CN1096778A - A kind of slowly-releasing super-multicomponent fertilizer - Google Patents
A kind of slowly-releasing super-multicomponent fertilizer Download PDFInfo
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- CN1096778A CN1096778A CN 93111874 CN93111874A CN1096778A CN 1096778 A CN1096778 A CN 1096778A CN 93111874 CN93111874 CN 93111874 CN 93111874 A CN93111874 A CN 93111874A CN 1096778 A CN1096778 A CN 1096778A
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
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Abstract
The present invention relates to a kind of slowly-releasing super-multicomponent fertilizer.It is characterized in that carrying out the classification adjustment, the speed that discharges nutrient is carried out stepped control discharge, make nutrient continuity, high efficiency, chronicity supply with the plant growth needs according to the required nutrient of each growth phase of Different Crop.The present invention can improve crop yield and reach the purpose that promotes the crop fast growing to reduce soil harm, and low price is the desirable fertilizer of the inexorable trend of a kind of representative fertilizer development from now on.
Description
The present invention relates to a kind of fertilizer, particularly relate to a kind of slowly-releasing super-multicomponent fertilizer.
Countries in the world are more about the patent report of film-coated and slow release fertilizer, tradition film-coated and slow release fertilizer major technique feature is that chemical fertilizer appearance soluble in water is coated and formation micropore shape film with lyophobic dust, reduce with soil in moisture content touch opportunity and make fertile part of slowly stripping, to increase the fertilizer efficiency validity period.United States Patent (USP) 4,081,264 described film-coated and slow release fertilizers are that fertilizer such as urea soluble in water are used earlier the molten sulfur coating, are coated with the pitch prill bag that contains hexane, sherwood oil again, coat with Wingdale at last.Method is similar therewith for the described slowly-releasing control mode of other patent about film-coated and slow release fertilizer.This traditional slow control mode, only be based on increasing the validity period that fertilizer efficiency discharges, can slow released fertilizer is discharged nutrient speed and nutrient forms and satisfy the different growth phases of crop the needs of nutrient are not then added attention, do not take technology to remedy measure to the harm of soil, product price exceeds non-slow-release fertilizer 30% far away.
The different growth phases of nutrient that the purpose of this invention is to provide a kind of release with crop nutrient demand rule one is shown improve fertilizer efficiency utilization ratio and crop yield, alleviate fertilizer to the harm of soil to improve agricultural product quality, low-cost slowly-releasing super-multicomponent fertilizer.
Technical scheme of the present invention is the allocation process that comprises the nutrient system, the allocation process of sustained release system and the collocation process of nutrient system and sustained release system.
The allocation process of nutrient system is: under the situation to plant growth feature and need nutrient rule basic understanding, each growth phase of levying crop needs nutrient amount and nutrient to form corresponding allotment separately, make it nutritive equilibrium, each important growth phase is provided with a corresponding nutrient source (to call the nutrient level in the following text), and the general proportions of crop whole growth required various nutrient elements of phase satisfies: N20 part, P2 part, K15 part, Ca8 part, Mg2 part, S1 part.Comprise nitrogenous source such as carbon ammonium, ammonium nitrate, ammonium sulfate, urea, saltpetre, ammonium chloride, phosphorus ammonium, ammonium hydroxide and compound thing thereof in the nutrient level setting up procedure; Phosphorus source such as general calcium, coarse whiting, monoammonium phosphate, diammonium phosphate, potassiumphosphate, fused(calcium magnesium)phosphate, phosphogypsum and compound thing thereof; Potash fertilizer and compound things thereof such as potassium source such as vitriolate of tartar, Repone K, saltpetre, potassiumphosphate, salt of wormwood; Microbial source such as peat, the organic green manure of plant, human and animal excreta and domestic refuse, brewing yeast vinegar residue, agricultural-food residue, brown coal; Corresponding moderate-element and trace element; Urine enzyme and denitrification enzyme inhibitors; Necessary high-efficiency low-toxicity broad spectrum pesticide, weedicide, plant growth hormones and biostimulation agent etc.In theory, the nutrient level is many more more near the crop actual needs according to the setting of plant growth rule; But the setting of nutrient level is many more, and the more costs that cause of control corresponding level rise more.The nutrient level is provided with by the important growth step hop count of crop, operated by rotary motion point selection 2-5.
The allocation process of sustained release system: fertile body is realized by set up reference mark (to call control level in the following text) separately at each important growth phase in the adjusting of each important growth phase nutrient releasing speed of crop.Control level mainly is made up of functional polymer, pore-creating agent and amendment.The polymer of functional polymer select tape hydrophilic radical, as PVAC polyvinylalcohol, Vinyl Acetate Copolymer PVAC, urea aldehyde UF, polyacrylic acid PAA and salt thereof, poly(lactic acid), starch conversion urea aldehyde, urethane, alkyd resin etc., main effect is a film forming; Pore-creating agent is selected material soluble in water, as urea, Repone K, monoammonium phosphate, diammonium phosphate vitriolate of tartar, saltpetre, ammonium chloride, monoammonium sulfate and two ammoniums, ammonium nitrate, potassium dihydrogen phosphate, dipotassium, tripotassium, monosodium phosphate, disodium, trisodium, SODIUMNITRATE etc., main effect is the adjustment release amount; Amendment is selected powdery substance, and as talcum powder, brown coal powder, gypsum, Wingdale, clay, kaolin, diatomite, zeolite powder, fused(calcium magnesium)phosphate, general calcium, coarse whiting, peat, peat soil, slag ashes etc., main effect is to assist film forming.According to the required nutrient release rate of each important growth phase of crop allotment control level component, can reach the fertilizer purpose that part release rate controls stage by stage of recuperating.Can only 1 control level be set for short crop in vegetative period (as dredging the dish class) in the initial release stage.Therefore, the control level set-point can be selected 1-5 according to the crop difference.
The collocation of nutrient system and sustained release system: will comprise the nutrient level in nitrogenous source, phosphorus source, potassium source, medicine source at least and corresponding comprise that at least functional polymer, pore-creating agent and the amendment of being with hydrophilic radical fertile part discharges a control level and alternately roll from inside to outside and cover granulating and reach nutrient level and fertile part and discharge that control level is orderly, multistage to be disposed at same fertile body by the process of crop growth reverse order.
The present invention takes branch nutrient level and corresponding control level to long each the important growth phase high efficiency of crop of growth, continuity, chronicity supply nutrient, fertilizer efficiency utilization ratio and crop yield have been improved, and adopt functional polymer to replace the conventional bag mould material, the slow-release fertilizer price is greatly descended, functional polymer can be water-soluble gradually and can not be rubbish in the soil accumulation, alleviated fertilizer to the harm of soil and have retaining maintenance part ability and favourable raising agricultural product quality.
Be that example is further illustrated the present invention with paddy rice special function polymer classification slowly-releasing super-multicomponent fertilizer below.
Preparation example one:
1. nutrient system
Carbon ammonium 85 grams
Sulphur ammonium 420 grams
Monoammonium phosphate 128 grams
Repone K 155 grams
U.S. phosphate fertilizer 125 grams of calcium
Seedling stage and tillering phase Calucium Silicate powder 22 gram
Nutrient level sulphur powder 10 grams
(quantity/kilogram) FeSO
410 grams
ZnSO
420 grams
MnSO
410 grams
NaNO
30.2 gram
Come 0.05 milliliter of good fortune spirit
New capable 0.03 gram
α-Nai Yisuan 0.02 gram
Carbon ammonium 100 grams
Sulphur ammonium 440 grams
Monoammonium phosphate 187 grams
Repone K 190 grams
Jointing stage and U.S. phosphate fertilizer 20 grams of fringe phase calcium morning
Nutrient level peat 20 grams
(quantity/kilogram) Calucium Silicate powder 20 grams
Sulphur powder 5 grams
FeSO
45 grams
ZnSO
410 grams
MnSO
45 grams
NaNO
30.2 gram
Come 0.05 milliliter of good fortune spirit
New capable 0.03 gram
Alum acid ammonium 0.01 restrains partially
Carbon ammonium 120 grams
Sulphur ammonium 235 grams
Monoammonium phosphate 305 grams
Filling stage and ripening stage Repone K 210 grams
Nutrient level Calucium Silicate powder 20 grams
(quantity/kilogram) peat 100 grams
FeSO
42 grams
ZnSO
45 grams
MnSO
42 grams
NaNO
30.2 gram
Borax 2 grams
2. the water-soluble type resol 10 of the hierarchy of control restrains
Urea aldehyde (Mn=2000-4000) 30 grams
Seedling stage and tillering phase 30 milliliters in water
Fertile part discharges 80 order urea, 30 grams
Control level talcum powder 80 grams
(quantity/kilogram fertilizer) calcium oxide 10 grams
Water-soluble type resol 10 grams
Urea aldehyde (Mn=2000-4000) 30 grams
Jointing stage and 30 milliliters in fringe phase water early
Fertile part discharges 80 order urea, 36 grams
Control level talcum powder 80 grams
(quantity/kilogram fertilizer) calcium oxide 10 grams
Water-soluble type resol 10 grams
Urea aldehyde (Mn=2000-4000) 30 grams
30 milliliters in filling stage and ripening stage water
Fertile part discharges 80 order urea, 41 grams
Control level talcum powder 80 grams
(quantity/kilogram) calcium oxide 10 grams
Green grog 20 grams
3. the collocation of nutrient system and sustained release system:
420 gram filling stages and ripening stage nutrient levels under the condition of spray 0.2-1% water, are rolled onto little round shaped grain in rotary drum granulator.Discharge the complex function polymer aqueous solution and the urea of control level,, sparkling and crystal-clear marshy land is arranged keeping pH value to equal under 1 the condition to submit for adding filling stage and ripening stage nutrient up to roundlet grain surface with calcium oxide alkalization, talcum powder conditioning toward little round shaped grain.Then roundlet grain appearance by with above-mentioned similar operations with 870 gram jointing stages and boot stage the nutrient level and corresponding fertile part discharge a control level roll one by one cover after, again 420 gram seedling stages and division tiller phase nutrient level and fertile part are discharged control level and roll one by one and cover and make the green little round shaped grain of the about 3.5mm-4.5mm of diameter.
Preparation example two: process repeats system from example one, with the carbon ammonium, obtain the fertile body that performance and effect are equal to preparation example one.
Preparation example three: process repeats preparation example one, replaces monoammonium phosphate with general calcium, coarse whiting, phosphogypsum, fused(calcium magnesium)phosphate, potassiumphosphate, diammonium phosphate, obtains the fertile body that performance and effect are equal to preparation example one.
Preparation example four: process repeats preparation example one, replaces Repone K, the fertile body that performance that gets and effect are similar to preparation example one with saltpetre, potassiumphosphate, vitriolate of tartar and other no chlorine sylvite.
Preparation example five: process repeats preparation example one, holds ight soil and domestic refuse, agricultural-food residue, Brewing industry residue, ammonification brown coal, peat soil replacement peat with the organic green manure of plant, people, obtains the fertile body that performance and effect are similar to preparation example one.
Preparation example six: process repeats preparation example one, replace the complex function polymer with poly(lactic acid), starch conversion urea aldehyde, polyvinyl acetate (PVA), polyvinyl alcohol, urethane, polyacrylic acid and salt thereof, Synolac, urea aldehyde, phenolic aldehyde etc., obtain the fertile body that performance and effect are similar to preparation example one.
Preparation example seven: process repeats preparation example one, with formaldehyde, acetaldehyde, propionic aldehyde, replaces water to make function polymer thinner, obtains the fertile body that performance and effect are similar to preparation example one.
Preparation example eight: replace urea to make pore-creating agent with Repone K, vitriolate of tartar, saltpetre, ammonium chloride, monoammonium sulfate and two ammoniums, monoammonium phosphate and two ammoniums, ammonium nitrate, potassium dihydrogen phosphate, dipotassium and tripotassium, monosodium phosphate, disodium and trisodium, SODIUMNITRATE, carbon ammonium, obtain the fertile body that performance and effect are similar to preparation example one.
Preparation example nine: replace talcum powder with the plaster of Paris, plaster stone, clay, kaolin, diatomite, zeolite powder, fused(calcium magnesium)phosphate, general calcium, coarse whiting, peat, peat end, lignite ash, slag ashes, lime etc., obtain the fertile body that performance and effect are similar to preparation example one.
Use paddy rice special function polymer classification slowly-releasing super-multicomponent fertilizer, tested the present invention each growth phase of paddy rice is supported characteristic, also tested effect simultaneously production-increasing function and the reduction soil harm of paddy rice.And the multiple fertile and domestic non-slowly-releasing NPK compound fertilizer of the sulfur coating slowly-releasing of pressing Mitsui east fertilizer Co., Ltd. to produce is made Comparative Examples.Test example one: multiple fertilizer 3.8754 grams of the sulfur coating slowly-releasing that functional polymer classification slowly-releasing super-multicomponent fertilizer 3.8517 restrains, Mitsui east presses fertilizer Co., Ltd. to produce and fertile 3.2317 grams of domestic non-slowly-releasing NPK compound of getting preparation example one preparation are put into the sintered filter funnel middle part sustained height that three diameters are 5cm, long 20cm and bring water regulating valve into respectively, and with 40 order grains of sand filling remaining space.Regulating water intaking valve under 25 ℃ of conditions makes three sintered filter funnels all per hour there to be the 3ml leacheate to drench from funnel.Collect this section period pouring liquid outlet quantity in per 7 days and measure accumulative total nutrient amount (N+P
2O
5+ K
2O), obtaining this section period drenches percentage ratio that the accumulative total nutrient amount that accounts for total nutrient amount as this average nutrient release rate of 7 days.The measuring principle of N: be nitre attitude N and ammonium attitude N with organic N decomposition and inversion earlier, again nitre attitude N be reduced to ammonium attitude N; After the ammonium attitude N alkalization, with NH
3Form distills, and absorbs the standard acidometric titration with boric acid.P
2O
5Measuring principle: phosphorus exists with orthophosphoric acid salt in water, and orthophosphoric acid salt is that the 660nm place has strong absorbancy at wavelength under molybdenum antimony xitix developer, and available spectrophotometer or photoelectric colorimeter are measured its content.K
2The measuring principle of O: at formaldehyde-EDTA is in the slight alkalinity medium of sequestering agent, uses sodium tetraphenylborate precipitation K
+The back is that the 420nm place has stronger absorbancy at wavelength, can adopt its content of spectrophotometric determination.Found that: functional polymer classification slowly-releasing super-multicomponent fertilizer produced three nutrients and discharges peaks at the 14th day-28 days, the 77th day-105 days, the 119th day-140 days, account for respectively total nutrient amount 8%(seedling stage and tillering phase the nutrient amount 32%), the 11%(jointing stage and boot stage the nutrient amount 22%) and 10%(filling stage and ripening stage nutrient amount 40%); The eastern multiple fertilizer of sulfur coating slowly-releasing of pressing the production of fertilizer Co., Ltd. of Mitsui just remained to 175 days with the average release rate that accounts for total nutrient amount 4% after one of appearance in the 42nd day-56 days accounts for the release peak of total nutrient amount 30% always, peak release do not occurring; Non-slowly-releasing NPK compound fertilizer just all discharges when measuring in first week.This result shows: functional polymer classification slowly-releasing super-multicomponent fertilizer can continue in time and the peak occurs and support constantly, and its nutrient burst size comparison operators Heshui rice need be supported rule; The sulfur coating slowly-releasing is multiple fertile, and just release rate is excessive, and after this release rate is little and the velocity variations amplitude is very little, is not to meet very much paddy rice needs nutrient rule; Non-slowly-releasing NPK compound thing discharges entirely once contact water, does not have obvious time duration.
Test example two:
1. sample is formed: use excellent No. 2 hybrid rice in south to make trial crops, plant in 0.024 square metre basin every district 5 basins, every basin 6 strains.A executes in the district functional polymer classification slowly-releasing super-multicomponent fertilizer, and every basin consumption is 26 grams, and fertilization depth is 12cm.It is multiple fertile that B executes in the district sulfur coating of pressing fertilizer Co., Ltd. to produce in Mitsui east, and every basin consumption is 26 grams, and fertilization depth is 12cm.It is multiple fertile that C executes in the district domestic non-slowly-releasing NPK, and every basin consumption is 26 grams, and fertilization depth is 12cm.All samples are all taked paddy rice to have suffered vegetative period disposable fertilizer base to execute, pour water to the soil bed above 3.5cm in surface.Carry out rice transplanting then.Paddy rice is undertaken by paddy rice standard cultivating method in the experiment.
2. rice transplanting and management: rice transplanting carried out mid-April.Sample after the transplanting places no any cover outdoor to let alone growth, no longer topdresses, weeding, controls worm, management work such as the increase and decrease water yield etc., up to results.
3. the investigation of rice yield: the output investigation work results of paddy rice are being carried out simultaneously by the end of August.Spike number, grain number, thousand seed weight and paddy and straw ratio to paddy rice in every district are investigated, and obtain its mean value, and relative stimulation ratio has been made statistics, and the result is summarized in following table:
Sulfur coating slow-release fertilizer (SCF) that functional polymer classification slowly-releasing super-multicomponent fertilizer (FCDF) Mitsui east pressure fertilizer Co., Ltd. produces and domestic non-slowly-releasing NPK multiple fertile (NCF) are to increasing production of rice situation contrast table
As can be known from the above table, functional polymer classification slowly-releasing super-multicomponent fertilizer is very obvious to the production-increasing function of paddy rice, is better than the sulfur coating slow-release fertilizer that Mitsui east presses fertilizer Co., Ltd. to produce, and it is multiple fertile more to be better than domestic non-slowly-releasing NPK.Functional polymer classification slowly-releasing super-multicomponent fertilizer is the needs that fertile body is formed by each growth phase nutrient of paddy rice are carried out reasonable classification allotment, nutrient feed rate through stepped control reasonably to the volume increase essence of paddy rice, makes the nutrient utilization ratio high and to be converted into ratio defective product also high.Mitsui east presses fertilizer Co., Ltd. to produce the multiple fertilizer of sulfur coating slowly-releasing also effect of increasing production preferably, but it is slower that it discharges nutrient speed, and nitrogen content was too high during nutrient was formed, potassium content is on the low side and make paddy rice too delicate, simultaneously, it is lower that nutrient is converted into ratio defective product, and paddy and careless ratio are little.The multiple fertilizer of domestic non-slowly-releasing NPK still is not suitable for as paddy rice single fertilization usefulness, and especially in the high area of rainfall amount, fertilizer is instant and run off with rainwater, causes paddy rice late growing stage process nutrient under-supply, yields poorly down.
4. soil harm investigation: after the rice harves, the fertile body residual condition of each basin of A district, B district and C district is opened soil inspection.Each basin of A district does not all have obvious fertile body case remains and stays; Each basin of B district all stays crisp and hard sulphur shell remains, gets this shell and surveys its dry weight and account for 19.2% of fertile body gross weight; Each basin of C district does not have obvious fertile body remains and stays.Further cut open the basin inspection, find that A district basin soil nearly all has a light green thin layer to be positioned at apart from the soil layer of soil table 20cm～27cm, B district, C district do not have this phenomenon.Magnifying glass observe to be found: be dissolved with the thin layer that the liquid soil of phthalocyanine formed by soil particle and be barred from the thin layer upside, the thin layer downside finds no light green liquid soil.The reason that this phenomenon produces is: functional polymer classification slowly-releasing super-multicomponent fertilizer is manured into soil, and high molecular polymer and pigment are water-soluble gradually.The two is in the deep subsoil process of osmosis, owing to soil moisture because of absorbed by crop, evaporation and the high molecular polymer that is dissolved in water when reducing to a certain degree of running off separate out the soil particle that bonds and form laminate structure, the light green liquid soil that infiltration comes this structure stops after makes its unlikely continuation, and more percdation is lost to soil.Liquid soil is made up of moisture content and nutrient,, thereby this laminate structure has the moisture of stopping and nutrient is permeated the ability of scattering and disappearing, and is one of factor that improves rice yield and fertile part trans-utilization rate.
Claims (12)
1, a kind of slowly-releasing super-multicomponent fertilizer, it is characterized in that taking to comprise at least that the nutrient system in nitrogenous source, phosphorus source, potassium source, medicine source is by the corresponding allotment of plant growth stage nutrient demand status, at least fertile part of sustained release system comprising functional polymer, pore-creating agent and the amendment of being with hydrophilic radical by the corresponding allotment of each growth phase nutrient demand situation of crop, and discharged control level configuration and making in order with each the nutrient level of some amount and some amount corresponding fertile part.
2, slowly-releasing super-multicomponent fertilizer according to claim 1, it is characterized in that the nutrient system also comprises microbial source, this microbial source is a kind of in the organic green manure of plant, human and animal excreta and domestic refuse, agricultural-food residue, Brewing industry residue, brown coal, the peat at least.
3, slowly-releasing super-multicomponent fertilizer according to claim 1 and 2 is characterized in that described " in order configuration " is by the process of crop growth reverse order each nutrient level and corresponding fertile part to be discharged a control level and alternately roll from inside to outside and cover granulating and reach nutrient level and fertile part and discharge that control level is orderly, multistage to be disposed at same fertile body.
4, slowly-releasing super-multicomponent fertilizer according to claim 1 and 2 is characterized in that described nitrogenous source comprises a kind of in carbon ammonium, urea, nitre ammonia, saltpetre, ammonium chloride, ammonium sulfate, ammonium phosphate, the ammonium oxychloride at least.
5, slowly-releasing super-multicomponent fertilizer according to claim 1 and 2 is characterized in that described phosphorus source comprises a kind of in general calcium, coarse whiting, phosphogypsum, fused(calcium magnesium)phosphate, potassiumphosphate, monoammonium phosphate and two ammoniums at least.
6, slowly-releasing super-multicomponent fertilizer according to claim 1 and 2 is characterized in that described potassium source comprises at least to draw together a kind of in saltpetre, potassiumphosphate, vitriolate of tartar, Repone K, the salt of wormwood.
7, slowly-releasing super-multicomponent fertilizer according to claim 1 and 2 is characterized in that described medicine source refers to high-efficiency low-toxicity broad spectrum pesticide, weedicide, urine enzyme and denitrification enzyme inhibitors, plant growth hormones, biostimulant, various trace elements and tinting pigment.
8, slowly-releasing super-multicomponent fertilizer according to claim 1 and 2 is characterized in that described band hydrophilic radical functional polymer comprises a kind of in poly(lactic acid), starch-modified urea-formaldehyde, polyvinyl alcohol, Vinyl Acetate Copolymer, polyacrylic acid and sodium thereof or sylvite or ammonium salt, urethane, Synolac, urea aldehyde, phenolic aldehyde, the wooden sodium sulfonate at least.
9, slowly-releasing super-multicomponent fertilizer according to claim 1 and 2 is characterized in that described pore-creating agent comprises a kind of in Repone K, sulfuric acid one potassium and potassium, saltpetre, ammonium chloride, monoammonium sulfate and two ammoniums, monoammonium phosphate and two ammoniums, ammonium nitrate, potassium dihydrogen phosphate, dipotassium and tripotassium, monosodium phosphate, disodium and trisodium, carbon ammonium, the urea at least.
10, slowly-releasing super-multicomponent fertilizer according to claim 1 and 2 is characterized in that described amendment comprises a kind of in the plaster of Paris, plaster stone, clay, kaolin, diatomite, zeolite powder, fused(calcium magnesium)phosphate, general calcium, coarse whiting, peat, peat end, brown coal, slag ashes, lime, talcum powder, Calucium Silicate powder, the peat composed of rotten mosses at least.
11, slowly-releasing super-multicomponent fertilizer according to claim 1 and 2 is characterized in that the nutrient level of described some amount refers to 2-5 nutrient level.
12, slowly-releasing super-multicomponent fertilizer according to claim 1 and 2 is characterized in that described a certain amount of fertile part of release control level refers to that 1-5 fertile part discharges control level.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 93111874 CN1096778A (en) | 1993-06-23 | 1993-06-23 | A kind of slowly-releasing super-multicomponent fertilizer |
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| CN 93111874 CN1096778A (en) | 1993-06-23 | 1993-06-23 | A kind of slowly-releasing super-multicomponent fertilizer |
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| CN1096778A true CN1096778A (en) | 1994-12-28 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100419025C (en) * | 2006-10-11 | 2008-09-17 | 武汉理工大学 | Water retaining fertilizer retaining multifunction polymer composite material and its preparation method |
| CN101298401B (en) * | 2007-04-30 | 2011-04-20 | 中国科学院沈阳应用生态研究所 | Ground mass controlled release fertilizer |
| CN102126890A (en) * | 2011-01-21 | 2011-07-20 | 沈阳农业大学 | Environmentally friendly fertilizer envelope material and preparation method thereof |
| CN102515911A (en) * | 2011-11-21 | 2012-06-27 | 安徽欧杰利生态肥业有限公司 | High-nitrogen composite fertilizer and preparation method thereof |
| CN103011986A (en) * | 2013-01-11 | 2013-04-03 | 杨万善 | Compound calcium magnesium phosphate fertilizer |
| CN103288531A (en) * | 2013-05-17 | 2013-09-11 | 安徽三星化工有限责任公司 | Slow-release fertilizer specially used for briquette slag soybean |
| CN105165311A (en) * | 2015-07-20 | 2015-12-23 | 四川省中药材有限责任公司 | Cultivation method for improving content of volatile oil of ligusticum wallichii |
| CN105452196A (en) * | 2013-06-21 | 2016-03-30 | 艾勒蒙戴吉斯特有限公司 | Organic waste processing |
| CN106348877A (en) * | 2016-08-29 | 2017-01-25 | 贵阳开磷化肥有限公司 | Controlled release fertilizer for Chinese cabbage and preparing method thereof |
| CN106348876A (en) * | 2016-08-29 | 2017-01-25 | 贵阳开磷化肥有限公司 | Controlled release fertilizer for cucumber and preparing method thereof |
| CN106380338A (en) * | 2016-08-29 | 2017-02-08 | 贵阳开磷化肥有限公司 | Chitosan coated controlled-release fertilizer for rice and preparation method thereof |
| CN106748102A (en) * | 2016-12-15 | 2017-05-31 | 青阳县侬本肥料有限公司 | One cultivates peanut special complex fertilizer |
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1993
- 1993-06-23 CN CN 93111874 patent/CN1096778A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100419025C (en) * | 2006-10-11 | 2008-09-17 | 武汉理工大学 | Water retaining fertilizer retaining multifunction polymer composite material and its preparation method |
| CN101298401B (en) * | 2007-04-30 | 2011-04-20 | 中国科学院沈阳应用生态研究所 | Ground mass controlled release fertilizer |
| CN102126890A (en) * | 2011-01-21 | 2011-07-20 | 沈阳农业大学 | Environmentally friendly fertilizer envelope material and preparation method thereof |
| CN102126890B (en) * | 2011-01-21 | 2013-07-24 | 沈阳农业大学 | Preparation method of environmentally friendly fertilizer envelope material |
| CN102515911A (en) * | 2011-11-21 | 2012-06-27 | 安徽欧杰利生态肥业有限公司 | High-nitrogen composite fertilizer and preparation method thereof |
| CN103011986B (en) * | 2013-01-11 | 2014-10-15 | 杨万善 | Compound calcium magnesium phosphate fertilizer |
| CN103011986A (en) * | 2013-01-11 | 2013-04-03 | 杨万善 | Compound calcium magnesium phosphate fertilizer |
| CN103288531A (en) * | 2013-05-17 | 2013-09-11 | 安徽三星化工有限责任公司 | Slow-release fertilizer specially used for briquette slag soybean |
| CN103288531B (en) * | 2013-05-17 | 2015-05-06 | 安徽三星化工有限责任公司 | Slow-release fertilizer specially used for briquette slag soybean |
| CN105452196A (en) * | 2013-06-21 | 2016-03-30 | 艾勒蒙戴吉斯特有限公司 | Organic waste processing |
| CN105165311A (en) * | 2015-07-20 | 2015-12-23 | 四川省中药材有限责任公司 | Cultivation method for improving content of volatile oil of ligusticum wallichii |
| CN106348877A (en) * | 2016-08-29 | 2017-01-25 | 贵阳开磷化肥有限公司 | Controlled release fertilizer for Chinese cabbage and preparing method thereof |
| CN106348876A (en) * | 2016-08-29 | 2017-01-25 | 贵阳开磷化肥有限公司 | Controlled release fertilizer for cucumber and preparing method thereof |
| CN106380338A (en) * | 2016-08-29 | 2017-02-08 | 贵阳开磷化肥有限公司 | Chitosan coated controlled-release fertilizer for rice and preparation method thereof |
| CN106748102A (en) * | 2016-12-15 | 2017-05-31 | 青阳县侬本肥料有限公司 | One cultivates peanut special complex fertilizer |
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