CN101134898A - Degradable alkaline land modifying agent and method for making same - Google Patents
Degradable alkaline land modifying agent and method for making same Download PDFInfo
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- CN101134898A CN101134898A CNA2006100171477A CN200610017147A CN101134898A CN 101134898 A CN101134898 A CN 101134898A CN A2006100171477 A CNA2006100171477 A CN A2006100171477A CN 200610017147 A CN200610017147 A CN 200610017147A CN 101134898 A CN101134898 A CN 101134898A
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Abstract
The present invention relates to one kind of degradable saline alkali soil improver and its preparation process. The saline alkali soil improver is emulsion of the mixture of CO2 copolymer or polylactic acid, plant auxin and polyvinyl acetate and with solid content of 30-40 %. It is prepared through crushing CO2 copolymer or polylactic acid at temperature of -5 deg.c to 30 deg.c in a crusher to obtain 10-40 micron particle, adding plant auxin in certain amount, and mixing with 10-40 % concentration water solution of polyvinyl acetate to form the emulsion of 30-40 % concentration. It is sprayed to the root of plant in saline alkali soil to form degradable film, which is degraded to release plant auxin and nutrients, improve the pH value of soil, reduce the separation of salts and promote plant growth. It produces no environmental pollution.
Description
Technical field
The present invention relates to a kind of degradable alkaline land modifying agent and preparation method thereof.
Background technology
We know that the principal feature in saltings is to contain more water-soluble salt or alkaline matter.Because salinity is many, alkalescence is big, makes agron suffer leaching loss, and Soil structure is damaged, show as when wet glutinous, hard when doing, the normal adularescent salinity accumulation of soil table, ventilation and permeable bad, serious meeting causes plant wilt, poisoning and mashed root death, so must carry out soil improvement to the saltings.The principle of improvement saline-alkali soil is will be in salt discharge, in salt, anti-salt, positive fertilizing soil.
China's the fifties is to the sixties, and beginning to carry out marine solonchak kind rice improved test and drawing agricultural measures such as Huang is irrigated, the kind rice changes alkali is main improvement work; The seventies China improvement of salt and alkaline land enters engineering measure and combines with agricultural measures; The comprehensive regulation combines the stage with comprehensive development.In general, it mainly is based on hydro project that the salt affected soil of China is administered technology, and big hydraulic pressure salt is pressed alkali, the plantation saline alkali tolerant plant, and such improvement technology must have the substantial contribution input to guarantee, and be prerequisite with the broad irrigation.This is very effective in the abundant area of water resources.But, promote very difficulty in the area that water resources lacks.Introduce " phosphogypsum " and administer the saltings, have high input, produce little effect.At present, water resources day is becoming tight, and especially very wide the Northwest, saltings promotes very difficulty.Be badly in need of the water-saving alkaline land improving new technology of development.This type of invention was also arranged in the past, mainly was at plant roots suit plastics bag as CN87100539, added fertilizer and airway then in the bag, last face of land covering with plastic film, and it operates some complexity, and can produce plastic refuse.At present, the report that does not also have degradable alkaline land modifying agent and preparation method thereof on the document.
Summary of the invention
Technical problem to be solved by this invention is to overcome above-mentioned the deficiencies in the prior art, it is convenient to provide that a kind of production cost is low, operation is implemented, make full use of the biodegradation character of carbon dioxide copolymer and poly(lactic acid), no plastic refuse pollution problem is preserved moisture, the degradable alkaline land modifying agent of high insulating effect and preparation method thereof.
The technical scheme that the present invention solves the problems of the technologies described above employing is: a kind of degradable alkaline land modifying agent, it is characterized in that: it is the aqueous solution of carbon dioxide copolymer or poly(lactic acid), plant hormone, Vinyl Acetate Copolymer ester blend, solids content is 30-40%, wherein polyvinyl acetate (PVA) is 30-70% in the solids component, carbon dioxide copolymer or poly(lactic acid) are 70-30%, and plant hormone is 1-2%.
The preparation method of above-mentioned degradable alkaline land modifying agent is among the present invention: at first carbon dioxide copolymer or poly(lactic acid) are pulverized under-5--30 ℃ condition by pulverizer, obtain the particulate of 10-40 μ m particle diameter, add an amount of plant hormone again, be the Vinyl Acetate Copolymer aqueous solution of ester blend of 10-40% with concentration then, finally form the emulsion that solids content is 30%-40%.
When the present invention uses, be sprayed at plant roots in the saltings by the mode that sprays, form one deck degradable film in plant roots, reduce water consumption greatly, the effect that formed degradable film can play and preserve moisture, be incubated reduces separating out of salinity simultaneously.The present invention is used for alkaline land improvement, can improve percentage of germination and the surviving rate of plant greatly.The present invention is according to the film forming method of the aqueous solution of spraying carbon dioxide copolymer or poly(lactic acid) and Vinyl Acetate Copolymer and plant hormone of passing in principle of water saving, improve the potential of hydrogen of soil, implement simple, begin degraded after about 20 days, plant hormone will progressively discharge, make the nutrient can sustainable supply, can not produce environmental pollution after degraded is finished.
Embodiment
The invention will be further described below in conjunction with embodiment: the present invention is a kind of degradable alkaline land modifying agent, it is the aqueous solution of carbon dioxide copolymer or poly(lactic acid), plant hormone, Vinyl Acetate Copolymer ester blend, solids content is 30%-40%, wherein polyvinyl acetate (PVA) is 30-70% in the solids component, carbon dioxide copolymer or poly(lactic acid) particulate are 70-30%, and plant hormone is 1-2%.Manufacturing of above-mentioned carbon dioxide copolymer and poly(lactic acid), Vinyl Acetate Copolymer aqueous solution of ester belongs to prior art.Plant hormone (containing element K, Ca, P, N etc.) is commercial existing procucts, and the selection of its composition and consumption is determined according to the growth hormone (K, Ca, P, N etc.) of required short its root growth of difference of plant varieties different on the saltings.
The preparation method of above-mentioned degradable alkaline land modifying agent is among the present invention: at first by pulverizer carbon dioxide copolymer or poly(lactic acid) are pulverized, pulverizer will be worked under-5--30 ℃ temperature environment, simultaneously soil testing is carried out in the saltings of needs improvement, understand the origin cause of formation in saltings, determining needs the plant of plantation and those plant hormones should be provided, then the mode of an amount of growth hormone that can promote plant root growth with blend joined in carbon dioxide copolymer or the poly(lactic acid) particulate, at last, be the Vinyl Acetate Copolymer aqueous solution of ester blend of 10-40% again with concentration, forming solids content is the emulsion of 30%-40%.During use, be sprayed at plant roots in the saltings by the mode that sprays, according to the difference of plant, form a diameter 20-100cm, the film of thickness 0.2-0.5mm can keep the moisture of soil to reduce evaporation and reduce decrease of temperature speed, reduces separating out of salinity simultaneously.About 20 days, carbon dioxide copolymer or poly(lactic acid) begin degraded, in degraded, because polyvinyl acetate (PVA) itself can present slightly acidic after hydrolysis, and the degraded product carbonic acid gas of carbon dioxide copolymer or poly(lactic acid) also can generate weak acid in water, therefore under the covering of film, the environment that can form little acid reduces soil alkalinity, improve Soil structure, simultaneously, plant hormone in the middle of the blend can progressively discharge, and continuing provides nutrition to root system, improves the surviving rate of plant greatly.The invention process method is simple, and can not produce objectionable impurities and contaminate environment.
Embodiment 1:
A kind of degradable alkaline land modifying agent and preparation method thereof, it is the aqueous solution of carbon dioxide copolymer, plant hormone, Vinyl Acetate Copolymer ester blend, solids content is 40%, and wherein the ratio of polyvinyl acetate (PVA) and carbon dioxide copolymer, plant hormone is 30: 70: 2.The molecular weight of carbon dioxide copolymer is between 2.5-5 ten thousand, pulverize under-15 ℃ condition through pulverizer, form the Powdered goods of 10-40 μ m particle diameter, then with plant hormone and Vinyl Acetate Copolymer aqueous solution of ester, by the mode blend of stirring, it is stand-by to form uniform emulsion.The concrete use of plant hormone will be determined according to the growth hormone (K, Ca, P, N etc.) of required short its root growth of difference of plant varieties different on the saltings.The test that the present invention is applied to start seedlings on the saltings, under envrionment temperature 18-25 ℃ condition, root sapling sprays above-mentioned modifying agent, form the film of about diameter 80cm thickness 0.3mm, test root soil temperature is compared with the adjacent sapling of not spraying and has on average been improved 2 ℃ after 10 days, and soil moisture content is under the situation with even depth, then improved about 20%, observe after 5 months, the sapling surviving rate of handling through root 100%, and less than about 30% of processing.Initial stage soil detected result PH=11 is alkalescence, is 7.8 after 5 months.
Embodiment 2:
A kind of degradable alkaline land modifying agent and preparation method thereof, it is the blend of carbon dioxide copolymer, plant hormone, Vinyl Acetate Copolymer aqueous solution of ester, solids content is 30%, and the ratio of polyvinyl acetate (PVA) and carbon dioxide copolymer, plant hormone is 50: 50: 2.The molecular weight of carbon dioxide copolymer is between 2.5-5 ten thousand, pulverize under-15 ℃ condition by pulverizer, form the Powdered goods of 10-40 μ m particle diameter, then plant hormone and carbon dioxide copolymer particulate are added the Vinyl Acetate Copolymer aqueous solution of ester, by the mode blend of stirring, it is stand-by to form uniform emulsion.The test that the present invention is applied to start seedlings on the saltings, under envrionment temperature 18-25 ℃ condition, root sapling sprays above-mentioned flushing liquor, form the film of about diameter 80cm thickness 0.3mm, test root soil temperature is compared with the adjacent sapling of not spraying and has on average been improved 1 ℃ after 10 days, and soil moisture content is under the situation with even depth, then improved about 30%, observe after 5 months, the sapling surviving rate of handling through root 80%, and less than about 30% of processing.Initial stage soil detected result PH=11 is alkalescence, is 8.6 after 5 months.
Embodiment 3:
A kind of degradable alkaline land modifying agent and preparation method thereof, it is the blend of carbon dioxide copolymer, plant hormone, Vinyl Acetate Copolymer aqueous solution of ester, solids content is 38%, and wherein the ratio of polyvinyl acetate (PVA) and carbon dioxide copolymer, plant hormone is 70: 30: 2.The molecular weight of carbon dioxide copolymer is between 2.5-5 ten thousand, pulverize under-15 ℃ condition by pulverizer, form the Powdered goods of 10-40 μ m particle diameter, then plant hormone and carbon dioxide copolymer particulate are added the Vinyl Acetate Copolymer aqueous solution of ester, by the mode blend of stirring, it is stand-by to form uniform emulsion.The test that the present invention is applied to start seedlings on the saltings, under envrionment temperature 18-25 ℃ condition, root sapling sprays above-mentioned modifying agent, form the film of about diameter 90cm thickness 0.4mm, test root soil temperature is compared with the adjacent sapling of not spraying and has on average been improved 3 ℃ after 10 days, and soil moisture content is under the situation with even depth, then improved about 10%, observe after 5 months, the sapling surviving rate of handling through root 100%, and less than about 30% of processing.Initial stage soil detected result PH=11 is alkalescence, is 7.6 after 5 months.
Embodiment 4:
A kind of degradable alkaline land modifying agent and preparation method thereof, it is the aqueous solution blend of poly(lactic acid), plant hormone, polyvinyl acetate (PVA), and solids content is 40%, and wherein the ratio of polyvinyl acetate (PVA) and poly(lactic acid), plant hormone is 30: 70: 2.The molecular weight of poly(lactic acid) is between 2.5-5 ten thousand, pulverize under-15 ℃ condition through pulverizer, form the Powdered goods of 10-40 μ m particle diameter, then with plant hormone and Vinyl Acetate Copolymer aqueous solution of ester, by the mode blend of stirring, it is stand-by to form uniform emulsion.The concrete use of plant hormone will be determined according to the growth hormone (K, Ca, P, N etc.) of required short its root growth of difference of plant varieties different on the saltings.The test that the present invention is applied to start seedlings on the saltings, under envrionment temperature 18-25 ℃ condition, root sapling sprays above-mentioned modifying agent, form the film of about diameter 80cm thickness 0.3mm, test root soil temperature is compared with the adjacent sapling of not spraying and has on average been improved 2 ℃ after 10 days, and soil moisture content is under the situation with even depth, then improved about 20%, observe after 5 months, the sapling surviving rate of handling through root 100%, and less than about 30% of processing.Initial stage soil detected result PH=11 is alkalescence, is 7.8 after 5 months.
Embodiment 5:
A kind of degradable alkaline land modifying agent and preparation method thereof, it is the blend of poly(lactic acid), plant hormone, Vinyl Acetate Copolymer aqueous solution of ester, and solids content is 30%, and the ratio of polyvinyl acetate (PVA) and poly(lactic acid), plant hormone is 50: 50: 2.The molecular weight of poly(lactic acid) is between 2.5-5 ten thousand, pulverize under-15 ℃ condition by pulverizer, form the Powdered goods of 10-40 μ m particle diameter, then plant hormone and poly(lactic acid) particulate are added the Vinyl Acetate Copolymer aqueous solution of ester, by the mode blend of stirring, it is stand-by to form uniform emulsion.The test that the present invention is applied to start seedlings on the saltings, under envrionment temperature 18-25 ℃ condition, root sapling sprays above-mentioned flushing liquor, form the film of about diameter 80cm thickness 0.3mm, test root soil temperature is compared with the adjacent sapling of not spraying and has on average been improved 1 ℃ after 10 days, and soil moisture content is under the situation with even depth, then improved about 30%, observe after 5 months, the sapling surviving rate of handling through root 80%, and less than about 30% of processing.Initial stage soil detected result PH=11 is alkalescence, is 8.6 after 5 months.
Embodiment 6:
A kind of degradable alkaline land modifying agent and preparation method thereof, it is the blend of poly(lactic acid), plant hormone, Vinyl Acetate Copolymer aqueous solution of ester, and solids content is 38%, and wherein the ratio of polyvinyl acetate (PVA) and poly(lactic acid), plant hormone is 70: 30: 2.The molecular weight of poly(lactic acid) is between 2.5-5 ten thousand, pulverize under-15 ℃ condition by pulverizer, form the Powdered goods of 10-40 μ m particle diameter, then plant hormone and poly(lactic acid) particulate are added the Vinyl Acetate Copolymer aqueous solution of ester, by the mode blend of stirring, it is stand-by to form uniform emulsion.The test that the present invention is applied to start seedlings on the saltings, under envrionment temperature 18-25 ℃ condition, root sapling sprays above-mentioned modifying agent, form the film of about diameter 90cm thickness 0.4mm, test root soil temperature is compared with the adjacent sapling of not spraying and has on average been improved 3 ℃ after 10 days, and soil moisture content is under the situation with even depth, then improved about 10%, observe after 5 months, the sapling surviving rate of handling through root 100%, and less than about 30% of processing.Initial stage soil detected result PH=11 is alkalescence, is 7.6 after 5 months.
Claims (2)
1. degradable alkaline land modifying agent, it is characterized in that: it is the aqueous solution of carbon dioxide copolymer or poly(lactic acid), plant hormone, Vinyl Acetate Copolymer ester blend, solids content 30%-40%, wherein polyvinyl acetate (PVA) is 30-70% in the solids component, carbon dioxide copolymer or poly(lactic acid) are 70-30%, and plant hormone is 1-2%.
2. preparation method of degradable alkaline land modifying agent according to claim 1, it is characterized in that: at first carbon dioxide copolymer or poly(lactic acid) are pulverized under-5--30 ℃ condition by pulverizer, obtain the particulate of 10-40 μ m particle diameter, add an amount of plant hormone again, be the Vinyl Acetate Copolymer aqueous solution of ester blend of 10-40% with concentration then, finally form the emulsion that solids content is 30%-40%.
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| CNA2006100171477A CN101134898A (en) | 2006-08-31 | 2006-08-31 | Degradable alkaline land modifying agent and method for making same |
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| CNA2006100171477A CN101134898A (en) | 2006-08-31 | 2006-08-31 | Degradable alkaline land modifying agent and method for making same |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102239758A (en) * | 2010-05-11 | 2011-11-16 | 上海市农业科学院 | Biodegradation type method for remedying saline-alkali soil |
| CN103937506A (en) * | 2014-03-06 | 2014-07-23 | 冯超 | Degradable soil modifier |
| CN104817413A (en) * | 2015-04-14 | 2015-08-05 | 中山大学 | Environment-friendly water-soil conserving soil modifier formula |
| CN105219395A (en) * | 2015-09-12 | 2016-01-06 | 安徽养禾天生物科技有限公司 | A kind of modifying agent of using modified saltings |
| CN106190134A (en) * | 2016-06-30 | 2016-12-07 | 山东胜伟园林科技有限公司 | A kind of anti-salt alkali composition containing Rhizoma Dioscoreae extract and preparation method thereof |
| CN108559520A (en) * | 2018-05-25 | 2018-09-21 | 四川川能环保科技有限公司 | It is a kind of to be used to improve composition of salt affected soil and preparation method thereof |
| CN110387246A (en) * | 2019-07-19 | 2019-10-29 | 陕西科技大学 | A kind of polylactic resin covering material and its application method for inhibiting moisture evaporation for Arid&semi-arid area |
-
2006
- 2006-08-31 CN CNA2006100171477A patent/CN101134898A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102239758A (en) * | 2010-05-11 | 2011-11-16 | 上海市农业科学院 | Biodegradation type method for remedying saline-alkali soil |
| CN102239758B (en) * | 2010-05-11 | 2014-12-03 | 上海市农业科学院 | Biodegradation type method for remedying saline-alkali soil |
| CN103937506A (en) * | 2014-03-06 | 2014-07-23 | 冯超 | Degradable soil modifier |
| CN104817413A (en) * | 2015-04-14 | 2015-08-05 | 中山大学 | Environment-friendly water-soil conserving soil modifier formula |
| CN105219395A (en) * | 2015-09-12 | 2016-01-06 | 安徽养禾天生物科技有限公司 | A kind of modifying agent of using modified saltings |
| CN106190134A (en) * | 2016-06-30 | 2016-12-07 | 山东胜伟园林科技有限公司 | A kind of anti-salt alkali composition containing Rhizoma Dioscoreae extract and preparation method thereof |
| CN108559520A (en) * | 2018-05-25 | 2018-09-21 | 四川川能环保科技有限公司 | It is a kind of to be used to improve composition of salt affected soil and preparation method thereof |
| CN110387246A (en) * | 2019-07-19 | 2019-10-29 | 陕西科技大学 | A kind of polylactic resin covering material and its application method for inhibiting moisture evaporation for Arid&semi-arid area |
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Application publication date: 20080305 |