CN102177906B - A kind of effervescent table as agricultural chemical and preparation method thereof - Google Patents
A kind of effervescent table as agricultural chemical and preparation method thereof Download PDFInfo
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- CN102177906B CN102177906B CN201110063285.XA CN201110063285A CN102177906B CN 102177906 B CN102177906 B CN 102177906B CN 201110063285 A CN201110063285 A CN 201110063285A CN 102177906 B CN102177906 B CN 102177906B
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Abstract
The invention discloses a kind of effervescent table as agricultural chemical containing halosulfuronmethyl and the third careless amine and preparation method thereof.Its active ingredient: the weight percentage of halosulfuronmethyl is 0.5%-5%, the weight percentage of the third careless amine is 10%-25%, and all the other are auxiliary agents.Effervescent tablet of the present invention can adopt direct compressing dry granulation method and wet granulation again pressed disc method be prepared: the former is obtained by mechanical crushing auxiliary agent, mixing auxiliary agent and two kinds of former medicines, direct tablet compressings; The latter, by dry two kinds of former medicines, grinding aids, prepares acid softwood and alkaline softwood through mixing, bonding, whole grain, the method that last compressing tablet is obtained.The effervescent tablet of preparation is a kind of environmental protection, pesticides new formulation product easy to use, and the present invention effectively can prevent and treat the multiple weeds such as paddy rice seedling throwing field and transplant field broad-leaved, grass family and sedge family.
Description
Technical field
The present invention relates to a kind of effervescent table as agricultural chemical and preparation method thereof, particularly with halosulfuronmethyl and the third careless amine herbicidal composition that is active ingredient and preparation method thereof, this composition pesticide can be applied to weeds such as removing in paddy field multiple broad-leaved, grass family and sedge family.
Background technology
China's rice cultivation area reaches about 3,000,000 hectares, occupy the 2nd, the world, the weeds that generally occur of the whole nation have barnyard grass, fescue, Herba Cyperi Glomerati, difformed galingale herb, weeds are buried, pondweed, Monochoria vaginalis etc., weeds in paddy field extent of injury area of (2-5 level) more than medium reaches 1546.7 ten thousand hectares, wherein serious harm (4-5 level) area is 3,800,000 hectares, account for 46.8% and 11.5% of Monitoring of Paddy Rice Plant Area respectively, the grain loss that China causes because of Weed infestation is every year more than 20,000,000,000 kilograms.
Current herbicides for use in paddy principal item is bensulfuron-methyl, pyrazosulfuron, butachlor, propisochlor, mefenacet single dose and mixture preparation thereof, and is often processed into the formulation uses such as granule, fine granule, wetting powder, soluble powder, suspension emulsion, missible oil.Generally need during use be watered dilution or could spray or spread fertilizer over the fields after being made into pesticide-clay mixture, troublesome poeration, labour intensity are large, and often have because medication metering is inaccurate or dispenser is uneven and cause rice seedlings to be injured, hinder the growth of paddy rice, when especially using missible oil, the organic solvent in composition not only affects the healthy of operator and goes back contaminated environment simultaneously.
Effervescent tablet technology is be applied in medical pharmacy at first, starts effervescent tablet technology to be applied in formulations of pesticide processing to phase earlier 1970s Japan.China also starts the research having this respect in recent years, now commercially also start have the pesticide effervescence sheet of several kind to sell, as the 18% benzyl dichloro effervescent tablet herbicide that Red Sun Group Co., Ltd. produces, 20% pyrazosulfuron effervescent tablet that Anhui chemical research institute produces.But current effervescent tablet kind is single, it is narrow also to there is herbicide spectrum in some kinds, dangerous to paddy rice, is not suitable for the shortcoming used in South Rice Region of China.
Halosulfuronmethyl (Halosulfuron methyl), chemical name: 3-(4,6-dimethoxypyridin-2-base)-1-(1-methyl-3-chloro-4-methoxy formoxyl pyrazoles-5-base) sulfonylureas.CAS：100784-20-1。Halosulfuronmethyl belongs to sulfonylurea selectivity inner sucting herbicide, can be used for rice field and prevents and kill off broad leaved weed and sedge weed, but poor to the grassy weed such as barnyard grass, moleplant seed effect.Third careless amine (pretilachlor), chemical name: 2-chloro-2,6 '-diethyl N-(2-third oxygen ethyl) acetanil, CAS:51218-49-6.Third careless amine belongs to acetamide-group herbicides, it is weed killer herbicide grassy weed to greater activity, it is very effective to grassy weeds such as non-irrigated barnyard grass, rice barnyard grass, moleplant seed, lady's-grass, green foxtail, Paspalum distichum, eleusine indica, bent grass, is one of the most effective medicament preventing and treating paddy fields in south china barnyard grass, moleplant seed at present.There is obvious synergistic effect by after halosulfuronmethyl and the third careless amine mixture to moleplant seed and barnyard grass, in addition, after the third careless amine and halosulfuronmethyl mixture, strong detoxication is shown to paddy rice.Therefore halosulfuronmethyl is become preparation with the third careless amine mixture, not only can reduce production cost, expand herbicidal spectrum, improve preventive effect, and the safety coefficient to paddy rice can be improved, reduce poisoning odds.Yet there are no mixture preparation and the effervescent tablet of halosulfuronmethyl and the third careless amine.
After the medicament mixture that halosulfuronmethyl and the third careless amine two kinds of different herbicides are composed, herbicide spectrum is wider, safer to paddy rice, not only can be used as seedling throwing field weeding but also can the weeding of transplanting rice field be used as, applicable surface is wider, solves the upper two kinds of single doses of production at present and is used alone the undesirable problem of drug effect.Halosulfuronmethyl and the third careless amine mixture preparation are developed to effervescent tablet, in formulation, have new breakthrough again, this, to raising China formulations of pesticide level of processing, improves agricultural production efficiency, promotes that level of agricultural production has great importance.
Open source literature also reports some about effervescent tablet.Such as: Chinese Patent Application No.: CN00107465.2 publication number: CN1283388 denomination of invention: a kind of effervescent table as agricultural chemical and method for making thereof, inventor: Luo Yanhong, Feng Juntao, Fan Hongmei, Chen Anliang, open emerging applicant: Nuisanceless Pesticide Research Service Center, Xibei Agroforestry Science and T, summary: effervescent table as agricultural chemical is made up of pesticide original medicine, acid source, carbon dioxide source, waterproofing agent, insecticides adjuvant.First obtain soft material during manufacture, then compressing tablet obtains effervescent table as agricultural chemical, various Insecticidal and acaricidal agent, bactericide, weed killer herbicide, plant growth regulator can be made effervescent tablet.This tablet volume is little, transports and store very convenient, and during use, this tablet can disintegration and become sprayable agricultural-chemical suspension liquid automatically in water, also can shed use in paddy field.Can be widely used in agricultural production.Chinese Patent Application No.: CN98119079.0 publication number: CN1247702 denomination of invention: effervescent pesticide for rice field, inventor: Wu Xiuhua, Chen Weilin, Zheng Caihua, Yi Xiucheng, Liu Zhonghua, the precious applicant of Shen state: Agricultural Chemical Preparation Engineering Technology Centre, Ministry of Che, summary: a kind of effervescent pesticide for rice field, by weed killer herbicide 2-[[[[(4.6-dimethoxypyridin-2-base) is amino] carbonyl] is amino] sulfonvlmethvl] methyl benzoate, 3.7-dichloroquinoline-8-carboxylic acid and insecticide 1-(6-chloro-3-pyridyl ylmethyl)-N-Nitroimidazoline-2 base amine and solid acid, carbonate mixes rear pulverizing in proportion, be reprocessed into graininess, spherical, sheet, column, the shapes such as plate-like.Evenly drop in water by every mu of some grain in the paddy field of water conservation 4 ~ 5 centimetres during use.The conventional method that said preparation revolutionizes pesticidal preparations or spray or spreads.
Yet there are no the mixture preparation of halosulfuronmethyl and the third careless amine and the research of effervescent tablet aspect thereof.
Summary of the invention
The present invention is directed to prior art deficiency to provide a kind of synergy, wide spectrum, not easily produce the compounded preparation of pesticide of resistance, and complex preparation is processed into a kind of effervescent tablet, once use and killing weeds in rice field harm in agricultural production, overcome peasant under prior art condition weed killer herbicide to be mixed soil and spread fertilizer over the fields and shortcoming that is bothersome, effort, to save time and manually.
Object of the present invention: be to provide a kind of broad weed-killing spectrum, there is the Herbicidal composition of notable synergistic effect, and be processed into the effervescent tablet directly can thrown in field, a kind of agent for removing grass in paddy field method of difference and traditional type is provided.
Technical scheme of the present invention is as follows:
Effervescent table as agricultural chemical of the present invention by active ingredient and auxiliary agent formulated, one of active ingredient is halosulfuronmethyl (English name Halosulfuron methyl), chemical name: 3-(4,6-dimethoxypyridin-2-base)-1-(1-methyl-3-chloro-4-methoxy formoxyl pyrazoles-5-base) sulfonylureas, CAS:100784-20-1; Two of effective ingredient is the third careless amine (English name pretilachlor), chemical name: 2-chloro-2,6 '-diethyl N-(2-third oxygen ethyl) acetanils, CAS:51218-49-6.The ratio of total formula weight shared by halosulfuronmethyl is 0.5%-5%, and shared by the third careless amine, the ratio of total formula weight is 10%-25%.
Described auxiliary agent includes solid acid, carbon dioxide source, wetting dispersing agent, binding agent, glidant, desiccant and filler, according to total amount Weight computation, the percentage by weight of its raw material composition the best is: halosulfuronmethyl 0.5%-5%, third careless amine 10%-30%, solid acid 10%-30%, carbon dioxide source 10%-40%, wetting dispersing agent 1%-15%, glidant 0-5%, binding agent 0-20%, desiccant 0-10%, filler 0-60%.
Can adopt direct compressing dry granulation method or wet granulation again pressed disc method obtain target effervescent table as agricultural chemical, its external form can be spherical, column, plate-like, sheet etc.
In effervescent table as agricultural chemical of the present invention, solid acid can be one or several mixtures in maleic acid, citric acid, succinic acid, lactic acid, fumaric acid, tartaric acid, benzoic acid, adipic acid, oxalic acid, p-methyl benzenesulfonic acid, sulfamic acid, boric acid, amino acid, potassium dihydrogen phosphate, malonic acid, nicotinic acid, sorbic acid.
In effervescent tablet of the present invention, carbon dioxide source (effervesce source) can be: one or several mixtures of carbonate, subcarbonate or bicarbonate.
In effervescent tablet of the present invention, wetting dispersing agent can be: lauryl sodium sulfate, neopelex (calcium), nekal, polysorbate, fatty alcohol-polyoxyethylene ether, sodium alkyl sulfate, alkyl polyoxyethylene ether sulfonate, sodium lignin sulfonate, calcium lignosulfonate, nekal (Nekal BX), di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate (NNO), polycarboxylate sodium salt, alkylpolyoxyethylene phosphate or one or several mixtures of sulfuric ester.
In effervescent tablet of the present invention, glidant can be: dolomol (calcium), dodecanesulfonic acid magnesium, PEG, hydrogenated vegetable oil, corn starch, Sodium Benzoate, one or several mixtures of polysorbate.
In effervescent tablet of the present invention, binding agent can be one or more mixtures in lactose, methylcellulose, PVP(polyvinyl pyrrolidone), gelatin, gum Arabic, dextrin, polyvinyl alcohol, polyethylene glycol, sodium carboxymethylcellulose, xanthans, starch and derivative, dextrin, lactose.
In effervescent tablet of the present invention, desiccant can be: CaO, CaCl
2, B
2o
3, BaO, Al
2o
3, Na
2sO
4in one or more mixtures.
In effervescent tablet of the present invention, filler can be one or more mixtures in kaolin, diatomite, clay, Emathlite, mica, bentonite, attapulgite, froth breaking stone, calcium carbonate, white carbon, talcum powder.
In effervescent tablet of the present invention, according to need of production, can not need in formula to comprise glidant, binding agent or desiccant.
Of the present invention with the preparation method of halosulfuronmethyl and the third careless amine effervescent table as agricultural chemical that is active ingredient:
Can adopt direct compressing dry granulation method and wet granulation again pressed disc method be prepared.
Direct compressing dry granulation method is: with filler by the third careless amine absorption, and adopt airslide disintegrating mill to be crushed to 500-800 order after mixing with halosulfuronmethyl, finally add through mechanical crushing to 300-500 object solid acid, carbon dioxide source, wetting dispersing agent, binding agent, glidant, desiccant and filler, through tablet press machine film-making after mixing, lower than 120 DEG C of oven dry, detect, pack and get product;
Wet granulation again pressed disc method carries out according to the following steps:
(I) accurately take the third careless amine, halosulfuronmethyl, wetting dispersing agent, glidant, desiccant and filler by formula, mix, precomminution to 200 order, then adopt airslide disintegrating mill to be crushed to 500 order ~ 800 orders, obtain mixture A;
(II) solid acid, carbonate powder are broken to 300 ~ 500 orders, independent packaging is for subsequent use;
(III) the mixture A equivalent of preparation in (I) is divided into two parts; then solid acid, the carbon dioxide source pulverized in (II) is added respectively by formula; mix; add the binding agent quantitatively prepared in advance; insert in granulator and granulate; then be dried to moisture at 40 DEG C ~ 50 DEG C and be less than 2%, after the whole grain of 20 mesh sieve, obtained acid softwood particle and alkali grain softwood respectively.
(IV) respectively by (III)) in obtained two kinds of softwoods, add after accurately measuring in proportion in mixer and stir compressing tablet after 15 ~ 20 minutes, be pressed into the effervescent tablet of regulatory specifications, lower than 120 DEG C of oven dry, detect, pack and get product.
The feature of effervescent table as agricultural chemical of the present invention is: efficient, wide spectrum, easy to use, accurate measurement, and a drug just effectively can prevent and kill off paddy field weed, to rice seedlings high safety, low toxicity is good with environment blending.
Effervescent table as agricultural chemical of the present invention is applied in rice seedling throwing field and transplant field effectively can prevent and treat the weeds such as multiple broad-leaved, grass family and sedge family to the harm of paddy rice.
The present invention has following remarkable result:
After the mixture preparation of halosulfuronmethyl and the third careless amine is processed into effervescent tablet, there is lot of advantages, as: during (1) dispenser, effervescent tablet directly can be thrown and execute in rice field by user, does not need with special medical instruments, decreases metering and to make up a prescription formality; (2) save time, improve work efficiency.Every mu of paddy rice only needs a few minutes spraying time, compared with conventional pesticide, substantially increases work efficiency.(3) decrease agricultural chemicals at the dust produced and in use, reduce the injury of medicament to human body.Product of the present invention have easy to use, save time, improve the advantage of the aspect such as work efficiency, met the present formulations of pesticide towards efficient, safety, low toxicity, development trend easy to use.
Compose significantly make up single herbicide herbicide after halosulfuronmethyl and the third careless amine mixture to narrow shortcoming, both can play remarkable synergistic effect according to after certain ratio mixture in addition, and this has positive role to raising herbicide effects, reduction field using dosage.Halosulfuronmethyl is effective to broad leaved weed and sedge weed, but poor to the grassy weed such as barnyard grass, moleplant seed effect.Third careless amine has the weed killer herbicide of greater activity to grassy weed, it is very effective to grassy weeds such as non-irrigated barnyard grass, rice barnyard grass, moleplant seed, lady's-grass, green foxtail, Paspalum distichum, eleusine indica, bent grass, one of the most effective medicament preventing and treating paddy fields in south china barnyard grass, moleplant seed at present, but to broad leaved weed and sedge weed preventive effect extreme difference.Therefore, halosulfuronmethyl is become preparation with the third careless amine mixture, not only can reduce production cost, expand herbicidal spectrum, improve preventive effect, and the safety coefficient to paddy rice can be improved, reduce poisoning odds.
Embodiment:
Embodiment each component proportioning is all weight percentage below.
Example 1
20% halosulfuronmethyl third careless amine effervescent tablet: former medicine and auxiliary agent select and proportioning as follows: halosulfuronmethyl 2%, third careless amine 18%, citric acid 9%, sodium bicarbonate 12%, di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate 3%, sodium lignin sulfonate 4%, lactose 13%, talcum powder 8%, filler white carbon complements to 100%.
To prepare 100 kilograms sample, calculate each amounts of components respectively by above proportioning, weigh.Standby by direct compressing dry granulation legal system, method is as follows:
First accurately take white carbon 30.15 kilograms, adsorb 18.75 kilograms of the 96% the third careless amine with white carbon, then take 2.1 kilogram of 95% halosulfuronmethyl, 9 kilograms of citric acids, 12 kilograms of sodium bicarbonates, 3 kilograms of di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonates, 4 kilograms of sodium lignin sulfonates, 13 kg of lactose, 8 kilograms of talcum powder, then 500-800 order is crushed to through airslide disintegrating mill after being mixed by all materials, through tabletting machine slabbing after mixing, lower than 100 DEG C of oven dry, heavily about 1 gram/piece, pack after the assay was approved.
Use 100 gram of 20% careless amine effervescent tablet of halosulfuronmethyl third for every mu, effectively can prevent and kill off the multiple broad-leaved of seedling throwing field, sedge family and grassy weed, total fresh weight preventive effect is greater than 98.2%.
Example 2
10% halosulfuronmethyl third careless amine effervescent tablet: former medicine and auxiliary agent select and proportioning as follows: halosulfuronmethyl 1%, third careless amine 9%, citric acid 9%, sodium bicarbonate 12%, di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate 3%, sodium lignin sulfonate 4%, lactose 13%, talcum powder 8%, filler white carbon complements to 100%.
To prepare 100 kilograms sample, calculate each amounts of components respectively by above proportioning, weigh.By wet granulation compression produces again, method is as follows:
(I) first accurately take white carbon 40.575 kilograms, adsorb 9.375 kilograms of the 96% the third careless amine with white carbon, take 1.05 kilogram of 95% halosulfuronmethyl again, 3 kilograms of di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonates, 4 kilograms of sodium lignin sulfonates, 13 kg of lactose, 8 kilograms of talcum powder, adopt common grinder that mixture is crushed to 200 orders, then be crushed to 500 ~ 800 orders through airslide disintegrating mill, obtain mixture A.
(II) 9 kilograms of citric acid powder are broken to 300 ~ 500 orders, 12 kilograms of sodium bicarbonates are crushed to 300 ~ 500 orders, package spare respectively.
79 kilograms of mixture A equivalent of preparation in (I) are divided into two parts, 39.5 kilograms every part by (II I).The 9 kilograms of citric acids pulverized in (II) are added in a mixture; add 0.05% carboxymethylcellulose sodium solution after mixing, insert in granulator and granulate, be then dried to moisture at 40 DEG C ~ 50 DEG C and be less than 2%; after the whole grain of 20 mesh sieve, obtained acid softwood particle.The 12 kilograms of sodium bicarbonates pulverized in (II) are added in other a mixture; 0.04% carboxymethylcellulose sodium solution is added after mixing; insert in granulator and granulate; then be dried to moisture at 40 DEG C ~ 50 DEG C and be less than 2%; after the whole grain of 20 mesh sieve, obtained alkaline softwood particle.
(IV) respectively by (III)) in obtained acid softwood particle and alkaline softwood particle, mass ratio by 48.5: 51.5 adds in mixer and stirs compressing tablet after 15 ~ 20 minutes, be pressed into the effervescent tablet of regulatory specifications, lower than 120 DEG C of oven dry, detect, pack and get product.
Use 200 gram of 10% careless amine effervescent tablet of halosulfuronmethyl third for every mu, effectively can prevent and kill off the multiple broad-leaved of seedling throwing field, sedge family and grassy weed, total fresh weight preventive effect reaches 96.1%.
Example 3
25% halosulfuronmethyl third careless amine effervescent tablet: former medicine and auxiliary agent select and proportioning as follows: halosulfuronmethyl 2%, the third careless amine 23%, citric acid 9%, sodium bicarbonate 12%, di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate 3%, sodium lignin sulfonate 4%, lactose 10%, filler white carbon complements to 100%.
Calculate each amounts of components respectively by above proportioning, weigh.Standby by direct compressing dry granulation legal system, detailed process is with embodiment 1.
Use 80 gram of 25% careless amine effervescent tablet of halosulfuronmethyl third for every mu, effectively can prevent and kill off the multiple broad-leaved of seedling throwing field, sedge family and grassy weed, total fresh weight preventive effect reaches 96.8%.
Example 4
30% halosulfuronmethyl third careless amine effervescent tablet: former medicine and auxiliary agent select and proportioning as follows: halosulfuronmethyl 3%, the third careless amine 27%, citric acid 12%, sodium bicarbonate 15%, nekal 4%, sodium lignin sulfonate 5%, bentonite 5%, filler white carbon complements to 100%.
Calculate each amounts of components respectively by above proportioning, weigh.Standby by direct compressing dry granulation legal system, detailed process is with embodiment 1.
Use 67 gram of 30% careless amine effervescent tablet of halosulfuronmethyl third for every mu, effectively can prevent and kill off the multiple broad-leaved of seedling throwing field, sedge family and grassy weed, total fresh weight preventive effect reaches 92.5%.
Example 5
15% halosulfuronmethyl third careless amine effervescent tablet: former medicine and auxiliary agent select and proportioning as follows: halosulfuronmethyl 1%, the third careless amine 14%, citric acid 9%, sodium bicarbonate 12%, di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate 4%, lignosulfonates 5%, filler white carbon complements to 100%.
Calculate each amounts of components respectively by above proportioning, weigh.By wet granulation compression produces again, detailed process is with embodiment 2.
Use 150 gram of 15% careless amine effervescent tablet of halosulfuronmethyl third for every mu, effectively can prevent and kill off the multiple broad-leaved of seedling throwing field, sedge family and grassy weed, total fresh weight preventive effect reaches 96.8%.
Example 6
20% halosulfuronmethyl third careless amine effervescent tablet: former medicine and auxiliary agent select and proportioning as follows: halosulfuronmethyl 2%, third careless amine 18%, citric acid 9%, sodium bicarbonate 12%, di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate 5%, lignosulfonates 6%, lactose 13%, aluminium-magnesium silicate 5%, filler white carbon complements to 100%.
Calculate each amounts of components respectively by above proportioning, weigh.By wet granulation compression produces again, detailed process is with embodiment 2.
Use 100 gram of 20% careless amine effervescent tablet of halosulfuronmethyl third for every mu, effectively can prevent and kill off the multiple broad-leaved of seedling throwing field, sedge family and grassy weed, total fresh weight preventive effect reaches 91.1%.
Land for growing field crops effect
Test period: in April, 2010 ~ May
Test site: 4 groups, Li Jian village, Si Tang town, Xingning District, Nanning City
Trial crops: paddy rice, kind is Shanyougui 99
Test process: in rice transplanting dispenser after 6 days (April 18), application method: effervescent tablet Direct Uniform is thrown into Tanaka, contrast medicament is 20% bensulfuron-methyl. butachlor wetting powder (Lianyungang, Jiangsu Province Dong Jin Chemical Co., Ltd.), usage conveniently: spread fertilizer over the fields after wetting powder is mixed with dry fine sand.
Result of the test: 30 days investigation fresh weight preventive effects after medicine.Result shows: example 1 ~ 6 all effectively can prevent and treat weeds in paddy field, and its control efficiency is not less than commercially available prod 20% benzyl butachlor WP to the control efficiency of weeds in paddy field, each medicament to the control efficiency of weeds in table 2.
The different weed killer herbicide of table 2. is to the control efficiency of weeds in paddy field
Claims (6)
1. the preparation method for the effervescent tablet of rice seedling throwing field management of weeds, it is characterized in that: get weight content halosulfuronmethyl 2%, third careless amine 18%, citric acid 9%, sodium bicarbonate 12%, sodium methylene bis-naphthalene sulfonate 3%, sodium lignin sulfonate 4%, lactose 13%, talcum powder 8%, filler white carbon complements to 100%; First accurately take white carbon, with the careless amine of white carbon absorption 96% the third, take 95% halosulfuronmethyl, citric acid, sodium bicarbonate, sodium methylene bis-naphthalene sulfonate, sodium lignin sulfonate, lactose and talcum powder again, then 500-800 order is crushed to through airslide disintegrating mill after being mixed by all materials, through tabletting machine slabbing after mixing, lower than 100 DEG C of oven dry, every sheet 1 gram, is packaged to be product after the assay was approved.
2. the preparation method for the effervescent tablet of rice seedling throwing field management of weeds, it is characterized in that: get weight content halosulfuronmethyl 1%, third careless amine 9%, citric acid 9%, sodium bicarbonate 12%, sodium methylene bis-naphthalene sulfonate 3%, sodium lignin sulfonate 4%, lactose 13%, talcum powder 8%, filler white carbon complements to 100%;
(1) first accurately white carbon is taken, with the careless amine of white carbon absorption 96% the third, take 95% halosulfuronmethyl, sodium methylene bis-naphthalene sulfonate, sodium lignin sulfonate, lactose and talcum powder again, adopt common grinder that mixture is crushed to 200 orders, then be crushed to 500-800 order through airslide disintegrating mill, obtain mixture A;
(2) citric acid powder is broken to 300-500 order, sodium bicarbonate is crushed to 300-500 order, packages spare respectively;
(3) the mixture A equivalent of preparation in (1) is divided into two parts, the citric acid pulverized in (2) is added in a mixture, 0.05% carboxymethylcellulose sodium solution is added after mixing, insert in granulator and granulate, then be dried to moisture at 40 DEG C-50 DEG C and be less than 2%, after the whole grain of 20 mesh sieve, obtained acid softwood particle; The sodium bicarbonate pulverized in (2) is added in other a mixture, add 0.04% carboxymethylcellulose sodium solution after mixing, insert in granulator and granulate, be then dried to moisture at 40 DEG C-50 DEG C and be less than 2%, after the whole grain of 20 mesh sieve, obtained alkaline softwood particle;
(4) respectively by acid softwood particle obtained in (3) and alkaline softwood particle, mass ratio by 48.5: 51.5 adds in mixer and stirs compressing tablet after 15-20 minute, is pressed into the effervescent tablet of regulatory specifications, lower than 120 DEG C of oven dry, detect, pack and get product.
3. the preparation method for the effervescent tablet of rice seedling throwing field management of weeds, it is characterized in that: get weight content halosulfuronmethyl 2%, third careless amine 23%, citric acid 9%, sodium bicarbonate 12%, sodium methylene bis-naphthalene sulfonate 3%, sodium lignin sulfonate 4%, lactose 10%, filler white carbon complements to 100%;
First accurately take white carbon, with the careless amine of white carbon absorption 96% the third, take 95% halosulfuronmethyl, citric acid, sodium bicarbonate, sodium methylene bis-naphthalene sulfonate, sodium lignin sulfonate and lactose again, then 500-800 order is crushed to through airslide disintegrating mill after being mixed by all materials, through tabletting machine slabbing after mixing, lower than 100 DEG C of oven dry, every sheet 1 gram, is packaged to be product after the assay was approved.
4. the preparation method for the effervescent tablet of rice seedling throwing field management of weeds, it is characterized in that: get weight content halosulfuronmethyl 3%, third careless amine 27%, citric acid 12%, sodium bicarbonate 15%, nekal 4%, sodium lignin sulfonate 5%, bentonite 5%, filler white carbon complements to 100%;
First accurately take white carbon, with the careless amine of white carbon absorption 96% the third, take 95% halosulfuronmethyl, citric acid, sodium bicarbonate, nekal, sodium lignin sulfonate and bentonite again, then 500-800 order is crushed to through airslide disintegrating mill after being mixed by all materials, through tabletting machine slabbing after mixing, lower than 100 DEG C of oven dry, every sheet 1 gram, is packaged to be product after the assay was approved.
5. for a preparation method for the effervescent tablet of rice seedling throwing field management of weeds, it is characterized in that: get the careless amine 14% of weight content halosulfuronmethyl 1%, third, citric acid 9%, sodium bicarbonate 12%, sodium methylene bis-naphthalene sulfonate 4%, lignosulfonates 5%, filler white carbon complements to 100%;
(1) first accurately white carbon is taken, with the careless amine of white carbon absorption 96% the third, then take 95% halosulfuronmethyl, sodium methylene bis-naphthalene sulfonate and lignosulfonates, adopt common grinder that mixture is crushed to 200 orders, then be crushed to 500-800 order through airslide disintegrating mill, obtain mixture A;
(2) citric acid powder is broken to 300-500 order, sodium bicarbonate is crushed to 300-500 order, packages spare respectively;
(3) the mixture A equivalent of preparation in (1) is divided into two parts, the citric acid pulverized in (2) is added in a mixture, 0.05% carboxymethylcellulose sodium solution is added after mixing, insert in granulator and granulate, then be dried to moisture at 40 DEG C-50 DEG C and be less than 2%, after the whole grain of 20 mesh sieve, obtained acid softwood particle; The sodium bicarbonate pulverized in (2) is added in other a mixture, add 0.04% carboxymethylcellulose sodium solution after mixing, insert in granulator and granulate, be then dried to moisture at 40 DEG C-50 DEG C and be less than 2%, after the whole grain of 20 mesh sieve, obtained alkaline softwood particle;
(4) respectively by acid softwood particle obtained in (3) and alkaline softwood particle, mass ratio by 48.5: 51.5 adds in mixer and stirs compressing tablet after 15-20 minute, is pressed into the effervescent tablet of regulatory specifications, lower than 120 DEG C of oven dry, detect, pack and get product.
6. the preparation method for the effervescent tablet of rice seedling throwing field management of weeds, it is characterized in that: get weight content halosulfuronmethyl 2%, third careless amine 18%, citric acid 9%, sodium bicarbonate 12%, sodium methylene bis-naphthalene sulfonate 5%, lignosulfonates 6%, lactose 13%, aluminium-magnesium silicate 5%, filler white carbon complements to 100%;
(1) first accurately white carbon is taken, with the careless amine of white carbon absorption 96% the third, take 95% halosulfuronmethyl, sodium methylene bis-naphthalene sulfonate, lignosulfonates, lactose and aluminium-magnesium silicate again, adopt common grinder that mixture is crushed to 200 orders, then be crushed to 500-800 order through airslide disintegrating mill, obtain mixture A;
(2) citric acid powder is broken to 300-500 order, sodium bicarbonate is crushed to 300-500 order, packages spare respectively;
(3) the mixture A equivalent of preparation in (1) is divided into two parts, the citric acid pulverized in (2) is added in a mixture, 0.05% carboxymethylcellulose sodium solution is added after mixing, insert in granulator and granulate, then be dried to moisture at 40 DEG C-50 DEG C and be less than 2%, after the whole grain of 20 mesh sieve, obtained acid softwood particle; The sodium bicarbonate pulverized in (2) is added in other a mixture, add 0.04% carboxymethylcellulose sodium solution after mixing, insert in granulator and granulate, be then dried to moisture at 40 DEG C-50 DEG C and be less than 2%, after the whole grain of 20 mesh sieve, obtained alkaline softwood particle;
(4) respectively by acid softwood particle obtained in (3) and alkaline softwood particle, mass ratio by 48.5: 51.5 adds in mixer and stirs compressing tablet after 15-20 minute, is pressed into the effervescent tablet of regulatory specifications, lower than 120 DEG C of oven dry, detect, pack and get product.
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