CN109897642A - A kind of cement calacareous soil modifying agent and its improved process - Google Patents

A kind of cement calacareous soil modifying agent and its improved process Download PDF

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CN109897642A
CN109897642A CN201910269069.7A CN201910269069A CN109897642A CN 109897642 A CN109897642 A CN 109897642A CN 201910269069 A CN201910269069 A CN 201910269069A CN 109897642 A CN109897642 A CN 109897642A
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parts
soil
acid
cement
modifying agent
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秦文斌
杨玲
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Beijing Green Dream Ecological Agriculture Technology Co Ltd
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Beijing Green Dream Ecological Agriculture Technology Co Ltd
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Abstract

The invention discloses a kind of cement calacareous soil modifying agent and its improved process.Calacareous soil modifying agent is made of following raw material: containing carboxylate organic acids, polyacrylamide, ferrous sulfate and Desert Sand;A kind of cement calacareous soil modifying agent of the present invention is suitable for soil calciferous, can be effectively reduced the pH value and total salt quantity of topsoil, improves soil aggregate structure, reduces the soil weight, improves the porosity of soil, enhances soil permeability;It is horizontal to can reach middle high-yield field for the crop of 2-3 after improvement.

Description

A kind of cement calacareous soil modifying agent and its improved process
Technical field
The present invention relates to calacareous soil improving technology field, specifically a kind of cement calacareous soil modifying agent and its For calacareous soil improved process.
Background technique
Calacareous soil refers to the general name containing free carbonic acid calcium soil, contains calcium carbonate or calcium bicarbonate in soil profile Etc. calcareous feature, soil be soil of base saturation, be in alkalescent and alkaline reaction.Due to high concentration free carbonic acid calcium and high pH The influence of value, the soil texture are laid particular stress on, and consolidation, bulk density is big, and permeability is poor.Sticky calacareous soil is often cashed as " mud when wet It is muddy, hard when doing " the characteristics of, soil texture is poor, and soil nutrient availability is low, and microelement validity is low, is unfavorable for crop Growth and development, low output even have no harvest.
Calacareous soil forming process be in due to soil arid, it is semiarid under the conditions of, soil parent material weathering releases The calcium that releases of calcium and plant residue hydrolysis come is not eluted sufficiently, and only in rainy season in the form of calcium bicarbonate to soil Lower layer is mobile, after reaching certain depth.Because humidity reduces, just it is deposited in soil layer as calcium carbonate.It is widely distributed in Arid and semi-arid lands between 10 °~40 ° of north and south latitude, accounts for about the 1/3 of world's land area.In China's calacareous soil point Cloth is extensive, is distributed mainly on North China and the Northwest, the Nei Mongol Plateau east-middle and south, Hulun Buir Western Tibetan Plateau, E Erduo This plateau east, Southeast Daxinganling foot of a hill or mountain Plain and the Xinjiang quasi- basin Ge Er western mountainous areas valley floor.According to China's MAIN SOILS Occurrence type point, the chestnut soil earth (containing chestnut soil, brown soil, sierozem, chernozem) including northern China grassland;It is distributed in me The desert soil series of state, Desert Area, northwest, including desert grey soil, grey-brown desert soil, brown desert soil, takyr soil;It is tender flat to be distributed in northeast pine Former, the Three River Plain the meadow soil;The moisture soil of China the Yellow River wash plain;It is distributed in the green of the Desert Area of Xinjiang and Hexi Corridor Continent soil;And it is distributed in the alpline desert soil on Qiangtang area, Tibet plateau.
For the natural conditions of calacareous soil, soil property and there are problems, and in view of management and use and economic hair The needs of exhibition, targetedly the calacareous soil high to saline and alkaline degree is improved, and to improving the ecological environment, produce are made in raising Amount promotes local peasants and herdsmen's living standard and has great importance.
Soil conditioner is mostly directed to the improvement of salt affected soil and acid soil at present, is all to utilize stone mostly in ingredient The inorganic minerals such as lime stone, potassium feldspar, montmorillonite, oyster shell powder are raw material.The generally existing dosage of such product is big, has a single function, Long-time service be easy to cause soil hardening, reduces soil permeability.Secondary hazards are brought in the presence of to soil environment.It is a large amount of in the market The compound fertilizer products such as microorganism formulation, humic acid material, the amino acid solution of appearance, since calacareous soil contains high ph-values With the calcium carbonate feature of free state, nutrien utilization validity is low, hinders the utilization of fertilizer, often using effect is bad.
Therefore the present invention makes full use of the physicochemical property feature of calacareous soil itself, using carboxylic organic acid soil Deposited in earth calcium carbonate activation, using soil itself repair function improve soil crumb structure, reduce soil pH value and Total salt quantity.The characteristics of being mainly distributed on northwest China and North China according to calacareous soil, adaptation to local conditions proposition are mixed using Desert Sand The modification method of mixed clayey soil not only improves soil, but also the utility value in exploitation desert.
Summary of the invention
To solve the above problems, the object of the present invention is to provide a kind of cement calacareous soil modifying agent and its improvement works Skill.
The present invention to achieve the above object, is achieved through the following technical solutions:
A kind of cement calacareous soil modifying agent, it is characterised in that: in parts by weight, be made of following raw material: Desert Sand 1000-3000 parts, carboxylic organic acid 1-20 parts, 0.1-0.6 parts of polyacrylamide, 20-90 parts of ferrous sulfate;
Wherein the carboxylic organic acid is selected from acetic acid, formic acid, maleic acid-acrylic acid copolymer, citric acid, amino At least one of acid, succinic acid;
Wherein the Desert Sand is the sand grains composition for taking from the partial size 0.2-0.3mm in desert, after crossing 60-80 mesh It obtains;
Wherein the polyacrylamide is selected from anionic polyacrylamide, and surfactant has flocculated effect.
Preferably, in parts by weight, it is made of following raw material: 1000-2000 parts of Desert Sand, carboxylic organic acid 7-15 Part, 0.4-0.6 parts of polyacrylamide, 60-90 parts of ferrous sulfate.
Preferably, in parts by weight, it is made of following raw material: 2000-3000 parts of Desert Sand, carboxylic organic acid 3-7 Part, 0.2-0.4 parts of polyacrylamide, 30-60 parts of ferrous sulfate.
Preferably, the carboxylic organic acid is maleic acid-acrylic acid copolymer;
Preferably, the polyacrylamide is anionic polyacrylamide.
Preferably, Desert Sand grain stone in the desert that partial size is 0.2-0.3mm.
The invention also includes a kind of improved process for cement calacareous soil modifying agent, it is characterised in that: including with Lower step:
1. in parts by weight, 1000-3000 parts of Desert Sand are uniformly spread on the soil surface with the 80% of weight percent, Then it ploughs deeply one time, ploughed depth >=35cm, rotary tillage one time, rotary tillage depth 15cm;
2. after the soil surface that 20% remaining Desert Sand is sprinkling upon after rotary tillage, then rotary tillage one time, rotary tillage depth 15cm;
3. by carboxylic organic acid 1-20 parts, 0.1-0.6 parts of polyacrylamide, the aqueous solution that 20-90 parts of ferrous sulfate Conditioner applies Tanaka, the side 20-25 of pouring water per acre, earth's surface not ponding after irrigation with microspray irrigation water;
4. after 2-3 days, then irrigating primary, the side 40-60 of pouring water per acre, earth's surface not ponding, gluing after improve after irrigation Matter calacareous soil.It is preferably used in cement calacareous soil modifying agent and its improved process, is contained largely using organic acid Carboxyl, can dissociate hydrogen ion and high polymer anion in aqueous solution, and this anion is the excellent of the cation such as calcium ion Different chelating agent discharges cured calcium in soil, is reacted by acive calcium ion replaceability sodium ion displacement in soil colloid, So that sodium ion is entered the soil liquid from soil colloid, underground water can be entered with irrigation water or drainage ditch is drained, to obviously drop The chemical equation of low soil pH value and basicity, reaction is as follows:
(1)2R-COOH+CaCO3=Ca (RCOO)2+CO2+H2O
(2)2H++Na2CO3=2Na++CO2+H2O
(3)H++NaHCO3=Na++CO2+H2O
(4)Ca(RCOO)2+2Na+=Ca2++2NaRCOO。
It is preferably used in cement calacareous soil modifying agent and its improved process, is determined according to soil calcium carbonate content and contains carboxylic The amount of application of the organic acid of base, specifically, when soil calcium carbonate content is between 1.0%-2.0%, organic acid dosage 2.2- 4.6kg;When soil calcium carbonate content is between 2.0%-3.0%, organic acid dosage 4.5-6.8kg;Soil calcium carbonate content exists When between 3.0%-4.0%, organic acid dosage 6.8-9.0kg.Specific formula is as follows:
A=2* (0.2*667* ρ b* ω) * Mr2*ρ/1000*Mr1
A is organic acid dosage/kg, and ω is content/% of calcium carbonate in 0-20cm topsoil 1kg, and ρ b is clayey soil Bulk density/kgm-3, Mr1For calcium carbonate molecular weight=100, Mr2For the molecular weight of organic acid, ρ is the density of organic acid, and 2 are The charge number of calcium ion.
It is preferably used in cement calacareous soil improved process, sulfate industry iron is determined according to exchangeable sodium ion in soil Amount of application, specifically when soil exchangeable sodium ions content is in 2.0-4.0cmol/kg, ferrous sulfate dosage 27-54kg;Work as soil Earth exchangeable sodium ion concentration is in 4.0-6.0cmol/kg, ferrous sulfate dosage 54-82kg;When soil exchangeable sodium ion contains Amount is in 6.0-8.0cmol/kg, ferrous sulfate dosage 82-109kg;When soil exchangeable sodium ions content is in 8.0- When 10.0cmol/kg, ferrous sulfate dosage 109-136kg;Specific formula is as follows:
B is ferrous sulfate dosage/kg, and n is content/cmolkg of exchangeable sodium ion-1, 10% is conversion factor, 0.2*667 is volume/m of cement calcareous soil 20cm soil layer per acre3, ρ b is the appearance of calacareous soil unit volume soil Weight/kgm-3,It is the charge number of ferrous ion for ferrous sulfate molecular weight, 2,100 are converted into the coefficient of mol for cmol, 1000 are converted into the coefficient of kg for g.
It is preferably used in cement calacareous soil modifying agent and its improved process, desert is determined according to clay content in soil The amount of application of sand, specifically when soil clay particle (< 0.002mm) content is in 25%-45%, Desert Sand dosage 1000-1500kg; When soil clay particle content is in 45%-65%, Desert Sand dosage 1500-2000kg;When soil clay particle content be greater than 65% when, Desert Sand dosage 2000-3000kg;
The present invention has the advantage that compared with prior art
A kind of cement calacareous soil modifying agent of the invention is suitable for soil calciferous, is contained greatly using organic acid The carboxyl of amount, can dissociate hydrogen ion and high polymer anion in aqueous solution, and this anion is the cations such as calcium ion Excellent chelating agent, discharge soil in cured calcium, replaceability sodium ion in soil colloid is replaced by acive calcium ion Reaction, makes sodium ion enter the soil liquid from soil colloid, underground water can be entered with irrigation water or drainage ditch is drained.It does not need A large amount of gypsum are added, achieve the purpose that improve soil using the repair function of soil itself.
A kind of cement calacareous soil modifying agent of the invention is proposed according to calacareous soil Geographical Distribution Features using rich Rich Desert Sand is the modification method of soil moved in improve the original blending, and applying this soil conditioner and its improved process not only makes barren calcareous Soil is fully utilized, and develops the utility value in desert again.
A kind of cement calacareous soil modifying agent of the invention can be effectively reduced the pH value and total salt quantity of topsoil, change Kind soil aggregate structure, reduces clayed soil bulk density, improves the porosity of soil, increases soil permeability;2-3 after improvement It is horizontal that crop can reach middle high-yield field.Machine acid powerful sequestering power and dispersibility contains in activating soil a large amount of Solidify calcium, the calcium ion of activation not only the sodium ion in soil colloid can occur displacement reaction, so as to improve the granule of soil Structure lowers pH matter and total salt quantity in soil, reduces clayed soil bulk density, improves the porosity of soil, increases soil permeability Property, but also be the calcareous fertilisers that plant growth needs;It is horizontal to can reach middle high-yield field for the crop of 2-3 after improvement.Of the invention The addition of soil conditioner not will cause the secondary pollution of soil environment.
Composition of the invention is simple, preparation method is convenient, easy to use, is watered and sprays, applies with water droplet or with water-saving filling Irrigate technology trickle irrigation.
Specific embodiment
Carbon in soil acid calcium content is measured according to LY/T 1250-1999 " forest soil carbonic acid calcium catalyst standard ";
Exchangeable sodium ion measurement is according to LY/T 1248-1999 " the measurement mark of alkali-affected soil exchangeable sodium in soil colloid It is quasi- " measurement;
Clay content is measured according to NY/T1121.3-2006, the average grain diameter < 0.002mm of clay in soil;
To make the object, technical solutions and advantages of the present invention clearer, technical solution of the present invention will be carried out below Detailed description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Base Embodiment in the present invention, those of ordinary skill in the art are obtained all without making creative work Other embodiment belongs to the range that the present invention is protected.Below in conjunction with specific example, the invention will be further described.
A kind of cement calacareous soil modifying agent, it is characterised in that: in parts by weight, be made of following raw material: Desert Sand 1000-3000 parts, carboxylic organic acid 1-20 parts, 0.1-0.6 parts of polyacrylamide, 20-90 parts of ferrous sulfate;
Wherein, Desert Sand is the sand grains composition for taking from the partial size 0.2-0.3mm in desert, by obtaining after crossing 60-80 mesh;
Wherein, carboxylic organic acid is selected from maleic acid-acrylic acid copolymer;
Wherein, polyacrylamide is selected from anionic polyacrylamide;
Wherein, ferrous sulfate is that agricultural is ferrous with anhydrous slufuric acid, molecular weight 152.
Embodiment 1
A kind of cement calacareous soil modifying agent, it is characterised in that: in parts by weight, be made of following raw material: Desert Sand 1000 parts, 20 parts of maleic acid-acrylic acid copolymer, 0.6 part of anionic polyacrylamide, 90 parts of ferrous sulfate;
Its improved process the following steps are included:
1. in parts by weight, 800 parts of Desert Sand are uniformly spread on the soil surface, then plough deeply one time, ploughed depth >= 35cm, rotary tillage one time, rotary tillage depth 15cm;
2. after 200 parts of soil surfaces being uniformly sprinkling upon after rotary tillage of Desert Sand, then rotary tillage one time, rotary tillage depth 15cm;
3. by 20 parts of maleic acid-acrylic acid copolymer, 0.6 part of anionic polyacrylamide, 90 parts of ferrous sulfate water-soluble Liquid conditioner is with micro- spray or pours water and applies Tanaka, the side 20-25 of pouring water per acre, earth's surface not ponding after irrigation;
4. after 2-3 days, then irrigating primary, the side 40-60 of pouring water per acre, earth's surface not ponding, gluing after improve after irrigation Matter calacareous soil.
Embodiment 2
A kind of cement calacareous soil modifying agent, it is characterised in that: in parts by weight, be made of following raw material: Desert Sand 1000 parts, 1 part of maleic acid-acrylic acid copolymer, 0.1 part of anionic polyacrylamide, 20 parts of ferrous sulfate;
Its improved process the following steps are included:
1. in parts by weight, 800 parts of Desert Sand are uniformly spread on the soil surface, then plough deeply one time, ploughed depth >= 35cm, rotary tillage one time, rotary tillage depth 15cm;
2. after 200 parts of soil surfaces being uniformly sprinkling upon after rotary tillage of Desert Sand, then rotary tillage one time, rotary tillage depth 15cm;
3. by 1 part of maleic acid-acrylic acid copolymer, 0.1 part of anionic polyacrylamide, the aqueous solution that 20 parts of ferrous sulfate Conditioner is with micro- spray or pours water and applies Tanaka, the side 20-25 of pouring water per acre, earth's surface not ponding after irrigation;
4. after 2-3 days, then irrigating primary, the side 40-60 of pouring water per acre, earth's surface not ponding, gluing after improve after irrigation Matter calacareous soil.
Embodiment 3
A kind of cement calacareous soil modifying agent, it is characterised in that: in parts by weight, be made of following raw material: Desert Sand 2000 parts, 20 parts of maleic acid-acrylic acid copolymer, 0.6 part of anionic polyacrylamide, 90 parts of ferrous sulfate;
Its improved process the following steps are included:
1. in parts by weight, 1600 parts of Desert Sand are uniformly spread on the soil surface, then plough deeply one time, ploughed depth >= 35cm, rotary tillage one time, rotary tillage depth 15cm;
2. after 400 parts of soil surfaces being uniformly sprinkling upon after rotary tillage of Desert Sand, then rotary tillage one time, rotary tillage depth 15cm;
3. by 20 parts of maleic acid-acrylic acid copolymer, 0.6 part of anionic polyacrylamide, 90 parts of ferrous sulfate water-soluble Liquid conditioner is with micro- spray or pours water and applies Tanaka, the side 20-25 of pouring water per acre, earth's surface not ponding after irrigation;
4. after 2-3 days, then irrigating primary, the side 40-60 of pouring water per acre, earth's surface not ponding, gluing after improve after irrigation Matter calacareous soil.
Embodiment 4
A kind of cement calacareous soil modifying agent, it is characterised in that: in parts by weight, be made of following raw material: Desert Sand 2000 parts, 1 part of maleic acid-acrylic acid copolymer, 0.1 part of anionic polyacrylamide, 20 parts of ferrous sulfate;
Its improved process the following steps are included:
1. in parts by weight, 1600 parts of Desert Sand are uniformly spread on the soil surface, then plough deeply one time, ploughed depth >= 35cm, rotary tillage one time, rotary tillage depth 15cm;
2. after 400 parts of soil surfaces being uniformly sprinkling upon after rotary tillage of Desert Sand, then rotary tillage one time, rotary tillage depth 15cm;
3. by 1 part of maleic acid-acrylic acid copolymer, 0.1 part of anionic polyacrylamide, the aqueous solution that 20 parts of ferrous sulfate Conditioner is with micro- spray or pours water and applies Tanaka, the side 20-25 of pouring water per acre, earth's surface not ponding after irrigation;
4. after 2-3 days, then irrigating primary, the side 40-60 of pouring water per acre, earth's surface not ponding, gluing after improve after irrigation Matter calacareous soil.
Embodiment 5
A kind of cement calacareous soil modifying agent, it is characterised in that: in parts by weight, be made of following raw material: Desert Sand 3000 parts, 20 parts of maleic acid-acrylic acid copolymer, 0.6 part of anionic polyacrylamide, 90 parts of ferrous sulfate;
Its improved process the following steps are included:
1. in parts by weight, 2400 parts of Desert Sand are uniformly spread on the soil surface, then plough deeply one time, ploughed depth >= 35cm, rotary tillage one time, rotary tillage depth 15cm;
2. after 600 parts of soil surfaces being uniformly sprinkling upon after rotary tillage of Desert Sand, then rotary tillage one time, rotary tillage depth 15cm;
3. by 20 parts of maleic acid-acrylic acid copolymer, 0.6 part of anionic polyacrylamide, 90 parts of ferrous sulfate water-soluble Liquid conditioner is with micro- spray or pours water and applies Tanaka, the side 20-25 of pouring water per acre, earth's surface not ponding after irrigation;
4. after 2-3 days, then irrigating primary, the side 40-60 of pouring water per acre, earth's surface not ponding, gluing after improve after irrigation Matter calacareous soil.
Embodiment 6
A kind of cement calacareous soil modifying agent, it is characterised in that: in parts by weight, be made of following raw material: Desert Sand 3000 parts, 1 part of carboxylic organic acid, 0.1 part of polyacrylamide, 20 parts of ferrous sulfate;
Its improved process the following steps are included:
1. in parts by weight, 2400 parts of Desert Sand are uniformly spread on the soil surface, then plough deeply one time, ploughed depth >= 35cm, rotary tillage one time, rotary tillage depth 15cm;
2. after 600 parts of soil surfaces being uniformly sprinkling upon after rotary tillage of Desert Sand, then rotary tillage one time, rotary tillage depth 15cm;
3. by 1 part of maleic acid-acrylic acid copolymer, 0.1 part of anionic polyacrylamide, the aqueous solution that 20 parts of ferrous sulfate Conditioner is with micro- spray or pours water and applies Tanaka, the side 20-25 of pouring water per acre, earth's surface not ponding after irrigation;
4. after 2-3 days, then irrigating primary, the side 40-60 of pouring water per acre, earth's surface not ponding, gluing after improve after irrigation Matter calacareous soil.
Embodiment 7
Test carries out on the Yinchuan Plain in Ningxia northwestward Helan County farm Nuan Quan, and trial zone is located at 38.4 ° of north latitude, east longitude 106.1°.Trial zone weather is that temperate zone arid continental climate, soil property are contained in soil based on salination meadow soil in typical There is calcium carbonate, the surface layer 0-20cm calcium carbonate average content is 2.94%.Trial zone plantation oil uses sunflower, and kind is oily certain herbaceous plants with big flowers (306).
Test sets 6 processing (embodiment 1-6), 1 control, 3 repetitions, RANDOMIZED BLOCK DESIGN.Plot area 10X 20 Rice, is administered according to the improved process of this patent.The harvest time measurement pH value of soil during test, total salt quantity, the soil weight, Water soluble anion CO3 2-、HCO3 -, water-soluble cationic Ca2+, Na+.Observe growth indexes (emergence rate, biomass, the production of oily certain herbaceous plants with big flowers Amount).
Table 1-4 is test data result table
Table 1
Table 2
Table 3
Table 4
The surface layer 0-20cm > 5mm/% 2-5mm/% < 0.25mm/%
Compare CK 35.59 41.51 22.91
After improvement 37.35 44.48 18.17
By table 1-4 can be seen that application this patent soil conditioner, sticky calacareous soil physicochemical property pH value, Total salt quantity, basicity are than control CK decline, and the decline of soil sodium ion is obvious, and acive calcium ion increases in soil, the soil weight It reduces, increases soil porosity, soil aggregate structure is obviously improved, crop yield and its indices for constituting yield factors Increase.Aspects above proves, the soil conditioner and its improved process of the invention patent, to cement terra calcis The raising of improvement, the crop yield of earth crumb structure has obvious action, and improved effect is obvious.
Described above to be merely exemplary for the purpose of the present invention, and not restrictive, those of ordinary skill in the art understand, Without departing from the spirit and scope defined by the claims, any modification, the variation or equivalent that can be made all will It falls under the scope of the present invention.

Claims (12)

1. a kind of cement calacareous soil modifying agent, it is characterised in that: in parts by weight, be made of following raw material: Desert Sand 1000-3000 parts, carboxylic organic acid 1-20 parts, 0.1-0.6 parts of polyacrylamide, 20-90 parts of sulfate industry iron.
2. a kind of cement calacareous soil modifying agent according to claim 1, it is characterised in that: in parts by weight, by with Lower raw material composition: 1000-2000 parts of Desert Sand, carboxylic organic acid 7-15 parts, 0.4-0.6 parts of polyacrylamide, sulfuric acid is sub- 60-90 parts of iron.
3. a kind of cement calacareous soil modifying agent according to claim 1, it is characterised in that: in parts by weight, by with Lower raw material composition: 2000-3000 parts of Desert Sand, carboxylic organic acid 3-7 parts, 0.2-0.4 parts of anionic polyacrylamide, sulphur Sour 30-60 parts of ferrous iron.
4. carboxylic organic acid according to claim 1 to 3 is selected from acetic acid, formic acid, maleic acid-acrylic acid copolymer, lemon At least one of lemon acid, amino acid, succinic acid.
5. maleic acid-acrylic acid copolymer according to claim 4 obtains process are as follows: by maleic acid and acrylic acid with mistake Ammonium sulfate be initiator under the conditions of, obtained in 65 ° of -75 ° of isothermal reactions.
6. Desert Sand according to claim 1 to 3 is the sand grains composition for taking from the partial size 0.2-0.3mm in desert, by mistake It is obtained after 60-80 mesh.
7. polyacrylamide according to claim 1 to 3 is selected from anionic polyacrylamide.
8. ferrous sulfate according to claim 1 to 3 is that agricultural is ferrous with anhydrous slufuric acid, molecular weight 152.
9. one kind described in claim 1-3 be used for cement calacareous soil modifying agent improved process, it is characterised in that: including with Lower step:
1. in parts by weight, 1000-3000 parts of Desert Sand are uniformly sprinkling upon on upper earth surface with the 80% of weight percent, then It ploughs deeply one time, ploughed depth >=35cm, rotary tillage one time, rotary tillage depth 15cm;
2. after the soil surface that 20% remaining Desert Sand is sprinkling upon after rotary tillage, then rotary tillage one time, rotary tillage depth 15cm;
3. by carboxylic organic acid 1-20 parts, 0.1-0.6 parts of polyacrylamide, the aqueous solution conditioning that 20-90 parts of ferrous sulfate Agent is with micro- spray or pours water and applies Tanaka, the side 20-25 of pouring water per acre, earth's surface not ponding after irrigation;
4. after 2-3 days, then irrigating primary, the side 40-60 of pouring water per acre, earth's surface not ponding, the cement stone after being improved after irrigation Ash soil.
10. a kind of improved process of cement calacareous soil modifying agent according to claim 9, it is characterised in that: by sulphur Sour ferrous iron is dissolved in water according to 1: 10 ratio, after dissolution, is then sequentially added carboxylic organic acid and polyacrylamide, is stirred Aqueous solution conditioner is formed after mixing.
11. a kind of improved process of cement calacareous soil modifying agent according to claim 9, it is characterised in that: according to The calcium carbonate content of pedotheque determines the ratio of carboxylic organic acid, specifically: soil calcium carbonate content is in 1.0%- When 2.0%, 1-5 parts of carboxylic organic acid dosage;Soil calcium carbonate content is in 2.0%-3.0%, carboxylic organic acid 4-8 parts of dosage;Soil calcium carbonate content is in 3.0%-4.0%, 6-10 parts of carboxylic organic acid dosage;Soil calcium carbonate contains When measuring > 4.0%, 10-20 parts of carboxylic organic acid dosage.
12. a kind of improved process of sticky calacareous soil modifying agent according to claim 9, it is characterised in that: according to The clay content of pedotheque determines the ratio of Desert Sand, specifically: when soil clay particle (< 0.002mm) content 25%-45%, 1000-1500 parts of Desert Sand dosage;When clay content 45%-65%, 1500-2000 parts of Desert Sand dosage;Clay content > When 65%, 2000-3000 parts of Desert Sand dosage.
CN201910269069.7A 2019-04-08 2019-04-08 A kind of cement calacareous soil modifying agent and its improved process Pending CN109897642A (en)

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Publication number Priority date Publication date Assignee Title
CN111567303A (en) * 2020-05-22 2020-08-25 西藏予军逆境作物研发有限公司 Planting method of sea buckthorn in Tibet high-altitude areas
CN111567303B (en) * 2020-05-22 2021-08-24 西藏予军逆境作物研发有限公司 Planting method of sea buckthorn in Tibet high-altitude areas
CN112207122A (en) * 2020-09-23 2021-01-12 内蒙古农业大学 Method for remedying heavy metal pollution of calcareous soil
CN115322038A (en) * 2022-09-02 2022-11-11 中国农业大学 Mucky soil structure improver and using method thereof

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