CN103613447A - Polyelement slow release granular fertilizer with high fertilizer efficiency and preparation method thereof - Google Patents

Polyelement slow release granular fertilizer with high fertilizer efficiency and preparation method thereof Download PDF

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Publication number
CN103613447A
CN103613447A CN201310550275.8A CN201310550275A CN103613447A CN 103613447 A CN103613447 A CN 103613447A CN 201310550275 A CN201310550275 A CN 201310550275A CN 103613447 A CN103613447 A CN 103613447A
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parts
powder
sulfate
fertilizer
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CN103613447B (en
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吴志刚
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Suzhou Rencheng Bio-Science & Technology Co Ltd
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Suzhou Rencheng Bio-Science & Technology Co Ltd
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Abstract

The invention relates to a polyelement slow release granular fertilizer with high fertilizer efficiency and a preparation method thereof, belonging to the technical field of bio-fertilizers. The polyelement slow release granular fertilizer is characterized by being prepared from corn straw powder, fallen leaf powder, rooting agents, rice straw powder, distillers grains, urea, potato straw powder, ammonium sulfate, calcium magnesium phosphate, sweet potato powder, potassium chloride, zinc sulfate, ferrous sulfate, borax, peanut shell powder, copper sulfate, microbial strain agent and the like. The polyelement slow release granular fertilizer and the preparation method have the beneficial effects that the polyelement slow release granular fertilizer is prepared from various materials; the proportions between various nutrients are moderate; the polyelement slow release granular fertilizer can increase the growth speeds of crops, changes the ecological environments of plant rhizospheres, simultaneously is easily absorbed by plant root systems, has the functions of improving the soil to strengthen the roots, adjusting the soil acidity and alkalinity and decomposing the nutrients which are not easy to decompose and are fixed in the soil, and is an ideal fertilizer for producing green organic products; the main raw materials are wide in sources and low in prices; the production process is simple and is easy to popularize.

Description

A kind of polynary high fertilizer efficiency sustained-release granular fertilizer and preparation method thereof
technical field:
The present invention relates to a kind of polynary high fertilizer efficiency sustained-release granular fertilizer and preparation method thereof, belong to bio-feritlizer technical field.
background technology:
China has a large population, ploughs few, and along with successively decreasing year by year in the development arable land in population growth, industry and city.For this reason, unique feasible way of China's increase agricultural output is to increase the yield per unit area.Fertilizer is the grain of plant, and fertilising is in agricultural production process, to guarantee high crop yield, the requisite means of stable yields.The fertilizer using at present mainly contains single mineral manure, organic-inorganic compound fertilizer and compound manure.According to statistics, mineral manure to the contribution rate of grain greatly about 35% left and right, although in volume increase, having certain effect aspect increasing income, long-term application, can produce a lot of drawbacks, occur that Soil structure destroys, degradation bad phenomenon under organic content, causes its water conservation, fertilizer conservation, ventilation property poor, be difficult to meet the actual growth needs of farm crop, thereby make crop growth slow, disease and pest is serious, causes the underproduction; Organic-inorganic compound fertilizer lacks the beneficial microorganism that organic matter is fully decomposed, and causes fertilizer efficiency not obvious.Organic fertilizer normally adopts the way of stack retting to obtain to being rich in organic waste, but exist consuming time, take a lot of work, the drawback of pollution and nutrient loss, also caused the propagation of pathogenic bacteria simultaneously, farm crop, soil and environment are caused to certain disadvantageous effect.Simultaneously the fertilizer of domestic many kinds is very different, and what have has added a large amount of chemical fertilizer in fertilizer, and what have simply processes with livestocks faces, and the amount of application also having is few, can not be as main fertilising, and price is high.
summary of the invention:
The present invention seeks to, be used for making up the deficiencies in the prior art, and a kind of polynary high fertilizer efficiency sustained-release granular fertilizer and preparation method thereof is provided, reduced the pollution level of underground water source, protected land ecology environment, cost is low.
To achieve these goals, polynary high fertilizer efficiency sustained-release granular fertilizer of the present invention, is characterized in that: by corn stalk powder, fallen leaves powder, root-growing agent, pig manure, vinasse, urea, potato straw powder, ammonium sulfate, fused(calcium magnesium)phosphate, sweet potato powder, Repone K, zinc sulfate, ferrous sulfate, borax, peanut hull meal, copper sulfate, nano controlled-release carrier, microbial strains agent;
Described corn stalk powder is 60~80 parts;
Described fallen leaves powder is 70~90 parts;
Described root-growing agent is 10~20 parts;
Described pig manure is 30~50 parts;
Described vinasse are 10~20 parts;
Described urea is 5~10 parts;
Described potato straw powder is 50~60 parts;
Described ammonium sulfate is 1~3 part;
Described fused(calcium magnesium)phosphate is 20~30 parts;
Described sweet potato powder is 15~30 parts;
Described Repone K is 5~8 parts;
Described zinc sulfate is 4~8 parts;
Described ferrous sulfate is 2~5 parts;
Described borax is 1~3 part;
Described peanut hull meal is 20~30 parts;
Described copper sulfate is 2~4 parts;
Described nano controlled-release carrier 20-25 part;
Described microbial strains agent is 10~14 parts;
Described umber is parts by weight;
The preparation method of described nano controlled-release carrier is:
(1) silicon hydroxyapatite, Attapulgite, hydrotalcite, polynite, titanium dioxide, calcite, kaolin are mixed according to the mass fraction proportioning of 35-45:10-15: 10-15:8-10:8-10:7-8:5-7, join in the mixing solutions of 230 parts of methyl-sulphoxides (DMSO) and 50 parts of methyl alcohol, in 65 ℃, stir 60 hours, filter, and wash and remove excessive methyl-sulphoxide (DMSO) for 3 times with the hot ethanol of 60 ℃ of temperature, put into vacuum drying oven, 60 ℃ of temperature, be dried 24 hours, grinding is sieved, and obtains modified composite one time;
(2) 1 part of modified composite, 15 parts of Potassium ethanoates and 25 parts of distilled water are mixed, in temperature 50 C, stir more than 10 hours, in 30 ℃ of temperature, first under ultrasonic electric power 350W condition, disperse 3.5 hours, and then disperse 4 hours under ultrasonic electric power 250W condition.Filter, and wash 3 times with distillation, 80 ℃ of vacuum-drying 24 hours, grinding is sieved, and obtains twice-modified mixture; (3) above-mentioned 1 part of twice-modified mixture is disperseed to 60min at 600W power ultrasonic, with constant temperature heating device, be heated to 90 ℃, and stir (1200r/min) 60 minutes with mechanical stirrer; Obtain nano controlled-release carrier.
Described umber is parts by weight.
Preferred version is as follows:
One,
Described corn stalk powder is 70 parts;
Described fallen leaves powder is 80 parts;
Described root-growing agent is 14 parts;
Described pig manure is 40 parts;
Described vinasse are 15 parts;
Described urea is 8 parts;
Described potato straw powder is 55 parts;
Described ammonium sulfate is 2 parts;
Described fused(calcium magnesium)phosphate is 23 parts;
Described sweet potato powder is 20 parts;
Described Repone K is 7 parts;
Described zinc sulfate is 6 parts;
Described ferrous sulfate is 3 parts;
Described borax is 2 parts;
Described peanut hull meal is 25 parts;
Described copper sulfate is 2 parts;
20 parts, described nano controlled-release carrier;
Described microbial strains agent is 12 parts.
Two,
Described corn stalk powder is 80 parts;
Described fallen leaves powder is 85 parts;
Described root-growing agent is 17 parts;
Described pig manure is 40 parts;
Described vinasse are 15 parts;
Described urea is 6 parts;
Described potato straw powder is 55 parts;
Described ammonium sulfate is 3 parts;
Described fused(calcium magnesium)phosphate is 23 parts;
Described sweet potato powder is 26 parts;
Described Repone K is 7 parts;
Described zinc sulfate is 5 parts;
Described ferrous sulfate is 4 parts;
Described borax is 2 parts;
Described peanut hull meal is 30 parts;
Described copper sulfate is 3 parts;
25 parts, described nano controlled-release carrier;
Described microbial strains agent is 13 parts.
The preparation method of polynary high fertilizer efficiency sustained-release granular fertilizer of the present invention comprises following step:
(A) fallen leaves powder, root-growing agent, vinasse, urea, potato straw powder, ammonium sulfate, fused(calcium magnesium)phosphate, sweet potato powder, Repone K, zinc sulfate, ferrous sulfate, borax, peanut hull meal, copper sulfate, nano controlled-release carrier are required to send in stirring mixer to be uniformly mixed according to parts by weight, the stirring velocity of described stirring mixer is that per minute 45~55 turns;
(B) raw material after being uniformly mixed is crossed to 60 mesh sieves, then raw material is sent in fermentation vat and fermented, and drop into according to the microbial strains agent of parts by weight in fermentation vat, and in fermentation vat, add water, then add bio-fermentation agent, temperature in fermentation vat is controlled to 30~40 ℃ of bottom fermentations 5 days, finally the liquid after fermentation is filtered;
(C) filter residue step (B) being obtained with according to the corn stalk powder of parts by weight and pig manure, mix, obtain a mixing raw material, naturally dry, sealing is kept in Dark Place and 120~140 ℃ of high-temperature sterilization mixing raw materials 2 hours, finally sending moisture eliminator to is dried, obtain dried mixing raw material, the Temperature Setting of described moisture eliminator is 120~140 ℃, and be 10~15 minutes time of drying.
(D) dried mixing raw material is passed through to tablets press granulation.
Beneficial effect of the present invention is as follows:
The present invention selects multiple material formulated, ratio between various nutrition is moderate, realized the good combination of microorganism fertilizer, fertilizer, inorganic fertilizer three kinds of fertilizer, brought into play the group effect of 1+1+1>3, had the advantages that to reduce environmental pollution, changed the ecotope of plant rhizosphere, be easy to root system of plant simultaneously and absorb, there is the strong root of improving the soil, reconcile soil acidity or alkalinity, decomposing in soil and be difficult for decomposing the nutrient being fixed, is the desirable fertilizer of producing green organic products.Main raw material wide material sources, cheap, production technique is simply easy to promote.Hydroxyapatite also has biodegradable characteristic, and gained degraded product is various trace elements ion, and these elements can be absorbed again.Nano controlled-release additive has good biocompatibility, gastrointestinal tract mucous affinity, each component that makes it load has controlled-release function, through twice-modified nano-complex drug loading and adsorptive capacity, all improve a lot, fertilizer efficiency time lengthening is more than 3 months, effectively suppress the increment of animal pathogen, improve the producer's benefit.
embodiment:
For technique means, creation characteristic that the present invention is realized, reach object and effect is easy to understand, below further set forth the present invention.
Embodiment 1:
In the present embodiment, described corn stalk powder is 70 parts; Described fallen leaves powder is 80 parts; Described root-growing agent is 14 parts; Described pig manure is 40 parts; Described vinasse are 15 parts; Described urea is 8 parts; Described potato straw powder is 55 parts; Described ammonium sulfate is 2 parts; Described fused(calcium magnesium)phosphate is 23 parts; Described sweet potato powder is 20 parts; Described Repone K is 7 parts; Described zinc sulfate is 6 parts; Described ferrous sulfate is 3 parts; Described borax is 2 parts; Described peanut hull meal is 25 parts; Described copper sulfate is 2 parts; 20 parts, described nano controlled-release carrier;
Described microbial strains agent is 12 parts.
The preparation method of the polynary high fertilizer efficiency sustained-release granular fertilizer described in the present embodiment comprises following step:
(A) fallen leaves powder, root-growing agent, vinasse, urea, potato straw powder, ammonium sulfate, fused(calcium magnesium)phosphate, sweet potato powder, Repone K, zinc sulfate, ferrous sulfate, borax, peanut hull meal, copper sulfate, nano controlled-release carrier are required to send in stirring mixer to be uniformly mixed according to parts by weight, the stirring velocity of described stirring mixer is that per minute 50 turns;
(B) raw material after being uniformly mixed is crossed to 60 mesh sieves, then raw material is sent in fermentation vat and fermented, and drop into according to the microbial strains agent of parts by weight in fermentation vat, and in fermentation vat, add water, then add bio-fermentation agent, temperature in fermentation vat is controlled to 35 ℃ of bottom fermentations 5 days, finally the liquid after fermentation is filtered;
(C) filter residue step (B) being obtained with according to the corn stalk powder of parts by weight and pig manure, mix, obtain a mixing raw material, naturally dry, sealing is kept in Dark Place and 130 ℃ of high-temperature sterilization mixing raw materials 2 hours, finally sending moisture eliminator to is dried, obtain dried mixing raw material, the Temperature Setting of described moisture eliminator is 130 ℃, and be 13 minutes time of drying.
(D) dried mixing raw material is passed through to tablets press granulation.
The preparation method of described nano controlled-release carrier is:
(1) silicon hydroxyapatite, Attapulgite, hydrotalcite, polynite, titanium dioxide, calcite, kaolin are mixed according to the mass fraction proportioning of 35-45:10-15: 10-15:8-10:8-10:7-8:5-7, join in the mixing solutions of 230 parts of methyl-sulphoxides (DMSO) and 50 parts of methyl alcohol, in 65 ℃, stir 60 hours, filter, and wash and remove excessive methyl-sulphoxide (DMSO) for 3 times with the hot ethanol of 60 ℃ of temperature, put into vacuum drying oven, 60 ℃ of temperature, be dried 24 hours, grinding is sieved, and obtains modified composite one time;
(2) 1 part of modified composite, 15 parts of Potassium ethanoates and 25 parts of distilled water are mixed, in temperature 50 C, stir more than 10 hours, in 30 ℃ of temperature, first under ultrasonic electric power 350W condition, disperse 3.5 hours, and then disperse 4 hours under ultrasonic electric power 250W condition.Filter, and wash 3 times with distillation, 80 ℃ of vacuum-drying 24 hours, grinding is sieved, and obtains twice-modified mixture; (3) above-mentioned 1 part of twice-modified mixture is disperseed to 60min at 600W power ultrasonic, with constant temperature heating device, be heated to 90 ℃, and stir (1200r/min) 60 minutes with mechanical stirrer; Obtain nano controlled-release carrier.
Embodiment 2:
In this enforcement, described corn stalk powder is 80 parts; Described fallen leaves powder is 85 parts; Described root-growing agent is 17 parts; Described pig manure is 40 parts; Described vinasse are 15 parts; Described urea is 6 parts; Described potato straw powder is 55 parts; Described ammonium sulfate is 3 parts; Described fused(calcium magnesium)phosphate is 23 parts; Described sweet potato powder is 26 parts; Described Repone K is 7 parts; Described zinc sulfate is 5 parts; Described ferrous sulfate is 4 parts; Described borax is 2 parts; Described peanut hull meal is 30 parts; Described copper sulfate is 3 parts; 25 parts, described nano controlled-release carrier; Described microbial strains agent is 13 parts.
The preparation method of the polynary high fertilizer efficiency sustained-release granular fertilizer described in the present embodiment comprises following step:
(A) fallen leaves powder, root-growing agent, vinasse, urea, potato straw powder, ammonium sulfate, fused(calcium magnesium)phosphate, sweet potato powder, Repone K, zinc sulfate, ferrous sulfate, borax, peanut hull meal, copper sulfate, nano controlled-release carrier are required to send in stirring mixer to be uniformly mixed according to parts by weight, the stirring velocity of described stirring mixer is that per minute 50 turns;
(B) raw material after being uniformly mixed is crossed to 60 mesh sieves, then raw material is sent in fermentation vat and fermented, and drop into according to the microbial strains agent of parts by weight in fermentation vat, and in fermentation vat, add water, then add bio-fermentation agent, temperature in fermentation vat is controlled to 36 ℃ of bottom fermentations 5 days, finally the liquid after fermentation is filtered;
(C) filter residue step (B) being obtained with according to the corn stalk powder of parts by weight and pig manure, mix, obtain a mixing raw material, naturally dry, sealing is kept in Dark Place and 135 ℃ of high-temperature sterilization mixing raw materials 2 hours, finally sending moisture eliminator to is dried, obtain dried mixing raw material, the Temperature Setting of described moisture eliminator is 125 ℃, and be 15 minutes time of drying.
(D) dried mixing raw material is passed through to tablets press granulation.
The preparation method of described nano controlled-release carrier is:
(1) silicon hydroxyapatite, Attapulgite, hydrotalcite, polynite, titanium dioxide, calcite, kaolin are mixed according to the mass fraction proportioning of 35-45:10-15: 10-15:8-10:8-10:7-8:5-7, join in the mixing solutions of 230 parts of methyl-sulphoxides (DMSO) and 50 parts of methyl alcohol, in 65 ℃, stir 60 hours, filter, and wash and remove excessive methyl-sulphoxide (DMSO) for 3 times with the hot ethanol of 60 ℃ of temperature, put into vacuum drying oven, 60 ℃ of temperature, be dried 24 hours, grinding is sieved, and obtains modified composite one time;
(2) 1 part of modified composite, 15 parts of Potassium ethanoates and 25 parts of distilled water are mixed, in temperature 50 C, stir more than 10 hours, in 30 ℃ of temperature, first under ultrasonic electric power 350W condition, disperse 3.5 hours, and then disperse 4 hours under ultrasonic electric power 250W condition.Filter, and wash 3 times with distillation, 80 ℃ of vacuum-drying 24 hours, grinding is sieved, and obtains twice-modified mixture; (3) above-mentioned 1 part of twice-modified mixture is disperseed to 60min at 600W power ultrasonic, with constant temperature heating device, be heated to 90 ℃, and stir (1200r/min) 60 minutes with mechanical stirrer; Obtain nano controlled-release carrier.
Hydroxyapatite also has biodegradable characteristic, and gained degraded product is various trace elements ion, and these elements can be absorbed again.Nano controlled-release additive has good biocompatibility, gastrointestinal tract mucous affinity, each component that makes it load has controlled-release function, through twice-modified nano-complex drug loading and adsorptive capacity, all improve a lot, fertilizer efficiency time lengthening is more than 3 months, effectively suppress the increment of animal pathogen, improve the producer's benefit.
More than show and described ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and specification sheets, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.

Claims (4)

1. a polynary high fertilizer efficiency sustained-release granular fertilizer, is characterized in that: by corn stalk powder, fallen leaves powder, root-growing agent, pig manure, vinasse, urea, potato straw powder, ammonium sulfate, fused(calcium magnesium)phosphate, sweet potato powder, Repone K, zinc sulfate, ferrous sulfate, borax, peanut hull meal, copper sulfate, nano controlled-release carrier, microbial strains agent;
Described corn stalk powder is 60~80 parts;
Described fallen leaves powder is 70~90 parts;
Described root-growing agent is 10~20 parts;
Described pig manure is 30~50 parts;
Described vinasse are 10~20 parts;
Described urea is 5~10 parts;
Described potato straw powder is 50~60 parts;
Described ammonium sulfate is 1~3 part;
Described fused(calcium magnesium)phosphate is 20~30 parts;
Described sweet potato powder is 15~30 parts;
Described Repone K is 5~8 parts;
Described zinc sulfate is 4~8 parts;
Described ferrous sulfate is 2~5 parts;
Described borax is 1~3 part;
Described peanut hull meal is 20~30 parts;
Described copper sulfate is 2~4 parts;
Described nano controlled-release carrier 20-25 part;
Described microbial strains agent is 10~14 parts;
Described umber is parts by weight;
The preparation method of described nano controlled-release carrier is:
(1) silicon hydroxyapatite, Attapulgite, hydrotalcite, polynite, titanium dioxide, calcite, kaolin are mixed according to the mass fraction proportioning of 35-45:10-15: 10-15:8-10:8-10:7-8:5-7, join in the mixing solutions of 230 parts of methyl-sulphoxides (DMSO) and 50 parts of methyl alcohol, in 65 ℃, stir 60 hours, filter, and wash and remove excessive methyl-sulphoxide (DMSO) for 3 times with the hot ethanol of 60 ℃ of temperature, put into vacuum drying oven, 60 ℃ of temperature, be dried 24 hours, grinding is sieved, and obtains modified composite one time;
(2) 1 part of modified composite, 15 parts of Potassium ethanoates and 25 parts of distilled water are mixed, in temperature 50 C, stir more than 10 hours, in 30 ℃ of temperature, first under ultrasonic electric power 350W condition, disperse 3.5 hours, and then disperse 4 hours under ultrasonic electric power 250W condition, filter, and wash 3 times with distillation, 80 ℃ of vacuum-drying 24 hours, grinding is sieved, and obtains twice-modified mixture;
(3) above-mentioned 1 part of twice-modified mixture is disperseed to 60min at 600W power ultrasonic, with constant temperature heating device, be heated to 90 ℃, and stir (1200r/min) 60 minutes with mechanical stirrer; Obtain nano controlled-release carrier.
2. polynary high fertilizer efficiency sustained-release granular fertilizer according to claim 1, is characterized in that,
Described corn stalk powder is 70 parts;
Described fallen leaves powder is 80 parts;
Described root-growing agent is 14 parts;
Described pig manure is 40 parts;
Described vinasse are 15 parts;
Described urea is 8 parts;
Described potato straw powder is 55 parts;
Described ammonium sulfate is 2 parts;
Described fused(calcium magnesium)phosphate is 23 parts;
Described sweet potato powder is 20 parts;
Described Repone K is 7 parts;
Described zinc sulfate is 6 parts;
Described ferrous sulfate is 3 parts;
Described borax is 2 parts;
Described peanut hull meal is 25 parts;
Described copper sulfate is 2 parts;
20 parts, described nano controlled-release carrier;
Described microbial strains agent is 12 parts.
3. polynary high fertilizer efficiency sustained-release granular fertilizer according to claim 1, is characterized in that,
Described corn stalk powder is 80 parts;
Described fallen leaves powder is 85 parts;
Described root-growing agent is 17 parts;
Described pig manure is 40 parts;
Described vinasse are 15 parts;
Described urea is 6 parts;
Described potato straw powder is 55 parts;
Described ammonium sulfate is 3 parts;
Described fused(calcium magnesium)phosphate is 23 parts;
Described sweet potato powder is 26 parts;
Described Repone K is 7 parts;
Described zinc sulfate is 5 parts;
Described ferrous sulfate is 4 parts;
Described borax is 2 parts;
Described peanut hull meal is 30 parts;
Described copper sulfate is 3 parts;
25 parts, described nano controlled-release carrier;
Described microbial strains agent is 13 parts.
4. according to the preparation method of the polynary high fertilizer efficiency sustained-release granular fertilizer described in claim 2 or 3 any one, it is characterized in that, comprise following step:
(A) fallen leaves powder, root-growing agent, vinasse, urea, potato straw powder, ammonium sulfate, fused(calcium magnesium)phosphate, sweet potato powder, Repone K, zinc sulfate, ferrous sulfate, borax, peanut hull meal, copper sulfate, nano controlled-release carrier powder are required to send in stirring mixer to be uniformly mixed according to the parts by weight of claim 2, the stirring velocity of described stirring mixer is that per minute 45~55 turns;
(B) raw material after being uniformly mixed is crossed to 60 mesh sieves, then raw material is sent in fermentation vat and fermented, and drop into according to the microbial strains agent of the parts by weight of claim 2 in fermentation vat, and in fermentation vat, add water, then add bio-fermentation agent, temperature in fermentation vat is controlled to 30~40 ℃ of bottom fermentations 5 days, finally the liquid after fermentation is filtered;
(C) filter residue step (B) being obtained with according to the corn stalk powder of the parts by weight of claim 2 and pig manure, mix, obtain a mixing raw material, naturally dry, sealing is kept in Dark Place and 120~140 ℃ of high-temperature sterilization mixing raw materials 2 hours, finally sending moisture eliminator to is dried, obtain dried mixing raw material, the Temperature Setting of described moisture eliminator is 120~140 ℃, and be 10~15 minutes time of drying;
(D) dried mixing raw material is passed through to tablets press granulation.
CN201310550275.8A 2013-11-08 2013-11-08 A kind of Polyelement slow release granular fertilizer with high fertilizer efficiency and preparation method thereof Expired - Fee Related CN103613447B (en)

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CN104072254A (en) * 2014-05-23 2014-10-01 陈忠家 High-fertility sustained-release composite fertilizer special for sugarcane planting
CN105175129A (en) * 2015-09-09 2015-12-23 山东乡约生物工程科技有限公司 Nano microbial agent and preparation method thereof
CN106316565A (en) * 2015-12-31 2017-01-11 欧阳沁 Organic fertilizer based on attapulgite mineral substances and preparation method thereof
CN106431750A (en) * 2016-09-12 2017-02-22 巢湖春友种业科技有限公司 Hydroxyapatite-modified biochar fertilizer and preparation method thereof
CN106748139A (en) * 2016-12-22 2017-05-31 安徽爱能洁生物科技有限公司 A kind of nutrition composite organic-inorganic fertilizer in a balanced way
CN107266234A (en) * 2017-07-27 2017-10-20 望江县农旺农业专业合作社 It is a kind of can improved soil paddy rice-dedicated fertilizer
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