CN107805503A - A kind of biodegradable sand loam soil water-reataining fertilizer-keeping agent - Google Patents
A kind of biodegradable sand loam soil water-reataining fertilizer-keeping agent Download PDFInfo
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- CN107805503A CN107805503A CN201711073903.2A CN201711073903A CN107805503A CN 107805503 A CN107805503 A CN 107805503A CN 201711073903 A CN201711073903 A CN 201711073903A CN 107805503 A CN107805503 A CN 107805503A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/40—Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
- C08B37/0006—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid
- C08B37/0009—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid alpha-D-Glucans, e.g. polydextrose, alternan, glycogen; (alpha-1,4)(alpha-1,6)-D-Glucans; (alpha-1,3)(alpha-1,4)-D-Glucans, e.g. isolichenan or nigeran; (alpha-1,4)-D-Glucans; (alpha-1,3)-D-Glucans, e.g. pseudonigeran; Derivatives thereof
- C08B37/0012—Cyclodextrin [CD], e.g. cycle with 6 units (alpha), with 7 units (beta) and with 8 units (gamma), large-ring cyclodextrin or cycloamylose with 9 units or more; Derivatives thereof
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F251/00—Macromolecular compounds obtained by polymerising monomers on to polysaccharides or derivatives thereof
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
- C08G69/48—Polymers modified by chemical after-treatment
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
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Abstract
The invention discloses a kind of biodegradable sand loam soil water-reataining fertilizer-keeping agent, it is related to water-reataining fertilizer-keeping agent technical field, is made up of the raw material of following parts by weight：30 40 parts of carboxymethyl beta cyclodextrin, 15 20 parts of soil level polyglutamic acid, 10 15 parts of hydroxypropyl starch ether, 5 10 parts of atlapulgite, 5 10 parts of N hydroxyethyl acrylamides, 15 parts of trihydroxymethylpropanyltri diglycidyl ether, 15 parts of super fine magnesia, 0.5 2 parts of HPMA, 0.5 2 parts of compatilizer of maleic anhydride grafting, 0.5 2 parts of rilanit special.The retain water and nutrients that the made water-reataining fertilizer-keeping agent of the present invention is applied to sand loam soil are handled, and can effectively solve the problems, such as that moisture existing for sand loam soil and fertility loss are serious, to ensure the normal growth of crop, water and fertilizer application frequency are applied in reduction.
Description
Technical field：
The present invention relates to water-reataining fertilizer-keeping agent technical field, and in particular to a kind of biodegradable sand loam soil retain water and nutrients
Agent.
Background technology：
Sand loam soil, refer to that grain containing sand is more and there is the soil of certain viscosity.Water stability is good after compacting, and intensity is higher,
Capillarity is small.Without cohesive strength between particle, property is loose, and the soil of non-plastic is mainly made up of 0.075-2mm particle.By grain
Degree composition, can be divided into coarse sand, middle sand, fine sand and flour sand.
Sand loam soil aeration is good, farming facility, is not easy by flood, but nutrient content is low, and nutrient preserving capability is poor.Due to sand loam soil
Space is again big more between sand grains and sand grains, and organic matter decomposition is fast, while is unfavorable for the accumulation of the soil organism.Also, grittiness
Usually water is few, gas is more for soil, and daytime, watch soil temperature degree rose soon, and night easy radiating and cooling, so day and night temperature is big.In morning
Spring soil temperature is gone up fast, is advantageous to winter wheat and is turned green and cotton, peanut and other crops growth.But in late fall, because soil temperature declines soon, to more
Winter is unfavorable as growing.In addition, easily there is early ageing in the plant growth later stage, so as to cause crop failure.
In order to improve the retain water and nutrients ability of sand loam soil, it is necessary to artificially add water-reataining fertilizer-keeping agent into sand loam soil.Mesh
Before, although commercially available water-reataining fertilizer-keeping agent all possesses certain retain water and nutrients ability, biological degradability is poor, is easily dropped after long-term use of
The aeration of low soil, or even soil hardening is caused, so as to influence the healthy growth of crop.
The content of the invention：
It is excellent and strong using the feature of environmental protection that the technical problems to be solved by the invention are to provide a kind of retain water and nutrients performance
Biodegradable sand loam soil water-reataining fertilizer-keeping agent.
The technical problems to be solved by the invention are realized using following technical scheme：
A kind of biodegradable sand loam soil water-reataining fertilizer-keeping agent, is made up of the raw material of following parts by weight：
Carboxymethyl-beta-cyclodextrin 30-40 parts, soil level polyglutamic acid 15-20 parts, hydroxypropyl starch ether 10-15 parts, work
Property carclazyte 5-10 parts, N- hydroxyethyl acrylamide 5-10 parts, trihydroxymethylpropanyltri diglycidyl ether 1-5 parts, super fine magnesia
1-5 parts, HPMA 0.5-2 parts, maleic anhydride grafting compatilizer 0.5-2 parts, rilanit special 0.5-2 parts.
Its preparation method comprises the following steps：
(1) 0.5wt% dilute sulfuric acids are added dropwise until being completely dissolved into carboxymethyl-beta-cyclodextrin under stirring, add N- hydroxyls
Ethyl acrylamide and maleic anhydride grafting compatilizer, and reflux state insulated and stirred 2-5h is heated to, then it is transferred to 0-5 DEG C of ring
Sealing and standing 1-3h in border, gained mixture are again heated to reflux state insulated and stirred 10-15min, naturally cool to room temperature
It is sent into afterwards in freeze drier, dries gained solid and micro mist is made through micronizer, produce modified cyclodextrin；
(2) hydroxypropyl starch ether is heated to 115-120 DEG C of insulated and stirred 5-10min, adds trimethylolpropane tris
Glycidol ether and HPMA, continue the insulated and stirred 0.5-2h at 115-120 DEG C, naturally cool to 45-50 DEG C,
Under stirring into gained mixture add etc. weight boiling water, continue stir 5-10min, gained mixed liquor be sent into spray dryer
In, dry gained particle and micro mist is made through micronizer, produce modified starch ether；
(3) atlapulgite and super fine magnesia are heated to 105-110 DEG C of insulated and stirred 10-15min, add hydrogenation castor
Sesame oil, continue the insulated and stirred 5-10min at 105-110 DEG C, and naturally cool to room temperature under milling, produce shaping assistant；
(4) soil level polyglutamic acid, modified starch ether and shaping assistant are added into modified cyclodextrin, after being sufficiently mixed
It is sent into granulator, particle of the granularity in 0.5-1mm is made, produces water-reataining fertilizer-keeping agent.
Modified polyglutamic acid is made in the chemically modified processing of soil level polyglutamic acid, its specific method of modifying
For：Water is added dropwise until being completely dissolved into soil level polyglutamic acid under stirring, and 5wt% dilute sulfuric acids regulation solution ph is added dropwise
To 4-5, ten dihydroxystearic acids are added, are heated to reflux state insulated and stirred 2-5h, gained mixed liquor is through the system of being concentrated under reduced pressure
Into solid content 50-55% lotion, it is sent into after naturally cool to after room temperature in freeze drier, dries gained solid through Ultramicro-powder
Micro mist is made in broken machine, produces modified polyglutamic acid.
The soil level polyglutamic acid, the mass ratio of ten dihydroxystearic acids are 25-35:10-15.
The atlapulgite is formed by bentonite modified, and its specific method of modifying is：First by bentonite in 110-120 DEG C
5-12h is dried in baking oven, and adds 5wt% sodium gluconate solutions, 1-2h is stood after stirring, is sufficiently stirred again, mistake
Filter, washing, absolute ethyl alcohol, NIPA and trimethylolpropane trimethacrylate are added into gained filter residue, is filled
Microwave treater microwave reflow treatment 10min is utilized after dividing mixing, continues microwave reflow treatment 10min, gained after being spaced 10min
The vacuum dried device drying of mixture is most made micro mist through micronizer afterwards, produces atlapulgite to constant weight.
The bentonite, 5wt% sodium gluconate solutions, absolute ethyl alcohol, NIPA and trihydroxy methyl third
The mass ratio of alkane triacrylate is 5-10:10-15:15-20:1-5:0.5-3.
The condition of work of the microwave treater is microwave frequency 2450MHz, power output 700W.
Modification theory of the present invention：
Institute's hydroxyl, carboxyl occur in contained carboxyl, amino and ten dihydroxystearic acid structures in polyglutamic acid structure
Esterification, amidation process, so as to improve the absorption property of polyglutamic acid.
Bentonite utilizes sodium gluconate solution washing impurity-removing after drying, and passes through NIPA and three hydroxyls
The modification of propane tri, to strengthen bentonitic absorption property.
The beneficial effects of the invention are as follows：
(1) present invention using carboxymethyl-beta-cyclodextrin as major ingredient, assist with soil level polyglutamic acid, hydroxypropyl starch ether and
Water-reataining fertilizer-keeping agent is made in multiple auxiliary materials, and the retain water and nutrients that made water-reataining fertilizer-keeping agent is applied to sand loam soil are handled, can effectively solved
Moisture existing for sand loam soil and fertility are lost in the problem of serious, and to ensure the normal growth of crop, water and fertilising time are applied in reduction
Number, so as to reduce cultivation cost, improve utilization rate of fertilizer and then improve crop yield；
(2) the made water-reataining fertilizer-keeping agent of the present invention has preferable biological degradability, and being applied to after soil can be in a timing
Between effectively degraded, influence the aeration of sand loam soil so as to avoid the chronic administration of water-reataining fertilizer-keeping agent or even cause soil plate
The problem of knot.
Embodiment：
In order that the technical means, the inventive features, the objects and the advantages of the present invention are easy to understand, tie below
Specific embodiment is closed, the present invention is expanded on further.
Embodiment 1
(1) 0.5wt% dilute sulfuric acids are added dropwise until being completely dissolved into 30g carboxymethyl-beta-cyclodextrins under stirring, add 5g
N- hydroxyethyl acrylamides and 0.5g maleic anhydrides grafting compatilizer, and reflux state insulated and stirred 3h is heated to, then it is transferred to
Sealing and standing 2h in 0-5 DEG C of environment, gained mixture are again heated to reflux state insulated and stirred 15min, naturally cool to room
It is sent into after temperature in freeze drier, dries gained solid and micro mist is made through micronizer, produce modified cyclodextrin；
(2) 10g hydroxypropyl starch ethers are heated to 115-120 DEG C of insulated and stirred 10min, add 2g trimethylolpropanes
Triglycidyl ether and 0.5g HPMAs, continue the insulated and stirred 1h at 115-120 DEG C, naturally cool to 45-50
DEG C, under stirring into gained mixture add etc. weight boiling water, continue stir 10min, gained mixed liquor be sent into spray drying
In machine, dry gained particle and micro mist is made through micronizer, produce modified starch ether；
(3) 8g atlapulgites and 2g super fine magnesias are heated to 105-110 DEG C of insulated and stirred 15min, add 1g hydrogen
Change castor oil, continue the insulated and stirred 10min at 105-110 DEG C, and naturally cool to room temperature under milling, produce shaping and help
Agent；
(4) 20g soil levels polyglutamic acid, modified starch ether and shaping assistant are added into modified cyclodextrin, it is fully mixed
It is sent into after conjunction in granulator, particle of the granularity in 0.5-1mm is made, produces water-reataining fertilizer-keeping agent.
Embodiment 2
(1) 0.5wt% dilute sulfuric acids are added dropwise until being completely dissolved into 40g carboxymethyl-beta-cyclodextrins under stirring, add 8g
N- hydroxyethyl acrylamides and 1g maleic anhydrides grafting compatilizer, and reflux state insulated and stirred 4h is heated to, then it is transferred to 0-5
Sealing and standing 2h in DEG C environment, gained mixture is again heated to reflux state insulated and stirred 15min, after naturally cooling to room temperature
It is sent into freeze drier, dries gained solid and micro mist is made through micronizer, produce modified cyclodextrin；
(2) 15g hydroxypropyl starch ethers are heated to 115-120 DEG C of insulated and stirred 10min, add 3g trimethylolpropanes
Triglycidyl ether and 0.5g HPMAs, continue the insulated and stirred 1h at 115-120 DEG C, naturally cool to 45-50
DEG C, under stirring into gained mixture add etc. weight boiling water, continue stir 10min, gained mixed liquor be sent into spray drying
In machine, dry gained particle and micro mist is made through micronizer, produce modified starch ether；
(3) 10g atlapulgites and 3g super fine magnesias are heated to 105-110 DEG C of insulated and stirred 15min, add 2g hydrogen
Change castor oil, continue the insulated and stirred 10min at 105-110 DEG C, and naturally cool to room temperature under milling, produce shaping and help
Agent；
(4) 15g soil levels polyglutamic acid, modified starch ether and shaping assistant are added into modified cyclodextrin, it is fully mixed
It is sent into after conjunction in granulator, particle of the granularity in 0.5-1mm is made, produces water-reataining fertilizer-keeping agent.
Embodiment 3
(1) 0.5wt% dilute sulfuric acids are added dropwise until being completely dissolved into 40g carboxymethyl-beta-cyclodextrins under stirring, add 8g
N- hydroxyethyl acrylamides and 1g maleic anhydrides grafting compatilizer, and reflux state insulated and stirred 4h is heated to, then it is transferred to 0-5
Sealing and standing 2h in DEG C environment, gained mixture is again heated to reflux state insulated and stirred 15min, after naturally cooling to room temperature
It is sent into freeze drier, dries gained solid and micro mist is made through micronizer, produce modified cyclodextrin；
(2) 15g hydroxypropyl starch ethers are heated to 115-120 DEG C of insulated and stirred 10min, add 3g trimethylolpropanes
Triglycidyl ether and 0.5g HPMAs, continue the insulated and stirred 1h at 115-120 DEG C, naturally cool to 45-50
DEG C, under stirring into gained mixture add etc. weight boiling water, continue stir 10min, gained mixed liquor be sent into spray drying
In machine, dry gained particle and micro mist is made through micronizer, produce modified starch ether；
(3) 10g atlapulgites and 3g super fine magnesias are heated to 105-110 DEG C of insulated and stirred 15min, add 2g hydrogen
Change castor oil, continue the insulated and stirred 10min at 105-110 DEG C, and naturally cool to room temperature under milling, produce shaping and help
Agent；
(4) 15g soil levels polyglutamic acid, modified starch ether and shaping assistant are added into modified cyclodextrin, it is fully mixed
It is sent into after conjunction in granulator, particle of the granularity in 0.5-1mm is made, produces water-reataining fertilizer-keeping agent.
The modification of soil level polyglutamic acid：Water is added dropwise until completely molten into 30g soil level polyglutamic acids under stirring
Solution, and 5wt% dilute sulfuric acids are added dropwise and adjust solution ph to 4-5, the dihydroxystearic acids of 10g ten are added, are heated to reflux state
Solid content 50-55% lotion is made through being concentrated under reduced pressure for insulated and stirred 3h, gained mixed liquor, after naturally cool to being sent into after room temperature
In freeze drier, dry gained solid and micro mist is made through micronizer, produce modified polyglutamic acid.
Embodiment 4
(1) 0.5wt% dilute sulfuric acids are added dropwise until being completely dissolved into 40g carboxymethyl-beta-cyclodextrins under stirring, add 8g
N- hydroxyethyl acrylamides and 1g maleic anhydrides grafting compatilizer, and reflux state insulated and stirred 4h is heated to, then it is transferred to 0-5
Sealing and standing 2h in DEG C environment, gained mixture is again heated to reflux state insulated and stirred 15min, after naturally cooling to room temperature
It is sent into freeze drier, dries gained solid and micro mist is made through micronizer, produce modified cyclodextrin；
(2) 15g hydroxypropyl starch ethers are heated to 115-120 DEG C of insulated and stirred 10min, add 3g trimethylolpropanes
Triglycidyl ether and 0.5g HPMAs, continue the insulated and stirred 1h at 115-120 DEG C, naturally cool to 45-50
DEG C, under stirring into gained mixture add etc. weight boiling water, continue stir 10min, gained mixed liquor be sent into spray drying
In machine, dry gained particle and micro mist is made through micronizer, produce modified starch ether；
(3) 10g atlapulgites and 3g super fine magnesias are heated to 105-110 DEG C of insulated and stirred 15min, add 2g hydrogen
Change castor oil, continue the insulated and stirred 10min at 105-110 DEG C, and naturally cool to room temperature under milling, produce shaping and help
Agent；
(4) 15g soil levels polyglutamic acid, modified starch ether and shaping assistant are added into modified cyclodextrin, it is fully mixed
It is sent into after conjunction in granulator, particle of the granularity in 0.5-1mm is made, produces water-reataining fertilizer-keeping agent.
The modification of soil level polyglutamic acid：Water is added dropwise until completely molten into 35g soil level polyglutamic acids under stirring
Solution, and 5wt% dilute sulfuric acids are added dropwise and adjust solution ph to 4-5, the dihydroxystearic acids of 15g ten are added, are heated to reflux state
Solid content 50-55% lotion is made through being concentrated under reduced pressure for insulated and stirred 5h, gained mixed liquor, after naturally cool to being sent into after room temperature
In freeze drier, dry gained solid and micro mist is made through micronizer, produce modified polyglutamic acid.
Embodiment 5
(1) 0.5wt% dilute sulfuric acids are added dropwise until being completely dissolved into 40g carboxymethyl-beta-cyclodextrins under stirring, add 8g
N- hydroxyethyl acrylamides and 1g maleic anhydrides grafting compatilizer, and reflux state insulated and stirred 4h is heated to, then it is transferred to 0-5
Sealing and standing 2h in DEG C environment, gained mixture is again heated to reflux state insulated and stirred 15min, after naturally cooling to room temperature
It is sent into freeze drier, dries gained solid and micro mist is made through micronizer, produce modified cyclodextrin；
(2) 15g hydroxypropyl starch ethers are heated to 115-120 DEG C of insulated and stirred 10min, add 3g trimethylolpropanes
Triglycidyl ether and 0.5g HPMAs, continue the insulated and stirred 1h at 115-120 DEG C, naturally cool to 45-50
DEG C, under stirring into gained mixture add etc. weight boiling water, continue stir 10min, gained mixed liquor be sent into spray drying
In machine, dry gained particle and micro mist is made through micronizer, produce modified starch ether；
(3) 10g atlapulgites and 3g super fine magnesias are heated to 105-110 DEG C of insulated and stirred 15min, add 2g hydrogen
Change castor oil, continue the insulated and stirred 10min at 105-110 DEG C, and naturally cool to room temperature under milling, produce shaping and help
Agent；
(4) 15g soil levels polyglutamic acid, modified starch ether and shaping assistant are added into modified cyclodextrin, it is fully mixed
It is sent into after conjunction in granulator, particle of the granularity in 0.5-1mm is made, produces water-reataining fertilizer-keeping agent.
The modification of soil level polyglutamic acid：Water is added dropwise until completely molten into 35g soil level polyglutamic acids under stirring
Solution, and 5wt% dilute sulfuric acids are added dropwise and adjust solution ph to 4-5, the dihydroxystearic acids of 15g ten are added, are heated to reflux state
Solid content 50-55% lotion is made through being concentrated under reduced pressure for insulated and stirred 5h, gained mixed liquor, after naturally cool to being sent into after room temperature
In freeze drier, dry gained solid and micro mist is made through micronizer, produce modified polyglutamic acid.
The preparation of atlapulgite：10g bentonites are first dried into 5h in 110-120 DEG C of baking oven, and add 10g5wt% Portugals
Grape saccharic acid sodium solution, stands 1h, is sufficiently stirred again after stirring, filter, washing, and it is anhydrous that 20g is added into gained filter residue
Ethanol, 2g NIPAs and 1g trimethylolpropane trimethacrylates, microwave frequency is utilized after being sufficiently mixed
2450MHz, power output 700W microwave treater microwave reflow treatment 10min, continue microwave reflow treatment after being spaced 10min
10min, the vacuum dried device drying of gained mixture are most made micro mist through micronizer afterwards, produce atlapulgite to constant weight.
Embodiment 6
(1) 0.5wt% dilute sulfuric acids are added dropwise until being completely dissolved into 40g carboxymethyl-beta-cyclodextrins under stirring, add 8g
N- hydroxyethyl acrylamides and 1g maleic anhydrides grafting compatilizer, and reflux state insulated and stirred 4h is heated to, then it is transferred to 0-5
Sealing and standing 2h in DEG C environment, gained mixture is again heated to reflux state insulated and stirred 15min, after naturally cooling to room temperature
It is sent into freeze drier, dries gained solid and micro mist is made through micronizer, produce modified cyclodextrin；
(2) 15g hydroxypropyl starch ethers are heated to 115-120 DEG C of insulated and stirred 10min, add 3g trimethylolpropanes
Triglycidyl ether and 0.5g HPMAs, continue the insulated and stirred 1h at 115-120 DEG C, naturally cool to 45-50
DEG C, under stirring into gained mixture add etc. weight boiling water, continue stir 10min, gained mixed liquor be sent into spray drying
In machine, dry gained particle and micro mist is made through micronizer, produce modified starch ether；
(3) 10g atlapulgites and 3g super fine magnesias are heated to 105-110 DEG C of insulated and stirred 15min, add 2g hydrogen
Change castor oil, continue the insulated and stirred 10min at 105-110 DEG C, and naturally cool to room temperature under milling, produce shaping and help
Agent；
(4) 15g soil levels polyglutamic acid, modified starch ether and shaping assistant are added into modified cyclodextrin, it is fully mixed
It is sent into after conjunction in granulator, particle of the granularity in 0.5-1mm is made, produces water-reataining fertilizer-keeping agent.
The modification of soil level polyglutamic acid：Water is added dropwise until completely molten into 35g soil level polyglutamic acids under stirring
Solution, and 5wt% dilute sulfuric acids are added dropwise and adjust solution ph to 4-5, the dihydroxystearic acids of 15g ten are added, are heated to reflux state
Solid content 50-55% lotion is made through being concentrated under reduced pressure for insulated and stirred 5h, gained mixed liquor, after naturally cool to being sent into after room temperature
In freeze drier, dry gained solid and micro mist is made through micronizer, produce modified polyglutamic acid.
The preparation of atlapulgite：10g bentonites are first dried into 5h in 110-120 DEG C of baking oven, and add 15g5wt% Portugals
Grape saccharic acid sodium solution, stands 1h, is sufficiently stirred again after stirring, filter, washing, and it is anhydrous that 20g is added into gained filter residue
Ethanol, 3g NIPAs and 0.5g trimethylolpropane trimethacrylates, microwave frequency is utilized after being sufficiently mixed
2450MHz, power output 700W microwave treater microwave reflow treatment 10min, continue microwave reflow treatment after being spaced 10min
10min, the vacuum dried device drying of gained mixture are most made micro mist through micronizer afterwards, produce atlapulgite to constant weight.
Reference examples 1
(1) 0.5wt% dilute sulfuric acids are added dropwise until being completely dissolved into 40g carboxymethyl-beta-cyclodextrins under stirring, add 8g
N- hydroxyethyl acrylamides and 1g maleic anhydrides grafting compatilizer, and reflux state insulated and stirred 4h is heated to, then it is transferred to 0-5
Sealing and standing 2h in DEG C environment, gained mixture is again heated to reflux state insulated and stirred 15min, after naturally cooling to room temperature
It is sent into freeze drier, dries gained solid and micro mist is made through micronizer, produce modified cyclodextrin；
(2) 15g hydroxypropyl starch ethers are heated to 115-120 DEG C of insulated and stirred 10min, add 3g trimethylolpropanes
Triglycidyl ether and 0.5g HPMAs, continue the insulated and stirred 1h at 115-120 DEG C, naturally cool to 45-50
DEG C, under stirring into gained mixture add etc. weight boiling water, continue stir 10min, gained mixed liquor be sent into spray drying
In machine, dry gained particle and micro mist is made through micronizer, produce modified starch ether；
(3) 10g atlapulgites and 3g super fine magnesias are heated to 105-110 DEG C of insulated and stirred 15min, and under milling
Room temperature is naturally cooled to, produces shaping assistant；
(4) 15g soil levels polyglutamic acid, modified starch ether and shaping assistant are added into modified cyclodextrin, it is fully mixed
It is sent into after conjunction in granulator, particle of the granularity in 0.5-1mm is made, produces water-reataining fertilizer-keeping agent.
Reference examples 2
(1) 0.5wt% dilute sulfuric acids are added dropwise until being completely dissolved into 40g carboxymethyl-beta-cyclodextrins under stirring, add 8g
N- hydroxyethyl acrylamides and 1g maleic anhydrides grafting compatilizer, and reflux state insulated and stirred 4h is heated to, then it is transferred to 0-5
Sealing and standing 2h in DEG C environment, gained mixture is again heated to reflux state insulated and stirred 15min, after naturally cooling to room temperature
It is sent into freeze drier, dries gained solid and micro mist is made through micronizer, produce modified cyclodextrin；
(2) 10g atlapulgites and 3g super fine magnesias are heated to 105-110 DEG C of insulated and stirred 15min, add 2g hydrogen
Change castor oil, continue the insulated and stirred 10min at 105-110 DEG C, and naturally cool to room temperature under milling, produce shaping and help
Agent；
(3) 15g soil levels polyglutamic acid, 15g hydroxypropyl starch ethers and shaping assistant are added into modified cyclodextrin, is filled
It is sent into after dividing mixing in granulator, particle of the granularity in 0.5-1mm is made, produces water-reataining fertilizer-keeping agent.
Reference examples 3
(1) 15g hydroxypropyl starch ethers are heated to 115-120 DEG C of insulated and stirred 10min, add 3g trimethylolpropanes
Triglycidyl ether and 0.5g HPMAs, continue the insulated and stirred 1h at 115-120 DEG C, naturally cool to 45-50
DEG C, under stirring into gained mixture add etc. weight boiling water, continue stir 10min, gained mixed liquor be sent into spray drying
In machine, dry gained particle and micro mist is made through micronizer, produce modified starch ether；
(2) 10g atlapulgites and 3g super fine magnesias are heated to 105-110 DEG C of insulated and stirred 15min, add 2g hydrogen
Change castor oil, continue the insulated and stirred 10min at 105-110 DEG C, and naturally cool to room temperature under milling, produce shaping and help
Agent；
(3) 15g soil levels polyglutamic acid, modified starch ether and shaping is added into 40g carboxymethyl-beta-cyclodextrins to help
Agent, it is sent into after being sufficiently mixed in granulator, particle of the granularity in 0.5-1mm is made, produces water-reataining fertilizer-keeping agent.
Embodiment 7
Embodiment 1-6, the made water-reataining fertilizer-keeping agents of reference examples 1-3 retain water and nutrients effect are tested respectively.
Test condition：
(1) sand loam soil is chosen, often basin dress wind desiceted soil (water content is in 3-5%) 5kg, nitrogen, phosphorus, potassium in every kilogram of wind desiceted soil
Dosage is respectively 0.2g/kg, 0.1g/kg, 0.15g/kg, is uniformly mixed after made water-reataining fertilizer-keeping agent is mixed with fertilizer in soil,
Water-reataining fertilizer-keeping agent dosage is the 0.1% of wind desiceted soil quality, and sets the blank group for not applying water-reataining fertilizer-keeping agent, wherein fertilizer amount
Equal and component content is identical.
(2) the neat after seedling of intensive shadow on lung is treated, the consistent intensive shadow on lung 3 of growing way is retained per basin, irregularly watering, each irrigation amount control
For system in 600ml, harvest time claims fresh weight meter to produce.Postpartum dries pulverizing is counted, detects nitrogen, phosphorus, potassium content in intensive shadow on lung.Gather simultaneously
Pedotheque, soil moisture content is determined, and the fertility indexs such as organic matter, soil nutrient are detected after air-drying sieving.
(3) the above-mentioned test operation of repetition 5 times, test data is averaged, as a result as shown in Table 1 and Table 2.
The influence that 1 water-reataining fertilizer-keeping agent of the present invention of table absorbs to intensive shadow on lung yield, nitrogen, phosphorus, potassium
| Group | Average product g/pot | Nitrogen/% | Phosphorus/% | Potassium/% |
| Blank group | 45.16 | 6.01 | 0.71 | 5.42 |
| Embodiment 1 | 53.73 | 6.82 | 0.83 | 6.39 |
| Embodiment 2 | 53.91 | 6.85 | 0.85 | 6.41 |
| Embodiment 3 | 55.84 | 6.92 | 0.89 | 6.47 |
| Embodiment 4 | 56.05 | 6.93 | 0.89 | 6.49 |
| Embodiment 5 | 58.62 | 6.99 | 0.95 | 6.54 |
| Embodiment 6 | 58.98 | 6.99 | 0.96 | 6.56 |
| Reference examples 1 | 53.41 | 6.78 | 0.80 | 6.33 |
| Reference examples 2 | 51.36 | 6.53 | 0.76 | 6.15 |
| Reference examples 3 | 48.57 | 6.32 | 0.72 | 5.62 |
Holding effect of 2 water-reataining fertilizer-keeping agent of the present invention of table to sand loam soil moisture and nutrient
| Group | Water content/% | Organic matter/% | Alkali-hydrolyzable nitrogen/% | Rapid available phosphorus/% | Available potassium/% |
| Blank group | 51.18 | 0.81 | 68.25 | 24.57 | 88.04 |
| Embodiment 1 | 59.49 | 1.16 | 78.43 | 29.36 | 93.25 |
| Embodiment 2 | 59.65 | 1.18 | 78.26 | 29.64 | 93.07 |
| Embodiment 3 | 62.13 | 1.36 | 79.58 | 31.29 | 95.36 |
| Embodiment 4 | 62.20 | 1.39 | 79.94 | 31.05 | 95.41 |
| Embodiment 5 | 65.27 | 1.55 | 81.89 | 35.18 | 98.18 |
| Embodiment 6 | 65.31 | 1.58 | 82.07 | 35.51 | 98.20 |
| Reference examples 1 | 59.12 | 1.14 | 78.12 | 29.92 | 92.99 |
| Reference examples 2 | 57.25 | 1.03 | 75.65 | 27.73 | 90.87 |
| Reference examples 3 | 54.08 | 0.89 | 70.36 | 25.16 | 88.65 |
Embodiment 8
Respectively by equivalent embodiment 1-6, reference examples 1-3 made water-reataining fertilizer-keeping agent mix in batch and the fresh collection of equivalent
In sand loam soil (sand loam soil water content is in 75-80%), when measure water-reataining fertilizer-keeping agent weight-loss ratio reaches 80% during required degraded
Between, measurement result is as shown in table 3.
The degradation effect of 3 water-reataining fertilizer-keeping agent of the present invention of table
| Group | Degradation time/d |
| Embodiment 1 | 105 |
| Embodiment 2 | 103 |
| Embodiment 3 | 99 |
| Embodiment 4 | 97 |
| Embodiment 5 | 84 |
| Embodiment 6 | 82 |
| Reference examples 1 | 108 |
| Reference examples 2 | 122 |
| Reference examples 3 | 143 |
The general principle and principal character and advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (7)
1. a kind of biodegradable sand loam soil water-reataining fertilizer-keeping agent, it is characterised in that be made up of the raw material of following parts by weight：
Carboxymethyl-beta-cyclodextrin 30-40 parts, soil level polyglutamic acid 15-20 parts, hydroxypropyl starch ether 10-15 parts, activity are white
Native 5-10 parts, N- hydroxyethyl acrylamide 5-10 parts, trihydroxymethylpropanyltri diglycidyl ether 1-5 parts, super fine magnesia 1-5
Part, HPMA 0.5-2 parts, maleic anhydride grafting compatilizer 0.5-2 parts, rilanit special 0.5-2 parts.
2. biodegradable sand loam soil water-reataining fertilizer-keeping agent according to claim 1, it is characterised in that its preparation method
Comprise the following steps：
(1) 0.5wt% dilute sulfuric acids are added dropwise until being completely dissolved into carboxymethyl-beta-cyclodextrin under stirring, add N- ethoxys
Acrylamide and maleic anhydride grafting compatilizer, and reflux state insulated and stirred 2-5h is heated to, then it is transferred in 0-5 DEG C of environment
Sealing and standing 1-3h, gained mixture are again heated to reflux state insulated and stirred 10-15min, sent after naturally cooling to room temperature
Enter in freeze drier, dry gained solid and micro mist is made through micronizer, produce modified cyclodextrin；
(2) hydroxypropyl starch ether is heated to 115-120 DEG C of insulated and stirred 5-10min, adds trimethylolpropane tris shrink
Glycerin ether and HPMA, continue the insulated and stirred 0.5-2h at 115-120 DEG C, naturally cool to 45-50 DEG C, stirring
The boiling water of the weight such as addition in the lower mixture to gained, continuing to stir 5-10min, gained mixed liquor is sent into spray dryer,
Dry gained particle and micro mist is made through micronizer, produce modified starch ether；
(3) atlapulgite and super fine magnesia are heated to 105-110 DEG C of insulated and stirred 10-15min, add hydrogenated castor
Oil, continue the insulated and stirred 5-10min at 105-110 DEG C, and naturally cool to room temperature under milling, produce shaping assistant；
(4) soil level polyglutamic acid, modified starch ether and shaping assistant are added into modified cyclodextrin, is sent into after being sufficiently mixed
In granulator, particle of the granularity in 0.5-1mm is made, produces water-reataining fertilizer-keeping agent.
3. biodegradable sand loam soil water-reataining fertilizer-keeping agent according to claim 1 or 2, it is characterised in that：The soil
Modified polyglutamic acid is made in the chemically modified processing of earth level polyglutamic acid, and its specific method of modifying is：To soil under stirring
Water is added dropwise until being completely dissolved in level polyglutamic acid, and 5wt% dilute sulfuric acids are added dropwise and adjust solution ph to 4-5, adds ten
Dihydroxystearic acid, is heated to reflux state insulated and stirred 2-5h, and solid content 50-55% is made through being concentrated under reduced pressure in gained mixed liquor
Lotion, after naturally cool to after room temperature be sent into freeze drier in, dry gained solid micro mist is made through micronizer, i.e.,
Polyglutamic acid must be modified.
4. biodegradable sand loam soil water-reataining fertilizer-keeping agent according to claim 3, it is characterised in that：The soil level
Polyglutamic acid, the mass ratio of ten dihydroxystearic acids are 25-35:10-15.
5. biodegradable sand loam soil water-reataining fertilizer-keeping agent according to claim 1 or 2, it is characterised in that：The work
Property carclazyte is formed by bentonite modified, and its specific method of modifying is：Bentonite is first dried into 5- in 110-120 DEG C of baking oven
12h, and 5wt% sodium gluconate solutions are added, 1-2h is stood after stirring, is sufficiently stirred again, is filtered, washing, to institute
Obtain and absolute ethyl alcohol, NIPA and trimethylolpropane trimethacrylate are added in filter residue, utilized after being sufficiently mixed
Microwave treater microwave reflow treatment 10min, continue microwave reflow treatment 10min after being spaced 10min, gained mixture is through vacuum
Drier drying is most made micro mist through micronizer afterwards, produces atlapulgite to constant weight.
6. biodegradable sand loam soil water-reataining fertilizer-keeping agent according to claim 5, it is characterised in that：The swelling
The matter of soil, 5wt% sodium gluconate solutions, absolute ethyl alcohol, NIPA and trimethylolpropane trimethacrylate
It is 5-10 to measure ratio:10-15:15-20:1-5:0.5-3.
7. biodegradable sand loam soil water-reataining fertilizer-keeping agent according to claim 5, it is characterised in that：At the microwave
The condition of work for managing device is microwave frequency 2450MHz, power output 700W.
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| CN111944536A (en) * | 2018-09-23 | 2020-11-17 | 邓文武 | Preparation method of heavy metal contaminated soil remediation agent |
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| CN110669528A (en) * | 2019-10-31 | 2020-01-10 | 安徽省农业科学院农业工程研究所 | Composite water-retaining agent special for oil tea |
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