CN105001876B - A kind of saline-alkali soil conditioner and its special microcapsule-type organic acid sustained release preparation - Google Patents

A kind of saline-alkali soil conditioner and its special microcapsule-type organic acid sustained release preparation Download PDF

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CN105001876B
CN105001876B CN201510428476.XA CN201510428476A CN105001876B CN 105001876 B CN105001876 B CN 105001876B CN 201510428476 A CN201510428476 A CN 201510428476A CN 105001876 B CN105001876 B CN 105001876B
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acid
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calcium
sustained release
organic acid
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CN105001876A (en
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陶树明
刘建军
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Beijing Zhong tillage oasis ecological science and Technology Co., Ltd.
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BEIJING BOYICHENG SCIENCE & TECHNOLOGY Co Ltd
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    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K17/00Soil-conditioning materials or soil-stabilising materials
    • C09K17/40Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
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    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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    • C09K17/00Soil-conditioning materials or soil-stabilising materials
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    • C09K17/00Soil-conditioning materials or soil-stabilising materials
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Abstract

The invention discloses a kind of saline-alkali soil conditioner and its special microcapsule-type organic acid sustained release preparation.Microcapsule-type organic acid sustained release preparation of the present invention, in terms of parts by weight, it is made up of following components:100 parts of water, 1~80 part of organic acid, 10~50 parts of comonomers, 0.2~10 part of emulsifying agent, 100~500 parts of organic solvents and 0.05~5 part of initiator.Saline-alkali soil conditioner of the present invention, in terms of parts by weight, it is made up of 1~30 part of organic acid sustained release preparation and 60~90 parts of calcium activated.With it is existing applied to saline-alkali soil conditioner compared with; saline-alkali soil conditioner of the present invention is while calcium ion is provided; organic acidic material can be sustained, the effective soil conditioner that mitigates applies the salt damage caused, and significantly improves the release time of organic acid; act on the whole breeding time of crop; effective to mitigate the soil accumulation of salt in the surface soil, the continuation injury that the accumulation of salt in the surface soil is caused to crop, cover crop is not done harm in whole growth cycle by salt damage alkali; crop yield is improved, it is comprehensive to improve alkaline land improving effect.

Description

A kind of saline-alkali soil conditioner and its special microcapsule-type organic acid sustained release preparation
Technical field
Have the present invention relates to a kind of soil conditioner, more particularly to a kind of saline-alkali soil conditioner and its special microcapsule-type Machine acid sustained release preparation.
Background technology
Salt-soda soil or salinized soil are acted on by salt and alkali component in the soil body, including various solonchak and alkaline earth and it is other not With degree salinization and the general designation (Dong Hezhong, 2010) of all kinds soil of alkalization.When water-soluble in upper soll layer or subsurface stratum The cumulant of salt more than 1~2g/kg or alkalization of soils layer basicity more than 5% when, soil just belongs to salt-soda soil scope. Salt-soda soil contains solonchak, alkaline earth and different degrees of salinization and alkali-affected soil (Yang Jingsong, 2005).
China's saline-alkali soil distribution is extremely wide, mainly includes east beach saline land, the salinized soil of Huang-Huai-Hai plain, northeast Song-Nen plain saline-alkaline, the domestic land solonchak of half-desert, the unconcerned border solonchak of Qinghai Xinjiang extreme drought.Organized according to the Ministry of Agriculture Secondary national soil survey information statistics, on the premise of coastal tidal is not included, China's salinized soil area is 34,870,000 hm2。 Salt-soda soil is the topmost middle-and-low-yielding fields soil types of China, these saline alkali land resources of rational exploitation and utilization, to ensureing state of China Family grain security, promote agricultural sustainable development, improve the ecological environment and thrust zone coordinated development of the economy and society have weight Want meaning.
Current reclamation of salinep-alkali soil measure mainly has physically improved, chemical modifying, hydraulic engineering to improve, and biological modification etc. is several big Class.Chemical modifying mainly adds all kinds of chemical improvement agents, natural ore soil resource (such as zeolite, peat in alkaline land soil Deng), agricultural and trade waste etc., with occurring complex reaction into salt ion in soil, it is discharged with irrigation water, so as to reach Reduce the purpose of soil salt.Chinese patent 00105747 (CN1118536C) is administered using the aqueous dispersions of poly- maleic acid Salt affected soil;Chinese patent 200810160178.7 (CN101417904) is sub- using weathered coal, MAP, urea, sulfuric acid Iron, zinc sulfate, manganese sulfate, calcareous adhesive, dust technology etc. prepare modifying agent, can topdress and use as base manure;Chinese patent 200910072634 (CN101624523) for alum as saline-alkali soil modifying agent cost it is high the problem of, using aluminum sulfate, sulfuric acid Ferrous ammonium, magnesium sulfate mix preparation, the saline and alkaline soil of improvement;Chinese patent 201110235222 (CN102352258) uses reed Stalk and gypsum, clay, flyash etc. mix blocking, particle modifying agent are obtained after pulverizing and sieving, applied to degraded coastal saline-alkali The improvement of wetland;Chinese patent 201110347412 (CN102517030) discloses the salt affected soil for using the agent that added water with pulvis Modifying agent, pulvis mainly includes machine matter, plant Hypha protein powder, calcium activated, aluminum sulfate etc. and bacteria agent, and aqua is main Include the aqueous solution of the organic acids such as citric acid, fulvic acid, it is comprehensive to improve improved effect;Chinese patent 201210005177 (CN102559169) it is made up of acetic acid, calcium nitrate and water for the saline-alkali soil conditioner with sodic soils;Chinese patent 201210203263 (CN102766468) using poly- maleic acid, neopelex, poly-aspartate, malic acid, Oxalic acid, ammonium sulfate etc. are mixed, and drip irrigation is used.Chinese patent 201210589939.7 (CN102994096) use desulfurated plaster for Primary raw material, prepares modifying agent.Chinese patent 201310080579 (CN103131424) discloses a kind of including ardealite, wind Change coal, the sawdust that becomes thoroughly decomposed, fulvic acid, the vinasse that become thoroughly decomposed, phosphorus ore slag, the soil conditioner of root-growing agent, it uses the discarded object of industrial or agricultural Composition, cost is relatively low.Chinese patent 201310239784 (CN103275731) is disclosed by charcoal, ardealite, humic acid The modifying agent that ammonium, urea and citric acid are made, can reduce use cost.
From above-mentioned disclosed patent, main saline-alkali soil conditioner can substantially be divided into calcium preparation such as desulfurization Gypsum, ardealite, calcium superphosphate etc.;Organic acid substance is as along succinic acid (polymer), acetic acid, malic acid, oxalic acid, humic acid Deng;It is equipped with bacteria agent, and various types of organic matters etc. simultaneously to integrate reduction soil alkali evil, increases soil fertility, rise To the effect for administering saline and alkaline soil.
Simultaneously we have found that, although chemicals, bacteria agent, the species such as organic matter is various, but its application method is more To be disposably manured into soil simultaneously, although can in a short time play a part of neutralizing alkaline earth reduction alkalization of soils degree, but can The quick increase of salt ionic concentration is caused, the generation of salt damage is aggravated, crop seed occurs and do not sprout, be short of seedling, the phenomenon such as burn seedlings.Together When, because crop growth period is longer, in the presence of the factors such as drought, the soil accumulation of salt in the surface soil, accumulation of salt in the surface soil phenomenon persistently occur, sternly The growth of crop middle and later periods is have impact on again, detrimental effects are caused to crop yield, cause alkaline land improving effect not good, improves cost High, application is particularly thorny.
How to change salt content in existing saline-alkali soil conditioner formulation, reduction application process, extend its action time, The accumulation of salt in the surface soil in crop cycle is taken into full account, accumulation of salt in the surface soil phenomenon is the important research direction of saline-alkali soil conditioner.
The content of the invention
, should it is an object of the invention to provide a kind of saline-alkali soil conditioner and its special microcapsule-type organic acid sustained release preparation Saline-alkali soil conditioner is obtained by microcapsule-type organic acid sustained release preparation with active calcium preparation mixing granulation, provide calcium activated from While sub-, organic acid can be slowly discharged, so that effectively extend salt resistance alkali action time, the hair of reduction alkali evil and salt damage It is raw.
A kind of microcapsule-type organic acid sustained release preparation that the present invention is provided, in terms of parts by weight, it is made up of following components: 100 parts of water, 1~80 part of organic acid, 10~50 parts of comonomers, 0.2~10 part of emulsifying agent, 100~500 parts of organic solvents and 0.05~5 part of initiator.
Above-mentioned microcapsule-type organic acid sustained release preparation can be obtained after above-mentioned each component microencapsulation, specifically can inverted breast Liquid polymerization is obtained:The aqueous solution (including organic acid) of water soluble comonomers under intense agitation with the presence of emulsifying agent It is distributed in oil phase (organic solvent), forms " Water-In-Oil " type emulsion, then in the presence of initiator, comonomer triggers poly- Close, formed using organic acid be the capsule heart, polymer as the sustained release preparation of the microcapsule-type of cyst wall, can slowly discharge organic acid.
Above-mentioned microcapsule-type organic acid sustained release preparation specifically can be by following 1) -3) any of be made:
1) 100 parts of water, 25 parts of organic acids, 30 parts of comonomers, 5 parts of emulsifying agents, 150 parts of organic solvents and 0.5~1 part draw Send out agent;
2) 100 parts of water, 25 parts of organic acids, 30 parts of comonomers, 5 parts of emulsifying agents, 150 parts of organic solvents and 0.5 part of initiation Agent;
3) 100 parts of water, 25 parts of organic acids, 30 parts of comonomers, 5 parts of emulsifying agents, 150 parts of organic solvents and 1 part of initiator.
In above-mentioned microcapsule-type organic acid sustained release preparation, the organic acid can be following organic acids and following organic acids At least one of salt:Formic acid, acetic acid, propionic acid, butyric acid, oxalic acid, lactic acid, sorbic acid, benzoic acid, malic acid, tartaric acid, lemon Acid, salicylic acid, caffeic acid, citric acid, ascorbic acid, butanedioic acid, palmitic acid, linoleic acid, hexenoic acid, indolebutyric acid, indoles second Acid, methyl α-naphthyl acetate, forulic acid, abscisic acid, kinetin, fulvic acid, humic acid, humic acid, fulvic acid, maleic acid, anti-butylene Diacid, L-TARTARIC ACID, pyrophosphoric acid, amino acid;The salt can be sylvite, sodium salt or calcium salt;Organic acid of the present invention concretely second Acid and malic acid (1:1.5), citric acid and salicylic acid (1:1.5), oxalic acid and citric acid (1:1.5).
In above-mentioned microcapsule-type organic acid sustained release preparation, the comonomer can be acrylic acid, methacrylic acid, propylene Acid amide, PAA, 2- MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chlorides, diallyldimethylammonium chloride, acryloyl group lose Water sorbierite single-hard ester acid ester, acrylamide, Methacrylamide, NIPA, N hydroxymethyl acrylamide and At least one of N, N- methylene-bisacrylamide.
In above-mentioned microcapsule-type organic acid sustained release preparation, the emulsifying agent can be sorbitan fatty acid ester (SPAN- 20th, SPAN-60, SPAN-80, SPAN-85 etc.), polyoxyethylene polyols carboxylate (Tween20, Tween40, Tween60 Deng), glycol fatty acid ester, methyl glycol fatty acid ester, propylene glycol monostearate, glyceryl monostearate, diethylene glycol fat Fat acid esters, diethylene glycol list cinnamate, polyoxypropylene stearate, NPE (agriculture breast 100,110,120, 130th, 140 etc.), Ben-zylphenol Polyoxyethyl Ether (agriculture breast 300,400 etc.), phenethyl phenol polyethenoxy ether (agriculture breast 500, No. 600) With phenethyl phenol polyethenoxy ether (at least one of agriculture breast 1601,1602, peaceful newborn 33,34 etc.).
In above-mentioned microcapsule-type organic acid sustained release preparation, the organic solvent can be hexane, hexamethylene, heptane, different pungent Alkane, petroleum ether, toluene, dimethylbenzene, white oil, long chain fatty acids, fatty glyceride, turpentine-based vegetable oil, methyl oleate, epoxy Change at least one of vegetable oil, plants essential oil and biodiesel.
In above-mentioned microcapsule-type organic acid sustained release preparation, the initiator can be ammonium persulfate, potassium peroxydisulfate, peroxidating At least one of benzoyl, dilauroyl peroxide, azodiisobutyronitrile, ABVN and tetramethylethylenediamine.
The preparation method for the microcapsule-type organic acid sustained release preparation that the present invention is provided, comprises the following steps:
(1) in terms of parts by weight, water, 1~80 part of organic acid, 10~50 parts of the comonomer and 0.2 of 100 parts of mixing ~10 parts of emulsifying agents, aqueous phase is obtained after stirring;
(2) in the aqueous phase that step (1) is obtained, profit is obtained after adding 100~500 parts of organic solvent, shear agitation Mixed phase;
(3) under nitrogen protection, in the oil mixing with water phase that step (2) is obtained, 0.05~5 part of initiator is added, through poly- Close reaction, you can obtain the organic acid sustained release preparation.
In above-mentioned preparation method, step (2), the speed of the shearing can be 3000~50000rpm, concretely 4000~10000rpm, 4000rpm or 10000rpm;Time can be 10~40min, concretely 20~30min, 20min or 30min。
In above-mentioned preparation method, step (3), the temperature of the polymerisation can be 40~90 DEG C, concretely 60 DEG C; Time can be 0.5~24 hour, concretely 4 hours.
Above-mentioned organic acid sustained release prepare as or application in preparing saline-alkali land soil conditioner, also in the guarantor of the present invention In the range of shield.
Invention further provides a kind of saline-alkali soil conditioner, in terms of parts by weight, it is above-mentioned organic by 1~30 part Sour sustained release preparation and 60~90 parts of calcium activated composition.
Any of above-mentioned saline-alkali soil conditioner concretely following 1) -6):
1) it is made up of 12~20 parts of organic acid supplement and 80~88 parts of calcium activated;
2) it is made up of 12~15 parts of organic acid supplement and 85~88 parts of calcium activated;
3) it is made up of 15~20 parts of organic acid supplement and 80~85 parts of calcium activated;
4) it is made up of 12 parts of organic acid supplement and 88 parts of calcium activated;
5) it is made up of 15 parts of organic acid supplement and 85 parts of calcium activated;
6) it is made up of 20 parts of organic acid supplement and 80 parts of calcium activated.
In above-mentioned saline-alkali soil conditioner, the calcium activated be calcium acetate, calcium propionate, EDTA calcium, calcium chloride, calcium nitrate, Calcium sulfate, calcium sulfate hydrate, calcium superphosphate, calcium and magnesium phosphorus, calcium citrate, calcium gluconae, lactic acid calcium gluconae and amino At least one of sour calcium, concretely calcium acetate, calcium propionate, EDTA calcium, calcium chloride, calcium nitrate, calcium sulfate, calcium sulfate hydration 4~6 kinds in thing, calcium superphosphate, calcium and magnesium phosphorus, calcium citrate, calcium gluconae, lactic acid calcium gluconae and amino acid calcium, 4~ 5 kinds, 5~6 kinds, 4 kinds, 5 kinds or 6 kinds, such as 1) EDTA calcium, calcium chloride, calcium nitrate, calcium sulfate, calcium and magnesium phosphorus and calcium citrate (3: 4:4:4:1:1), 2) EDTA calcium, calcium chloride, calcium nitrate, calcium superphosphate, amino acid calcium (5:5:5:5:2), 3) EDTA calcium, chlorination Calcium, calcium nitrate, calcium superphosphate (1:1:1:1).
Soil conditioner of the present invention can be sustained organic acid, and slow-release time may act on the whole of crop up to 40 days~70 days It is individual breeding time, effective to mitigate the soil accumulation of salt in the surface soil, the continuation injury that the accumulation of salt in the surface soil is caused to crop, cover crop is in whole growth cycle Do not done harm to by salt damage alkali inside.
Soil conditioner of the present invention improve the paddy rice of salt-soda soil plantation, corn, sorghum, beet, millet, mung bean, oily certain herbaceous plants with big flowers, Application in peanut, jujube tree, matrimony vine or vintage is also within the scope of the present invention.
In above-mentioned application, the salt-soda soil concretely salt-soda soil of Chifeng Linxi County or Jilin Province Baicheng town Lai Xian salt-soda soil.
The present invention has the advantages that:
With it is existing applied to saline-alkali soil conditioner compared with, saline-alkali soil conditioner of the present invention provide calcium ion it is same When, organic acidic material can be sustained, the effective soil conditioner that mitigates applies the salt damage caused, and significantly improves organic acid Release time, act on the whole breeding time of crop, effective to mitigate the soil accumulation of salt in the surface soil, the continuation wound that the accumulation of salt in the surface soil is caused to crop Evil, cover crop is not done harm in whole growth cycle by salt damage alkali, improves crop yield, comprehensive to improve alkaline land improving effect.
Embodiment
Experimental method used in following embodiments is conventional method unless otherwise specified.
Material, reagent used etc., unless otherwise specified, are commercially obtained in following embodiments.
Embodiment 1, preparation sustained release acetic acid, the organic acid supplement and saline-alkali soil conditioner of malic acid
First, sustained release acetic acid, organic acid supplement of malic acid are prepared
Organic acid sustained release preparation is prepared in accordance with the following steps:
(1) in 400mL reactors, weight is firstly added than the water for 100 parts, 10 parts of acetic acid, 15 parts of malic acid, 15 parts of acrylic acid, 15 parts of acrylamide, 5 parts of emulsifying agent SPAN-80 are stirring uniformly to obtain aqueous phase.
(2) in the aqueous phase that step (1) is obtained, oil is obtained after adding 150 parts of hexamethylene, 4000rpm shear agitations 30min Water mixed phase.
(3) under nitrogen protection, in the oil mixing with water phase that step (2) is obtained, 0.5 part of isobutyl of initiator azo two is added Nitrile, heat up 60 degrees Celsius of slow initiated polymerizations, 1000rpm stirring reactions 4 hours, obtains being sustained acetic acid, the height of malic acid Molecular microcapsule sustained release preparation.
2nd, sustained release acetic acid, the saline-alkali soil conditioner of malic acid are prepared
Saline-alkali soil conditioner is prepared in accordance with the following steps:
According to weight ratio, 15 parts of organic acid sustained release preparations, 85 parts of calcium activateds are taken:EDTA calcium, calcium chloride, calcium nitrate, sulfuric acid Calcium, calcium and magnesium phosphorus and calcium citrate (3:4:4:4:1:1) mix, rotary table granulation, obtain being sustained malic acid, the salt affected soil of acetic acid changes Good dose.
The saline-alkali soil conditioner that the present embodiment is prepared is sustained acetic acid, malic acid, and the wherein acetic acid sustained release lasting period reaches By 45 days, the sustained release lasting period of malic acid reached 60 days.
3rd, the improvement of salt affected soil
By above-mentioned saline-alkali soil conditioner be applied to salt affected soil improvement demonstrate, test period be in May, 2014~ In October, 2014, test site is Chifeng Linxi County, and trial crops are corn.The application method of soil conditioner is Spread fertilizer over the fields within two weeks before corn seeding, turn over and level land, soaked field of pouring water.Experimental design and it the results are shown in Table 1.
The action effect of table 1, soil conditioner Inner Mongolia Chifeng City Linxi County salt-soda soil of the present invention and corn
"-" in table 1 represents without any processing.
From result of the test, compared with blank control, the saline and alkaline plot handled using soil conditioner of the present invention, crop Yield, which has, to be obviously improved, and has reached 285kg/667m2, while it can be seen that, whole breeding time of the soil pH value in crop 8.40 or so have been stable in, the generation of the accumulation of salt in the surface soil, the accumulation of salt in the surface soil has effectively been inhibited, improves crop yield.
Embodiment 2, preparation sustained release citric acid, salicylic organic acid supplement and saline-alkali soil conditioner
First, sustained release citric acid, salicylic organic acid supplement are prepared
Organic acid sustained release preparation is prepared in accordance with the following steps:
(1) in 400mL reactors, weight is added than the water for 100 parts, 10 parts of citric acid, 15 parts of salicylic acid, 15 The ammonium acrylate of part, 15 parts of acrylamide, 5 parts of emulsifying agent Tween-60 are stirring uniformly to obtain aqueous phase.
(2) in the aqueous phase that step (1) is obtained, oil is obtained after adding 150 parts of white oil, 10000rpm shear agitations 20min Water mixed phase.
(3) under nitrogen protection, in the oil mixing with water phase that step (2) is obtained, 1 part of initiator ammonium persulfate is added, is risen Warm 60 degrees Celsius of slow initiated polymerizations, 1000rpm stirring reactions 4 hours obtain being sustained citric acid, salicylic macromolecule Microencapsulated Slow preparation.
2nd, sustained release citric acid, salicylic saline-alkali soil conditioner are prepared
Saline-alkali soil conditioner is prepared in accordance with the following steps:
According to weight ratio, 12 parts of organic acid sustained release preparations, 88 parts of calcium activated EDTA calcium, calcium chloride, calcium nitrate, peroxophosphoric acid are taken Calcium, amino acid calcium (5:5:5:5:2), mix, rotary table granulation, obtain sustained release citric acid, salicylic saline-alkali soil conditioner.
The saline-alkali soil conditioner that the present embodiment is prepared is sustained citric acid, salicylic acid, and the sustained release lasting period reaches 50 My god.
3rd, the improvement of salt affected soil
By above-mentioned saline-alkali soil conditioner be applied to salt affected soil improvement demonstrate, test period be in May, 2014~ In October, 2014, test site is Chifeng Linxi County, and trial crops are beet.The application method of soil conditioner is Spread fertilizer over the fields before beet plantation, turn over soaked field of being poured water after leveling land, in case plantation.Experimental design and it the results are shown in Table 2.
Table 2, Chifeng Linxi County of the present invention soil conditioner are to salt-soda soil and the action effect of beet
"-" in table 2 represents without any processing.
From result of the test, the saline and alkaline plot handled using soil conditioner of the present invention, soil pH continuation declines, than Blank control, which has, significantly to be declined, while the plant growth middle and later periods does not have accumulation of salt in the surface soil phenomenon yet, beet crop yield also has It is obviously improved, has reached 3.6t/667m2, increased production 80% compared with blank, effect of increasing production is extremely notable.
Embodiment 3, preparation sustained release oxalic acid, the organic acid supplement and saline-alkali soil conditioner of citric acid
First, sustained release oxalic acid, organic acid supplement of citric acid are prepared
Organic acid sustained release preparation is prepared in accordance with the following steps:
(1) in 400ml reactors, weight is firstly added than the water for 100 parts, 10 parts of oxalic acid, 15 parts of citric acid, 15 parts of methacrylic acid, 15 parts of acrylamide, 3 parts of emulsifying agent Tween-60,2 parts of agriculture breasts 100 are stirring uniformly to obtain water Phase.
(2) profit is obtained after adding 150 parts of white oil, 10000rpm shear agitations 20min in the aqueous phase that step (1) is obtained Mixed phase.
(3) under nitrogen protection, 1 part of initiator ammonium persulfate, heating are added in the oil mixing with water phase that step (2) is obtained 60 degrees Celsius of slow initiated polymerizations, 1000rpm stirring reactions 4 hours can obtain being sustained oxalic acid, the macromolecule of citric acid is micro- Capsule sustained release preparation.
2nd, sustained release oxalic acid, the saline-alkali soil conditioner of citric acid are prepared
Saline-alkali soil conditioner is prepared in accordance with the following steps:
According to weight ratio, 20 parts of organic acid sustained release preparations, 80 parts of calcium activateds are taken:EDTA calcium, calcium chloride, excessively calcium nitrate, phosphorus Sour calcium (1:1:1:1), rotary table granulation, obtains sustained release oxalic acid, the saline-alkali soil conditioner of citric acid.
The saline-alkali soil conditioner that the present embodiment is prepared is sustained oxalic acid, citric acid, wherein, the sustained release lasting period of oxalic acid Reach 50 days, the sustained release lasting period of citric acid reaches 70 days.
3rd, the improvement of salt affected soil
By above-mentioned saline-alkali soil conditioner be applied to salt affected soil improvement demonstrate, test period be in May, 2014~ In October, 2014, test site is Jilin Province Baicheng Zhenlai County, and trial crops are paddy rice.The application method of soil conditioner be Spread fertilizer over the fields before rice transplanting, turn over soaked field of being poured water after leveling land, in case plantation.Experimental design and it the results are shown in Table 3.
Table 3, Jilin Province Baicheng of the present invention Zhenlai County soil conditioner are to salt-soda soil and the action effect of paddy rice
"-" in table 3 represents without any processing.
From result of the test, the saline and alkaline plot handled using soil conditioner of the present invention, with the extension of time, soil PH continuation declines, and in the middle and late growth stage of paddy rice, soil pH is more stable, and cover crop does harm to from salt damage and alkali, makees produce Amount there has also been larger lifting, increase production 153% compared with blank, effect of increasing production is extremely notable.

Claims (8)

1. a kind of microcapsule-type organic acid sustained release preparation, in terms of parts by weight, it is made up of following components:100 parts of water, 1~80 Part organic acid, 10~50 parts of comonomers, 0.2~10 part of emulsifying agent, 100~500 parts of organic solvents and 0.05~5 part of initiation Agent;
The organic acid is at least one of salt of following organic acids and following organic acids:Formic acid, acetic acid, propionic acid, butyric acid, grass Acid, lactic acid, sorbic acid, benzoic acid, malic acid, tartaric acid, citric acid, salicylic acid, caffeic acid, citric acid, ascorbic acid, amber Acid, palmitic acid, linoleic acid, hexenoic acid, indolebutyric acid, heteroauxin, methyl α-naphthyl acetate, forulic acid, abscisic acid, kinetin, fulvic acid, Humic acid, humic acid, fulvic acid, maleic acid, fumaric acid, L-TARTARIC ACID, pyrophosphoric acid, amino acid;The salt is potassium Salt, sodium salt or calcium salt;
The comonomer is acrylic acid, methacrylic acid, acrylic acid ammonia, PAA, 2- methylacryoyloxyethyl front threes Ammonium chloride, diallyldimethylammonium chloride, acryloyl group anhydrous sorbitol single-hard ester acid ester, acrylamide, metering system At least one of acid amides, NIPA, N hydroxymethyl acrylamide and N, N- methylene-bisacrylamide;
Described organic acid sustained release preparation is prepared by the method comprised the following steps:
(1) in terms of parts by weight, water, 1~80 part of organic acid, 10~50 parts of the comonomer and 0.2~10 of 100 parts of mixing Part emulsifying agent, aqueous phase is obtained after stirring;
(2) in the aqueous phase that step (1) is obtained, oil mixing with water is obtained after adding 100~500 parts of organic solvent, shear agitation Phase;
In step (2), the speed of the shearing is 3000~50000rpm, and the time is 10~40min;
(3) under nitrogen protection, in the oil mixing with water phase that step (2) is obtained, 0.05~5 part of initiator is added, it is aggregated anti- Should, you can obtain the organic acid sustained release preparation;
In step (3), the temperature of the polymerisation is 40~90 DEG C;Time is 0.5~24 hour.
2. organic acid sustained release preparation according to claim 1, it is characterised in that:The emulsifying agent is sorbitan fatty Acid esters, polyoxyethylene polyols carboxylate, glycol fatty acid ester, methyl glycol fatty acid ester, propylene glycol monostearate, glycerine Monostearate, diethylene glycol fatty acid ester, diethylene glycol list cinnamate, polyoxypropylene stearate, polyoxyethylene nonyl phenyl second At least one of alkene ether, Ben-zylphenol Polyoxyethyl Ether, phenethyl phenol polyethenoxy ether and phenethyl phenol polyethenoxy ether.
3. organic acid sustained release preparation according to claim 1 or 2, it is characterised in that:The organic solvent is hexane, hexamethylene Alkane, heptane, isooctane, petroleum ether, toluene, dimethylbenzene, white oil, long chain fatty acids, fatty glyceride, turpentine-based vegetable oil, At least one of methyl oleate, epoxidized vegetable oil, plants essential oil and biodiesel.
4. organic acid sustained release preparation according to claim 1 or 2, it is characterised in that:The initiator is ammonium persulfate, mistake In potassium sulfate, benzoyl peroxide, dilauroyl peroxide, azodiisobutyronitrile, ABVN and tetramethylethylenediamine It is at least one.
5. the preparation method of the organic acid sustained release preparation any one of claim 1-4, comprises the following steps:
(1) in terms of parts by weight, water, 1~80 part of organic acid, 10~50 parts of the comonomer and 0.2~10 of 100 parts of mixing Part emulsifying agent, aqueous phase is obtained after stirring;
(2) in the aqueous phase that step (1) is obtained, oil mixing with water is obtained after adding 100~500 parts of organic solvent, shear agitation Phase;
In step (2), the speed of the shearing is 3000~50000rpm, and the time is 10~40min;
(3) under nitrogen protection, in the oil mixing with water phase that step (2) is obtained, 0.05~5 part of initiator is added, it is aggregated anti- Should, you can obtain the organic acid sustained release preparation;
In step (3), the temperature of the polymerisation is 40~90 DEG C;Time is 0.5~24 hour.
6. organic acid sustained release preparation any one of claim 1-4 as or prepare saline-alkali land soil conditioner Using.
7. a kind of saline-alkali soil conditioner, it is characterised in that:In terms of parts by weight, it is any in 1~30 part of claim 1-4 Organic acid sustained release preparation and 60~90 parts of calcium activated composition described in;The calcium activated is calcium acetate, calcium propionate, EDTA Calcium, calcium chloride, calcium nitrate, calcium sulfate, calcium sulfate hydrate, calcium superphosphate, calcium and magnesium phosphorus, calcium citrate, calcium gluconae, lactic acid At least one of calcium gluconae and amino acid calcium.
8. soil conditioner described in claim 7 improve salt-soda soil plantation paddy rice, corn, sorghum, beet, millet, mung bean, Application in oily certain herbaceous plants with big flowers, peanut, jujube tree, the yield of matrimony vine or grape.
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