CN109699226A - A kind of modification method of beach salt-soda soil Regional City avenue afforestation with soil - Google Patents
A kind of modification method of beach salt-soda soil Regional City avenue afforestation with soil Download PDFInfo
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The invention discloses a kind of modification method of beach salt-soda soil Regional City avenue afforestation with soil, its key points of the technical solution are that including the following steps: to mix husky processing, salt discharge of pouring water, being sprinkled into water-retaining agent and be sprinkled into soil conditioner；The water-retaining agent includes that following polymerizable raw material forms: acrylamide, acrylic acid, starch, straw powder, diatomite, sodium metasilicate, alkyl glycosides, initiator, crosslinking agent and water；The soil conditioner includes that following raw material mixes: organic fertilizer, inorganic fertilizer, acid treated earth and bacteria agent.After saline and alkaline greenbelt soil is mixed sand by the present invention, soil hardening can be alleviated, be conducive to subsequent salt discharge；After soil carries out preliminary salt discharge, by the effect of water-retaining agent, soil erosion can be reduced；Soil conditioner can reduce the salinity of soil, the alkalinity for reducing soil, increase soil fertility；Water-retaining agent also has the function of water-retaining property, inhales fertilizer and nutrient preserving capability, has gain effect to soil conditioner.
Description
Technical field
The present invention relates to municipal technical field of greening, more specifically, it is related to a kind of beach salt-soda soil Regional City row
The modification method of road greenbelt soil.
Background technique
The greenbelt on city trade is the common greening measure of urban afforestation；Greenbelt is with referring to the bar shaped for greening
Band, the greenbelt in city can eliminate visual fatigue, environment purification, beautifying city, and the greenbelt on trade can be inhaled
The tail gas for receiving automobile discharge plays the role of purifying air, weakens noise, takes into account beauty and practical effect.
The plant of greenbelt mainly has arbor class, shrub and ground by class, wherein fast-growing method paulownia and cinnamomum camphora tree due to
Fast with growth, anti-air pollution ability is strong, the advantages such as dust and pernicious gas can be absorbed, and is the preferred of avenue afforestation band
Plant；But the greenbelt in beach salt-soda soil area is due to leading to the soil of riviera by its seawater influence and tide invasion
Contain more salinity in earth, keeps riviera saline Land problem more serious；Although and fast-growing method paulownia is with stronger
Vitality, its adaptability is in subacidity or neutrality, well-drained soil, though slightly alkaline soil can be grown, but easily occurs yellow
Change；And cinnamomum camphora tree is also not suitable for growing in arid, barren and saline-alkali soil；When transplanting plant, salinity and alkalinity are excessive
Soil then will affect the growth of plant, and in order to solve this problem, people attempt the soil that salt-soda soil is administered using various methods.
The improvement in salt-soda soil at present mainly has four physically improved, water conservancy improvement, biological modification and chemical modifying aspects；Object
Reason improvement is to be rectified and improved by leveling land, deep ploughing the methods of to sun the earth which has been ploughed up to soil layer；And water conservancy improvement is then by washing leaching
The salinity of soil is reduced, in the prior art, the patent application document of Publication No. CN105474823A discloses a kind of coastal area
The method of the Drainage of salt of the greenbelt in the heavy saline development zone in domain comprising following steps: (one) heavy saline per acre
Soil surface is laid with 200 kilograms of -300 kilograms of stalks, carries out earth moving operations to the soil of heavy saline, adulterates stalk uniformly
In soil, depth of turning soil 50cm-80cm；(2) Pipe for draining alkali is buried in heavy saline bottom angled dike, in heavy saline one
Gutter, gutter described in one end connection that the Pipe for draining alkali tilts down is arranged in side, and the Pipe for draining alkali dike buried depth degree is 1m-
1.2m, the spacing of the adjacent Pipe for draining alkali are 5m；(3) heavy saline is implemented to irrigate using underground brackish water as water source.
But the method improvement soil improved by physically improved or water conservancy just needs to reach good regulation effect
It puts into biggish labor intensity or uses a large amount of water, economic cost is lower；And biological modification is planted in salt-soda soil
The plant of the fluffy equal saline-alkali tolerants of alkali, makes plant solidify soil, reduces soil erosion, the deposition of soluble-salt is reduced, to reach drop
The purpose of low soil salt, since such method is the salinity for reducing soil during growth by plant, by environment because
Element and plant variety are affected, and administer that the time is long, governance efficiency is lower；Chemical modifying is directed to that stone is added in salt-soda soil
The soil conditioners such as cream, potassium fulvate make it that complex reaction occur with the salt ion in salt-soda soil, it are discharged with irrigation water,
To achieve the purpose that reduce soil salt, the improvement fast speed of this method, but due to its reduce soil salt with
And while pH, chemical substance can be introduced, it is easy to cause the secondary hardened of soil, lead to the problem of other.
Therefore, how easy, efficiently administer salt-soda soil, be a problem to be solved.
Summary of the invention
The purpose of the present invention is to provide a kind of modification method of beach salt-soda soil Regional City avenue afforestation with soil, salt
After alkali greenbelt soil mixes sand, soil hardening can be improved, be conducive to subsequent salt discharge；After soil carries out preliminary salt discharge, lead to
The effect of water-retaining agent is crossed, soil erosion can be reduced；Soil conditioner can reduce the alkalinity of soil, wherein the organic matter contained
The fertility that soil can be improved, keeps soil from packing together；Water-retaining agent also has the function of water-retaining property, inhales fertilizer and nutrient preserving capability, right
Soil conditioner has gain effect.
Above-mentioned technical purpose of the invention has the technical scheme that
A kind of modification method of beach salt-soda soil Regional City avenue afforestation with soil, includes the following steps:
(1) selection needs the saline and alkaline greenbelt soil improved, to incorporation sand, table at the topsoil 40-50cm of greenbelt soil
The volume ratio of soil layer and sand is 1:0.25, ploughs depth 40-50cm；
(2) it then pours water salt discharge to soil, daily irrigation quantity is 15-20 cubes/mu, continues 1-2 days；
(3) soil of step (2) is sprinkled into water-retaining agent, then turns over whole soil, smooth earth's surface stands 1-2 days, the addition of water-retaining agent
Amount is 60-80kg/ mus；
(4) soil conditioner is uniformly sprinkled to the earth's surface of step (3), stands 3-5 days, the additive amount of soil conditioner is 200-
240kg/ mus；
Based on parts by weight, the water-retaining agent includes that following polymerizable raw material forms: 60-80 parts of acrylamide, acrylic acid 10-20
Part, 20-30 parts of starch, 30-40 parts of straw powder, 20-30 parts of diatomite, 10-15 parts of sodium metasilicate, 4-6 parts of alkyl glycosides, initiator
2-4 parts, 0.6-0.8 parts of crosslinking agent and 80-100 parts of water；
Based on parts by weight, the soil conditioner includes that following raw material mixes: 20-30 parts of organic fertilizer, inorganic fertilizer 10-20
Part, 20-30 parts of acid treated earth and 0.03-0.05 parts of bacteria agent.
By using above-mentioned technical proposal, after the soil of saline and alkaline greenbelt is mixed sand, the feelings of soil hardening can be reduced
Condition may advantageously facilitate subsequent salt discharge of pouring water；After soil carries out preliminary salt discharge, by the effect of water-retaining agent, water and soil can be reduced
It is lost；Soil conditioner can reduce the salinity of soil, the alkalinity for reducing soil, the fertility for improving soil, to prevent soil
It is hardened；Water-retaining agent also has the function of water-retaining property, inhales fertilizer and nutrient preserving capability, can have gain effect to soil conditioner.
Further, the water-retaining agent is prepared with the following method:
S1: after stalk is crushed, straw powder is obtained after sieving with 100 mesh sieve；20-30 parts of starch and 30-40 parts of straw powders are added
In 80-100 parts of water, it is warming up to 90-95 DEG C, 40-60min is gelatinized, obtains gelatinized starch；
S2: acrylamide 60-80 parts, 10-20 parts of acrylic acid, 20-30 parts of diatomite, sodium metasilicate 10- are added into gelatinized starch
15 parts, 4-6 parts of alkyl glycosides and 2-4 parts of initiator, are warming up to 50-60 DEG C, stir 5- with the speed of 600-800r/min
After 10min, 0.6-0.8 parts of crosslinking agents are added, are warming up to 60-70 DEG C, 30-40min is stirred with the speed of 400-600r/min
Afterwards, water-retaining agent slurries are obtained；
S3: after water-retaining agent slurries are washed with the ethanol solution of 30-90wt%, placing it at a temperature of 80-90 DEG C, dry 4-
6h obtains water-retaining agent.
By using above-mentioned technical proposal, with acrylamide, acrylic acid, starch, straw powder, diatomite, sodium metasilicate and
The case where alkyl glycosides is the water-retaining agent that raw material is formed, and has good water-retaining property, can reduce soil erosion, and also to soil
Earth modifying agent has gain effect, and the permeability of soil conditioner in the soil can be improved, and improves absorption of the plant to fertilizer
Rate improves the nitrogen fixation of soil.
Further, the initiator is potassium peroxydisulfate.
By using above-mentioned technical proposal, potassium peroxydisulfate as common initiator, can trigger acrylamide monomer into
Row polymerization reaction.
Further, the crosslinking agent is N, N '-methylene-bisacrylamide.
By using above-mentioned technical proposal, N, N '-methylene-bisacrylamide as the crosslinking agent for preparing water-retaining agent, can be with
So that polymer molecular chain is formed bridged bond, becomes the insoluble macromolecular water-retaining agent of three-dimensional structure, improve the stability of water-retaining agent.
Further, the starch is one of cornstarch, wheaten starch or tapioca.
By using above-mentioned technical proposal, cornstarch, wheaten starch and tapioca starch belong to starch, from a wealth of sources,
It is cheap.
Further, the organic fertilizer include weight ratio be the seaweed slag of 6:4:3:1:1, turf, stalk, potassium fulvate with
And sucrose mixes.
By using above-mentioned technical proposal, the raw material of seaweed slag is marine brown class, and the marine brown in city is come by the sea
Source is extensive, cheap, the organic fertilizer formed after being mixed with seaweed slag with turf, stalk, potassium fulvate and sucrose, containing more
Kind organic acid, peptides and the nutrient abundant including nitrogen, phosphorus, potassium；It can not only be provided for crops comprehensively
Nutrition, increase the soil organism, keep soil from packing together, moreover it is possible to promote microbial reproduction, improve the physicochemical property and life of soil
Object activity.
Further, the inorganic fertilizer includes urea, ammonium dihydrogen phosphate, potassium phosphate and the calcium that weight ratio is 4:3:2:1
Magnesium-phosphorus fertilizer mixes.
By using above-mentioned technical proposal, the nothing mixed by urea, ammonium dihydrogen phosphate, potassium phosphate and calcium magnesium phosphate
Machine fertilizer can provide the elements such as nitrogen, phosphorus, calcium, potassium, magnesium for plant, with organic fertilizer and used time, have gain effect, can be improved
The fertility of soil, so that the nutrient in soil is more comprehensive.
Further, the acid treated earth is prepared with the following method: to 10-20 parts of montmorillonites, 10-20 parts of kaolin with
And the phosphoric acid of 5-10 parts of 20-30wt% is added in 1-2 parts of ethoxylated dodecyl alcohols, it stirs evenly, in 20-30 DEG C of temperature
Under, 4-6 days are stood, acid treated earth can be obtained.
By using above-mentioned technical proposal, after montmorillonite and the acidified processing of kaolin, can reduce saline and alkaline green
Change the pH with soil, and velocity of ion exchange can also be promoted, improves the water-retaining property and nutrient preserving capability of soil.
Further, the soil conditioner is prepared with the following method: bacteria agent being added in organic fertilizer, is stirred
It is deposited in reaction tank after uniformly, when placement temperature reaches 60-65 DEG C, stirs 2-4 times daily, continue 10-20 days；Then add again
Enter inorganic fertilizer and acid treated earth, stirs evenly.
By using above-mentioned technical proposal, organic fertilizer and bacteria agent are stacked, sent out after everfermentation accelerates the ripening by stacking
The activity of fertilizer can be improved in ferment, and the soil conditioner obtained after it is mixed with inorganic fertilizer and acid treated earth has reduction
The effect of soil pH value, plant growth of increasing soil fertility, promote.
Further, the bacteria agent is bacillus subtilis.
By using above-mentioned technical proposal, bacillus subtilis can be very good organic fertilizer, increase soil fertility, promote to plant
The growth of object improves the governance efficiency in salt-soda soil.
In conclusion the present invention has the advantages that compared with the prior art
1. the hardened of soil can be improved after saline and alkaline greenbelt soil mixes sand, be conducive to subsequent salt discharge；Soil carries out preliminary
After salt discharge, by the effect of water-retaining agent, soil erosion can be reduced；Soil conditioner can reduce the alkalinity of soil, wherein containing
The fertility of soil can be improved in some organic matters, keeps soil from packing together；Water-retaining agent also has water-retaining property, inhales fertilizer and nutrient preserving capability
Effect, to soil conditioner have gain effect；
2. the water conservation formed using acrylamide, acrylic acid, starch, straw powder, diatomite, sodium metasilicate and alkyl glycosides as raw material
Agent has good water-retaining property, the case where can reducing soil erosion, and also has gain effect to soil conditioner, can be with
The permeability of soil conditioner in the soil is improved, plant is improved to the absorptivity of fertilizer, improves the nitrogen fixation of soil；
3. seaweed slag is a kind of a kind of fertilizer produced and processed using marine brown class, the marine brown source in city is wide by the sea
It is general, cheap, the organic fertilizer formed after being mixed with seaweed slag with turf, stalk, potassium fulvate and sucrose, containing there are many have
Machine acid, peptides and the nutrient abundant including nitrogen, phosphorus, potassium；Comprehensive battalion can not only be provided for crops
It supports, increase the soil organism, moreover it is possible to promote microbial reproduction, improve the physicochemical property and bioactivity of soil.
Specific embodiment
Invention is further described in detail below.
One, the preparation example of water-retaining agent
Diatomite in the preparation example of following water-retaining agent is selected from the model 1250 of Lingshou County Hui Mao mineral products processing factory production
Diatomite；Sodium metasilicate is selected from the sodium metasilicate that the article No. of Shanghai shriek Chemical Co., Ltd. production is 45354；Alkyl glycosides is selected from wide
The alkyl glycosides of the model 0810 of Zhou Yin ring Chemical Co., Ltd. production.
The preparation example 1 of water-retaining agent:
S1: after stalk is crushed, straw powder is obtained after sieving with 100 mesh sieve；20kg cornstarch and 30-40kg straw powder are added
In 80kg water, 90 DEG C are warming up to, 40min is gelatinized, obtains gelatinized starch；
S2: acrylamide 60kg, acrylic acid 10kg, diatomite 20kg, sodium metasilicate 10kg, alkyl glycosides are added into gelatinized starch
4kg and potassium peroxydisulfate 2kg, is warming up to 50 DEG C, after stirring 5min with the speed of 600r/min, adds 0.6kgN, N '-methylene
Base bisacrylamide is warming up to 60 DEG C, after stirring 30min with the speed of 400r/min, obtains water-retaining agent slurries；
S3: after water-retaining agent slurries are washed with the ethanol solution of 30wt%, placing it at a temperature of 80 DEG C, and dry 4h is obtained
Water-retaining agent.
The preparation example 2 of water-retaining agent:
S1: after stalk is crushed, straw powder is obtained after sieving with 100 mesh sieve；25kg wheaten starch and 35kg straw powder are added
In 90kg water, 93 DEG C are warming up to, 50min is gelatinized, obtains gelatinized starch；
S2: acrylamide 70kg, acrylic acid 15kg, diatomite 25kg, sodium metasilicate 12.5kg, alkyl sugar are added into gelatinized starch
Glycosides 5kg and potassium peroxydisulfate 3kg, is warming up to 55 DEG C, after stirring 8min with the speed of 700r/min, adds 0.7kgN, N '-is sub-
Bisacrylamide is warming up to 65 DEG C, after stirring 35min with the speed of 500r/min, obtains water-retaining agent slurries；
S3: after water-retaining agent slurries are washed with the ethanol solution of 60wt%, placing it at a temperature of 85 DEG C, and dry 5h is obtained
Water-retaining agent.
The preparation example 3 of water-retaining agent:
S1: after stalk is crushed, straw powder is obtained after sieving with 100 mesh sieve；30kg tapioca and 40kg straw powder are added
In 100kg water, 95 DEG C are warming up to, 60min is gelatinized, obtains gelatinized starch；
S2: acrylamide 80kg, acrylic acid 20kg, diatomite 30kg, sodium metasilicate 15kg, alkyl glycosides are added into gelatinized starch
6kg and potassium peroxydisulfate 4kg, is warming up to 60 DEG C, after stirring 10min with the speed of 800r/min, adds 0.8kgN, N '-is sub-
Bisacrylamide is warming up to 70 DEG C, after stirring 40min with the speed of 600r/min, obtains water-retaining agent slurries；
S3: after water-retaining agent slurries are washed with the ethanol solution of 90wt%, placing it at a temperature of 90 DEG C, and dry 6h is obtained
Water-retaining agent.
The preparation example 4 of water-retaining agent: the difference of this preparation example and the preparation example of water-retaining agent 1 is, alkyl is not added in raw material
Glucosides and sodium metasilicate.
Two, the preparation example of soil conditioner
Montmorillonite in the preparation example of following soil conditioner is selected from the article No. that Lingshou County Hui Mao mineral products processing factory produces
600, granularity is the montmorillonite of 325 mesh, smectite content 86%；Kaolin is selected from the production of Lingshou County Hui Mao mineral products processing factory
The kaolin that article No. is 628；The article No. that potassium fulvate is selected from the production of Jinan great plan Chemical Co., Ltd. is 1804-08-036, contains
The potassium fulvate of amount >=70%；Crystalline urea of the urea selected from the production of Jinan cleer sea Chemical Co., Ltd., total nitrogen content >=
46.4%, moisture content≤0.03%；Calcium magnesium phosphate is selected from available phosphorus >=12% of Hubei gold jewel Chemical Co., Ltd. production
Calcium magnesium phosphate.
The preparation example 1 of soil conditioner:
S1: prepare acid treated earth: into 10kg montmorillonite, 10kg kaolin and 1kg ethoxylated dodecyl alcohol be added 5kg,
The phosphoric acid of 20wt%, stirs evenly, 20 DEG C at a temperature of, stand acidification 4 days, acid treated earth can be obtained；
S2: 6kg seaweed slag, 4kg turf, 3kg stalk, 1kg potassium fulvate and 1kg sucrose are mixed, organic fertilizer is obtained；
S3: 4kg urea, 3kg ammonium dihydrogen phosphate, 2kg potassium phosphate and 1kg calcium magnesium phosphate are mixed, inorganic fertilizer is obtained；
S4: 0.03kg bacillus subtilis being added in 20kg organic fertilizer, is deposited in reaction tank after mixing evenly, puts its temperature
When degree reaches 60 DEG C, stirs daily 2 times, continue 10 days；Then 10kg inorganic fertilizer and 20kg acid treated earth are added, stirring is equal
It is even.
The preparation example 2 of soil conditioner:
S1: it prepares acid treated earth: being added into 15kg montmorillonite, 15kg kaolin and 1.5kg ethoxylated dodecyl alcohol
The phosphoric acid of 7.5kg, 25wt%, stir evenly, 25 DEG C at a temperature of, stand acidification 5 days, acid treated earth can be obtained；
S2: 7.5kg seaweed slag, 5kg turf, 3.75kg stalk, 1.25kg potassium fulvate and 1.25kg sucrose are mixed,
Obtain organic fertilizer；
S3: 6kg urea, 4.5kg ammonium dihydrogen phosphate, 3kg potassium phosphate and 1.5kg calcium magnesium phosphate are mixed, obtained inorganic
Fertilizer；
S4: 0.04kg bacillus subtilis being added in 25kg organic fertilizer, is deposited in reaction tank after mixing evenly, puts its temperature
When degree reaches 63 DEG C, stirs daily 3 times, continue 15 days；Then 15kg inorganic fertilizer and 25kg acid treated earth are added, stirring is equal
It is even.
The preparation example 3 of soil conditioner:
S1: prepare acid treated earth: into 20kg montmorillonite, 20kg kaolin and 2kg ethoxylated dodecyl alcohol be added 10kg,
The phosphoric acid of 30wt%, stirs evenly, 30 DEG C at a temperature of, stand acidification 6 days, acid treated earth can be obtained；
S2: 9kg seaweed slag, 6kg turf, 4.5kg stalk, 1.5kg potassium fulvate and 1.5kg sucrose are mixed, obtained
Organic fertilizer；
S3: 8kg urea, 6kg ammonium dihydrogen phosphate, 4kg potassium phosphate and 2kg calcium magnesium phosphate are mixed, inorganic fertilizer is obtained；
S4: 0.05kg bacillus subtilis being added in 30kg organic fertilizer, is deposited in reaction tank after mixing evenly, puts its temperature
When degree reaches 65 DEG C, stirs daily 4 times, continue 20 days；Then 20kg inorganic fertilizer and 30kg acid treated earth are added, stirring is equal
It is even.
The preparation example 4 of soil conditioner: the difference of this preparation example and the preparation example of soil conditioner 1 is, in raw material not
Include acid treated earth.
The preparation example 5 of soil conditioner: the difference of this preparation example and the preparation example of soil conditioner 1 is, acidified soil
Raw material in do not include ethoxylated dodecyl alcohol.
Three, embodiment
Embodiment 1: a kind of modification method of beach salt-soda soil Regional City avenue afforestation with soil: include the following steps:
(1) selection needs the saline and alkaline greenbelt soil improved, to incorporation sand, topsoil at the topsoil 40cm of greenbelt soil
Volume ratio with sand is 1:0.25, ploughs depth 40cm；
(2) it then pours water salt discharge to soil, daily irrigation quantity is 15 cubes/mu, continues 1 day；
(3) soil of step (2) is sprinkled into water-retaining agent, then turns over whole soil, smooth earth's surface stands 1 day, the additive amount of water-retaining agent
It is 60kg/ mus, water-retaining agent is selected from water-retaining agent prepared by the preparation example 1 of water-retaining agent；
(4) soil conditioner is uniformly sprinkled to the earth's surface of step (3), stands 3 days, the additive amount of soil conditioner is 200kg/
Mu；Soil conditioner is selected from soil conditioner prepared by the preparation example 1 of soil conditioner.
Embodiment 2: a kind of modification method of beach salt-soda soil Regional City avenue afforestation with soil: include the following steps:
(1) selection needs the saline and alkaline greenbelt soil improved, to incorporation sand, topsoil at the topsoil 45cm of greenbelt soil
Volume ratio with sand is 1:0.25, ploughs depth 45cm；
(2) it then pours water salt discharge to soil, daily irrigation quantity is 17.5 cubes/mu, continues 2 days；
(3) soil of step (2) is sprinkled into water-retaining agent, then turns over whole soil, smooth earth's surface stands 2 days, the additive amount of water-retaining agent
It is 70kg/ mus, water-retaining agent is selected from water-retaining agent prepared by the preparation example 2 of water-retaining agent；
(4) soil conditioner is uniformly sprinkled to the earth's surface of step (3), stands 4 days, the additive amount of soil conditioner is 220kg/
Mu；Soil conditioner is selected from soil conditioner prepared by the preparation example 2 of soil conditioner.
Embodiment 3: a kind of modification method of beach salt-soda soil Regional City avenue afforestation with soil: include the following steps:
(1) selection needs the saline and alkaline greenbelt soil improved, to incorporation sand, topsoil at the topsoil 50cm of greenbelt soil
Volume ratio with sand is 1:0.25, ploughs depth 50cm；
(2) it then pours water salt discharge to soil, daily irrigation quantity is 20 cubes/mu, continues 2 days；
(3) soil of step (2) is sprinkled into water-retaining agent, then turns over whole soil, smooth earth's surface stands 2 days, the additive amount of water-retaining agent
It is 80kg/ mus, water-retaining agent is selected from water-retaining agent prepared by the preparation example 3 of water-retaining agent；
(4) soil conditioner is uniformly sprinkled to the earth's surface of step (3), stands 5 days, the additive amount of soil conditioner is 240kg/
Mu；Soil conditioner is selected from soil conditioner prepared by the preparation example 3 of soil conditioner.
Four, comparative example
Comparative example 1: this comparative example the difference from embodiment 1 is that, be not added with water-retaining agent.
Comparative example 2: this comparative example the difference from embodiment 1 is that, water-retaining agent select water-retaining agent preparation example 4 prepare guarantor
Aqua.
Comparative example 3: this comparative example the difference from embodiment 1 is that, soil conditioner be selected from soil conditioner preparation example 4
The soil conditioner of preparation.
Comparative example 4: this comparative example the difference from embodiment 1 is that, soil conditioner be selected from soil conditioner preparation example 5
The soil conditioner of preparation.
Comparative example 5: this comparative example the difference from embodiment 1 is that, water-retaining agent select water-retaining agent preparation example 4 prepare guarantor
Aqua, soil conditioner are selected from soil conditioner prepared by the preparation example 5 of soil conditioner.
Five, data are analyzed
1. one piece of beach saline land area is used to experimental field to be divided into eight parts as greenbelt soil, number is No. 1 ground, 2
The method on number ground, No. 3 ground, No. 4 ground, No. 5 ground, No. 6 ground, No. 7 ground and No. 8 ground, No. 1 ground embodiment 1 is administered, and No. 2 ground are used
The method of embodiment 2 is administered, and the method for No. 3 ground embodiment 3 is administered, and the method for No. 4 ground comparative example 1 is administered, No. 5 ground with pair
The method of ratio 2 is administered, and the method for No. 6 ground comparative example 3 is administered, and the method for No. 7 ground comparative example 4 is administered, No. 8 ground comparisons
The method of example 5 is administered；Eight pieces of ground are administered simultaneously, are sampled to the soil before improvement and the soil after improvement, the 0 of improvement
It, 5 days, 15 days, 25 days and 30 days, it is dense to the salinity in the soil of 20cm depth, 60cm depth and 80cm depth respectively
Degree EC value (EC value is for measuring soluble-salt concentration in solution) and pH value are detected, and be will test result and are shown in table
1 and table 2.
After table 1 administers salt-soda soil using the method for embodiment 1-3 and comparative example 1-5, the salt concentration EC value in soil
The EC value in the salt-soda soil (No. 1 ground -3 ground) administered by means of the present invention it can be seen from 1 data of table was at the 30th day
It can achieve 2.0mS/cm or so, illustrate the salt-soda soil administered by means of the present invention, can effectively reduce in soil
Soluble-salt content, governance efficiency with higher.
No. 4 ground are not added with water-retaining agent when administering, and the EC value content after improvement gradually decreases, but compared to No. 1
Ground, the EC value content in soil is still relatively high, illustrates that water-retaining agent can promote the reduction of salinity of soil.
When administering, the water-retaining agent of selection is selected from water-retaining agent prepared by the preparation example 4 of water-retaining agent, the original of water-retaining agent on No. 5 ground
Alkyl glycosides and sodium metasilicate are not added in material；EC value content after improvement gradually decreases, but compared to No. 1 ground, soil
EC value content in earth is still relatively high, compared to No. 4 ground, and the EC value content in soil is declined；And the 15 of improvement
Before it, the reduced amplitude of the EC value on No. 5 ground is smaller, but when administering the 30th day, EC value content reaches in soil
2.3mS/cm or so illustrates that the water-retaining agent prepared by alkyl glycosides and sodium metasilicate can promote the reduction of salinity of soil,
Improve the reduction speed of salinity in soil.
When administering, the soil conditioner of selection is selected from soil improvement prepared by the preparation example 4 of soil conditioner on No. 6 ground
Agent is not added with acidified soil in the soil conditioner, and the EC value content after improvement gradually decreases, but compared to No. 1 ground,
EC value content after improvement gradually decreases, but compared to No. 1 ground, and the EC value content in soil is still relatively high, explanation
Acidified soil may advantageously facilitate the reduction of soil salt.
When administering, the soil conditioner of selection is selected from soil improvement prepared by the preparation example 5 of soil conditioner on No. 7 ground
Agent is not added with ethoxylated dodecyl alcohol in the acidified soil of the soil conditioner, and the EC value content after improvement gradually drops
It is low, but the reduced amplitude of the EC value before 15 days is smaller, but when administering the 30th day, EC value content reaches in soil
2.0mS/cm or so is arrived, illustrates that the reduction speed of salinity can be improved in the ethoxylated dodecyl alcohol in acidified soil.
When administering, the water-retaining agent of selection is selected from water-retaining agent prepared by the preparation example 4 of water-retaining agent, the soil of selection on No. 8 ground
Modifying agent is selected from soil conditioner prepared by the preparation example 5 of soil conditioner, and the EC value content after improvement gradually decreases, but
It is compared to No. 1 ground, No. 5 ground and No. 7 ground, the reduction speed of the EC value in soil was slower, and at the 30th day of improvement,
EC value content reaches 2.4mS/cm or so in soil, illustrates the water-retaining agent prepared by sodium metasilicate and alkyl glycosides and acidification soil
Ethoxylated dodecyl alcohol in earth has synergistic effect when cooperating, and the salinity in soil can be effectively reduced.
After table 2 administers salt-soda soil using the method for embodiment 1-3 and comparative example 1-5, the pH value of soil
The pH in salt-soda soil (No. 1 ground -3 ground) that the present invention administers by means of the present invention it can be seen from 2 data of table is the
It can achieve 7.3 or so within 30 days, illustrate the salt-soda soil of method processing of the invention, the alkali content in soil can be effectively reduced,
Original moderate saline-alkali soil is set to become weakly alkaline soil.
The pH value of No. 4 ground and No. 5 ground after improvement gradually decreases, at the 30th day can with pH value 7.7 or so, compare
In No. 1 ground, illustrate that water-retaining agent advantageously reduces the pH value of soil.
The reduction amplitude of pH value of No. 6 ground after improvement is smaller, at the 30th day can with pH value 8, compared to No. 1
Ground illustrates that acidified soil can be substantially reduced the pH value of soil.
The reduction amplitude of pH value of No. 7 ground after improvement is smaller, but at first 15 days of improvement, the lower reduction of speed of pH value
Degree is slower, and at the 30th day of improvement, pH value can achieve 7.5, illustrate that the ethoxylated dodecyl alcohol in soil conditioner can
To improve the decrease speed of pH.
The reduction amplitude of pH value of No. 8 ground after improvement is smaller, at the 30th day can with pH value 7.6, pH value
Decrease speed is slower, and at the 30th day of improvement, pH value can achieve 7.7, illustrates to prepare by sodium metasilicate and alkyl glycosides
Water-retaining agent and acidified soil in ethoxylated dodecyl alcohol cooperation when have synergistic effect, can be effectively reduced in soil
pH。
In conclusion the salinity and pH value in soil can be effectively reduced by means of the present invention, and it is controlled
Manage method simple practical, easily operated, the improvement of the salt affected soil suitable for beach salt-soda soil area.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the scope of the claims of invention.
Claims (10)
1. a kind of modification method of beach salt-soda soil Regional City avenue afforestation with soil, characterized by the following steps:
(1) selection needs the saline and alkaline greenbelt soil improved, to incorporation sand, table at the topsoil 40-50cm of greenbelt soil
The volume ratio of soil layer and sand is 1:0.25, ploughs depth 40-50cm；
(2) it then pours water salt discharge to soil, daily irrigation quantity is 15-20 cubes/mu, continues 1-2 days；
(3) soil of step (2) is sprinkled into water-retaining agent, then turns over whole soil, smooth earth's surface stands 1-2 days, the addition of water-retaining agent
Amount is 60-80kg/ mus；
(4) soil conditioner is uniformly sprinkled to the earth's surface of step (3), stands 3-5 days, the additive amount of soil conditioner is 200-
240kg/ mus；
Based on parts by weight, the water-retaining agent includes that following polymerizable raw material forms: 60-80 parts of acrylamide, acrylic acid 10-20
Part, 20-30 parts of starch, 30-40 parts of straw powder, 20-30 parts of diatomite, 10-15 parts of sodium metasilicate, 4-6 parts of alkyl glycosides, initiator
2-4 parts, 0.6-0.8 parts of crosslinking agent and 80-100 parts of water；
Based on parts by weight, the soil conditioner includes that following raw material mixes: 20-30 parts of organic fertilizer, inorganic fertilizer 10-20
Part, 20-30 parts of acid treated earth and 0.03-0.05 parts of bacteria agent.
2. modification method of a kind of beach salt-soda soil Regional City avenue afforestation with soil according to claim 1, special
Sign is: the water-retaining agent is prepared with the following method:
S1: after stalk is crushed, straw powder is obtained after sieving with 100 mesh sieve；20-30 parts of starch and 30-40 parts of straw powders are added
In 80-100 parts of water, it is warming up to 90-95 DEG C, 40-60min is gelatinized, obtains gelatinized starch；
S2: acrylamide 60-80 parts, 10-20 parts of acrylic acid, 20-30 parts of diatomite, sodium metasilicate 10- are added into gelatinized starch
15 parts, 4-6 parts of alkyl glycosides and 2-4 parts of initiator, are warming up to 50-60 DEG C, stir 5- with the speed of 600-800r/min
After 10min, 0.6-0.8 parts of crosslinking agents are added, are warming up to 60-70 DEG C, 30-40min is stirred with the speed of 400-600r/min
Afterwards, water-retaining agent slurries are obtained；
S3: after water-retaining agent slurries are washed with the ethanol solution of 30-90wt%, placing it at a temperature of 80-90 DEG C, dry 4-
6h obtains water-retaining agent.
3. modification method of a kind of beach salt-soda soil Regional City avenue afforestation with soil according to claim 2, special
Sign is: the initiator is potassium peroxydisulfate.
4. modification method of a kind of beach salt-soda soil Regional City avenue afforestation with soil according to claim 2, special
Sign is: the crosslinking agent is N, N '-methylene-bisacrylamide.
5. modification method of a kind of beach salt-soda soil Regional City avenue afforestation with soil according to claim 1, special
Sign is: the starch is one of cornstarch, wheaten starch or tapioca.
6. modification method of a kind of beach salt-soda soil Regional City avenue afforestation with soil according to claim 1, special
Sign is: the organic fertilizer includes the seaweed slag that weight ratio is 6:4:3:1:1, turf, stalk, potassium fulvate and sucrose mixing
It forms.
7. modification method of a kind of beach salt-soda soil Regional City avenue afforestation with soil according to claim 1, special
Sign is: the inorganic fertilizer includes the urea that weight ratio is 4:3:2:1, ammonium dihydrogen phosphate, potassium phosphate and calcium magnesium phosphate mixing
It forms.
8. modification method of a kind of beach salt-soda soil Regional City avenue afforestation with soil according to claim 1, special
Sign is: the acid treated earth was prepared with the following method: to 10-20 parts of montmorillonites, 10-20 parts of kaolin and 1-2 parts months
In cinnamic alcohol polyoxyethylene ether be added 5-10 part 20-30wt% phosphoric acid, stir evenly, 20-30 DEG C at a temperature of, standing 4-6
It, can be obtained acid treated earth.
9. modification method of a kind of beach salt-soda soil Regional City avenue afforestation with soil according to claim 1, special
Sign is: the soil conditioner is prepared with the following method: bacteria agent being added in organic fertilizer, is stacked after mixing evenly
In reaction tank, when placement temperature reaches 60-65 DEG C, stirs 2-4 times daily, continue 10-20 days；Then add inorganic fertilizer with
And acid treated earth, it stirs evenly.
10. modification method of a kind of beach salt-soda soil Regional City avenue afforestation with soil according to claim 1, special
Sign is: the bacteria agent is bacillus subtilis.
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