CN109430278A - A kind of sustained releasing pesticide granule and preparation method thereof - Google Patents
A kind of sustained releasing pesticide granule and preparation method thereof Download PDFInfo
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- CN109430278A CN109430278A CN201811481865.9A CN201811481865A CN109430278A CN 109430278 A CN109430278 A CN 109430278A CN 201811481865 A CN201811481865 A CN 201811481865A CN 109430278 A CN109430278 A CN 109430278A
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- pesticide
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/48—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with two nitrogen atoms as the only ring hetero atoms
- A01N43/56—1,2-Diazoles; Hydrogenated 1,2-diazoles
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/08—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing solids as carriers or diluents
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/26—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests in coated particulate form
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
- A01N37/44—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a nitrogen atom attached to the same carbon skeleton by a single or double bond, this nitrogen atom not being a member of a derivative or of a thio analogue of a carboxylic group, e.g. amino-carboxylic acids
- A01N37/50—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a nitrogen atom attached to the same carbon skeleton by a single or double bond, this nitrogen atom not being a member of a derivative or of a thio analogue of a carboxylic group, e.g. amino-carboxylic acids the nitrogen atom being doubly bound to the carbon skeleton
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/48—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with two nitrogen atoms as the only ring hetero atoms
- A01N43/54—1,3-Diazines; Hydrogenated 1,3-diazines
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
- A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
- A01N47/10—Carbamic acid derivatives, i.e. containing the group —O—CO—N<; Thio analogues thereof
- A01N47/24—Carbamic acid derivatives, i.e. containing the group —O—CO—N<; Thio analogues thereof containing the groups, or; Thio analogues thereof
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
- Y02P60/21—Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures
Abstract
The present invention relates to sustained-release pesticides fields, in particular to a kind of sustained releasing pesticide granule and preparation method thereof.The sustained releasing pesticide granule includes sandwich layer and wrapping layer, the sandwich layer includes carrier and pesticide activity component, and the carrier includes that mass ratio is (4~5): (2~3): alkali modification flyash, stalk and the charcoal of (1~2)；The wrapping layer includes stalk；The method of the alkali modification includes: then to carry out heating first by the flyash and fluxing agent high-temperature roasting with alkali modification agent and react；The pesticide includes methoxy acrylic bactericide；The methoxy acrylic bactericide include pyraoxystrobin, kresoxim-methyl, Fluoxastrobin, pyraclostrobin it is one or more.The present invention solve sustained releasing pesticide granule in the prior art contain a large amount of chemical industry additives, it is dangerous, slow release effect is poor the problems such as, have many advantages, such as Environmental Safety, can effectively extend the farm chemical release phase, reduce unit time burst size.
Description
Technical field
The present invention relates to sustained-release pesticides fields, in particular to a kind of sustained releasing pesticide granule and preparation method thereof.
Background technique
Pesticide is a kind of special commodity, and most of raw medicine could be applied after needing to be processed into different dosage forms.Cause
This, the research of the formulations of pesticide is always a particularly important link of pesticide developing application.But conventional pesticide dosage form utilization rate
It is low, and there are effective component rate of release it is fast, drug effect efficiency time is short, ecological pollution is serious the problems such as.It is asked to solve these
Topic, people propose higher science requirements to the formulations of pesticide.As a kind of emerging technology, sustained-release pesticides technology can be effectively
It solves the problems, such as that pesticide activity preparation rate of release is fast, effective acting time is short, the adverse effect of pesticide is reduced or avoided, to prolong
The service life of long pesticide.
Methoxy acrylic bactericide is new-type wide-spectrum bactericide, can effectively prevent sac fungus, oomycetes, engagement
Plant disease caused by nearly all subphylum fungi such as bacterium, basidiomycetes and Fungi Imperfecti.With common fungicide phase currently on the market
Than wide sterilization spectrum and the high characteristic of bactericidal activity being had both, to non-target organism and Environmental security.The mechanism of action of this kind of compound
It is the electron transmission by blocking compound III (cytochrome b/c1) in mitochondria, to inhibit the biological oxidation of pathogen.
Pyraoxystrobin (test code number SYP-3343) is a kind of new methoxy acrylic independently formulated by Shenyang Chemical Research Institute
Compound.Preliminary biological activity determination the results show that pyraoxystrobin has good in vitro bactericidal activity, to downy mildew, powdery mildew,
Rice blast, anthracnose etc. have excellent control efficiency.
The generally existing vulnerable, holding effect of current methoxy acrylic bactericide is low with a system such as environmental pollution is serious
Column problem.And agriculturally used sustained releasing pesticide granule contains a large amount of chemical industry additives, if prolonged application in farmland, meeting
Certain risk is caused to agricultural product security.
In view of this, the present invention is specifically proposed.
Summary of the invention
The first object of the present invention is to provide a kind of sustained releasing pesticide granule, and the sustained releasing pesticide granule solves
In the prior art sustained releasing pesticide granule contain a large amount of chemical industry additives, it is dangerous, slow release effect is poor the problems such as, have environmental protection peace
Entirely, it can effectively extend the farm chemical release phase, reduce the advantages that unit time burst size.
The second object of the present invention is to provide the preparation method of sustained releasing pesticide granule described in one kind, and this method has
The advantages that easy to operate, safe and non-toxic.
In order to realize above-mentioned purpose of the invention, the following technical scheme is adopted:
A kind of sustained releasing pesticide granule, the granule include sandwich layer and wrapping layer, and the sandwich layer includes carrier and pesticide
Active constituent, the carrier include that mass ratio is (4~5): (2~3): alkali modification flyash, stalk and the charcoal of (1~2)；
The wrapping layer includes stalk；
The method of the alkali modification include: first by the flyash and fluxing agent high-temperature roasting, then with alkali modification agent carry out
Heating reaction；
The pesticide includes methoxy acrylic bactericide；
The methoxy acrylic bactericide include pyraoxystrobin, kresoxim-methyl, Fluoxastrobin, pyraclostrobin one kind or
It is a variety of.
The preparation method of above-mentioned sustained releasing pesticide granule, comprising the following steps: by the carrier and be adsorbed on the load
The pesticide activity component on body bonds and is made spherical as sandwich layer, then bonds with wrapping layer, obtained by drying.
Compared with prior art, the invention has the benefit that being prepared using natural materials or agriculture and industry waste as material
The sustained releasing pesticide granule of obtained the application is environmentally friendly product.Pesticide is adsorbed in inorganic matter and organic matter composition
Carrier on, then wrapped up with adhesive, the pesticide activity component in particle can slowly be released by dissolution, diffusion and infiltration
It releases, to form the sustained releasing pesticide granule with good drugloading rate and slow release effect.Delay made from verified the application
The carrying drug ratio for releasing granular pesticide reaches 30%, is only 50% or so in the 30th day farm chemical release rate used, has significant
Sustained-release pesticides effect.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the release rate curve graph of the sustained releasing pesticide granule in the application experimental example 1；
Fig. 2 is the carrying drug ratio histogram of the sustained releasing pesticide granule in the application experimental example 2.
Specific embodiment
A kind of sustained releasing pesticide granule, the granule include sandwich layer and wrapping layer, and the sandwich layer includes carrier and pesticide
Active constituent, the carrier include that mass ratio is (4~5): (2~3): alkali modification flyash, stalk and the charcoal of (1~2)；
The wrapping layer includes stalk；
The method of the alkali modification include: first by the flyash and fluxing agent high-temperature roasting, then with alkali modification agent carry out
Heating reaction；
The pesticide includes methoxy acrylic bactericide；
The methoxy acrylic bactericide include pyraoxystrobin, kresoxim-methyl, Fluoxastrobin, pyraclostrobin one kind or
It is a variety of.
In some embodiments, the mass ratio can also be (the ranges such as 4:2:1,5:3:2,4.5:2.5:2,5:2:1.5
It is interior almost the same).
Flyash is by alkali modification twice, and once to carry out flyash and alkali, high-temperature roasting is modified, and primary is by fine coal
The solution of ash and alkali is sufficiently mixed modification at a certain temperature, increases its adsorption capacity and viscosity.When high-temperature roasting is modified,
Meltability material melts in flyash, glass network structure are destroyed, high polymer silicate network depolymerization originally, flyash
Grain becomes loose porous, and volume increases, and surface area increases.The addition of fluxing agent, flyash are further decomposed, so as to increase
Add surface area.In alkali modification, the cation in the OH- and basic modifier of flyash dissolution is destroyed in fly vitreous
Si-O key and Al-O key, depolymerization silicate glass network, and then flyash is promoted to form zeolite molecular sieve skeleton, and newly-increased many
Al, Fe active site, to enhance the physics and chemisorption performance of flyash.In addition, the flyash stickiness after alkali modification increases,
The encapsulation ratio for improving granule, can reduce the dosage of adhesive to a certain extent.
In some embodiments, the stalk includes corn stover, wheat stalk, rice straw.
In some embodiments, the stalk is straw powder.It is used after stalk is smashed it through 50~150 meshes, or
Re-sieving after being mixed with other raw materials.In some embodiments, the sieving can also be the mesh such as 70,80,100,120,140
Sieve.
In some embodiments, the diameter of the sandwich layer is 1~10mm.
In some embodiments, the diameter of the sandwich layer is preferably 2~8mm, further preferably 3~6mm.
In some embodiments, the wrapping layer with a thickness of 0.2~2mm.
In some embodiments, the thickness of the wrapping layer is preferably 0.2~1mm, further preferably 0.2~0.4mm.
In some embodiments, the mass ratio of the carrier and the wrapping layer is (4~6): 1.
In some embodiments, the mass ratio can also be (almost the same in range) such as 5:1.
In some embodiments, the mass ratio of the flyash and the fluxing agent is (2~5): 1.
In some embodiments, the mass ratio can also be (almost the same in range) such as 3:1,3.5:1,4:1.
In some embodiments, the fluxing agent includes Na2CO3。
In some embodiments, the method for the high-temperature roasting is included in 2~3h of roasting at 600~900 DEG C.
In some embodiments, the method for the temperature roasting can also be to roast 2h at 700 DEG C, roast at 800 DEG C
2.5h etc. (almost the same in range).
In some embodiments, the molar concentration of the alkali modification agent is 1~2mol/L.
In some embodiments, the molar concentration can also be (almost the same in range) such as 1.5mol/L.
In some embodiments, the alkali modification agent includes NaOH.
In some embodiments, the condition of the heating reaction is that 10~12h is reacted at 60~80 DEG C.
In some embodiments, the condition of the heating reaction can also be to react 12h at 60 DEG C, react at 70 DEG C
11h, (almost the same in range) such as 10h is reacted at 80 DEG C.
In some embodiments, the pesticide activity component of the carrier and absorption on the carrier is by adhesive
Connection.
In some embodiments, the sandwich layer is connected with the wrapping layer by adhesive.
In some embodiments, the mass ratio of the effective component of the wrapping layer and described adhesive be 1:(0.3~
0.6)。
In some embodiments, the mass ratio can also be (almost the same in range) such as 1:0.4,1:0.5.
In some embodiments, the effective component of described adhesive includes starch, sodium alginate, one in Arabic gum
Kind is a variety of.
In some embodiments, the mass concentration of effective component is 20~40% in described adhesive.
In some embodiments, the mass concentration can also be 25%, 30%, 35% etc. (almost the same in range).
In some embodiments, the pesticide is pyraoxystrobin, and described adhesive is the shallow lake that mass concentration is 28~32%
Powder.
In some embodiments, described adhesive is the starch that mass concentration is 30%.
It is another aspect of the invention to provide the preparation methods of the sustained releasing pesticide granule, comprising the following steps: will
The carrier and the absorption pesticide activity component on the carrier bond and be made it is spherical be used as sandwich layer, then with wrapping layer
Bonding, it is obtained by drying.
Embodiment of the present invention is described in detail below in conjunction with embodiment, but those skilled in the art will
Understand, the following example is merely to illustrate the present invention, and is not construed as limiting the scope of the invention.It is not specified in embodiment specific
Condition person carries out according to conventional conditions or manufacturer's recommended conditions.Reagents or instruments used without specified manufacturer is
It can be with conventional products that are commercially available.
The composition of fine coal ash composition used in the specific embodiment of the invention is as follows:
1 flyash constituent table of table
Charcoal used in the specific embodiment of the invention is provided by Henan Province charcoal engineering laboratory,
Basic physical and chemical index are as follows: pH8, full carbon 51.44%, full nitrogen 1.23%, C/N41.82%, hydrogen 2.76%, oxygen 2.76%, specific surface
Product 1.89m2g-1, cation exchange capacity (CEC) 16.2cmol (+) kg-1。
Embodiment 1
The preparation of pyraoxystrobin sustained-release granular formulation.
Pyraoxystrobin raw medicine (content 95%), Shenyang Sciencreat Chemicals Co., Ltd..
1. taking flyash 1000g, Na2CO3250g is uniformly mixed, and is placed in Muffle furnace, and first heat preservation half is small at 500 DEG C
When, then it is warming up to 800 DEG C of calcining at constant temperature 2h.It after drying, is placed in the NaOH of 1.5mol/L and mixes, react 10h at 70 DEG C
Afterwards, it filters, drying obtains alkali modification flyash, spare.
2. taking dry alkali modification flyash 400g, stalk 250g, charcoal 150g, ground 70 mesh, is obtained after mixing
To carrier.
3. 60 DEG C are dried for standby after flyash, stalk and the charcoal that pyraoxystrobin raw medicine and upper step obtain are sufficiently mixed.
4. 200g starch is taken to be added in 400g water, 1h is gelatinized at 80 DEG C.
5. the starch solution of gelatinization is sprayed on the mixture that step 3 obtains on pelletizer, the ball of 1~10mm is made
Shape sandwich layer, 60 DEG C are dried for standby.
6. continuing to spray the starch solution being gelatinized to the sandwich layer of drying on pelletizer, stalk 200g is added, packet is made
Covering layer, wrapping layer with a thickness of 0.2~2mm, 60 DEG C of drying to get.
Embodiment 2
The preparation of pyraclostrobin sustained-release granular formulation.
Pyraclostrobin (content 98%), Jiangsu You Jia plant protection Co., Ltd.
1. taking dry alkali modification flyash 500g, stalk 200g, charcoal 200g, ground 70 mesh, is obtained after mixing
To carrier.
2. after flyash, stalk and the charcoal that pyraclostrobin raw medicine and upper step obtain are sufficiently mixed, 60 DEG C of drying
It is spare.
3. 80g starch is taken to be added in 160g water, 1h is gelatinized at 80 DEG C.
4. the starch solution of gelatinization is sprayed on the mixture that step 2 obtains on pelletizer, the ball of 1~10mm is made
Shape sandwich layer, 60 DEG C are dried for standby.
5. continuing to spray the starch solution being gelatinized to the sandwich layer of drying on pelletizer, stalk 160g is added, packet is made
Covering layer, wrapping layer with a thickness of 0.2~2mm, 60 DEG C of drying to get.
The slow release effect of 1 sustained releasing pesticide granule of experimental example is studied.
The setting of comparative example: it is configured based on embodiment 1, the specific method is as follows:
Comparative example 1: the alkali modification flyash in 1 carrier of embodiment is removed, and equal proportion adds stalk and charcoal to protect
It is constant to demonstrate,prove carrier total amount；
Comparative example 2: the alkali modification flyash in 1 carrier of embodiment is changed to the flyash not being modified.
About 10g embodiment 1 is weighed respectively, the pyraoxystrobin sustained-release granular formulation that comparative example 1 and 2 is prepared is put into equipped with soil
Flowerpot red, with soil by granule it is embedded after, constantly soil is eluted with flowing water, water velocity is controlled in 20mL/
Min collects a leacheate at regular intervals, measures the content of pyraoxystrobin in leacheate.With the dilution of 0.1mL pyraoxystrobin solution
After be sprayed directly in soil, after embedding carry out washing tests as a control group, water velocity is equally controlled in 20mL/min, often
A leacheate is collected every a period of time, the content for measuring pyraoxystrobin in leacheate is averaged in triplicate.It calculates not
With the release percentage of time pyraoxystrobin, the result is shown in Figure 1.
It will be seen from figure 1 that release rate of the control group at 2 days has had reached 60% or more, reached at the 6th day
90%；Comparative example 1 only does carrier with stalk and charcoal and already has slow release effect, but effect is general；Comparative example 2 shows general
Ingredient of the logical flyash as composition carrier, it is more preferable than without using slow release effect；The release rate of embodiment 1 on day 2 is 10%
Left and right, gradually increases, at the 30th day, release rate was about 67%, showed good slow release effect later.
The load effect of 2 sustained releasing pesticide granule of experimental example is studied.
About 0.1g (being accurate to 0.001g) embodiment 1 is weighed respectively, the pyraoxystrobin sustained release that comparative example 1 and 2 is prepared
Granula is dissolved in 100g water, is centrifuged 5min at 10000r/min, and supernatant is taken to cross 0.45 μm of filter membrane.Use high performance liquid chromatography
The content (be repeated 3 times and be averaged) for detecting the pyraoxystrobin in filtrate, is calculated as follows drugloading rate:
The quality of effective component/total particle quality × 100% in drugloading rate (%)=particle.
(Fig. 2) as the result is shown, the sustained-release granular formulation that the embodiment of the present application 1 is prepared have than comparative example 1 and comparative example 2
Drug effect fruit is preferably carried, is illustrated with the flyash without using flyash and compared with using ordinary fly ash, after the application alkali modification
It is more suitable for the carrier of pyraoxystrobin sustained-release granular formulation.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, but those skilled in the art should understand that: its
It is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features
It is equivalently replaced；And these are modified or replaceed, various embodiments of the present invention skill that it does not separate the essence of the corresponding technical solution
The range of art scheme.
Claims (10)
1. a kind of sustained releasing pesticide granule, which is characterized in that the granule includes sandwich layer and wrapping layer, and the sandwich layer includes carrying
Body and pesticide activity component, the carrier include that mass ratio is (4~5): (2~3): alkali modification flyash, the stalk of (1~2)
And charcoal；The wrapping layer includes stalk；
The method of the alkali modification includes: then to be heated with alkali modification agent first by the flyash and fluxing agent high-temperature roasting
Reaction；
The pesticide includes methoxy acrylic bactericide；
The methoxy acrylic bactericide includes one kind or more of pyraoxystrobin, kresoxim-methyl, Fluoxastrobin, pyraclostrobin
Kind.
2. sustained releasing pesticide granule according to claim 1, which is characterized in that the diameter of the sandwich layer is 1~10mm；
Preferably, the wrapping layer with a thickness of 0.2~2mm.
3. sustained releasing pesticide granule according to claim 1, which is characterized in that the quality of the carrier and the wrapping layer
Than for (4~6): 1.
4. sustained releasing pesticide granule according to claim 1, which is characterized in that the matter of the flyash and the fluxing agent
Amount is than being (2~5): 1；
Preferably, the fluxing agent includes Na2CO3。
5. sustained releasing pesticide granule according to claim 4, which is characterized in that the method for the high-temperature roasting is included in
2~3h is roasted at 600~900 DEG C.
6. sustained releasing pesticide granule according to claim 4, which is characterized in that the molar concentration of the alkali modification agent is 1
~2mol/L；
Preferably, the alkali modification agent includes NaOH；
Preferably, the condition of the heating reaction is that 10~12h is reacted at 60~80 DEG C.
7. sustained releasing pesticide granule according to claim 1, which is characterized in that the carrier and absorption are on the carrier
The pesticide activity component connected by adhesive；
Preferably, the sandwich layer is connected with the wrapping layer by adhesive.
8. sustained releasing pesticide granule according to claim 7, which is characterized in that the wrapping layer and described adhesive have
The mass ratio for imitating ingredient is 1:(0.3~0.6)；
Preferably, the effective component of described adhesive includes one of starch, sodium alginate, Arabic gum or a variety of；
Preferably, the mass concentration of effective component is 20~40% in described adhesive.
9. described in any item sustained releasing pesticide granules according to claim 1~8, which is characterized in that the pesticide is pyraoxystrobin,
Described adhesive is the starch that mass concentration is 28~32%.
10. the preparation method of sustained releasing pesticide granule according to any one of claims 1 to 9, which is characterized in that including following step
It is rapid: the carrier and the absorption pesticide activity component on the carrier bonds and be made it is spherical be used as sandwich layer, then with
Wrapping layer bonding, it is obtained by drying.
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| CN201811481865.9A CN109430278A (en) | 2018-12-05 | 2018-12-05 | A kind of sustained releasing pesticide granule and preparation method thereof |
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| CN201811481865.9A CN109430278A (en) | 2018-12-05 | 2018-12-05 | A kind of sustained releasing pesticide granule and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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