CN104804141A - Liquid fertilizing and water-retaining mulching film and preparation method thereof - Google Patents
Liquid fertilizing and water-retaining mulching film and preparation method thereof Download PDFInfo
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- CN104804141A CN104804141A CN201510171925.7A CN201510171925A CN104804141A CN 104804141 A CN104804141 A CN 104804141A CN 201510171925 A CN201510171925 A CN 201510171925A CN 104804141 A CN104804141 A CN 104804141A
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Abstract
The invention relates to a liquid fertilizing and water-retaining mulching film and a preparation method thereof and belongs to the technical field of agricultural production. The liquid mulching film comprises components in percentage by mass as follows: 1%-10% of a modified macromolecular composite polymer and 90%-99% of a fertilizing agent; the modified macromolecular composite polymer comprises components in parts by weight as follows: 35-45 parts of ultra-fine silica sol, 5-10 parts of zinc oxide, 40-100 parts of carboxymethylcellulose or hydroxypropyl methyl cellulose, 20-30 parts of N-isopropylacrylamide, 0.02-0.3 parts of a cross-linking agent and 0.4-1.2 parts of an initiator; the solid content of the ultra-fine silica sol is in a range of 10-30wt%, and particle sizes of silica in the ultra-fine silica sol are in a range of 1-100 nm. The prepared liquid mulching film can significantly increase the water-retention rate of soil and improve physical and chemical properties of the soil, can be completely degraded, is free of pollution and can substitute for plastic mulching films on a large scale.
Description
Technical field
The present invention relates to a kind of Farm mulch, be specifically related to a kind of getting fat water conservation liquid-state mulch film and preparation method thereof, this mulch film is the composite liquefied mulch film of a kind of high molecular polymer, has water conservation, getting fat, degradable effect, belongs to field of agricultural production technologies.
Background technology
Plastic film has the effects such as insulation, water conservation, frost protection, and the application of ground membrane technique serves crop yield and benefit and improves greatly and increasing action, more changes human agriculture's mode of production and has developed human agriculture's productivity.Last century, the seventies, China introduced film coating technique first, ended China's plastic film mulching area in 2005 more than more than 100,000,000 mu, nurse crop also more than kind more than 50, and annual still with 10% speed increase.Research statistics, remain in soil after a lot of local plastic sheeting for farm use uses, this situation not merely appears at China, is all like this all over the world.About there are the plastics of 700,000 tons in the annual whole world for membrane covering.A large amount of uses of plastic film make the residual film remained in soil get more and more, and not only have impact on the physico-chemical property of soil, also can make crop production reduction.So the Study and Development of liquid-state mulch film causes the attention of many people.
Liquid-state mulch film is by a kind of cream, utilizes to suppress spray in soil surface and form one deck gel-like film.The object researching and developing liquid-state mulch film is the earliest for soil improvement, and Belgium goes out asphalt emulsifier at R & D Cooperation in 1963, and the test-results that this product is a lot of local in the world shows, the crumb structure increase in soil is caused by soil particle condenses by this product.Therefore new soil conditioner is become by world's accreditation soon.This product is brownish black, and emulsion state is soluble in water, without precipitation, by water adsorption volatilization prevention in soil, even if moisture evaporate to dryness, still again can disperse, have reversibility after again meeting water.Good achievement is achieved, especially in improvement soil, the evaporation of suppression moisture etc. after being applied.
Liquid-state mulch film, as the environmentally friendly mulch film of one, not only has very high improving effect to edatope, has very large promoter action to agriculture production simultaneously, and the domestic research to it has certain progress.
CN103087482A discloses a kind of degradable and can to topdress mulch film and preparation method thereof, comprises PBAT, poly(lactic acid), starch, softening agent, chainextender, degradable hydrotalcite master batch, filler and degradable Masterbatch.The problem that the residual native power that causes of the broken film of polyethylene in soil declines also has been stopped in this invention compared with conventional polyethylene mulch film while decreasing later stage winder workload.But there is the problems such as the bad control of film strength.
It take high molecular polymer as multifunctional degradable liquid-state mulch film of main component and preparation method thereof and using method that CN103865216A discloses a kind of.By weight percentage, liquid-state mulch film is 2%-8% polyvinyl alcohol, 2%-6% Xylo-Mucine, 0.1%-0.5% linking agent, 0.2%-0.5% defoamer, 0.3%-0.7% glycerine, and surplus is water.Mulch film of the present invention sprays in soil surface after being watered and fully stirring, and its high molecular hydrophilic radical can effectively be combined by the avtive spot on soil particle, forms cross-linked layer, can suppress soil water evaporation, slow down soil erosion at soil surface.This product has the crop emerges time that shortens, improvement Soil structure, promotes crop yield, to effects such as edatope are pollution-free.
CN 102212214A the invention provides a kind of biodegradable algae liquid plastic film, it is characterized in that, the component that described algae liquid plastic film comprises and weight part thereof are: Seaweed Extract 100 parts; Polyacrylic acid seaweed gel resin 2-10 part; Ligninsulfonate 50-70 part; Humic acids 10-20 part; Molasses, biochemical fulvic acid salt or the mixture 20-30 part mixed with the weight ratio of 1:2 by molasses and biochemical fulvic acid salt; Carboxymethyl cellulose 10-20 part; And water 300-500 part.
In prior art, the water conservation of liquid-state mulch film, insulation are with fertilizer conservation performance compared with plastics landforms, and film properties is generally not good, mainly play the effect of improvement soil.
Summary of the invention
The object of the invention is the technical problem for existing in prior art, a kind of getting fat water conservation liquid-state mulch film and preparation method thereof is provided.The present invention introduces water conservation nano-inorganic substance on the basis of high molecular polymer, the nutritious fertilizer compound needed with soil, effectively can substitute existing plastic film, play the effect of water conservation, fertilizer conservation, insulation, environment-friendly degradable.
For achieving the above object, the invention provides following technical scheme:
A kind of getting fat water conservation liquid-state mulch film, the mass percent of its raw material is composed as follows: modified high-molecular composition polymer 1%-10%, fertilizer synergist 90%-99%, and the weight part of wherein said modified high-molecular composition polymer consists of:
The weight part of described fertilizer synergist consists of:
Wherein, described superfine silica sol is the parent of nano silicon, and its preparation method is: water glass is diluted water-soluble after, ultrasonic vibration 10-20min mixes, formed concentration be the water glass solution of 5wt%-40wt%; By storng-acid cation exchange resin and strongly basic anion exchange resin by volume 1:2 ~ 1:3 be mixed to get compound resin; Water glass solution and compound exchange resin are fully uniformly mixed by weight 20:1 ~ 40:1, removing impurity, obtains pretreated silicate solution; In amount of activated silicate solution, add alkaline solution, adjust ph be 9-10, normal after press control 70-85 DEG C reacting by heating 1-3 hour particle diameter be silicon sol mother liquor; Silicon sol mother liquor carries out dehydration and divides, concentrates and purifying, and prepare the silicon sol that concentration is 10-30wt%, wherein silicon-dioxide particle diameter is between 1-100nm.
Preferably, shared by described superfine silica sol or nano silicon, parts by weight are 35-40, more preferably 35; Thickness of silica gel is 20wt%.In the present invention, superfine silica sol can be replaced the nano silicon that particle diameter is 1-100nm.
Preferably, shared by carboxymethyl cellulose or Vltra tears, parts by weight are 70-90, more preferably 75.
Preferably, described linking agent is N,N methylene bis acrylamide.
Preferably, described initiator is Potassium Persulphate and sodium sulphite anhydrous 99.3, and the two mass ratio is 1:1.
Another object of the present invention is to provide a kind of preparation method of getting fat water conservation liquid-state mulch film.
A preparation method for getting fat water conservation liquid-state mulch film, comprises the steps:
(1) modified high-molecular composition polymer is prepared: get the raw materials ready by following composition (weight part)
(2) prepare superfine silica sol: water glass is diluted water-soluble after, ultrasonic vibration 10-20min mixes, formed water glass solution; By storng-acid cation exchange resin and strongly basic anion exchange resin by volume 1:2 ~ 1:3 be mixed to get compound resin; Water glass solution and compound exchange resin are fully uniformly mixed by weight 20:1 ~ 40:1, removing impurity, obtains pretreated silicate solution; In amount of activated silicate solution, add alkaline solution, adjust ph be 9-10, normal after press control 70-85 DEG C reacting by heating 1-3 hour particle diameter be silicon sol mother liquor; Silicon sol mother liquor carries out dehydration and divides, concentrates and purifying, and prepare the silicon sol that concentration is 10-30wt%, wherein silicon-dioxide particle diameter is between 1-100nm.
Under normal temperature, carboxymethyl cellulose or Vltra tears are added deionized water, be stirred under nitrogen protection and dissolve completely; Add superfine silica sol solution and zinc oxide successively, form sol liquid; Then add NIPA monomer, under nitrogen atmosphere, heating temperatures to 20-50 DEG C, stirring and dissolving, about 5-30min; When homo(io)thermism, after pH value being adjusted to 8-11 with sodium hydroxide alkaline solution, add the aqueous solution of initiator potassium persulfate and sodium sulphite anhydrous 99.3, linking agent N successively, the aqueous solution of N-methylene-bisacrylamide, accelerates to stir, makes its crosslinking polymerization, abundant reaction, after insulation reaction 3h-11h, be cooled to room temperature, obtain organic-inorganic compoiste polymer gel; Gel is mixed with the aqueous solution that concentration is 2wt%-10wt%, after carrying out precipitate and separate with acetone to polymkeric substance, in vacuum drying oven, carry out drying, drying temperature is 50-80 DEG C, obtains modified high-molecular composition polymer.
(2) get the raw materials ready by the following composition (weight part) of fertilizer synergist:
Successively boron-moisten soil, diammonium phosphate, urea, three defocusing phosphoric acid, bicarbonate of ammonia, potassium sulfate and Sodium salts humic acids are mixed by weight, and pulverize, grind rear for subsequent use.
(3) modified high-molecular composition polymer prepared by step (1) is configured to the aqueous solution that concentration is 5wt%, heated and stirred, according to modified high-molecular composition polymer 1wt%-10wt%, fertilizer synergist 90wt%-99wt%, add the fertiliser mixtures in step (2), after fully dissolving mixing, in vacuum drying oven, carry out drying, drying temperature 50-80 DEG C, obtains this product.
Described superfine silica sol is the parent of nano silicon, and its preparation method is: water glass is diluted water-soluble after, ultrasonic vibration 10-20min mixes, formed concentration be the water glass solution of 5wt%-40wt%; By storng-acid cation exchange resin and strongly basic anion exchange resin by volume 1:2 ~ 1:3 be mixed to get compound exchange resin; Water glass solution and compound exchange resin are fully uniformly mixed by weight 20:1 ~ 40:1, removing impurity, obtains pretreated silicate solution; In silicate solution, add alkaline solution, adjust ph is 9-10, often obtains silicon sol mother liquor after press control 70-85 DEG C reacting by heating 1-3 hour; Silicon sol mother liquor carries out dehydration and divides, concentrates and purifying, and prepare the silicon sol that concentration is 10-30wt%, wherein silicon-dioxide particle diameter is between 1-100nm.
Preferably, it is characterized in that: described superfine silica sol replaces with nano silicon.
Preferably, it is characterized in that: triethylamine replaces with EDTA.
Preferably, shared by carboxymethyl cellulose or Vltra tears, parts by weight are 70-90, more preferably 75.
Wherein, boron-moisten soil, diammonium phosphate, urea, three defocusing phosphoric acid, bicarbonate of ammonia, potassium sulfate, Sodium salts humic acids provide the trace elements such as K, N, P of soil needs.
This product dilute with water is evenly sprayed on soil with agricultural spray equipment after dissolving.
Beneficial effect:
Improve soil water-retaining rate: liquid-state mulch film of the present invention can increase saturated hydraulic conductivity in soil on the one hand, soil water evaporation rate can be suppressed again on the other hand, play good water-retentivity.After liquid-state mulch film of the present invention uses, moisture evaporation inhibiting rate can more than 50%.Soil moisture content also at least improves more than 20%.This mainly the present invention according to carboxymethyl cellulose or Vltra tears, there is superior water-absorbent, super absorbent resin alicyclic monomer NIPA is introduced in chain be polymerized, be cross-linked, grafting, form reticulated structure, water molecules is made to be easy to contact with netted chain, infiltrate through areola, form gelling material and be stored up, by inorganic nano SiO
2coated carboxymethyl cellulose polymer compound action mechanism, the hydroxyl contained by rich surface is by physical adsorption and chemisorption large quantity of moisture, not only increase absorb subsemimodule and repeat water absorbing properties, further improve the performance of hydroscopic high-molecular resin salt tolerance difference, degree of crosslinking between polymer molecule can form reticulated structure, simultaneously intermolecular exist various ionic group, stronger water affinity can be produced, moisture can be pinned firmly, it tightly locked within reticulated structure, being formed can the gelling material of slow releasing moisture.
Improvement soil physicochemical property: liquid-state mulch film plays very high improving effect to soil.Liquid-state mulch film of the present invention and water easily form colloid, soil particle can be linked up, connect into giant grid, by the sandy soil that non-structure disperses, connect into and there is elastic liptinite, shape film-forming properties is good, mulch film that intensity is good, it can reduce unit weight, water-stable granule and increase soil porosity in soil can also be increased, effectively solve soil compaction problem.
Improve soil temperature: after spraying liquid-state mulch film, soil surface forms one layer of heat preservation film, and heat absorption heat-proof quality is good, significantly improves the temperature of soil.
Improve Crops production and quality: compound fertilizer synergist of the present invention, grows necessary micronutrient element containing various plants.Due to the reticulate chain structure of modified high-molecular composition polymer, there is very strong binding property and toughness, after water suction, can mulch film be formed, by soil and fertilizer parcel wherein, play slow releasing function, fertilizer and moisture are possessed and slow releasing simultaneously, serves the good result of preserve moisture and fertility.Not only increase the utilization ratio of trace element, and have certain slow-release function, what prevent trace element uses the injury caused plant in a large number.
Zero environmental: the present invention introduces photodegradation initiator zinc oxide, mulch film can be promoted to promote within certain duration of service, and photodegradation is CO
2and H
2o etc., year degradation rate 10%-30%.After liquid-state mulch film is overlying on soil surface, be subject to illumination, the effects such as microorganism, degrade, there is not the phenomenon of soil pollution, ecological benefits are obvious.
Embodiment
Embodiment 1
Prepare superfine silica sol: water glass is diluted water-soluble after, ultrasonic vibration 20min mixes, formed concentration be the water glass solution of 30wt%; By storng-acid cation exchange resin and strongly basic anion exchange resin by volume 1:2 be mixed to get compound resin; Water glass solution and compound exchange resin are fully uniformly mixed by weight 20:1, removing impurity, obtains pretreated silicate solution; In silicate solution, add alkaline solution, adjust ph be 9.5, normal press control 70 DEG C of reacting by heating after 2 hours silicon sol mother liquor; Silicon sol mother liquor carries out dehydration and divides, concentrates and purifying, and prepare the silicon sol that concentration is 20wt%, wherein silicon-dioxide particle diameter is between 1-100nm.
Under normal temperature, 4g carboxymethyl cellulose is added deionized water, be stirred under nitrogen protection and dissolve completely, adding 2g concentration is successively 20wt% superfine silica sol solution and 0.5g zinc oxide, forms sol liquid; Then 3g NIPA monomer is added, under nitrogen atmosphere, heating temperatures to 30 DEG C, stirring and dissolving is about 25min; By NaOH solution, pH value is adjusted to 9, adds containing 0.04g Potassium Persulphate and the 0.04g sodium sulphite anhydrous 99.3 aqueous solution successively, containing the 0.01g linking agent N,N methylene bis acrylamide aqueous solution, accelerate to stir, after insulation reaction 3h, be cooled to room temperature, obtain gel; Gel is mixed with the aqueous solution that concentration is 5wt%, after carrying out precipitate and separate with acetone to polymkeric substance, in vacuum drying oven, carry out drying, drying temperature 60 DEG C, obtains modified high-molecular polymkeric substance.
10g modified high-molecular polymkeric substance is configured to the aqueous solution that concentration is 5wt%, add 10g boron-moisten soil, 10g tri-defocusing phosphoric acid, 25g urea, 25g primary ammonium phosphate, 25g bicarbonate of ammonia, 22g potassium sulfate, 23g Sodium salts humic acids compound 115g successively, after abundant dissolving mixing, drying is carried out in vacuum drying oven, drying temperature 50-80 DEG C, obtain liquid-state mulch film of the present invention, after dilute with water, brute force is sprayed on soil surface.
Embodiment 2
Prepare superfine silica sol: water glass is diluted water-soluble after, ultrasonic vibration 10min mixes, formed concentration be the water glass solution of 25wt%; By storng-acid cation exchange resin and strongly basic anion exchange resin by volume 1:3 be mixed to get compound resin; Water glass solution and compound exchange resin are fully uniformly mixed by weight 40:1, removing impurity, obtains pretreated silicate solution; In silicate solution, add alkaline solution, adjust ph be 9, normal press control 85 DEG C of reacting by heating after 1 hour silicon sol mother liquor; Silicon sol mother liquor carries out dehydration and divides, concentrates and purifying, and prepare the silicon sol that concentration is 20wt%, wherein silicon-dioxide particle diameter is between 1-100nm.
Under normal temperature, 5g carboxymethyl cellulose is added deionized water, be stirred under nitrogen protection and dissolve completely, adding 1g concentration is successively 20wt% superfine silica sol solution and 0.5g zinc oxide, forms sol liquid; Then 3g NIPA monomer is added, under nitrogen atmosphere, heating temperatures to 30 DEG C, stirring and dissolving is about 25min; By NaOH solution, pH value is adjusted to 9, adds containing 0.05g Potassium Persulphate and the 0.05g sodium sulphite anhydrous 99.3 aqueous solution successively, containing the 0.01g linking agent N,N methylene bis acrylamide aqueous solution, accelerate to stir, after insulation reaction 3h, be cooled to room temperature, obtain gel; Gel is mixed with the aqueous solution that concentration is 5wt%, after carrying out precipitate and separate with acetone to polymkeric substance, in vacuum drying oven, carry out drying, drying temperature 60 DEG C, obtains modified high-molecular polymkeric substance.
8g modified high-molecular polymkeric substance is configured to the aqueous solution that concentration is 5wt%, add 12g boron-moisten soil, 12g tri-defocusing phosphoric acid, 25g urea, 25g primary ammonium phosphate, 25g bicarbonate of ammonia, 23g potassium sulfate, 23g Sodium salts humic acids compound 145g successively, after abundant dissolving mixing, drying is carried out in vacuum drying oven, drying temperature 50-80 DEG C, obtain liquid-state mulch film of the present invention, after dilute with water, brute force is sprayed on soil surface.
Embodiment 3
Prepare superfine silica sol: water glass is diluted water-soluble after, ultrasonic vibration 15min mixes, formed concentration be the water glass solution of 15wt%; By storng-acid cation exchange resin and strongly basic anion exchange resin by volume 1:2.5 be mixed to get compound resin; Water glass solution and compound exchange resin are fully uniformly mixed by weight 30:1, removing impurity, obtains pretreated silicate solution; In silicate solution, add alkaline solution, adjust ph be 10, normal press control 80 DEG C of reacting by heating after 3 hours silicon sol mother liquor; Silicon sol mother liquor carries out dehydration and divides, concentrates and purifying, and prepare the silicon sol that concentration is 20wt%, wherein silicon-dioxide particle diameter is between 1-100nm.
Under normal temperature, 10g carboxymethyl cellulose is added deionized water, be stirred under nitrogen protection and dissolve completely, adding 4g concentration is successively 20wt% superfine silica sol solution and 1g zinc oxide, forms sol liquid; Then 6g NIPA monomer is added, under nitrogen atmosphere, heating temperatures to 30 DEG C, stirring and dissolving is about 30min; By NaOH solution, pH value is adjusted to 9.5, adds containing 0.05g Potassium Persulphate and the 0.05g sodium sulphite anhydrous 99.3 aqueous solution successively, containing the 0.05g linking agent N,N methylene bis acrylamide aqueous solution, accelerate to stir, after insulation reaction 3h, be cooled to room temperature, obtain gel; Gel is mixed with the aqueous solution that concentration is 5wt%, after precipitate and separate being carried out to polymkeric substance with acetone, in vacuum drying oven, carries out drying, drying temperature 60 DEG C, obtain modified high-molecular polymkeric substance of the present invention.
15g modified high-molecular polymkeric substance is configured to the aqueous solution that concentration is 5wt%, add 15g boron-moisten soil, 15g tri-defocusing phosphoric acid, 30g urea, 28g primary ammonium phosphate, 28g bicarbonate of ammonia, 22g potassium sulfate, 22g Sodium salts humic acids compound 160g successively, after abundant dissolving mixing, drying is carried out in vacuum drying oven, drying temperature 50-80 DEG C, obtain liquid-state mulch film of the present invention, after dilute with water, brute force is sprayed on soil surface.
The getting fat water conservation liquid-state mulch film that the present invention prepares can significantly improve soil water-retaining rate, improvement soil physicochemical property, degradable pollution-free, can substituted for plastic mulch film on a large scale.
Claims (10)
1. a getting fat water conservation liquid-state mulch film, its raw material composition is as follows by mass percentage: modified high-molecular composition polymer 1-10%, fertilizer synergist 90%-99%, and wherein modified high-molecular composition polymer is made up of by weight following component:
Fertilizer synergist is made up of by weight following component:
Wherein, described superfine silica sol is the parent of nano silicon, and its preparation method is: water glass is diluted water-soluble after, ultrasonic vibration 10-20min mixes, formed water glass solution; By storng-acid cation exchange resin and strongly basic anion exchange resin by volume 1:2 ~ 1:3 be mixed to get compound resin; Water glass solution and compound exchange resin are fully uniformly mixed by weight 20:1 ~ 40:1, removing impurity, obtains pretreated silicate solution; In amount of activated silicate solution, add alkaline solution, adjust ph be 9-10, normal after press control 70-85 DEG C reacting by heating 1-3 hour particle diameter be silicon sol mother liquor; Silicon sol mother liquor carries out dehydration and divides, concentrates and purifying, and prepare the silicon sol that concentration is 10-30wt%, wherein silicon-dioxide particle diameter is between 1-100nm.
2. getting fat water conservation liquid-state mulch film according to claim 1, is characterized in that: described superfine silica sol replaces with nano silicon.
3. getting fat water conservation liquid-state mulch film according to claim 1, it is characterized in that: parts by weight shared by described superfine silica sol are 35-40, thickness of silica gel is 20wt%.
4. getting fat water conservation liquid-state mulch film material according to claim 1, is characterized in that: parts by weight shared by described superfine silica sol are 35.
5. the getting fat water conservation liquid-state mulch film according to any one of claim 1-4, is characterized in that: shared by carboxymethyl cellulose or Vltra tears, parts by weight are 70-90.
6. the getting fat water conservation liquid-state mulch film according to any one of claim 1-4, is characterized in that: described linking agent is N,N methylene bis acrylamide.
7. the getting fat water conservation liquid-state mulch film according to any one of claim 1-4, is characterized in that: described initiator is Potassium Persulphate and sodium sulphite anhydrous 99.3, and the two mass ratio is 1:1.
8. a preparation method for getting fat water conservation liquid-state mulch film as claimed in claim 1, comprises the steps:
(1) get the raw materials ready by composition described in claim 1 and proportioning;
(2) prepare superfine silica sol: wherein, described superfine silica sol is the parent of nano silicon, and its preparation method is: water glass is diluted water-soluble after, ultrasonic vibration 10-20min mixes, formed water glass solution; By storng-acid cation exchange resin and strongly basic anion exchange resin by volume 1:2 ~ 1:3 be mixed to get compound resin; Water glass solution and compound exchange resin are fully uniformly mixed by weight 20:1 ~ 40:1, removing impurity, obtains pretreated silicate solution; In amount of activated silicate solution, add alkaline solution, adjust ph be 9-10, normal after press control 70-85 DEG C reacting by heating 1-3 hour particle diameter be silicon sol mother liquor; Silicon sol mother liquor carries out dehydration and divides, concentrates and purifying, and prepare the silicon sol that concentration is 10-30wt%, wherein silicon-dioxide particle diameter is between 1-100nm;
(3) under normal temperature, carboxymethyl cellulose or Vltra tears are added deionized water, be stirred under nitrogen protection and dissolve completely;
(4) add superfine silica sol solution and zinc oxide successively, form sol liquid;
(5) then add NIPA monomer, under nitrogen atmosphere, heating temperatures to 20-50 DEG C, stirring and dissolving 5-30min;
(6) when homo(io)thermism, after pH value being adjusted to 8-11 with sodium hydroxide alkaline solution, add initiator potassium persulfate and the sodium sulphite anhydrous 99.3 aqueous solution, linking agent N successively, the N-methylene-bisacrylamide aqueous solution, accelerate to stir, its crosslinking polymerization is fully reacted, after insulation reaction 3h-11h, be cooled to room temperature, obtain organic-inorganic compoiste polymer gel;
(7) gel is mixed with the aqueous solution that concentration is 2wt%-10wt%, after precipitate and separate being carried out to polymkeric substance with acetone, in vacuum drying oven, carries out drying, drying temperature 50-80 DEG C, obtain modified high-molecular composition polymer;
(8) get the raw materials ready by the weight part composition of fertilizer synergist;
(9) successively by boron-moisten soil, diammonium phosphate, urea, three defocusing phosphoric acid, bicarbonate of ammonia, potassium sulfate and Sodium salts humic acids mix, and pulverize, grind rear for subsequent use;
(10) the modified high-molecular composition polymer of step (7) is configured to the aqueous solution that concentration is 5%, heated and stirred, according to modified high-molecular composition polymer 1wt%-10wt%, fertilizer synergist 90wt%-99wt%, add the fertilizer synergist in step (9), after fully dissolving mixing, in vacuum drying oven, carry out drying, drying temperature 50-80 DEG C, obtains this product.
9. the preparation method of getting fat water conservation liquid-state mulch film according to claim 8, is characterized in that: described superfine silica sol replaces with nano silicon.
10. the preparation method of getting fat water conservation liquid-state mulch film according to claim 8, is characterized in that: triethylamine replaces with EDTA; Parts by weight shared by carboxymethyl cellulose are 75.
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| CN111233560A (en) * | 2020-03-24 | 2020-06-05 | 四川科施福农业科技有限公司 | Fertilizer loss control agent and preparation method thereof, energy-gathering loss control fertilizer and preparation method thereof |
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| CN105294956A (en) * | 2015-10-30 | 2016-02-03 | 太仓市天合新材料科技有限公司 | Novel agricultural liquid film |
| CN106883552A (en) * | 2017-02-22 | 2017-06-23 | 李峰 | A kind of Environmental-protection agricultural soil face getting fat water conservation liquid-state mulch film and preparation method thereof |
| CN106866307A (en) * | 2017-03-03 | 2017-06-20 | 王书秀 | A kind of liquid-state mulch film constituted as major ingredient with feces of livestock and poultry and preparation method |
| US11332413B2 (en) | 2018-03-28 | 2022-05-17 | Lg Chem, Ltd. | Controlled-release fertilizers |
| CN111712476A (en) * | 2018-03-28 | 2020-09-25 | 株式会社Lg化学 | Controlled release fertilizer |
| JP2021505514A (en) * | 2018-03-28 | 2021-02-18 | エルジー・ケム・リミテッド | Elution controlled fertilizer |
| CN111712476B (en) * | 2018-03-28 | 2023-03-10 | 株式会社Lg化学 | Controlled release fertilizer |
| JP7005098B2 (en) | 2018-03-28 | 2022-01-21 | エルジー・ケム・リミテッド | Elution controlled fertilizer |
| CN111233560A (en) * | 2020-03-24 | 2020-06-05 | 四川科施福农业科技有限公司 | Fertilizer loss control agent and preparation method thereof, energy-gathering loss control fertilizer and preparation method thereof |
| CN112521219A (en) * | 2020-12-24 | 2021-03-19 | 仲恺农业工程学院 | Biomass-based pesticide-fertilizer liquid mulching film and preparation method and application thereof |
| CN114437730A (en) * | 2021-12-31 | 2022-05-06 | 中北大学 | Urea-based biodegradable high-molecular sand-fixing material with nutrient sustained and controlled release and water absorption and retention functions |
| CN114437730B (en) * | 2021-12-31 | 2024-01-30 | 中北大学 | Urea aldehyde group biodegradable polymer sand-fixing material with functions of nutrient slow and controlled release, water absorption and water retention |
| CN114892444A (en) * | 2022-05-07 | 2022-08-12 | 南京林业大学 | Paper-based mulching film and preparation method and application thereof |
| CN115119678A (en) * | 2022-06-27 | 2022-09-30 | 榆林市林业科学研究所 | Pinus sylvestris forestation method |
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