CN100442975C - Sustained releasing pesticide granule - Google Patents
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- CN100442975C CN100442975C CNB2005100866927A CN200510086692A CN100442975C CN 100442975 C CN100442975 C CN 100442975C CN B2005100866927 A CNB2005100866927 A CN B2005100866927A CN 200510086692 A CN200510086692 A CN 200510086692A CN 100442975 C CN100442975 C CN 100442975C
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Abstract
The invention relates to a slow-release pesticide granula, formed by pesticide active compound, modify amidon, powder and assist agents. Wherein, the invention also provides relative application; the granula can control the active component to be released to condition at preset speed; therefore, the invention can function the plant one time to control their growth in whole season.
Description
Technical field
The present invention relates to pesticide field, relate in particular to a kind of sustained releasing pesticide granule and application process thereof.
Background technology
Press the release characteristics classification of pesticide active ingredient, the formulations of pesticide can be divided into conventional type and the sustained release type two big classes that freely discharge.The efficient of conventional type agricultural chemicals has only 20～30%, and percent of loss by all means is up to 50～60%, this not only is a kind of waste economically, and the environmental pollution that has caused.Therefore, burst size, release time and Free up Memory are controlled, are important directions of chemical pesticide novel form research always.The core of control release technic is that macromolecular compound and agricultural chemicals are interacted, pesticide activity component can continue and is discharged into lentamente in the environment according to predefined concentration and time (needs according to the extermination of disease and insect pest are formulated), and can keep a particular concentration for a long time.Therefore, the slow release formulation of agricultural chemicals has reduced the influence of envirment factors such as water, air because the protective effect of polymer substance can make powder performance more stable; Secondly, slow release method can prolong the lasting period of same dose agricultural chemicals greatly, thereby can reduce access times and total consumption of agricultural chemicals, makes residual and possibility environmental pollution significantly reduces; Once more, slow release method can reduce the toxicity and the poisoning of agricultural chemicals.Therefore the pesticide slow-release technology is subjected to extensive concern, and original pesticide slow-releasing agent is mainly based on microencapsulation of pesticide, as, WO95/13698 discloses a kind of microcapsules sustained-release pesticides that is scattered in the solid biologic active component in the liquid; WO92/10285 discloses a kind of microcapsules sustained-release pesticides that contains pesticide activity component such as weed killer herbicide, insecticide or bactericide.
The shortcoming of above-mentioned microencapsulation of pesticide sustained release agent is that cyst wall costs an arm and a leg, the preparation expense is higher, still lack competitiveness economically, the final processing of wall material/polymer and its catabolite can not be ignored the influence of environment in addition, so microencapsulation of pesticide is promoted always widely.
Owing to spread fertilizer over the fields granule and almost do not have drift phenomenon, so granule is widely used on the agricultural, and granule can also reach correct optimal dose to be used, and this point is desirable.Yet, if the granule of regular dosage form is imposed on around the plant rhizosphere, excessive active component can take place in some cases be scattered in around the plant roots, cause the effect that poisoning and medicament take place plant only to keep the relatively short time.So, a kind of utilization ratio of drug height, cost is low, pollution is low, easy to use novel agrochemical formulation still need be provided.
Summary of the invention
(1) technical problem that will solve
Purpose of the present invention aims to provide a kind of sustained releasing pesticide granule, to overcome above-mentioned defective of the prior art.The present invention also aims to provide the application process of described sustained releasing pesticide granule.
(2) technical scheme
In order to address the above problem, the present inventor has carried out intensive research, found that a kind of sustained releasing pesticide granule of newtype.Sustained releasing pesticide granule of the present invention contains following composition: (1) at least a pesticide activity; (2) at least a modified starch; (3) at least a powder; (4) auxiliary material A and B; According to the needs of the length of particle release time, can be chosen in particle surface coating macromolecule coating.
Each concentration of component of sustained-release granular formulation of the present invention can change in certain scope, and these granules contain usually:
By sustained-release granular formulation weight 0.001～20%, one or more pesticide activity components of 0.1～10% preferably;
By sustained-release granular formulation weight 0.1～40%, 1～20% modified starch preferably;
By sustained-release granular formulation weight 40～90%, one or more powders of 60～85% preferably;
By sustained-release granular formulation weight 0.01～20%, one or more auxiliary material A of 0.1～2% preferably;
By sustained-release granular formulation weight 0.01～20%, one or more auxiliary material B of 0.1～5% preferably.
On meaning of the present invention, pesticide activity component can be understood as all materials commonly used of handling plant, and for example they are selected from one or more in fungicide, bactericide, insecticide, miticide, nematocide, weed killer herbicide and the plant growth regulator.
Particularly, described insecticide is to be selected from Imidacloprid, alkene to decide in worm amine, Benfuracard micro, carbosulfan, thiophene worm piperazine, dimehypo and the Rogor one or more.
Described antifungal and bacteriocin are to be selected from reaching one or more of thiophene fluorine bacterium amine, Garrick rust, carpropamid, the mould spirit of evil, carboxin, Prochloraz, carbendazim, metalaxyl, tmtd and Amici.
Described plant growth regulator is to be selected from one or more of casing coupling peace, uniconazole P, paclobutrazol and chlormequat.
Described miticide is to be selected from one or more of fenbutatin oxide, quinoline mite spy, Hexythiazox and azacyclotin.
Described nematocide is to be selected from one or more of fenamiphos, ethoprop, cadusafos, isazofos and Isofenphos methyl.
Described weed killer herbicide is to be selected from one or more of flumioxazin, propisochlor, piperazine humulone, molinate, symetryne and trefanocide.
In the present invention, the term modified starch should be appreciated that it is on the inherent characteristic basis that starch has, for improving its performance and enlarging its range of application, and adopt physical method, chemical method and enzyme process to change the natural character of starch, increase its new performance or introduce the prepared starch derivatives of new characteristic.As the spendable modified starch of the present invention, enumerate (and being not limited to) some examples below, inorganic acid ester starch for example is as phosphate ester starch, sulfuric ester starch, nitrate starch; Organic acid esters starch is as formic acid esters starch, acetate starch, propionic ester starch, stearate starch; Starch ether is as hydroxymethyl starch, hydroxyalkyl starch, cationic starch, anionic starch, crosslinked starch; Dextrin, as in alpha-cyclodextrin, beta-schardinger dextrin-, gamma-cyclodextrin and the 2-hydroxy propyl-Beta cyclodextrin etc. one or more, all these starch all are the products that can obtain from the market.
Particularly preferred modified starch is formic acid esters starch, crosslinked starch, alpha-cyclodextrin.
On meaning of the present invention, the term powder should be appreciated that it is in the art usually as the powder material of granule.Can enumerate (and being not limited to) potash, quartz sand, opal, clay, calcium oxide, barium monoxide, magnesium chloride, Ammonium bicarbonate food grade, aluminium chloride, silica, wollastonite, mica powder, talcum powder, superphosphate, potassium chloride, the peat composed of rotten mosses below.
Particularly preferably be clay, bentonite, superphosphate, the peat composed of rotten mosses, calcium carbonate.
On meaning of the present invention, auxiliary material A should be appreciated that it is normally used in the art crosslinking agent, surfactant.Sustained releasing pesticide granule of the present invention randomly can contain the auxiliary material A that one or more is selected from crosslinking agent, surfactant.
In the present invention, the hydrophily of starch material is stronger, thereby when starch capsule agricultural chemicals goods are immersed in water swelling in the farmland after, cyst wall density descends, with the rate of release of medicament is increased substantially, had a strong impact on its service life, limited its scope of application.Therefore, to reduce the water-soluble bloated degree of starch matrix in order reaching, to play the purpose of slow releasing function, use crosslinking agent to make starch matrix crosslinked, normally used crosslinking agent for example is formaldehyde, sulphur virgin rubber and urea aldehyde.
Sustained releasing pesticide granule of the present invention can contain normally used surfactant in such granule.These surfactants comprise anion surfactant and non-ionic surface active agent.The preferred anionic surfactants surfactant is the salt of sodium lignin sulfonate, dialkyl sulfosuccinate succinic acid and alkyl benzene sulphonate; Preferred nonionic is a polyoxyethylene styryl phenyl ether, and all these surfactants all are the products that can obtain from the market.
Sustained releasing pesticide granule of the present invention randomly can contain one or more and be selected from following auxiliary material B: adhesive, preservative etc.
As this adhesive, for example can enumerate gum Arabic, gelatin, polyvinyl alcohol, polyvinyl methyl ethermaleic anhydride, polyacrylamide, attapulgite.Particularly preferably be gum Arabic, polyvinyl alcohol, attapulgite.
Described preservative for example is benzoic acid, Sodium Benzoate, calcium propionate, boric acid and carbendazim etc.
Needs according to particle release time length, can be chosen on the sustained releasing pesticide granule of the present invention surface and be coated with polymeric membrane, this macromolecule coated fertilizer is for example to be selected to give birth to tung oil, boiled wood oil, one or more in refining or refining castor oil, linseed oil, peanut oil, the soybean oil not, preferably boiled wood oil and/or linseed oil, the coated fertilizer consumption is by weight percentage: 0.1～20%.
The preparation method of sustained releasing pesticide granule of the present invention, this method may further comprise the steps:
(1) with certain density modified starch water slurry 30～100 ℃ of gelatinizations, wherein the weight ratio of modified starch and water is 1: 1～20, preferably 1: 2～10.Preferably under 50～90 ℃ temperature, carry out described gelatinization.
(2) with the product of step (1) with described pesticide activity component and described auxiliary material A high-speed stirred under 10～100 ℃ of temperature fully mix; Preferably under 20～60 ℃ temperature, mix; Mixing speed is 1000～3000 rev/mins, mixing time normally 1～15 minute, preferably 3～10 minutes.
(3) product of step (2) is placed gel 1～24h at 0～30 ℃, preferably 1～6h, drying, pulverizing then; Baking temperature is normally at 40～80 ℃, preferably 40～60 ℃.Dry device type can be any drying equipment known in this technical field.Typical drier can be the drier and the normal pressure baking oven of rotation type.
(4) product and described powder, the described auxiliary material B with step (3) mixes, and granulation is also dry.Usually dish nodulizer in use garden carries out granulation, and the rotating speed of rotating granulation device is 30～180 rev/mins.The particle diameter of sustained-release granular formulation of the present invention can change in certain scope, and usually, particle diameter is 0.3mm～3.0mm.In order to adjust particle size, can use the classifying equipoment of common employing, commonly used is grading sieve.
According to the length of particle release time, the product of step (4) can be added to its product of coating in the coated fertilizer.Usually film at normal temperatures, used device for coating can be the plate-like blender, cement mixer, small-sized rotating cylinder blender etc.
The invention still further relates to the application process of sustained releasing pesticide granule, can adopt conventional method that sustained releasing pesticide granule is spread fertilizer over the fields around plant rhizosphere, but the concrete application process on different plants is different.For example be used for the field crop prevention and elimination of disease and pests, in the time of can or transplanting in sowing sustained releasing pesticide granule of the present invention by with manually spread fertilizer over the fields in sow or the transplanting ditch in; Or spread fertilizer over the fields in the damage by disease and insect of root soil at crop one side trench digging in during plant growth with the control specific period; When being used for lawn whole process dwarfing, can be by spreading fertilizer over the fields on lawn surface with artificial or machinery; Be used for the paddy rice prevention and elimination of disease and pests, can directly spread fertilizer over the fields in the water of paddy field.
The dosage of granule of the present invention can change in wide scope.Dosage depends on the concentration of reactive compound in granule.Preferred application dosage is 3～20g/m
2
(3) beneficial effect
Pesticide slow-release granule of the present invention has many good effects: because active component continues by predefined concentration and time (needs according to the extermination of disease and insect pest are formulated) and is discharged in the environment lentamente, the result is the drug injury problem that does not exist plant, and the effect of active component can be kept a segment length time, prolonged the lasting period of agricultural chemicals, reduce spraying times, save the laxative cost.The more conspicuous advantage of the present invention is this main slow-release material modified starch aboundresources, and is with low cost, so the sustained release agent cost is low, also biodegradable, do not constitute the pollution to environment.
In a word, have now found that, handling plant, particularly agricultural chemicals is spread fertilizer over the fields when being used for around the plant rhizosphere, sustained releasing pesticide granule of the present invention has outstanding effect.It is discharged in the surrounding environment according to predetermined speed or with lower speed go in preset time because granule of the present invention can be controlled active component, so they are particularly suitable for controlling the whole growth season damage by disease and insect or the excessive growth of (or certain growth phase) around the applied once crop rhizosphere.
Embodiment
The following examples are to further specify various aspects of the present invention, just to explanation purpose of the present invention, rather than protection scope of the present invention are limited.
Embodiment 1 prepares the not slowly-releasing Imidacloprid granule of coating
A) 100 gram alpha-cyclodextrins are added in the 400 gram water,, in heating process, constantly stir 80 ℃ of gelatinizations 120 minutes;
B) alpha-cyclodextrin, 20 gram Imidacloprids, 5 gram dioctyl sulfo group sodium sulfonates and the 5 gram formaldehyde with gelatinization in (a) mixed 5 minutes with 3000 rev/mins under 20 ℃.
C) then, (b) resulting mixture is placed gel 8h down at 25 ℃, then oven drying under 75 ℃ temperature is pulverized then.
D) with product, 1820 gram bentonites and the 50 gram polyvinyl alcohol of step (c), the nodulizer granulation is coiled in the employing garden, and its rotating speed is 90 rev/mins, and by grading sieve, screening obtains required size particles, and these particles carry out drying again.
Obtain the slowly-releasing Imidacloprid granule of 1% not coating.
Embodiment 2 preparation coated slow-release Imidacloprid granules
A) 100 gram hydroxymethyl starches are added in the 400 gram water,, in heating process, constantly stir 30 ℃ of gelatinizations 120 minutes;
B) hydroxymethyl starch, 20 gram Imidacloprids, 20 gram sodium lignin sulfonates and the 5 gram formaldehyde with gelatinization in (a) mixed 5 minutes with 3000 rev/mins under 20 ℃.
C) then, at 25 ℃ of following gel 8h, then oven drying under 75 ℃ temperature is pulverized then with (b) resulting mixture.
D) with product, 1000 gram clays, 650 gram potassium chloride and the 50 gram polyvinyl alcohol of step (c), by garden dish nodulizer granulation container, rotating speed is at 90 rev/mins, and by grading sieve, screening obtains required size particles, and these particles carry out drying again.
E) take by weighing 60 gram castor oil and 60 gram soybean oils, 50 gram curing agent stir, and then the particle of step (d) are added in this mixture, mix the back and be coated with coating on particle.
Obtain 1% coated slow-release Imidacloprid granule.
Embodiment 3 prepares not coated slow-release uniconazole P granule
A) 100 gram sulfuric ester modified starches are added in the 125 gram water,, in heating process, constantly stir 40 ℃ of gelatinizations 60 minutes;
B) with sulfuric ester modified starch, 10 gram uniconazole Ps, 20 gram sodium lignin sulfonates and the 10 gram formaldehyde of gelatinization in (a) under 50 ℃ with 1000 rev/mins of stirrings, mixed 10 minutes.
C) then, with (b) resulting mixture at 10 ℃ of following gel 4h.Then oven drying under 60 ℃ temperature is pulverized then.
D) product, 900 gram superphosphate, 600 gram Ammonium bicarbonate food grades, 260 potassium chloride and 100 with step (c) restrain attapulgites, by garden dish nodulizer granulation container, rotating speed passes through grading sieve at 60 rev/mins, screening obtains required size particles, and these particles carry out drying again.
Obtain 0.5% not coated slow-release uniconazole P granule.
Embodiment 4 preparation coated slow-release uniconazole P granules
A) 60 gram propionic ester starch and 60 gram 2-hydroxy propyl-Beta cyclodextrin are added in the 1200 gram water,, in heating process, constantly stir 50 ℃ of gelatinizations 60 minutes;
B) with the propionic ester starch of gelatinization in (a) and 2-hydroxy propyl-Beta cyclodextrin, 10 gram uniconazole Ps, 2 gram sodium lignin sulfonates and 3 gram formaldehyde under 50 ℃ with 2000 rev/mins of stirrings, mixed 1 minute.
C) then, with (b) resulting mixture at 30 ℃ of following gel 24h.Then, oven drying under 40 ℃ temperature is pulverized then.
D) with product, 1000 gram superphosphate, 755 gram potassium chloride and the 100 gram attapulgites of step (c), the nodulizer granulation is coiled in the employing garden, and rotating speed is 60 rev/mins, and by grading sieve, screening obtains required size particles, and these particles carry out drying again.
E) take by weighing 40 gram boiled wood oils and 40 gram linseed oil, 30 gram curing agent stir, and the particle of step (d) are added in this mixture again, mix the back and be coated with coating on particle.
Obtain 0.5% coated slow-release uniconazole P granule.
Embodiment 5 preparation coated slow-release Benfuracard micro granules
A) 100 gram crosslinked starch are added in the 200 gram water,, in heating process, constantly stir 80 ℃ of gelatinizations 60 minutes;
B) crosslinked starch, 100 gram Benfuracard micros, 20 gram polyoxyethylene styryl phenyl ethers and the 10 gram formaldehyde with gelatinization in (a) mixed 5 minutes with 2000 rev/mins under 50 ℃.
C) then, with (b) resulting mixture at 30 ℃ of following gel 5h.Then oven drying under 80 ℃ temperature is pulverized then.
D) with product, 1520 gram clays and the 100 gram polyvinyl alcohol of step (c), by garden dish nodulizer granulation container, rotating speed is 60 rev/mins, and by grading sieve, screening obtains required size particles, and these particles carry out drying again.
E) take by weighing 100 gram linseed oil and 20 gram peanut oil,, add 10 gram curing agent then, stir, the particle of step (d) is added in this mixture, mix the back and on particle, be coated with coating 200～250 ℃ of heating 20 minutes.
Obtain 5.0% coated slow-release Benfuracard micro granule.
Embodiment 6 preparation coated slow-release thiophene worm piperazine granules
A) 100 gram alpha-cyclodextrins are added in the 800 gram water,, in heating process, constantly stir 6 ℃ of gelatinizations 120 minutes;
B) alpha-cyclodextrin, 10 gram thiophene worm piperazines, 20 gram this quality sodium sulfonates and the 5 gram formaldehyde with gelatinization in (a) mixed 8 minutes with 2000 rev/mins under 50 ℃.
C) then, with (b) resulting mixture at 30 ℃ of following gel 12h.Then oven drying under 50 ℃ temperature is pulverized then.
D) with product, 1660 gram calcium carbonate and the 50 gram polyvinyl alcohol of step (c), by garden dish nodulizer granulation container, rotating speed is 60 rev/mins, and by grading sieve, screening obtains required size particles, and these particles carry out drying again.
E) take by weighing 120 gram linseed oil,, add 30 gram curing agent then and stir, then the particle of step (d) is added in this mixture, mix the back and on particle, be coated with coating 200-250 ℃ of heating 20 minutes.
Obtain 0.5% coated slow-release thiophene worm piperazine granule.
Embodiment 7 preparation coated slow-release dimehypo granules
A) 60 gram alpha-cyclodextrins and 60 gram 2-hydroxy propyl-Beta cyclodextrin are added in the 1000 gram water,, in heating process, constantly stir 50 ℃ of gelatinizations 90 minutes;
B) alpha-cyclodextrin, 100 gram dimehypos, 20 gram sodium lignin sulfonates and the 50 gram formaldehyde with gelatinization in (a) mixed 3 minutes with 2500 rev/mins under 50 ℃.
C) then, with (b) resulting mixture at 30 ℃ of following gel 24h.Then oven drying under 40 ℃ temperature is pulverized then.
D) with product, 1530 gram bentonites and the 80 gram gum Arabics of step (c), by garden dish nodulizer granulation container, rotating speed is 40 commentaries on classics part clocks, and by grading sieve, screening obtains required size particles, and these particles carry out drying again.
E) take by weighing 80 gram tung oil, 20 gram curing agent stir, and then the particle of step (d) are added in this mixture, mix the back and be coated with coating on particle.
Obtain 5% coated slow-release dimehypo granule.
Embodiment 8 preparation coated slow-release Garrick rust granules
A) 80 grams are added in formic acid esters starch and 30 crosslinked starch, the 400 gram water,, in heating process, constantly stir 60 ℃ of gelatinizations 60 minutes;
B) modified starch of gelatinization in (a), salt and the 5 gram formaldehyde that 4 Francis Cricks rust, 1 restrains alkyl benzene sulphonate were mixed 6 minutes with 1500 rev/mins under 40 ℃.
C) then, at 25 ℃ of following gel 20h, then oven drying under 55 ℃ temperature is pulverized then with (b) resulting mixture.
D) with product, 1675 gram talcum powder and the 50 gram polyvinyl alcohol of step (c), by garden dish nodulizer granulation container, rotating speed is 30 rev/mins, and by grading sieve, screening obtains required size particles, and these particles carry out drying again.
E) take by weighing 120 gram castor oil, 30 gram curing agent stir, and then the particle of step (d) are added in this mixture, mix the back and be coated with coating on particle.
Obtain 1% coated slow-release Garrick rust granule.
The preparation of comparative example's 9 Comparative formulation uniconazole P granules
10 gram uniconazole Ps, 20 gram dioctyl sulfo group sodium sulfonates, 1870 gram superphosphate and 100 gram attapulgites, by garden dish nodulizer granulation container, rotating speed is 60 rev/mins, and by grading sieve, screening obtains required size particles, and these particles carry out drying again.
Obtain 0.1% uniconazole P granule
The test of embodiment 10 pesticide activity component rate of release
The respectively not coated slow-release uniconazole P granule of the comparative example's 9 of weighing 1.60g 0.5% conventional uniconazole P granule, 0.5% embodiment 2,0.5% embodiment 3 coated slow-release uniconazole P granules, and the former medicine preparation of uniconazole P, they are put in respectively in the beaker of 1000ml, in beaker, pour 1000ml distilled water into respectively again.After 1,2,3,4,5,6,7,8,9,10,16,24 day, take out 10ml water, adopt high performance liquid chromatography that the uniconazole P concentration that is discharged into from preparation in the water is analyzed.The results are shown in the following table 1.
As shown in table 1, after 8 days, the concentration that the uniconazole P of comparative example's 9 uniconazole P granules is discharged in the water is the following time of situation of 7.95mg/kg, the concentration that the coated slow-release uniconazole P granule of the not coated slow-release uniconazole P granule of 0.5% embodiment 2,0.5% embodiment 3 is discharged in the water is respectively 3.02mg/kg and 1.56mg/kg, and this speed that shows that uniconazole P is discharged in the water is controlled.Film at particle surface, the diffusion of pesticide activity component can be subjected to effective inhibition more.
Table 1
The test of embodiment 11 field control aphids
Radish (kind: red flesh) when sowing is applied in 1.0% slowly-releasing Imidacloprid granule of embodiment 1 preparation in the seed furrow simultaneously, and the sub-district area is 1m * 4m, on each sub-district respectively the amount in the particulate application agent be respectively 3g, 6g, 12g, repeat for three times.For the ease of relatively, establish blank, the mixture of promptly using 1 part of 10% imidacloprid wettable powder and 9 parts of fine sands is preparation as a comparison.When aphid was taken place, aphid generating capacity of investigation in per 7 days calculated the control efficiency of medicament to aphid.Result of the test is listed in the table below 2.
Table 2
Above-mentioned test shows, the slowly-releasing Imidacloprid granule of embodiment 1 once applies the harm that can omnidistance control aphid when radish is sowed, and compare with the mixture of 9 parts of fine sands with 1 part of 10% imidacloprid wettable powder, its control efficiency and lasting period all significantly improve.
The omnidistance dwarfing in embodiment 12 lawns tested
The slowly-releasing uniconazole P uniform particles that contains embodiment 3 is spread fertilizer over the fields on the lawn, and the sub-district area is 100cm * 100cm, spreads fertilizer over the fields uniconazole P active ingredient 0.3g, 0.6g, 0.9g respectively in the sub-district.For the ease of relatively, establish blank, contrast 1 is former medicine of uniconazole P and husky mixture, each sub-district dosage is 0.6g, mixes directly and spreads fertilizer over the fields, each sub-district 0.6g of dosage.Reach the sharp rate of doing every lawn height of investigation in 15 days after the dispenser.Plant height shows inhibitory action and the duration of medicament to lawn growth by inquiry.Whether the turfgrass blade is top withered by inquiry, calculates and does sharp rate, estimates the extent of injury of preparation to the lawn, and it is big more to the injury on lawn to do the high more explanation medicament of sharp rate.
Its result of the test is listed in table 3, and these results are 3 mean values that repeat.
Table 3
Above-mentioned test shows, slowly-releasing uniconazole P granule of the present invention can effectively be controlled the release of pesticide activity component, the injury on lawn is obviously compared than preparation and former medicine much less, and can effectively control the growth on lawn, (control time can reach more than 1 year) excessive growth in the dispenser controlled lawn regular period, the turf-mown frequency can obviously reduce, and the lawn water consumption reduces the resistance enhancing.
Claims (12)
1, a kind of sustained releasing pesticide granule is characterized in that, described granule is to adopt the method that comprises the steps to prepare:
(1) takes by weighing pesticide activity component 0.001～20%, modified starch 0.5～40%, powder 40～90%, auxiliary material A 0.01～20%, auxiliary material B 0.01～20% by weight percentage;
(2) modified starch being mixed with mass volume ratio concentration is 5～100% modified starch water slurry, carries out gelatinization under 30～100 ℃;
(3) product and auxiliary material A, the pesticide activity component with step (2) mixed 1～15 minute with 1000～3000 rev/mins under 10～100 ℃ of temperature;
(4) product of step (3) was placed gel 1～24 hour down at 0～30 ℃, dry under 40～80 ℃ of temperature then, pulverize;
(5) product and powder, the auxiliary material B with step (4) mixes, granulation, drying, screening obtain the granule that particle diameter is 0.3～3.0mm;
Described pesticide activity component is selected from one or more in fungicide, bactericide, insecticide, miticide, nematocide, weed killer herbicide and the plant growth regulator;
Described modified starch is selected from one or more in phosphate ester starch, sulfuric ester starch, nitrate starch, formic acid esters starch, acetate starch, propionic ester starch, stearate starch, hydroxymethyl starch, hydroxyalkyl starch, cationic starch, anionic starch, the crosslinked starch;
Described powder is one or more in potash, quartz sand, opal, clay, calcium oxide, barium monoxide, magnesium chloride, Ammonium bicarbonate food grade, aluminium chloride, silica, wollastonite, mica powder, talcum powder, bentonite, superphosphate, potassium chloride, the peat composed of rotten mosses;
Described auxiliary material A is one or more of crosslinking agent, anion surfactant, non-ionic surface active agent;
Described auxiliary material B is one or more of adhesive, preservative.
2, sustained releasing pesticide granule according to claim 1 is characterized in that, the raw material consumption by weight percentage: pesticide activity component 0.1～10%, modified starch 1～20%, powder 60～85%, auxiliary material A 0.1～2%, auxiliary material B 0.1～5%.
3, sustained releasing pesticide granule according to claim 1 and 2 is characterized in that, described granule is to adopt the method that comprises the steps to prepare:
(1) modified starch being mixed with mass volume ratio concentration is 10～50% modified starch water slurry, carries out gelatinization under 50～90 ℃;
(2) product and auxiliary material A, the pesticide activity component with step (1) mixed 3～10 minutes with 1000～3000 rev/mins under 20～60 ℃ of temperature;
(3) product of step (2) was placed gel 1～6 hour down at 0～30 ℃, dry under 40～60 ℃ of temperature then, pulverize;
(4), product and powder, the auxiliary material B with step (3) mixes, granulation, drying, screening obtain the granule that particle diameter is 0.3～3.0mm.
4, sustained releasing pesticide granule according to claim 1 and 2 is characterized in that, in the product adding coated fertilizer with described step (4), mixes coating at normal temperatures.
5, sustained releasing pesticide granule according to claim 4, it is characterized in that, wherein said coated fertilizer is selected from living tung oil, boiled wood oil, one or more in refining or refining castor oil, linseed oil, peanut oil, soybean oil and the curing agent not, and the coated fertilizer consumption is by weight percentage: 0.1～20%.
6, sustained releasing pesticide granule according to claim 3 is characterized in that, in the product adding coated fertilizer with described step (4), mixes coating at normal temperatures.
7, sustained releasing pesticide granule according to claim 6, it is characterized in that, wherein said coated fertilizer is selected from living tung oil, boiled wood oil, one or more in refining or refining castor oil, linseed oil, peanut oil, soybean oil and the curing agent not, and the coated fertilizer consumption is by weight percentage: 0.1～20%.
8, the application process of a kind of claim 1,2,5,6,7 each described sustained releasing pesticide granules, it is characterized in that, when crop sowing or transplanting, sustained releasing pesticide granule is spread fertilizer over the fields in the soil, or spread fertilizer over the fields in the soil of crop root at trench digging during the plant growth.
9, the application process of the described sustained releasing pesticide granule of a kind of claim 3 is characterized in that, when crop sowing or transplanting sustained releasing pesticide granule is spread fertilizer over the fields in the soil, or spreads fertilizer over the fields in the soil of crop root at trench digging during the plant growth.
10, the application process of the described sustained releasing pesticide granule of a kind of claim 4 is characterized in that, when crop sowing or transplanting sustained releasing pesticide granule is spread fertilizer over the fields in the soil, or spreads fertilizer over the fields in the soil of crop root at trench digging during the plant growth.
11, the application process of sustained releasing pesticide granule according to claim 8 is characterized in that, spreads fertilizer over the fields sustained releasing pesticide granule in the paddy field or on the lawn.
12, according to the application process of claim 9 or 10 described sustained releasing pesticide granules, it is characterized in that, spread fertilizer over the fields sustained releasing pesticide granule in the paddy field or on the lawn.
Priority Applications (1)
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| CNB2005100866927A CN100442975C (en) | 2005-10-21 | 2005-10-21 | Sustained releasing pesticide granule |
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| CNB2005100866927A CN100442975C (en) | 2005-10-21 | 2005-10-21 | Sustained releasing pesticide granule |
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| CN1951186A CN1951186A (en) | 2007-04-25 |
| CN100442975C true CN100442975C (en) | 2008-12-17 |
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Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101390513B (en) * | 2008-10-17 | 2011-10-05 | 中国农业大学 | Uniconazole-cyclodextrin clathrate, preparation method and use thereof |
| CN101779626B (en) * | 2010-02-11 | 2013-09-11 | 中国农业大学 | Uniconazole slow-release microcapsules and preparation method thereof |
| CN102060603A (en) * | 2010-10-22 | 2011-05-18 | 陕西安德瑞普生物化学有限公司 | Granules capable of sowing with seeds together |
| CN102432392A (en) * | 2011-09-28 | 2012-05-02 | 广东中迅农科股份有限公司 | Drug fertilizer granules for controlling watermelon wilt and preparation method thereof |
| CN102696586B (en) * | 2012-06-15 | 2014-03-12 | 河南好年景生物发展有限公司 | Mixed granular preparation with slow/controlled-release pesticide granules and non-slow/controlled-release pesticide granules |
| CN102823586B (en) * | 2012-09-19 | 2014-02-19 | 河南好年景生物发展有限公司 | Slow-release pesticide granule |
| CN104072284A (en) * | 2014-06-20 | 2014-10-01 | 裴秀琴 | Sustained-dissolved type chemical fertilizer |
| CN104521954B (en) * | 2014-12-10 | 2016-08-24 | 湖南国发精细化工科技有限公司 | The preparation method of 10% carbofuran granule sustained-release pesticides |
| CN104604878B (en) * | 2015-02-16 | 2016-05-18 | 河南科技学院 | One has interior suction concurrently and slow control release type kills mite granule and its preparation method and application |
| WO2018058193A1 (en) * | 2016-09-29 | 2018-04-05 | Commonwealth Scientific And Industrial Research Organisation | Controlled release agrichemical composition |
| CN106631553A (en) * | 2016-10-29 | 2017-05-10 | 赖坤流 | Preparation method for plant ash granular fertilizer |
| CN106818847A (en) * | 2017-03-15 | 2017-06-13 | 合肥华创现代农业科技有限公司 | A kind of starch sustained-release micro-spheres comprising effective cypermethrin and preparation method thereof |
| CN107251896B (en) * | 2017-07-18 | 2021-04-09 | 华中农业大学 | Enzyme-responsive insecticidal slow-release agent and preparation method thereof |
| 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 |
| CN113940343B (en) * | 2020-07-17 | 2023-09-08 | 汕头市深泰新材料科技发展有限公司 | Paraquat composition containing esterified starch and application of paraquat composition to attenuation of mammals |
| CN113940342A (en) * | 2020-07-17 | 2022-01-18 | 汕头市深泰新材料科技发展有限公司 | Paraquat composition containing cyclodextrin derivative and application of paraquat composition to attenuation of mammals |
| CN112385652B (en) * | 2020-09-21 | 2023-11-10 | 中国农业科学院植物保护研究所 | Sustained-release granule suitable for agricultural unmanned aerial vehicle broadcasting |
| CN114027298B (en) * | 2021-12-13 | 2023-03-14 | 广西大学 | Preparation method and application of environment-responsive controlled-release pesticide preparation |
| CN114514927A (en) * | 2021-12-31 | 2022-05-20 | 广西田园生化股份有限公司 | Nano pesticide suspoemulsion taking fatty acid starch ester as coating matrix and preparation method thereof |
| CN114698633B (en) * | 2022-04-11 | 2023-06-20 | 山东汤普乐作物科学有限公司 | Granules containing uniconazole and preparation method thereof |
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| CN1151152A (en) * | 1994-06-24 | 1997-06-04 | 挪威海德罗公开有限公司 | Agricultural composition and conditioning agent for reducing hygroscopicity and dust formation of fertilizers |
| CN1684583A (en) * | 2002-09-25 | 2005-10-19 | 明治制果株式会社 | Sustained-release pesticide granules |
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| CN1951186A (en) | 2007-04-25 |
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