rice field - Google Patents
Processing formulation---the film of pesticide for use in rice field Download PDFInfo
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- CN1040303A CN1040303A CN 88105763 CN88105763A CN1040303A CN 1040303 A CN1040303 A CN 1040303A CN 88105763 CN88105763 CN 88105763 CN 88105763 A CN88105763 A CN 88105763A CN 1040303 A CN1040303 A CN 1040303A
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Abstract
Film of the present invention is made up of solvent, spreading agent and four kinds of components of surfactant of active component, lytic activity composition, this film is a kind of transparent homogeneous phase liquid, not emulsification in water, do not dissolve, and sprawl into film at the water surface rapidly, the proportion of film is less than 1, surface tension is 22-33 dynes per centimeter (25 ℃), the surface tension of the interfacial tension＜water of film/water-film surface tension, and the extended range of film on the water surface can reach 450cm.This film is strong targetedly, and cost is low, power is high, round-the-clock dispenser, and lasting medicine reduces environmental pollution, processes advantages such as easy and easy to use, the suitable various agricultural chemicals that are processed into the rice field use.
Description
The present invention relates to the processing novel form of the agricultural chemicals of a kind of rice field use.
The formulations of pesticide are various both at home and abroad at present, but can reduce three classes, one class is used formulation for spraying, as missible oil, wetting powder, colloidal suspending agent, pulvis and ultra low volume spray agent etc., two classes are used formulation for spreading fertilizer over the fields, and as bulky grain agent, granule agent etc., three classes are aerosol, utilization is fuming principle with agricultural chemicals dispersion arrival target, is mainly used in habitats such as greenhouse, warehouse.After wherein missible oil, colloidal suspending agent, wetting powder need to be emulsion with big water gaging dilution earlier, can agricultural chemicals be distributed on the protected crop with the common sprayer tool, spraying the medicine volume is the 600kg-2250kg/ hectare, this kind insecticide-applying way not only labour intensity is big, work efficiency is low, and rainy day or dispenser in good time in rainy season reduce the control effect to disease, worm, grass; The ultra low volume spray finish, though do not want thin up, can directly spray, and spray medicine volume is little, is generally the 1500-3750ml/ hectare, but needs special ultra-low-volume sprayer, and rainy day, calm day or wind-force all can not be implemented spraying at the weather more than 3 grades, are subjected to the more common spraying of weather condition restriction also big; Granule can directly spread fertilizer over the fields in the paddy field, need not special equipment, is subjected to the restriction of weather conditions less, and the rainy day also can spread fertilizer over the fields.But the granule difficulty of processing is bigger, and cost is also higher, spreads fertilizer over the fields to be difficult for evenly, and consumption is the 15kg-30kg/ hectare.
The herbicides for use in paddy technology of the disclosed clear 56-26641 of Japan's special permission communique is a kind of missible oil processing formulation, and it is dilute with water not, can expand at the water surface, and slowly sedimentation is then infiltrated in the paddy field soil, with the control weeds; The disclosed a kind of herbicides for use in paddy of CN86106679 patent application also needn't need not special equipment, but still belong to a kind of suspending agent with big water gaging dilution when applying.The missible oil of the above-mentioned type and suspending agent, can drip or spill and impose on the water surface, and can expand at the water surface, and initial extension speed is also very fast, but in expansion emulsification and sedimentation take place simultaneously, make the expansion rate gradual slow, diffusion length is little, cause agricultural chemicals to be bigger concentration gradient simultaneously and distribute, medicament distributes even inadequately.
The present invention is intended to explore a kind of new pesticide processing formulation, not only needn't dilute with water, need not special equipment, and not emulsification in water, do not dissolve, active ingredient is evenly distributed, the high effect that diffusion length is big, lowly pollute, film easy to use.
The technical scheme that realizes above-mentioned task is as follows: film is the solvent by active ingredient, lytic activity composition, four kinds of components of spreading agent and surfactant are formed, this film is a kind of transparent homogeneous phase liquid, not emulsification in water is not dissolved, and And sprawls into film at the water surface rapidly, the proportion of this film is less than 1, surface tension is 22-33 dynes per centimeter (25 ℃), the surface tension of the interfacial tension＜water of film/water-film surface tension, and the extended range on the water surface can reach 450cm.The active component that film of the present invention is selected for use should have certain solvability in solvent, the active component of desinsection, sterilization class should have interior absorption or strong permeability to water plants such as paddy rice; The organic solvent that is elected to be solvent is beneficial to outside lytic activity composition and the surfactant except having certain polarity, and surface tension should be less than 35 dynes per centimeter; Spreading agent also should have stronger polarity, helps to reduce film/water termination tension force, is beneficial to film and sprawls at the water surface.Boiling point higher (b, p＞100 ℃), surface tension is less than 32 dynes per centimeter; Surfactant is the HLB(hydrophilic lipophilic balance) be that 1～18 A, N, C type all can.
Every have all kinds of agricultural chemicals of certain solubility all can be processed into film of the present invention in organic solvent, and water plants such as desinsection wherein, bactericide reply paddy rice have interior absorption or inhale permeability.
Technical scheme of the present invention is the surface tension＞film surface tension+film/water termination tension force that makes water, and film can be sprawled into film rapidly on the water surface like this.How much active ingredient content in the film depends on efficient (effective ingredient consumption/unit are) and the solvability of active ingredient, and solvability is big, and active ingredient content can suitably improve, and the consumption of corresponding film can reduce.Spreading agent except surface tension less than 33 dynes per centimeter, its boiling point is greater than 100 ℃, when using medicament like this under hot conditions, solvent evaporates is slow, is beneficial to the even expansion of film, largest extension apart from the time, active ingredient still can effectively play a role.The film of some kind, its spreading agent can be selected same kind of organic solvent (seeing embodiment one) for use with the solvent of dissolving active ingredient.As the HLB of surfactant during at 1-4, its consumption can be chosen in 12%, but when HLB 8 when above, content range can be chosen in 1%, such content selects to make the film can be not automatic emulsified at the water surface.Active component, solvent, spreading agent and surfactant be the mixing of two or more type all.
Various types of pesticide for use in rice field are processed into film of the present invention following characteristics are arranged:
1, with strong points: the medicament water surface that evenly distributes, absorb by leaf sheath, rice fulgorid, banded sclerotial blight and underwater weeds to harm leaf sheath position, can fine performance drug effect, and it is less to the non-target biotic influence more than the water surface, can reduce like this killing and wounding of natural enemy, be beneficial to system's control action of performance natural enemy.
2, cost is low, the effect height: adopt the such processing formulation of film, various paddy pesticide consumptions are about about the 3000ml/ hectare, and are close with the dosage and the effect of ultra low volume spray, but need not the ultra low volume spray apparatus, thereby cost is low.
3, round-the-clock dispenser: spray or dust and can not carry out in the rainy day, ultra low volume spray can not carry out under rainy day, strong wind or calm condition, but the use of film can not be subjected to the restriction of weather condition.
4, lasting medicine: because agricultural chemicals is dissolved in the organic solvent, reduce contacting the decomposition that causes with water, medicament is distributed in the water surface and following, reduces photolysis, and the two all is beneficial to the prolongation of drug effect.
5, reduce environmental pollution: medicament imposes on the water surface, reduces the pollution to the plant upper space, reduces the residual quantity of agricultural chemicals in crops such as paddy.
6, processing is easy: do not need complicated process equipment, and easy and simple to handle.
7, use conveniently: do not need any spraying device, do not need dilute with water yet, drip extensively, spill, spread fertilizer over the fields on the water surface, can be on the water surface automatic expansion reach the even distribution of the full water surface.
With embodiment this film is further elaborated below.(being right after nextpage)
★ extended range assay method: in the rice field of long 1250cm, wide 300cm, put the dark water layer of 5-7cm, spread in the center, rice field polyester form fractionlet ， And at distance fragment 1cm place, high 5cm place drips 1 test solution, puts down in writing fragment largest extension distance and used time then.
The weeding test of embodiment 3 benthiocarb films
Prescription is formed: benthiocarb 150g
Toluene 150g
Oleic acid 25g
This spot 85 5g
Dispenser period: impose on 1.5 mu of seed farms transplanting 6 days morning July 11
For trying the water rice varieties: 85R
2, 9024, samsara 422
Insecticide-applying way: mix 30 jin of urea, hand spreads fertilizer over the fields
Water depth: 5-6cm
Poisoning: do not find poisoning after the dispenser in 5 days
Drug effect: the barnyard grass grass of the artificial germination in the sixth of the twelve Earthly Branches that is provided with of inspection is put 5, and the barnyard grass bud is all dead.
Claims (2)
1, a kind of processing formulation--film of pesticide for use in rice field, it is characterized in that forming by solvent, spreading agent and four kinds of components of surfactant of active ingredient, lytic activity composition, this film is a kind of transparent homogeneous phase liquid, not emulsification in water, do not dissolve, and sprawl into film at the water surface rapidly, the proportion of film is less than 1, surface tension is 22-33 dynes per centimeter (25 ℃), the surface tension of the interfacial tension＜water of film/water-film surface tension, the extended range of film on the water surface can reach 450cm.
2,, it is characterized in that the physicochemical character of each component of film is as follows according to the processing formulation-film of the described pesticide for use in rice field of claim 1:
-active ingredient should have certain solubility in solvent, the active component of desinsection, sterilization class should have interior absorption or strong permeability to water plants such as paddy rice,
-solvent is to have certain polarity, is beneficial to the dissolving of active component and surfactant, the organic solvent of surface tension＜35 dynes per centimeter,
-spreading agent has stronger polarity, helps to reduce the interfacial tension of film/water, and be beneficial to film and sprawl at the water surface, boiling point higher (b, p＞100 ℃), surface tension＜32 dynes per centimeter,
-surfactant, its HLB are that 1～18 A, N, C type all can.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN88105763A CN1034203C (en) | 1988-08-18 | 1988-08-18 | Prodn. of pesticide for use in rice field-membrane form |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN88105763A CN1034203C (en) | 1988-08-18 | 1988-08-18 | Prodn. of pesticide for use in rice field-membrane form |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1040303A true CN1040303A (en) | 1990-03-14 |
| CN1034203C CN1034203C (en) | 1997-03-12 |
Family
ID=4833910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN88105763A Expired - Fee Related CN1034203C (en) | 1988-08-18 | 1988-08-18 | Prodn. of pesticide for use in rice field-membrane form |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1034203C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103348987A (en) * | 2013-07-31 | 2013-10-16 | 河北博嘉农业有限公司 | Film-spreading oil agent capable of preventing and curing rice banded sclerotial blight |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5626641B2 (en) * | 1972-04-17 | 1981-06-19 | ||
| JPS6287501A (en) * | 1985-10-11 | 1987-04-22 | Showa Roodeia Kagaku Kk | Herbicide for paddy field |
| CN1010918B (en) * | 1987-06-30 | 1990-12-26 | 上海市金山县东风涂料厂 | Slow-releasing agent for killing larvel mosquito |
-
1988
- 1988-08-18 CN CN88105763A patent/CN1034203C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103348987A (en) * | 2013-07-31 | 2013-10-16 | 河北博嘉农业有限公司 | Film-spreading oil agent capable of preventing and curing rice banded sclerotial blight |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1034203C (en) | 1997-03-12 |
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