CN107652134A - A kind of sustained-controll-release fertiliser coating agent and preparation method thereof - Google Patents
A kind of sustained-controll-release fertiliser coating agent and preparation method thereof Download PDFInfo
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- CN107652134A CN107652134A CN201711035295.6A CN201711035295A CN107652134A CN 107652134 A CN107652134 A CN 107652134A CN 201711035295 A CN201711035295 A CN 201711035295A CN 107652134 A CN107652134 A CN 107652134A
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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
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/80—Soil conditioners
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C3/00—Fertilisers containing other salts of ammonia or ammonia itself, e.g. gas liquor
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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
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
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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
- C05G5/00—Fertilisers characterised by their form
- C05G5/30—Layered or coated, e.g. dust-preventing coatings
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L5/00—Compositions of polysaccharides or of their derivatives not provided for in groups C08L1/00 or C08L3/00
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/16—Applications used for films
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Soil Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Fertilizers (AREA)
Abstract
The present invention relates to agricultural biological technical field, in particular to a kind of sustained-controll-release fertiliser coating agent and preparation method thereof.The sustained-controll-release fertiliser coating agent, is mainly made by following raw material：In terms of parts by weight, pulullan polysaccharide 17-22 parts, poly-aspartic-acid 14-19 parts, lignin 12-17 parts, methylcellulose 7-12 parts, corn oil 11-14 parts, water 29-35 parts, sulfuric acid 0.5-0.8 parts.The sustained-controll-release fertiliser coating agent of the present invention, suitable for the film of all kinds of granulated fertilizers, nitrogen, potassium element of release fertilizer etc. are gradually decomposed, it is nontoxic to increase substantially utilization rate of fertilizer, non-secondary pollution, does not damage plant and soil environment；After being combined with fertilizer agricultural chemicals, Fei ﹑ medicines quality and basic performance are not influenceed；Also crop will not be damaged due to excessive concentration, base manure applied once can be made, simplify agricultural planting and tillage method, reduce cost, rural labor production efficiency gets a greater increase.
Description
Technical field
The present invention relates to agricultural biological technical field, in particular to a kind of sustained-controll-release fertiliser coating agent and its preparation
Method.
Background technology
In recent years, chemical fertilizer application return rate in China's is in the trend that is decreased obviously, and the rate of returns of chemical fertilizer is serious to successively decrease, also,
Direct economic loss is averaged per hectare up to 650 yuan caused by blindness excessive fertilization every year.Due to heavy dressing year after year, it is particularly
It is uneven that some negative effects also gradually display with unreasonable fertilising, as body eutrophication, soil hardening, vegetables and
Phenomena such as fruit taste bad, disease incident increase, energy serious waste.According to statistics, chemical fertilizer average utilization in China's only has
35%, compared with developed countries, chemical fertilizer utilization ratio wants low 20% or so.The low factor of chemical fertilizer utilization ratio is a lot, excessive except agriculturally
It is largely that fertilizer production technology falls behind outside the factors such as fertilising, balance fertilizing.China is low because of utilization rate of fertilizer every year, makes
Into about 30,000,000,000 yuan of waste direct economic loss, ten thousand tons of chemical fertilizer more than 2000, equal to 60,000,000 tons of standard coal.
The utilization rate of China farmland chemical nitrogen fertilizer only has 30% to 35%, and most of nitrogen enters greatly in a variety of manners
Gas and water environment, because nitrogenous fertilizer is excessively used, the part that is not absorbed by plants is caused by rainwash, elution and evaporation etc.
A series of environmental problems.Annual China of studies have shown that of Nanjing Soil Inst., Chinese Academy of Sciences has 123.5 ten thousand tons of nitrogen to pass through
Surface water footpath flows to rivers and lakes, and 49.4 ten thousand tons enter underground water, and 2,990,000 tons enter air.The Changjiang river, the Yellow River and the Zhujiang River are defeated every year
The dissolved inorganic nitrogen gone out reaches 97.5 ten thousand tons, wherein 90% comes from agricultural, and nitrogenous fertilizer account for 50%.Fertilizer loss enters in soil
Enter water source and be referred to as " agricultural non-point source pollution " in environmental pollution.
With a large amount of uses of chemical fertilizer, its utilization rate constantly reduces the fact that be generally well known.This explanation, only by a large amount of
Application fertilizer also has to improve crop yield be limited and pollutes a series of problems such as environment.Agronomic measures are to improving
The utilization rate of nitrogenous fertilizer has certain effect, but can't resolve root problem.
In view of this, it is special to propose the present invention.
The content of the invention
The first object of the present invention is to provide a kind of sustained-controll-release fertiliser coating agent, and described sustained-controll-release fertiliser coating agent is fitted
For the coating of all kinds of granulated fertilizers, can gradually be divided according to the nutrient uptake feature of crop by the granulated fertilizer of the coating agent coating
Solution, nitrogen, potassium element slowly discharge, meet the needs of crop whole breeding time is to nitrogen, reduce the leaching loss of nitrogen, wave
Loss caused by hair and denitrification, can reduce rate of fertilizer, reduce cost, increase peasant income, rural labor life
Production efficiency gets a greater increase.
The second object of the present invention is to provide a kind of preparation method of described sustained-controll-release fertiliser coating agent, this method letter
Single, easily operated, operating condition is gentle, and production cost is low, can largely produce and improve rural labor production efficiency.
In order to realize the above-mentioned purpose of the present invention, spy uses following technical scheme：
A kind of sustained-controll-release fertiliser coating agent, is mainly made by following raw material：In terms of parts by weight, pulullan polysaccharide 17-22
Part, poly-aspartic-acid 14-19 parts, lignin 12-17 parts, methylcellulose 7-12 parts, corn oil 11-14 parts, water
29-35 parts, sulfuric acid 0.5-0.8 parts.
The sustained-controll-release fertiliser coating agent of the present invention, suitable for the film of all kinds of granulated fertilizers, by the coating agent coating
Granulated fertilizer can gradually be decomposed according to the nutrient uptake feature of crop, nitrogen, potassium element slowly discharge, and meet that crop entirely gives birth to
Demand of the phase to nitrogen is educated, reduces the loss caused by leaching loss, volatilization and the denitrification of nitrogen, it is nontoxic, without secondary dirt
Dye, does not damage plant and soil environment；Integrate the gentle On The Drug Release Shui ﹑ Fei ﹑ medicines of absorption；Have concurrently soil moisture conservation of loosening the soil, venting and water permeable,
The various functions such as growth promotion；After being combined with fertilizer agricultural chemicals, Fei ﹑ medicines quality and basic performance are not influenceed；Also will not be due to concentration mistake
Height damages to crop, while can make base manure applied once, saves labour, and the later stage chases after in the case of solving dense planting
The difficulty of fertilizer, simplifies agricultural planting and tillage method, increases substantially utilization rate of fertilizer, horizontal in same origin equal production volume
On can economize on resources, reduce rate of fertilizer, reduce cost, increase peasant income, rural labor production efficiency obtains bigger
Improve.
Pulullan polysaccharide is a kind of similar as caused by fermenting Aureobasidium pullulans glucan, extracellular water solubility of xanthans
Cement polysaccharide, polysaccharide high resilience in structure, film forming, gas barrier property, plasticity, viscosity are relatively strong and soluble in water,
Nontoxic, colorless and odorless.Fruit glaze agent is used as in the present invention, forms continuous protective layer, can prevent microorganism from invading, and is suppressed
Moisture evaporation, absorb and adjust respiration, realize slow-releasing and controlled-releasing action.
Poly-aspartic-acid is a kind of water-soluble Biomimetic Polymers, can in the sustained-controll-release fertiliser coating agent of the present invention
Promote absorption of the plant to nutrient in fertilizer, improve fertile medicine utilization rate, reduce surface water and underground caused by fertile medical abortion is lost
Water pollution；Further, it is possible to effectively improve the yield and quality of crops.In addition, poly-aspartic-acid can also promote plant
The growth of root system, strengthen the resistance of plant.
Lignin is a kind of renewable, degradable and nontoxic material, is have three-D space structure complicated unformed
High polymer, for fertilizer in lignin, the presence of the stereo chemical structure of lignin has delayed the degradation process of lignin, so that
Fertilizer slowly discharges with the degraded of lignin, realizes slow controlled release.Due to many polar groups in structure be present, especially compared with
More hydroxyls, intramolecular and intermolecular hydrogen bonding are stronger.Contain many negative electricity groups in lignin, and there is polycyclic macromolecule knot
Structure, there is stronger affinity to the high volence metal ion in soil, thus lignin is added in the coating agent of the present invention, can inhale
Attached or Wrapped fertilizer, realize the sustained release of fertilizer.Also, lignin is natural polymer, nontoxic, can degrade, in soil
In humic acid can be generated by microbial degradation, can improve soil physico-chemical property, improve soil permeability prevent it is hardened.
After being mixed with sulfuric acid, a certain degree of cleavage reaction and condensation reaction can occur lignin for lignin, reaction
The phenolic hydroxyl group and carboxyl of middle generation have certain sequestering power, energy and Action of Metal Ions, generate a variety of chelates and complexing
Thing, realize slow controlled release.Also, the free ammonia contained in lignin becomes ammonium sulfate after sulfuric acid neutralizes and adsorbed by lignin, into
For a part for sustained-controll-release fertiliser, increase fertilizer efficiency.
Lignin has larger solid space molecular structure, and dissolubility and dispersiveness are relatively poor.Methylcellulose can
Sustained-controll-release fertiliser coating agent as dispersant and stabilizer, to make the present invention is uniformly dispersed and stably.
Corn oil can dissolve and emulsify coating organic substance, be that cost is low, and itself and other several components matchings, dissolving
It is optimal with emulsifying effectiveness.
Preferably, the sustained-controll-release fertiliser coating agent, is mainly made by following raw material：In terms of parts by weight, Propiram is more
Sugared 19-22 parts, poly-aspartic-acid 14-16 parts, lignin 14-17 parts, methylcellulose 7-8 parts, corn oil 11-12
Part, water 29-33 parts, sulfuric acid 0.5-0.6 parts.
Preferably, the sulfuric acid is the sulfuric acid that mass fraction is 98%.
Need to illustrate is, raw material proportioning of the invention is the more excellent use by substantial amounts of creative experiments optimization
Amount, delaying for the sustained-controll-release fertiliser coating agent prepared only just is can guarantee that under the premise of these raw materials and the raw material proportioning is added
Controlled-release effect is good, and coating agent slow controlled-release effect of the prior art is bad, and complicated component, cost are high, it is impossible to is applicable all kinds of fertilizer
Material.The present invention in order to improve its slow controlled-release effect and widely applicable property, the screening to raw material type has done substantial amounts of experiment, be with
Improve utilization rate of fertilizer, to strengthen slow release effect and reduce cost be starting point, strictly select each raw material, and by raw material it
Between the effect of complementing each other assign sustained-controll-release fertiliser coating agent stronger slow-releasing and controlled-releasing action.The dosage of each other raw material is relative
More with being also to have necessarily to investigate less, each suitable dosage of raw material is very important.By largely putting into practice, final practice
Going out optimal addition makes it more reasonable.
According to the best results of sustained-controll-release fertiliser coating agent made from each raw material of this proportioning addition, Fertilizer nutrient release
Time limit can extend 60-80 days, can reduce by every mu of ground fertilizer amount, and cost is low.
Preferably, the water is running water.The present invention coating agent preparation process use water may be selected from it is common originally
Water, preparation condition is gentle, reduces harsh degree.
Present invention also offers a kind of preparation method of sustained-controll-release fertiliser coating agent, comprise the following steps：
Lignin, corn oil, water and sulfuric acid are mixed, heated；Then methylcellulose, poly- lucid asparagus are added
Propylhomoserin, pulullan polysaccharide, refinement is cooled down after mixing, obtains sustained-controll-release fertiliser coating agent.
The preparation method of the sustained-controll-release fertiliser coating agent of the present invention, first lignin, corn oil, water and sulfuric acid are mixed and stirred
Mix, lignin is softened and degraded, generate with the product with sequestering power such as phenolic hydroxyl group and carboxyl；Also, lignin middle reaches
From ammonium and sulfuric acid neutralize after generate ammonium sulfate, adsorbed by lignin, inherently as a part for sustained-controll-release fertiliser, increase fertilizer
Effect.After lignin first is softened into degradation treatment, the dispersibility energy of lignin is improved, can also be mixed with other materials subsequently added
The uniform and stable property for uniformly, improving the coating agent being prepared is closed, so as to ensure slow controlled-release effect.
Preferably, lignin, corn oil, water and sulfuric acid are mixed, is heated to 112-124 DEG C and is reacted.
Lignin has three-dimensional space molecular structure, is heated to this temperature range, makes plus the lignin of water reaches
Glass transition temperature, the motion of lignin segment and strand, contribute to the softening and degraded of lignin.
Preferably, the method that the lignin, corn oil, water and sulfuric acid are mixed and heated includes：By corn
Oil, the water of 1/2-2/3 amounts, sulfuric acid are added in lignin, are heated to 112-124 DEG C, are stirred after lignin fully softens degraded,
The water cooling of surplus is added, continues to mix.It is furthermore preferred that successively according to corn oil, the water of 1/2-2/3 amounts, sulfuric acid
Order is added in lignin and mixed.
Preferably, the water for adding surplus is cooled between 45-56 DEG C.
Preferably, 112-124 DEG C is heated to, is stirred in 25-35rpm/min and fully softens degraded to lignin；Add surplus
After the water cooling of surplus, 20-25min is stirred in 22-31rpm/min rotating speeds.It is furthermore preferred that 112-124 DEG C is heated to, in
30rpm/min, which stirs, fully softens degraded to lignin；After adding the water cooling of surplus, 20- is stirred in 26rpm/min rotating speeds
25min。
Preferably, after adding methylcellulose, poly-aspartic-acid, pulullan polysaccharide, in 38-46 DEG C of mixing.More
Preferably, after adding methylcellulose, poly-aspartic-acid, pulullan polysaccharide, the speed of mixing is 18-25rpm/min,
The time of mixing is 40-52min.It is further preferred that add methylcellulose, poly-aspartic-acid, pulullan polysaccharide
Afterwards, the speed of mixing is 22rpm/min.
Preferably, the method for the cooling includes：By the material of mixing continue stirring make temperature be not higher than 30 DEG C after,
Stop stirring.
Preferably, the fineness of the refinement reaches 180 mesh.It is furthermore preferred that the fineness of the refinement is 180-220 mesh.Carefully
The fineness of change is controlled between aforementioned range, and the coating agent that can make to obtain is uniformly dispersed, to ensure after being coated on fertilizer surface,
The film thickness of formation is uniform.
Compared with prior art, beneficial effects of the present invention are：
(1) sustained-controll-release fertiliser coating agent of the invention is applied to the coating of all kinds of granulated fertilizers, by the coating agent bag
The granulated fertilizer of film can gradually decompose according to the nutrient uptake feature of crop, and nitrogen, potassium element slowly discharge, and meet that crop is whole
Breeding time to the demand of nitrogen, reduces the loss caused by leaching loss, volatilization and the denitrification of nitrogen；
(2) sustained-controll-release fertiliser coating agent of the invention is nontoxic, non-secondary pollution, does not damage plant and soil environment；Collection is inhaled
Receive gentle On The Drug Release Shui ﹑ Fei ﹑ medicines to be integrated, have the various functions such as soil moisture conservation, venting and water permeable, growth promotion that loosen the soil concurrently；
(3) after sustained-controll-release fertiliser coating agent of the invention is combined with fertilizer agricultural chemicals, Fei ﹑ medicines quality and basic nature are not influenceed
Energy；Also crop will not be damaged due to excessive concentration, while base manure applied once can be made, save labour, and solve
Determine the difficulty of manuring late in the case of dense planting, simplified agricultural planting and tillage method, increase substantially utilization rate of fertilizer,
It can be economized on resources in same origin equal production volume level, reduce rate of fertilizer, reduce cost, increase peasant income, agriculture labor
Dynamic production efficiency gets a greater increase；
(4) preparation method of sustained-controll-release fertiliser coating agent of the invention has that method is simple, easily operated, operating condition temperature
With.
Embodiment
Embodiment of the present invention is described in detail below in conjunction with embodiment, but those skilled in the art will
Understand, the following example is merely to illustrate the present invention, and is not construed as limiting the scope of the present invention.It is unreceipted specific in embodiment
Condition person, the condition suggested according to normal condition or manufacturer are carried out.Agents useful for same or the unreceipted production firm person of instrument, it is
The conventional products that can be obtained by commercially available purchase.
Embodiment 1
The raw material of the sustained-controll-release fertiliser coating agent of the present embodiment forms：
The preparation method of the sustained-controll-release fertiliser coating agent of the present embodiment is as follows：
1) lignin is weighed by above-mentioned dosage, added in the enamel reaction still that volume is 1.5 cubic metres；
2) corn oil is weighed by above-mentioned dosage, added in the reactor into step 1)；
3) running water is weighed by above-mentioned dosage, adds the running water of 1/2 amount into the reactor of step 2)；
4) sulfuric acid is weighed by above-mentioned dosage, added into the reactor of step 3)；
5) reactor of each raw material of above-mentioned addition is heated, it is 112 DEG C to make reactor interior reaction temperature, while auger
Oar mixes to each raw material, rotating speed 30rpm/min；
6) after lignin fully softens degraded, the running water of surplus is added, reactor temperature is reduced to 45 DEG C,
Continue to stir, propeller rotating speed is 26rpm/min, mixing time 25min, obtains mixed material；
7) methylcellulose of above-mentioned dosage, poly-aspartic-acid, general is sequentially added into the mixed material in step 6)
Shandong orchid polysaccharide, continues to stir, and the rotating speed of propeller is 22rpm/min, and mixing time 40min, temperature is 46 DEG C；
8) mixed material for obtaining step 7) is cooled down, and by the way of being stirred using side in a kettle and become cooling, is treated
Mixed material temperature stops stirring when being cooled to 30 DEG C or so；
9) material cooled down in step 8) is inputted in colloid mill by liquid pump and refined, reach its fineness
180-220 mesh；
10) quantitative package after inspection by sampling is qualified.
Embodiment 2
The raw material of the sustained-controll-release fertiliser coating agent of the present embodiment forms：
The preparation method of the sustained-controll-release fertiliser coating agent of the present embodiment is as follows：
1) lignin is weighed by above-mentioned dosage, added in the enamel reaction still that volume is 1.5 cubic metres；
2) corn oil is weighed by above-mentioned dosage, added in the reactor into step 1)；
3) running water is weighed by above-mentioned dosage, adds the running water of 1/2 amount into the reactor of step 2)；
4) sulfuric acid is weighed by above-mentioned dosage, added into the reactor of step 3)；
5) reactor of each raw material of above-mentioned addition is heated, it is 118 DEG C to make reactor interior reaction temperature, while auger
Oar mixes to each raw material, rotating speed 30rpm/min；
6) after lignin fully softens degraded, the running water of surplus is added, reactor temperature is reduced to 51 DEG C,
Continue to stir, propeller rotating speed is 26rpm/min, mixing time 23min, obtains mixed material；
7) methylcellulose of above-mentioned dosage, poly-aspartic-acid, general is sequentially added into the mixed material in step 6)
Shandong orchid polysaccharide, continues to stir, and the rotating speed of propeller is 22rpm/min, and mixing time 46min, temperature is 42 DEG C；
8) mixed material for obtaining step 7) is cooled down, and by the way of being stirred using side in a kettle and become cooling, is treated
Mixed material temperature stops stirring when being cooled to 30 DEG C or so；
9) material cooled down in step 8) is inputted in colloid mill by liquid pump and refined, reach its fineness
180-220 mesh；
10) quantitative package after inspection by sampling is qualified.
Embodiment 3
The raw material of the sustained-controll-release fertiliser coating agent of the present embodiment forms：
The preparation method of the sustained-controll-release fertiliser coating agent of the present embodiment is as follows：
1) lignin is weighed by above-mentioned dosage, added in the enamel reaction still that volume is 1.5 cubic metres；
2) corn oil is weighed by above-mentioned dosage, added in the reactor into step 1)；
3) running water is weighed by above-mentioned dosage, adds the running water of 1/2 amount into the reactor of step 2)；
4) sulfuric acid is weighed by above-mentioned dosage, added into the reactor of step 3)；
5) reactor of each raw material of above-mentioned addition is heated, it is 124 DEG C to make reactor interior reaction temperature, while auger
Oar mixes to each raw material, rotating speed 30rpm/min；
6) after lignin fully softens degraded, the running water of surplus is added, reactor temperature is reduced to 56 DEG C,
Continue to stir, propeller rotating speed is 26rpm/min, mixing time 20min, obtains mixed material；
7) methylcellulose of above-mentioned dosage, poly-aspartic-acid, general is sequentially added into the mixed material in step 6)
Shandong orchid polysaccharide, continues to stir, and the rotating speed of propeller is 22rpm/min, and mixing time 52min, temperature is 38 DEG C；
8) mixed material for obtaining step 7) is cooled down, and by the way of being stirred using side in a kettle and become cooling, is treated
Mixed material temperature stops stirring when being cooled to 30 DEG C or so；
9) material cooled down in step 8) is inputted in colloid mill by liquid pump and refined, reach its fineness
180-220 mesh；
10) quantitative package after inspection by sampling is qualified.
Experimental example 1
In order to verify slow controlled-release effect of the sustained-controll-release fertiliser coating agent of the present invention to fertilizer, by embodiments of the invention 1-
The 3 sustained-controll-release fertiliser coating agents prepared coat to complex fertilizer particle, specifically, granulated fertilizer is put into rotary drum coating
In machine, coating agent 5kg, while logical heated-air drying are sprayed in the fertiliser granulates surface that 500kg is rolled, forms one layer outside to particle
After even film, coated fertilizer is obtained.The coated fertilizer of embodiments of the invention 1-3 coating agent cladding, test bag are prepared respectively
The slow controlled-release effect of film fertilizer, its specific test result such as table 1 below.
Wherein, the specific method of inspection of the slow controlled release characteristics is：The above-mentioned coated fertilizers of 10g are taken to be put into the nylon of 100 mesh
In the pouch that gauze is made, after sealing, pouch is put into 250mL vials, 200mL water is added, encryption capping, is placed in 25 DEG C
Biochemical constant incubator in, sample time 24h, 3d, 7d, 14d, 28d, 42d, 56d, 84d, 112d, 140d, 168d and with
The time interval sampled afterwards is 28d, until accumulation nutrient dissolved percentage reaches 80%.During sampling, vial is turned upside down three times,
Make the strength of fluid in bottle consistent, move into 250mL volumetric flasks, be settled to scale after being cooled to room temperature, determine nutrient.Then,
200mL water is added into the vial equipped with coated fertilizer pouch, biochemical constant incubator is put into after sealing and continues to train
Support.
According to fertilizer releasing period t=28+ (80%- ν28)/△ν14-28Fertilizer releasing period is calculated, wherein, ν28Add up for 28d
Nutrient release rate, unit %；△ν14-28For 14d to 28d average rate of release, unit %/d, △ ν14-28=(ν14-
ν28)/(14-28), wherein, ν14Add up nutrient release rate for 14d.
The slow controlled-release effect and fertilizer efficiency test result of 1 different coating agents of table processing
As can be known from Table 1, after coating agent coated fertilizer of the invention, the slow controlled-release effect of fertilizer can be effectively improved, fertilizer
The fertilizer releasing period of material is greatly prolonged, and improves the utilization rate of fertilizer, is reduced rate of fertilizer, is reduced cost.
Although illustrate and describing the present invention with specific embodiment, but will be appreciated that without departing substantially from the present invention's
Many other change and modification can be made in the case of spirit and scope.It is, therefore, intended that in the following claims
Including belonging to all such changes and modifications in the scope of the invention.
Claims (10)
1. a kind of sustained-controll-release fertiliser coating agent, it is characterised in that be mainly made by following raw material：In terms of parts by weight, Propiram
Polysaccharide 17-22 parts, poly-aspartic-acid 14-19 parts, lignin 12-17 parts, methylcellulose 7-12 parts, corn oil 11-
14 parts, water 29-35 parts, sulfuric acid 0.5-0.8 parts.
2. coating agent according to claim 1, it is characterised in that the sustained-controll-release fertiliser coating agent, mainly by following original
Material is made：In terms of parts by weight, pulullan polysaccharide 19-22 parts, poly-aspartic-acid 14-16 parts, lignin 14-17 parts, first
Base cellulose 7-8 parts, corn oil 11-12 parts, water 29-33 parts, sulfuric acid 0.5-0.6 parts.
3. the preparation method of the coating agent described in claim 1 or 2, it is characterised in that comprise the following steps：By lignin, jade
Rice bran oil, water and sulfuric acid mix, and heat；Then methylcellulose, poly-aspartic-acid, pulullan polysaccharide are added, is mixed
Refinement is cooled down after closing stirring, obtains sustained-controll-release fertiliser coating agent.
4. the preparation method of coating agent according to claim 3, it is characterised in that by lignin, corn oil, water and sulfuric acid
Mix, be heated to 112-124 DEG C and reacted.
5. the preparation method of coating agent according to claim 4, it is characterised in that the lignin, corn oil, water and sulphur
The method that acid is mixed and heated includes：Corn oil, the water of 1/2-2/3 amounts, sulfuric acid are added in lignin, are heated to
112-124 DEG C, stir after lignin fully softens degraded, add the water cooling of surplus, continue to mix；
Preferably, add in lignin and mix according to the order of corn oil, the water of 1/2-2/3 amounts, sulfuric acid successively.
6. the preparation method of coating agent according to claim 5, it is characterised in that the water for adding surplus is cooled to 45-
Between 56 DEG C.
7. the preparation method of coating agent according to claim 3, it is characterised in that add methylcellulose, poly- lucid asparagus
After propylhomoserin, pulullan polysaccharide, in 38-46 DEG C of mixing；
Preferably, after adding methylcellulose, poly-aspartic-acid, pulullan polysaccharide, the speed of mixing is 18-25rpm/
Min, the time of mixing is 40-52min；
It is furthermore preferred that after adding methylcellulose, poly-aspartic-acid, pulullan polysaccharide, the speed of mixing is 22rpm/
min。
8. the preparation method of coating agent according to claim 3, it is characterised in that the method for the cooling includes：Will be mixed
Close stirring material continue stirring make temperature be not higher than 30 DEG C after, stop stirring.
9. the preparation method of coating agent according to claim 3, it is characterised in that the fineness of the refinement reaches 180 mesh.
10. the preparation method of coating agent according to claim 5, it is characterised in that 112-124 DEG C is heated to, in 25-
35rpm/min, which stirs, fully softens degraded to lignin；After adding the water cooling of surplus, stirred in 22-31rpm/min rotating speeds
20-25min；
Preferably, 112-124 DEG C is heated to, is stirred in 30rpm/min and fully softens degraded to lignin；Add the water of surplus
After cooling, 20-25min is stirred in 26rpm/min rotating speeds.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108675886A (en) * | 2018-08-10 | 2018-10-19 | 湖北茂盛生物有限公司 | A kind of selenium-rich zoology slow release fertilizer and preparation method thereof |
| CN108929165A (en) * | 2018-08-10 | 2018-12-04 | 湖北茂盛生物有限公司 | A kind of selenium-rich synchronous slow paddy rice-dedicated fertilizer and preparation method thereof |
| CN113480372A (en) * | 2021-08-06 | 2021-10-08 | 林猷宪 | Controlled-release organic microbial fertilizer |
| CN116512687A (en) * | 2023-03-17 | 2023-08-01 | 中国海洋大学 | Biodegradable nanocellulose-pullulan-lignin food outer packaging material and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101885646A (en) * | 2009-05-14 | 2010-11-17 | 张希纯 | Biological slow-released urea and preparation method thereof |
| CN102653483A (en) * | 2011-03-01 | 2012-09-05 | 张希纯 | Controlled-release nitrogen potash fertilizer and preparation method thereof |
| CN102701865A (en) * | 2012-06-21 | 2012-10-03 | 德国红牛国际化工集团（中国）有限公司 | Synergistic additive of chemical fertilizer and production method of synergistic additive |
| CN104987162A (en) * | 2014-12-25 | 2015-10-21 | 天津北洋百川生物技术有限公司 | Granular fertilizer and preparation method thereof |
-
2017
- 2017-10-30 CN CN201711035295.6A patent/CN107652134A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101885646A (en) * | 2009-05-14 | 2010-11-17 | 张希纯 | Biological slow-released urea and preparation method thereof |
| CN102653483A (en) * | 2011-03-01 | 2012-09-05 | 张希纯 | Controlled-release nitrogen potash fertilizer and preparation method thereof |
| CN102701865A (en) * | 2012-06-21 | 2012-10-03 | 德国红牛国际化工集团（中国）有限公司 | Synergistic additive of chemical fertilizer and production method of synergistic additive |
| CN104987162A (en) * | 2014-12-25 | 2015-10-21 | 天津北洋百川生物技术有限公司 | Granular fertilizer and preparation method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108675886A (en) * | 2018-08-10 | 2018-10-19 | 湖北茂盛生物有限公司 | A kind of selenium-rich zoology slow release fertilizer and preparation method thereof |
| CN108929165A (en) * | 2018-08-10 | 2018-12-04 | 湖北茂盛生物有限公司 | A kind of selenium-rich synchronous slow paddy rice-dedicated fertilizer and preparation method thereof |
| CN113480372A (en) * | 2021-08-06 | 2021-10-08 | 林猷宪 | Controlled-release organic microbial fertilizer |
| CN116512687A (en) * | 2023-03-17 | 2023-08-01 | 中国海洋大学 | Biodegradable nanocellulose-pullulan-lignin food outer packaging material and preparation method thereof |
| CN116512687B (en) * | 2023-03-17 | 2023-09-26 | 中国海洋大学 | Biodegradable nanocellulose-pullulan-lignin food outer packaging material and preparation method thereof |
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