CN104521951A - Pesticide granules with slow release effect - Google Patents
Pesticide granules with slow release effect Download PDFInfo
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- CN104521951A CN104521951A CN201410816824.6A CN201410816824A CN104521951A CN 104521951 A CN104521951 A CN 104521951A CN 201410816824 A CN201410816824 A CN 201410816824A CN 104521951 A CN104521951 A CN 104521951A
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Abstract
The invention discloses pesticide granules with a slow release effect and a preparation method of the pesticide granules. The granules comprise the following raw materials in percentage by weight: 0.01-20 percent of pesticide active ingredients, 1-5 percent of aids, 1-10 percent of a porous material, 0.5-20 percent of an adhesive and 45-97 percent of a core carrier. The method for preparing the granules comprises the following steps: (1) mixing the pesticide active ingredients and the aids, grinding into solid powder with the granule granularity of 5-25 microns; (2) mixing the obtained solid powder, the porous material and the adhesive to obtain a mixed materials; and (3) rolling and attaching the obtained mixed materials to the core carrier, finally drying, cooling and screening. The method for preparing the slow-release granules, disclosed by the invention, is low in equipment investment, high in operability and low in energy consumption; and moreover, the prepared slow-release granules have the characteristics of fast effect and persistent effect, the administration frequency is reduced, the control cost is reduced, the environmental pollution is alleviated, and the simple, convenient, labor-saving, high-efficiency, scientific and environment-friendly agricultural production requirements can be met.
Description
Technical field
The invention belongs to technical field of pesticide, be specifically related to a kind of granular pesticide with slowly-releasing effect.
Background technology
In recent years, rural area labouring population constantly reduce, and dispenser cost of labor continues to improve, and constantly draw high agriculture production cost, therefore, develop a kind of saving of labor of having, active demand that the Pesticidal products of long-acting function has become market.This Pesticidal products, by a dispenser, can reach the damage by disease and insect extent of injury reduced in Crop growing stage, reduces the real object of later stage spraying times.Given this, the agricultural chemicals producer of tool research and development advantage has carried out the exploitation of some slow controlled release Pesticidal products, but up to the present, the sustained-release pesticides product also rarely having tool market to cause a sensation power comes out, tracing it to its cause, also there is many technical barriers being difficult to overcome in the Pesticidal products that research and development have slow controlled release effect.
Present stage, the form that the R&D direction of slow controlled-release technology forms microcapsules mainly with the coated pesticide activity component of resin material is main.Such as, patent CN101176726A discloses a kind of medicine-loading sustained-release micro-capsule and preparation method thereof, and by emulsion by in-situ, the coated method with synthesizing prepares the medicine/silica with core-shell structure
novelmicrocapsule systems, can be embedded in hollow interior by the medicine of different molecular size, makes it really become the warehouse of medicine storage, improves drug loading, and can utilize shell structurre regulating drug rate of release, reach the object of slowly-releasing.Obviously, microencapsulation can realize effect of the slowly-releasing of pesticide activity component, but the outstanding shortcoming of this kind of microencapsulation of pesticide sustained release agent is that cyst wall is expensive, preparation costly, and complex process, need first to do microcapsules, embed, technique is comparatively complicated again, and controlled condition is harsh, cyst wall thin and thick is difficult to control, formed microcapsules rate of release be difficult to control, so make product quality fashion time bad, be difficult to the accreditation obtaining peasant household in the short time.
In addition, particle coating methods also belongs to slow release method, fully adheres in granular core by medicament, then as coated in polyvinyl resin, epoxy resin etc. and curing agent carry out release membranes in a heated condition in granulating disc with macromolecule resin material.The preparation of slow release fertilizer is adopted in this way mostly, and such as, the patent No. is the slow release fertilizer preparation technology that patent discloses a kind of " composite envelope type slow release fertilizer " by name of 200510094262.X.This technique has certain enlightenment to agricultural chemicals enterprise processing sustained releasing pesticide granule, but practical operation difficulty is larger, to realize the suitability for industrialized production of sustained-release pesticides product, the environmental protection equipment needing input price high and oven dry special equipment, also need to consume huge heat energy, therefore production cost is higher, does not possess environment-friendly advantage.
Summary of the invention
Can in special time for agricultural chemicals being made one, continual and steady is discharged into required place by pesticide activity component, guarantee the damage by disease and insect effectively prevented and treated in Crop growing stage, thus reached minimizing spraying times, reduce cost accounting, alleviate the object of environmental pollution, the invention provides a kind of method preparing the granular pesticide of tool slowly-releasing effect, and the sustained-release granular formulation of multiple pesticide species that adopted described method to prepare.
Instant invention overcomes the defect in existing sustained-release granular formulation technology of preparing, there is the clear superiority that operation possibility is high, equipment investment is little, energy consumption is little, well meet simple and convenient, saving of labor is efficient, the agricultural production demand of scientific and technological environmental protection.
By the research that inventor is deep for a long time, found that choose suitable porous material, binding agent, core carrier, auxiliary agent match with pesticide activity component, can prepare the granular pesticide with slowly-releasing effect.As preferably of the present invention, according to weight percent meter, above-mentioned material consists of pesticide activity component 0.01% ~ 20%, auxiliary agent 1% ~ 5%, porous material 1% ~ 10%, binding agent 0.5% ~ 20%, core carrier 45% ~ 97%.
In the sense of the present invention, the restriction that described pesticide activity component is not special, can be selected from one or more the mixture in insecticide, bactericide, weed killer herbicide.According to the physicochemical property of different agricultural chemicals composition and the purposes of granule prepared, following pesticide activity component is not confined to the selection of concrete pesticide species.
Specifically, described insecticide, such as can select the nicotine compound such as Imidacloprid, Diacloden, clothianidin, MTI-446, thiacloprid, Nitenpyram, imidaclothiz, cycloxaprid; The nereistoxin compounds such as dimehypo, Cupric sulfate, cartap, thiocyclam; The carbamate compounds such as carbofuran, carbosulfan, Benfuracard micro, thiodicarb; The organophosphorus compounds such as chlopyrifos, diazinon, fosthiazate, Hostathion, isocarbophos; And the pesticide activity component of part other types, one or more the complex composition in such as Rynaxypyr, fipronil bisamide, four chlorantraniliproles, pymetrozine, ethiprole, Avermectin, emamectin benzoate, d ichlorbenzuron, monomethyl ether, Amitraz, Biphenthrin, cyfluthrin, ether chrysanthemum ester isoreactivity composition.
Described bactericide, such as can select one or more complex compositions in own azoles alcohol, Tebuconazole, Difenoconazole, Flutriafol, olefin conversion, tmtd, thiophanate-methyl, tpn, Prochloraz, prochloraz-manganese chloride complex, hymexazo, metalaxyl, propamocarb, fenaminosulf, Fluoxastrobin, pyraclostrobin, kresoxim-methyl, thifluzamide, flutolanil, fluorine pyrrole bacterium acid amides, amino-oligosaccharide, kasugarnycin, steroid enol etc.
Described weed killer herbicide, can select one or more the complex composition in Acetochlor, the third careless amine, isopropyl methoxalamine, pyrazosulfuron, mefenacet etc.
Auxiliary agent in the present invention comprises one or more the mixture in white carbon, anionic surfactant, nonionic surface active agent.Wherein, white carbon is the conventional auxiliary agent in Pesticide formulation field or filler, has excellent adsorptivity and mobility.Anionic surfactant comprises alkyl sulfate, alkylsulfonate, one or more the mixture in the surfactants such as polycarboxylate.One or more the mixture such as nonionic surface active agent block polyether, alkyl phosphate, sorbitol polyoxyethylene ether.
Especially, micropore dextrin selected by the porous material in granule of the present invention.
Binding agent in the present invention comprises one or both the mixture in sodium carboxymethyl starch, CMC, polyacrylamide.
To described core carrier, there is no particular limitation in the present invention, at the soil particle that granular pesticide manufacture field is conventional, is such as selected from the one in clay particle, kaolin particle, bentonite clay particle etc., all can prepares sustained-release granular formulation as core carrier.In addition, described core carrier also can select trace element fertilizer particle or compound fertilizer granules, and using fertiliser granulates as core carrier, the granule of the present invention prepared is in fact the coexisting body of pesticide activity component and fertilizer.While using granule of the present invention control disease pest and weed, fertilizer needed for growth can also be provided for crop, more can meet the agricultural production demand of efficient, the scientific and technological environmental protection of saving of labor to a certain extent.
The preparation method of granule of the present invention, comprises the steps:
(1) first pesticide activity component is mixed with auxiliary agent, then pulverize, obtain the pressed powder that mobility and the grain fineness that has good stability are 5 ~ 25 microns;
(2) pressed powder prepared by step (1) and porous material, adhesive drop in double helix stirred tank, are uniformly mixed, in porous material and binding agent are uniformly distributed in pressed powder prepared by step (1);
(3) material step (2) handled well and core carrier are together knocked down in granulating disc; under the condition of spraying water and heat; the material that step (2) is handled well rolls and invests on core carrier, then drying, cooling, namely obtains the granular pesticide finished product with slowly-releasing effect after screening.
It should be noted that, above-mentioned preparation method is all applicable to being solid-state and liquid pesticide activity component, the pesticide activity component of liquid towards, with after the pesticide activity component of appropriate white carbon absorption liquid state in step (1), then carries out follow-up crushing operation.
In the present invention, although micropore dextrin or adhesive can to a certain extent after meeting water, parcel pesticide activity component, the material that can play main slowly-releasing effect is the cross linking membrane formed after water met by micropore dextrin and adhesive.Both micropore dextrin and adhesive complement one another, and wherein slowly-releasing effect of micropore dextrin is obviously better than slowly-releasing effect of selected adhesive.The cross linking membrane formed can retain the release of part pesticide activity component, but cross linking membrane is relatively easily degraded in soil, therefore efficiency time can only reach 40 ~ 60 days, and the absorption of micropore dextrin to active ingredient is more firm, and not easily degrade in soil, can the effective guarantee pesticide activity component slow releasing of 90 ~ 120 days, make granule of the present invention have good efficiency time.
Beneficial effect major embodiment of the present invention is in the following areas:
(1) present invention achieves the slow releasing of pesticide activity component, avoid the chemical injury of crops risk concentrating release to produce.
(2) slow releasing of pesticide activity component, what meet the disease pest and weed of crop different growth stage prevents and treats demand, effectively controls the harm of the disease pest and weed in Crop growing stage, decreases crop growth middle and later periods spraying times, reduce dispenser cost.
(3) material playing pesticide slow-release effect in the present invention is the cross linking membrane formed after water met by the adhesive such as micropore dextrin and sodium carboxymethyl starch, CMC, polyacrylamide.These material costs are lower, wide material sources, therefore have the feature of low, the easy degraded of cost, high-environmental as the basic material of sustained-release pesticides product development.
(4) the granular pesticide preparation method of tool slowly-releasing effect provided by the invention, technique is simple, easy to operate.In the plant produced stage, just the micropore dextrin and pesticide activity component that can play crucial slow releasing function are carried out simple mixing, simultaneously done further fixing by the cross linking membrane that binding agent is formed in the granulating stage, do not realize the embedding of pesticide activity component, but when granule of the present invention is applied to field, cross linking membrane water-swellable, pesticide activity component progressively exosmoses with water, a part of pesticide activity component is wherein adsorbed by micropore dextrin and stores, part pesticide activity component is crosslinked film and intercepts, thus play slow releasing function, some pesticide activity component oozes out granule, play quick-acting effect.Therefore, sustained-release granular formulation prepared by this technique, crucial pesticide activity component embedding process completes to a great extent after imposing on field, has saved production cost, has decreased a large amount of energy consumption, improve working (machining) efficiency.
Accompanying drawing explanation
fig. 1it is the release profiles of 2.5% Diacloden sustained-release granular formulation.
fig. 2it is the release profiles of 2.5% Diacloden granule.
Embodiment
For the ease of understanding object of the present invention, technical scheme and effect thereof, now will be elaborated further the present invention in conjunction with the embodiments.
Embodiment 1, prepares 2.5% Diacloden sustained-release granular formulation
(1) by active constituent content be 98% the former medicine 25.5kg of Diacloden, lauryl sodium sulfate 5kg mix after, by air-flow crushing to be particle size range the be powder material of 5 ~ 25 microns;
(2) material handled well in step (1) is mixed in double helix stirred tank with micropore dextrin 20kg, sodium carboxymethyl starch 10kg, acrylate 2.5kg;
(3) mixed material step (2) obtained and kaolin spheric granules 937kg together knock down in granulating disc, open granulating disc, keep the rotating speed of 5 ~ 6 turns/min, under the heating condition of 60 ~ 90 DEG C, spray into wellatomized globule, make the mixed material in step (2) under the effect of binding agent, constantly adhere to the top layer of kaolin spheric granules, after material sticks to be mixed, stop water spray, continue heating more than 30min, then shaping particle is passed through drying plant, screening plant is entered after discharging, namely the Diacloden sustained-release granular formulation that active constituent content is 2.5% is obtained after having sieved.
Embodiment 2, prepares 5% Imidacloprid Difenoconazole sustained-release granular formulation (2.5:2.5)
(1) by active constituent content be 95% the former medicine 26.3kg of Imidacloprid, active constituent content is 95% difenoconazole technical material 26.3kg, after Surfactant SDS 10kg mixes, by air-flow crushing to be particle size range the be powder material of 5 ~ 25 microns;
(2) material handled well in step (1) is mixed in double helix stirred tank with micropore DEXTRIN kg, binding agent sodium carboxymethyl starch 8kg, polyacrylamide 6kg;
(3) mixed material in step (2) and clay spheric granules 893.4kg are together knocked down in granulating disc, open granulating disc, keep the speed of 5 ~ 6 turns/min, under the heating condition of 60 ~ 90 DEG C, spray into wellatomized globule, make the mixed material in step (2) under the effect of binding agent, constantly adhere to the top layer of clay spheric granules, after thing to be mixed adheres to, stop water spray, continue heating more than 30min, then shaping particle is passed through drying plant, screening plant is entered after discharging, namely obtaining active constituent content after having sieved is 5% Imidacloprid Difenoconazole sustained-release granular formulation.
Embodiment 3, prepares 2% Biphenthrin clothianidin sustained-release granular formulation (1:1)
(1) by active constituent content be 95% the former medicine 10.5kg of clothianidin, active constituent content is the former medicine 10.5kg of 95% Biphenthrin, after the efficient wetting agent YFK10kg of surfactant mixes, by air-flow crushing to be particle size range the be powder material of 5 ~ 25 microns;
(2) material handled well in step (1) is mixed in double helix stirred tank with micropore dextrin 25kg, binding agent hydroxyethylcellulose 6kg, acrylate 5kg;
(3) mixed material in step (2) and bentonite spheric granules 933kg are together knocked down in granulating disc, open granulating disc, keep the speed of 5 ~ 6 turns/min, under the heating condition of 60 ~ 90 DEG C, spray into wellatomized globule, make the mixed material in step (2) under the effect of binding agent, constantly adhere to the top layer of bentonite spheric granules, after thing to be mixed adheres to, stop water spray, continue heating more than 30min, then shaping particle is passed through drying plant, screening plant is entered after discharging, namely obtaining active constituent content after having sieved is 2% biphenyl clothianidin sustained-release granular formulation.
Embodiment 4, prepares 10% Imidacloprid Cupric sulfate sustained-release granular formulation (2:8)
The raw material that the present embodiment uses has: active constituent content is 95% Imidacloprid former medicine 21kg, active constituent content is the former medicine 84.2kg of 95% Cupric sulfate, surfactant wp4108kg, micropore dextrin 35kg, binding agent sodium carboxymethyl starch 12kg, acrylate 4kg, clay spheric granules 835.8kg.
Concrete preparation method is with reference to embodiment 1 ~ 3.
Embodiment 5, prepares 4% clothianidin ethiprole sustained-release granular formulation (3:1)
The raw material that the present embodiment uses has: active constituent content is 95% clothianidin former medicine 31.6kg, active constituent content is the former medicine 10.6kg of 95% ethiprole, surfactant wp41010kg, micropore dextrin 28kg, binding agent sodium carboxymethyl starch 10kg, kaolin spheric granules 909.8kg.
Concrete preparation method is with reference to embodiment 1 ~ 3.
Embodiment 6, prepares 5% pyraclostrobin thifluzamide sustained-release granular formulation (2:3)
The raw material that the present embodiment uses has: active constituent content is 98% pyraclostrobin former medicine 20.4kg, active constituent content is the former medicine 31.6kg of 95% thifluzamide, Surfactant SDS 12kg, micropore dextrin 25kg, bonding hydroxyethylcellulose 6kg, acrylic acid 3kg, bentonite spheric granules 902kg.
Concrete preparation method is with reference to embodiment 1 ~ 3.
Embodiment 7, prepares 5.5% A Wei fosthiazate sustained-release granular formulation (0.5:5)
(1) be first after the former medicine 50.6kg of 90% fosthiazate fully adsorbs with white carbon 15kg by active constituent content, be after the former medicine 5.3kg of 95% Avermectin, surfactant wp4105kg mix again with active constituent content, by air-flow crushing to be particle size range the be powder material of 5 ~ 25 microns;
(2) material handled well in step (1) is mixed in double helix stirred tank with micropore dextrin 20kg, binding agent sodium carboxymethyl starch 5kg, polyacrylamide 3kg;
(3) mixed material in step (2) and clay spheric granules 896.1kg are together knocked down in granulating disc, open granulating disc, keep the speed of 5 ~ 6 turns/min, under the heating condition of 60 ~ 90 DEG C, spray into wellatomized globule, make the mixed material in step (2) under the effect of binding agent, constantly adhere to the top layer of clay spheric granules, after thing to be mixed adheres to, stop water spray, continue heating more than 30min, then shaping particle is passed through drying plant, screening plant is entered after discharging, namely obtaining active constituent content after having sieved is 5.5% A Wei fosthiazate sustained-release granular formulation.
Embodiment 8, prepares 0.4% Imidacloprid Cupric sulfate slow releasing medicinal fertilizer granular formulation (0.1:0.3)
(1) by active constituent content be 95% Imidacloprid former medicine 1.05kg, active constituent content be after the former medicine 3.16kg of 95% Cupric sulfate, Surfactant SDS 0.3kg mix, by air-flow crushing to be particle size range the be powder material of 5 ~ 25 microns;
(2) material handled well in step (1) is mixed in double helix stirred tank with micropore dextrin 5kg, binding agent hydroxyethylcellulose 1kg, acrylate 0.5kg;
(3) by the mixed material in step (2) and compound fertilizer granules (N:P
2o
5: K
2o=15:15:15) 989kg together knocks down in granulating disc, open granulating disc, keep the speed of 5 ~ 6 turns/min, under the heating condition of 60 ~ 90 DEG C, spray into wellatomized globule, make the mixed material in step (2) under the effect of binding agent, constantly adhere to the top layer of clay spheric granules, after thing to be mixed adheres to, stop water spray, continue heating more than 30min, then shaping particle is passed through drying plant, screening plant is entered after discharging, namely obtaining pesticide effective component content after having sieved is 0.4% Imidacloprid Cupric sulfate slow releasing medicinal fertilizer granular formulation.
Embodiment 9, prepares 0.17% Diacloden ethiprole Difenoconazole slow releasing medicinal fertilizer granular formulation (0.1:0.03:0.04)
(1) by active constituent content be 98% Diacloden former medicine 1.02kg, active constituent content be the former medicine 0.32kg of 95% ethiprole, after 95% difenoconazole technical material 0.42kg, Surfactant SDS 0.4kg mix, by air-flow crushing to be particle size range the be powder material of 5 ~ 25 microns;
(2) material handled well in (1) is mixed in twin-spiral mixer with micropore dextrin 3kg, binding agent hydroxyethylcellulose 0.8kg, acrylate 1kg;
(3) mixture in (2) and compound fertilizer granules (N:P2O5:K2O=15:15:15) 993kg are together knocked down in granulating disc, open granulating disc, 5-6 is kept to turn/the speed of min, under the heating condition of 60-90 degree Celsius, spray into wellatomized globule, make the mixture in (2) under the effect of binding agent, constantly adhere to kaolin spheric granules top layer, after thing to be mixed adheres to, stop water spray, continue heating more than 30min, then shaping particle is passed through drying plant, screening plant is entered after discharging, namely 0.4% Imidacloprid Cupric sulfate slow releasing medicinal fertilizer granular formulation is obtained after having sieved.
Embodiment 10, the sustained release performance of 2.5% Diacloden sustained-release granular formulation and field control effectiveness test
The preparation of 2.5% Diacloden sustained-release granular formulation is with reference to embodiment 1.
Contrast medicament is 2.5% common Diacloden granule, and the preparation method of this granule is as follows:
(1) by active constituent content be 98% the former medicine 25.5kg of Diacloden, lauryl sodium sulfate 5kg mix after, by air-flow crushing to be particle size range the be powder material of 5 ~ 25 microns;
(2) mixed material in step (1) and kaolin spheric granules 969.5kg are together knocked down in granulating disc, open granulating disc, keep the speed of 5 ~ 6 turns/min, under the heating condition of 60 ~ 90 DEG C, spray into wellatomized globule, make the mixed material in step (1) under the effect of binding agent, constantly adhere to the top layer of kaolin spheric granules, after thing to be mixed adheres to, stop water spray, continue heating more than 30min, then shaping particle is passed through drying plant, screening plant is entered after discharging, namely the Diacloden granule that active constituent content is 2.5% is obtained after having sieved.
The rate of release comparative trial of 2.5% Diacloden sustained-release granular formulation and 2.5% Diacloden granule.
(1) rate of release comparative trial method
Accurately take 2.5% Diacloden sustained-release granular formulation in 1g (exact value 0.0001g) embodiment 1, be placed in spherical bag filter, after adding 25ml deionized water, bag filter is completely closed, be placed in the conical flask that 200ml deionized water is housed afterwards, in wherein adding stirrer, at the uniform velocity stir in transit mixer, 0.5ml solution is taken out in timing, and supplement by the deionized water of identical amount, keep total liquid volume constant, adopt the Diacloden content in high effective liquid chromatography for measuring dissolution medium.
The cumulative release speed of Diacloden in calculation sample according to the following formula.
In above formula, Q (%) represents cumulative release percentage (%); V
0represent the cumulative volume (ml) of dissolution medium; C
trepresent the Diacloden concentration (mg/ml) in the dissolution medium that release time, point measured; V represents the volume (ml) of every sub-sampling; Diacloden quality (mg) total in W expression system.
Get the common 2.5% Diacloden granule of 1g (being accurate to 0.0001g) embodiment 10 preparation for contrast simultaneously.The accumulative rate of release of Diacloden is measured according to identical method.
(2) rate of release comparative test result
The release profiles of 2.5% Diacloden sustained-release granular formulation and 2.5% Diacloden granule
as Fig. 1, shown in 2.
From
fig. 1can find out, 2.5% Diacloden sustained-release granular formulation starts to accelerate release after 8 hours, this shows that it invades bubble water absorption and swelling quickening after 8 hours in water, cause active component (Diacloden) to discharge to accelerate, and after 96 hours, due to the cause that active component is adsorbed by micropore dextrin, rate of release is obviously slack-off, until 192h, thiacloprid releasing ratio just reaches about 70%.From
fig. 2can find out, 2.5% Diacloden granule invade soaked in after just start sharply to discharge, until 8 is constantly little, released all effectively become 93.5%.Therefore, from release data, the 2.5% Diacloden sustained-release granular formulation made according to this processes has obvious slowly-releasing effect.
The field control effectiveness test of (3) 2.5% Diacloden sustained-release granular formulation control wheat aphids.
When wheat cultivation, 2.5% Diacloden sustained-release granular formulation of preparation in embodiment 1 is sowed together with after wheat seed Homogeneous phase mixing, every mu of dosage is respectively 1500g, 2000g and 2500g tri-process, contrast medicament is 2.5% Diacloden granule of preparation in embodiment 10, and dosage is every mu of 2500g.Institute an inquiry at the wheat jointing initial stage, investigation in every 10 days once, is investigated 5 times altogether.Field control effectiveness test the results are shown in
table 1.
table 12.5% Diacloden sustained-release granular formulation control wheat aphid field control effectiveness test result
From
table 1can find out, in embodiment 1,2.5% Diacloden sustained releasing pesticide granule of preparation is when wheat cultivation, use the aphid damage that once can effectively control in wheat growth stage, and compared with the 2.5% Diacloden granule prepared with contrast medicament embodiment 10, its control efficiency and lasting period are significantly improved.
Embodiment 11, the field control effectiveness test of 5.5% A Wei fosthiazate sustained-release granular formulation control tomato root-knot eelworm
Before tomato is transplanted, spill in field by unrestrained for 5.5% A Wei fosthiazate sustained-release granular formulation of preparation in embodiment 7, plough afterwards and revolve plough process, ridging is transplanted.Every mu of dosage of 5.5% A Wei fosthiazate sustained-release granular formulation is 2500g, 3000g.Contrast medicament is commercially available 5.5% A Wei fosthiazate granule, and consumption is every mu of 3000g.Within after medicine 45 days, institute an inquiry first time, do not have 10 days afterwards and investigate once, investigate 4 times altogether.Field control effectiveness test the results are shown in
table 2.
table 2the test of pesticide effectiveness result of 5.5% A Wei fosthiazate sustained-release granular formulation control tomato root-knot eelworm
Result of the test (
table 2) show, 5.5% A Wei fosthiazate sustained-release granular formulation has good control efficiency to tomato root-knot eelworm, first time investigation, the quick-acting of commercially available 5.5% A Wei fosthiazate granule is embodied, the 5.5% A Wei fosthiazate granule prepared compared with embodiment 7 shows certain quick-acting, but when second time is afterwards to the 4th investigation, 5.5% A Wei fosthiazate sustained-release granular formulation prepared by embodiment 7 shows superior lasting effect and high efficiency, think and control the long-term hazards of root-knot nematode, 5.5% A Wei fosthiazate granule product of exploitation spacetabs type has desirable realistic meaning.
Further describe invention has been above, but the present invention is not limited to above-mentioned embodiment, in the ken that one skilled in the relevant art possesses, can also make a variety of changes under the prerequisite not departing from present inventive concept in conjunction with the embodiments.
Claims (9)
1. have the granular pesticide of slowly-releasing effect, it is characterized in that, described granule adopts the method comprised the steps to be prepared from:
(1) first pesticide activity component is mixed with auxiliary agent, then pulverize, obtain the pressed powder that mobility and the grain fineness that has good stability are 5 ~ 25 microns;
(2) pressed powder prepared by step (1) and porous material, adhesive drop in double helix stirred tank, are uniformly mixed, in porous material and binding agent are uniformly distributed in pressed powder prepared by step (1);
(3) material step (2) handled well and core carrier are together knocked down in granulating disc; under the condition of spraying water and heat; the material that step (2) is handled well rolls and invests on core carrier, then drying, cooling, namely obtains the granular pesticide finished product with slowly-releasing effect after screening.
2. there is the granular pesticide of slowly-releasing effect according to claim 1, it is characterized in that, formed after water met by described porous material and adhesive and make pesticide activity component have the cross linking membrane of slowly-releasing effect.
3. there is the granular pesticide of slowly-releasing effect according to claim 1 or 2, it is characterized in that, material, according to weight percent meter, comprises pesticide activity component 0.01% ~ 20%, auxiliary agent 1% ~ 5%, porous material 1% ~ 10%, binding agent 0.5% ~ 20%, core carrier 45% ~ 97%.
4. have the granular pesticide of slowly-releasing effect according to claim 3, it is characterized in that, described pesticide activity component is selected from one or more the mixture in insecticide, bactericide, weed killer herbicide.
5. have the granular pesticide of slowly-releasing effect according to claim 3, it is characterized in that, described auxiliary agent is selected from one or more the mixture in white carbon, anionic surfactant, nonionic surface active agent.
6. have the granular pesticide of slowly-releasing effect according to claim 3, it is characterized in that, micropore dextrin selected by described porous material.
7. have the granular pesticide of slowly-releasing effect according to claim 3, it is characterized in that, described binding agent is selected from one or both the mixture in sodium carboxymethyl starch, CMC, polyacrylamide.
8. have the granular pesticide of slowly-releasing effect according to claim 3, it is characterized in that, described core carrier is selected from the one in clay particle, kaolin particle, bentonite clay particle, trace element fertilizer particle, compound fertilizer granules.
9. have the granular pesticide of slowly-releasing effect according to claim 4, it is characterized in that, described insecticide selects Imidacloprid, Diacloden, clothianidin, MTI-446, thiacloprid, Nitenpyram, imidaclothiz, cycloxaprid; Dimehypo, Cupric sulfate, cartap, thiocyclam; Carbofuran, carbosulfan, Benfuracard micro, thiodicarb; Chlopyrifos, diazinon, fosthiazate, Hostathion, isocarbophos; One or more complex composition in Rynaxypyr, fipronil bisamide, four chlorantraniliproles, pymetrozine, ethiprole, Avermectin, emamectin benzoate, d ichlorbenzuron, monomethyl ether, Amitraz, Biphenthrin, cyfluthrin, ether chrysanthemum ester;
One or more complex compositions in own azoles alcohol, Tebuconazole, Difenoconazole, Flutriafol, olefin conversion, tmtd, thiophanate-methyl, tpn, Prochloraz, prochloraz-manganese chloride complex, hymexazo, metalaxyl, propamocarb, fenaminosulf, Fluoxastrobin, pyraclostrobin, kresoxim-methyl, thifluzamide, flutolanil, fluorine pyrrole bacterium acid amides, amino-oligosaccharide, kasugarnycin, steroid enol selected by described bactericide;
One or more the complex composition in Acetochlor, the third careless amine, isopropyl methoxalamine, pyrazosulfuron, mefenacet selected by described weed killer herbicide.
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| CN201410816824.6A Pending CN104521951A (en) | 2014-12-24 | 2014-12-24 | Pesticide granules with slow release effect |
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| CN104839224A (en) * | 2015-05-29 | 2015-08-19 | 杨新兰 | Organic fertilizer for sugarcanes |
| CN104855373A (en) * | 2015-05-08 | 2015-08-26 | 青岛海纳生物科技有限公司 | Clothianidin sustained-release granule and preparation method thereof |
| CN104871913A (en) * | 2015-06-08 | 2015-09-02 | 象州县科学技术情报研究所 | Cultivation method of big fruit hawthorn in Karst rock-desertification areas |
| CN104982453A (en) * | 2015-06-19 | 2015-10-21 | 青岛中达农业科技有限公司 | Insect and bacterium killing granula with dinotefuran |
| CN105010381A (en) * | 2015-07-03 | 2015-11-04 | 山东潍坊润丰化工股份有限公司 | Insecticidal composition containing thiamethoxam and emamectin benzoate and applications thereof |
| CN105494326A (en) * | 2015-12-15 | 2016-04-20 | 广西田园生化股份有限公司 | Microporous sponge slow-releasing pesticide block and preparation method thereof |
| CN105580803A (en) * | 2016-03-22 | 2016-05-18 | 广东中迅农科股份有限公司 | Slow-release pesticide granules with sepiolite as carrier and preparation method of slow-release pesticide granules |
| CN105935058A (en) * | 2016-05-07 | 2016-09-14 | 广东中迅农科股份有限公司 | Insecticidal sustained release granule containing carbosulfan and chlopyrifos, and preparation method thereof |
| CN106396959A (en) * | 2016-09-12 | 2017-02-15 | 佛山市盈辉作物科学有限公司 | Pesticide fertilizer composition containing fosthiazate and amino-oligosaccharin |
| CN106417286A (en) * | 2016-05-09 | 2017-02-22 | 张伟汉 | Pesticide film forming additive, preparation method therefor and use of pesticide film forming additive |
| CN107155762A (en) * | 2017-05-17 | 2017-09-15 | 贵州省林业科学研究院 | A kind of big tree engrafting method from stamen Camellia nitidissima |
| CN107372556A (en) * | 2017-07-10 | 2017-11-24 | 安徽丰乐农化有限责任公司 | A kind of suspension seed-coating agent containing pyraclostrobin, amino-oligosaccharide and Diacloden |
| CN108605965A (en) * | 2018-05-25 | 2018-10-02 | 安徽智博新材料科技有限公司 | A kind of preparation method of slow-release paddy field weeding granule |
| CN108935457A (en) * | 2018-07-26 | 2018-12-07 | 广西田园生化股份有限公司 | Application and method that controlled release pesticide as matrix is prepared using beeswax of the beeswax in realizing controlled-release pesticide |
| CN109293427A (en) * | 2018-09-28 | 2019-02-01 | 绩溪农华生物科技有限公司 | A kind of granular agricultural chemical formula and preparation method thereof |
| CN110604131A (en) * | 2019-09-30 | 2019-12-24 | 中国有色桂林矿产地质研究院有限公司 | Preparation method of porous material composition coated by pesticide-loaded slow-release degradable film |
| CN113545362A (en) * | 2021-07-21 | 2021-10-26 | 丹东明珠科技有限公司 | Coated granule containing sodium diurethane and preparation method thereof |
| CN115104612A (en) * | 2021-08-24 | 2022-09-27 | 汝阳自强生物科技有限公司 | Granular formulation for treating melon wilt and preparation method and application thereof |
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| CN104839224A (en) * | 2015-05-29 | 2015-08-19 | 杨新兰 | Organic fertilizer for sugarcanes |
| CN104839224B (en) * | 2015-05-29 | 2018-04-27 | 杨新兰 | A kind of sugarcane organic fertilizer |
| CN104871913A (en) * | 2015-06-08 | 2015-09-02 | 象州县科学技术情报研究所 | Cultivation method of big fruit hawthorn in Karst rock-desertification areas |
| CN104982453A (en) * | 2015-06-19 | 2015-10-21 | 青岛中达农业科技有限公司 | Insect and bacterium killing granula with dinotefuran |
| CN105010381A (en) * | 2015-07-03 | 2015-11-04 | 山东潍坊润丰化工股份有限公司 | Insecticidal composition containing thiamethoxam and emamectin benzoate and applications thereof |
| CN105494326A (en) * | 2015-12-15 | 2016-04-20 | 广西田园生化股份有限公司 | Microporous sponge slow-releasing pesticide block and preparation method thereof |
| CN105494326B (en) * | 2015-12-15 | 2018-02-23 | 广西田园生化股份有限公司 | A kind of microporous sponge shape sustained-release pesticides block agent and preparation method thereof |
| CN105580803A (en) * | 2016-03-22 | 2016-05-18 | 广东中迅农科股份有限公司 | Slow-release pesticide granules with sepiolite as carrier and preparation method of slow-release pesticide granules |
| CN105935058A (en) * | 2016-05-07 | 2016-09-14 | 广东中迅农科股份有限公司 | Insecticidal sustained release granule containing carbosulfan and chlopyrifos, and preparation method thereof |
| CN106417286A (en) * | 2016-05-09 | 2017-02-22 | 张伟汉 | Pesticide film forming additive, preparation method therefor and use of pesticide film forming additive |
| CN106396959A (en) * | 2016-09-12 | 2017-02-15 | 佛山市盈辉作物科学有限公司 | Pesticide fertilizer composition containing fosthiazate and amino-oligosaccharin |
| CN107155762A (en) * | 2017-05-17 | 2017-09-15 | 贵州省林业科学研究院 | A kind of big tree engrafting method from stamen Camellia nitidissima |
| CN107155762B (en) * | 2017-05-17 | 2020-03-10 | 贵州省林业科学研究院 | Big tree grafting method of pistil-separating golden camellia |
| CN107372556A (en) * | 2017-07-10 | 2017-11-24 | 安徽丰乐农化有限责任公司 | A kind of suspension seed-coating agent containing pyraclostrobin, amino-oligosaccharide and Diacloden |
| CN108605965A (en) * | 2018-05-25 | 2018-10-02 | 安徽智博新材料科技有限公司 | A kind of preparation method of slow-release paddy field weeding granule |
| CN108935457A (en) * | 2018-07-26 | 2018-12-07 | 广西田园生化股份有限公司 | Application and method that controlled release pesticide as matrix is prepared using beeswax of the beeswax in realizing controlled-release pesticide |
| CN109293427A (en) * | 2018-09-28 | 2019-02-01 | 绩溪农华生物科技有限公司 | A kind of granular agricultural chemical formula and preparation method thereof |
| CN110604131A (en) * | 2019-09-30 | 2019-12-24 | 中国有色桂林矿产地质研究院有限公司 | Preparation method of porous material composition coated by pesticide-loaded slow-release degradable film |
| CN113545362A (en) * | 2021-07-21 | 2021-10-26 | 丹东明珠科技有限公司 | Coated granule containing sodium diurethane and preparation method thereof |
| CN115104612A (en) * | 2021-08-24 | 2022-09-27 | 汝阳自强生物科技有限公司 | Granular formulation for treating melon wilt and preparation method and application thereof |
| CN115104612B (en) * | 2021-08-24 | 2023-10-27 | 汝阳自强生物科技有限公司 | Granule for treating melon wilt and preparation method and application thereof |
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