CN103348838B

CN103348838B - The manufacture method of modified sandy soil

Info

Publication number: CN103348838B
Application number: CN201310224678.3A
Authority: CN
Inventors: 易志坚
Original assignee: Individual
Current assignee: Individual
Filing date: 2013-06-06
Publication date: 2016-11-30
Anticipated expiration: 2033-06-06

Abstract

The present invention discloses the manufacture method of a kind of modified sandy soil, by the solid organic materials that can be dissolved in water be dissolved in water formed there is the solution of caking property and adhesiveness after formed with after sandy soil mix again；After moisture evaporation, can bond sandy soil granule and meeting of the solid organic materials that can be dissolved in water therein can again be dissolved in the water after water and be formed and have the solution of caking property and adhesiveness and adhesion sandy soil granule, the invention enables general sandy soil " soil ", fundamentally change the interaction relationship between sandy soil granule, constitute the pellet pores structure with adhesion (cohesive strength)；In use, material is difficult to run off because of the feature of its caking property and adhesiveness；Sandy soil are made to possess stable and storage moisture, the performance of nutrient as soil, it is possible to provide the solid condition of growth for plant, be the measure preferably administering sandy soil, desert；Meanwhile, modified sandy soil also can carry out plant growing as utilizing the means of the husky resource such as sandy beach, sand ground.

Description

The manufacture method of modified sandy soil

Technical field

The present invention relates to Sandy Soil Resources utilize and desertification improvement field, can particularly to one Obtain the manufacture method of the modified sandy soil with earth characteristic.

Background technology

Sandy soil refer to containing husky a lot of soil.The soil is porous for sandy soil, and water-permeable and air permeable is good, but water conservation fertilizer-preserving ability is poor, Improvement is needed when cultivating.Sandy soil are less suitable for certain plants growth, in the case of silt content is very big, with sand Unconcerned or top layer, Desertification sand or the soil that desertifies character approximates；Sandy soil are in addition to naturally occurring, more Formed by desertification.

(1) desertification and harm thereof

Desertification is the great environmental problem that face of mankind nowadays is the severeest.

Whole world land surface is 1.62 hundred million square kilometres, takes up an area the 30.3% of the ball gross area, Qi Zhongyue 1/3 (48,000,000 square kilometres) are Desert Area arid, semiarid, and annual with 4～60,000 square kilometres Speed expandings, and has the soil of 43% to be faced with the threat of desertification.

China is in the world by one of husky country with desertification serious harm.China national forestry bureau is in 2011 The numeral that year announces, whole nation sandy land area 1,730,000 square kilometres, account for the 18% of territory total area, its Middle desert area has 80.89 ten thousand square kilometres, accounts for the 8.4% of area.

Harm in Desertification Process include stream and sand dune reach cause to farmland cover, river, reservoir, Water channel blocks, and highway buries, and also makes whole environmental degradation, loss of land resource, and related draws The regional economy risen is slow, society is unstable etc. society, economic problems.

Desertification directly results in the precious land resource that can directly utilize and drastically reduces.Desertification is directly led Causing land deterioration, Soil structure destroys, the nutrient loss of soil, and these recover to need many decades, hundreds of Year, the most thousands of years.The deterioration of grasslands that desertification causes, make the advantage grass seeds being suitable to livestock edible by The fewest, even completely lose, herbage becomes short, sparse, and yield substantially reduces, grassland capacity for raising livestock on the grasslands Greatly decline.Desertification causes river, reservoir, water channel to block, such as, and the average annual sediment transport in the Yellow River 1,600,000,000 tons, The most just there are 1,200,000,000 tons from Desertification.Desertification causes railway bed, bridge, culvert in some areas Hole is damaged, and makes highway subgrade, road surface sand, forces highway communication to be interrupted, and even makes highway discard.Due to Dust storm is pressed hard, and thousands of herdsman is forced to move to alien land, becomes " eco-refugee ".China national forestry bureau The data provided show, 20 end of the centurys, and desertify the annual speed expanded with 3436 square kilometres, every 5 years An area being equivalent to Beijing's administrative division size is just had to lose value because of desertification, the whole nation The population affected by desertification reaches 1.7 hundred million.Desertification of land, desertification not only deteriorate ecological environment, decline soil The ground productivity, threatens rivers safety, and it is poor to aggravate husky district.

Desertification causes ecosystem and natural environment deterioration, and natural disaster takes place frequently, be facing mankind the most One of serious disaster.Natural, ecological is the integral framework that a various factors mutually restricts, will be according to necessarily The poised state that keeps relative stability of rule.Desertification greatly changes the physical features on earth's surface, land, Destroy Radiation budget balance, induction weather and environmental change, cause the soil erosion of Desertification More serious, green vegetation drastically reduces, and ecological environment drastically deteriorates, and rare animals and plants disappear or extinction, Diversity of organism suffers serious destruction.After unusual weather conditions and ecosystem are destroyed, cause desertification Speed aggravation, both form vicious cycle, are degrading natural environment further, make the people of Desertification Lose the basis depended on for existence, and cause the natural disaster in other area.According to monitoring, China city Air pollutants are mainly finely ground particles, and this is closely related with desertification.Dust pollution wide geographic area people The productive life environment of the people, sandstorm is frequent, have impact on people's health.

It is huge that the seriousness of Deserts in China also resides in the population statistics involved, and it directly or indirectly affects closely The life (account for the whole world and perplexed the 40% of population by desert and desertification) of 400000000 people.China's desertification harm Direct economic loss about 64,200,000,000 yuan is annual, and the indirect economic loss that desertification and derivative harm thereof cause is about 288900000000 yuan annual.If countermeasure without effectively preventing, be in the Urumchi of desert band, Lanzhou, Xi'an, The big cities such as Yinchuan, Taiyuan, Huhehaote, Beijing, Tianjin, can become city, desert one by one eventually, Large quantities of common people will become eco-refugee.

(2) measure of desert treatment and achievement

Desertification Control is essentially identical with control of desert mode, and fundamental way is the character according to hazards of sand storms, Take various technical measures, weaken the wind speed of near surface formation, reduce the sedimentary loading in air-flow, delay or stop Sand dune moves forward, to reach to weaken or avoid the purpose of hazards of sand storms.For a long time, the harm that prevents and control sandy storm (is controlled Husky) measure, Chinese scholars it be summarized as engineering sand control (mechanical) measure, controlling sediment by plant measure and Chemistry sand control measure three major types.Controlling sediment by plant measure and engineering sand control measure belong to reduction wind speed, weaken dust storm Intensity of flow, chemical sand-fixing is then consolidation Shamian Island, controls Shamian Island wind erosion process development.

Vegetative sand control is also called sand consolidation with biologic, is by the means such as fencing and serike, reaches to prevent and treat desert, Stablize oasis, improve husky district's environmental quality and a kind of technical measures of productive potentialities.Vegetative sand control why can Enough tackling quicksands, one is owing to psammophytes has the root system of prosperity, can consolidate sandy soil granule about, In addition the accumulation of dry branches and fallen leaves, is conducive to organic gathering, promotes the pedogenesis of sandy soil, change after rotting Become sand ground character, make drift sand tend to stable；Two be due to serike on sand dune after, add the thick of earth's surface Rugosity, thus also increase the resistance to wind, reduce wind speed, weaken and inhibit stream activity.

The main method of vegetative sand control includes: (1) envelope sand-base cultivation grass, protects natural vegetation；(2) afforestation Fix the sand；(3) desert edge wind prevention and sand resistance forest belt is built；(4) the internal shelter belts to protect farmland net in oasis is built.

Vegetative sand control can improve the ecological condition in vegetative coverage sand territory, promotes that sandy plant community is to good direction Development, forms stable ecosystem, is conducive to increasing bio-diversity.

But, sandy soil local climate arid, cold and hot drastic change, wind great Sha is many, and natural environment is the harshest, always Being not suitable for the growth of plant on body, therefore, the effect of vegetative sand control is limited by sandy soil characteristic and natural environment System, particularly under conditions of without irrigating, such as the time arid especially, due to water deficient, can make cultivation The plant undergrowth planted or mortality.

Sand-prevention engineering measure is to utilize weeds, crotch, and cob wall or other structures etc. set air partition on drift sand Or covering Shamian Island, prevent Sand Movement.Engineering sand control measure has fast feature of producing effects, but the protection phase is short, The most often it is applicable to the traffic line of drift sand serious harm, important industrial and mineral base, farmland and the area in residential area, And use during for protection sand-fixation plant growth.Main method has: the husky fence (high vertical sand barrier) of resistance, machinery Sand-protecting barrier (setting straw checkerboard barrier sand-protecting barrier), clay fix the sand soil, transporting sand engineering (lower wind-guiding, feather row and sediment transport section Etc. type).

The mechanical function principle of engineering control measure, is all the resistance of motion by increasing stream, and retardance disappears Can, make it slow down and promote the deposition of sandy soil granule, being a kind of provisional sand proof measure, for sandy soil Harm, function only as fixing the sand the effect of " controlling table ".

Chemical sand-fixing be moving dunes () upper spray chemical bonding material, formed on drift sand surface and cover Layer, or penetrate in the sand of top layer, loose sand material bonding is got up to form bonding course (duricrust), thus prevents wind Sand material is blown and is raised and carry by power, reaches tackling quicksand, prevents and treats the purpose of sand damage.Chemical sand-fixing is the most multiplex The area of heavy economic losses is caused, (such as airport, traffic line (railway, highway), military affairs in hazards of sand storms Facility and important industrial and mining area), and often match with vegetative sand control, complementary and transitional as vegetative sand control Measure.

The effect of chemical sand-fixing effect, not only with the character of drift sand surface particles (such as chemical composition, mechanical group Become) relevant, and also (as big in molecular structure, molecule with the physicochemical properties of chemical sand fixing material itself Little, viscosity, absorption affinity) etc. relevant.Chemical sand fixing material conventional as asphalt emulsion, oil Ye Yan ore deposit liquid, Synthetic resin, synthetic rubber etc., it is possible to use some natural organic matters, such as brown coal, peat, municipal refuse Refuse, resin etc..

Asphalt emulsion is that our times various countries apply widest material in chemical sand-fixing engineering.But, breast Change Colophonium the most also there is also because of the asphalitine in Colophonium and resin be prone to by the oxygen in air, light, heat, Moisture and microorganism etc. destroy, and oil content declines.The gradually aggravation of this change, causes asphalt performance to degenerate, As softening point raises, needle penetration declines, and ductility reduces, and causes unity layer slowly to become fragile, harden, and loses Plasticity, occurs aging, so that finally ftractureing and being destroyed by wind sapping, loses sand fixation.

(3) the basic difficult and problem of existence of desert treatment

The improvement of sandy soil is identical with aforementioned control of desert mode, and ideal goal is, sandy soil can either be made stable, Again can growing plant, namely make " sandy soil large area become oasis ".But, the granule in sandy soil is discrete Granule, the basic difficulty of improvement is, the granule in sandy soil easily moves, is difficult to water conservation and stores nutrient. The most current sand control measure, people it is seen that, existing sandy soil and desert control method are far away from all Granule in upper solution sandy soil easily moves, is difficult to water conservation water-retention and stores this two hang-up of nutrient.

Existing sandy soil administering method is identical with desert control method, to fix the sand, no matter uses engineering (machine Tool) measure, plant measures and chemical, it from the attribute improving sandy soil itself, is not only avoided Husky, mobile the caused harm of sandy soil, therefore from its method and mode, still falls within passive improvement, Desertification can be overcome to a certain extent or in the short term, be but difficult to fundamentally solve sandy soil difficult With water conservation water-retention and be difficult to store nutrient a difficult problem, " sandy soil change oasis " that distance it is desirable to still has bigger Distance.

1. physical aspect (the naturally occurring that engineering (mechanical) measure can temporarily change desert, sandy soil exist Mode), it is a kind of provisional measures for sand prevention, for the harm of drift sand, functions only as fixing the sand " controlling table " Effect, sandy soil are of short duration is tamed, it is impossible to reach the effect of " effecting a permanent cure ", long-time after, sandy soil still can Recover its true colours.

2. chemical sand-fixing is the surface using sand-consolidating agent to be sprayed on sandy soil or desert, to reach the purpose fixed the sand, Sand-consolidating agent, to surface sandy soil particle confinement, forms one at sandy soil particle surface and stablizes containment vessel, and then make sand Soil stabilization, does not flows.But, chemical sand-fixing materials often uses spray method to be formed, and is only capable of at sandy soil, sand Forming constraint in the scope that surface is the thinnest, the constraint that surface is formed once is destroyed, it may be difficult to recover, and And chemical substance weatherability determines its sand control and can only temporarily block the flowing of sandy soil, it is impossible to reach long-term stability Purpose, its cost put into height.

The earliest, spraying the sand-consolidating agent used is often emulsified asphalt, and after sprinkling, sandy soil surface skining is the thickest Spending little (usual 2～3cm), after using the several years (usual 3～5 years), bonding course starts to crush；Meanwhile, The emulsified bituminous materials sprayed, to environmentally undesirable, and itself is not the nutritional labeling of plant growing, therefore its Effect is only fixed the sand；Additionally asphalt material aging is poor, will not have sand fixation after break inactivation.

At present, it has been developed that many macromolecular sand-fixation agents, after sprinkling, sandy soil surface skining thickness is thin (logical It is often 0.2～0.5cm), surface retains few, and dried surface is the most cracking；Meanwhile, after sand-consolidating agent sprays, It is generally required to certain time consolidation, being difficult to meet water-dispersible again or dissolve after consolidation, its water retention is the most logical Cross close top layer part hole, part blocks underground evaporation of water and realize, its material itself there is no water conservation Effect；Further, cortex itself does not have water-retaining property, it is impossible to storage nutrient, it is impossible to adapt to generally giving birth to of plant Long.So, the feature of sand-consolidating agent and fix the sand its long-term behaviour fixed the sand of structures shape of layer and be difficult to obtain root This guarantee.

3. the applicable elements of vegetative sand control is frequently subjected to the restriction of weather and environment

Vegetative sand control utilizes plant top resistance sediment barrier husky, utilizes the root of plant to fix the sand, it is possible to a certain degree Upper change micro climate and micro-soil environment, but, the basic difficulty of vegetative sand control is desert, sandy soil itself It is unfavorable for plant growing, as unstable in sandy soil and wind-driven sediment is frequent, sandy soil are barren, water deficient and being difficult to Plant is all had a negative impact by water conservation, homoiothermic etc..

Wind-driven sediment can make plant by deflation, sand buries and sand cuts harm, and wind-driven sediment can use engineering protection Measure and chemical sand-fixing solve, but, Sandy Soil Moisture is not enough and is difficult to a basic difficult problem for water conservation water-retention, makes biography The suitability of system vegetative sand control receives greatly restriction.

In sum, it is desirable to obtain a kind of sandy soil control measures, though sandy soil have the same stability of soil, Water-retaining property, breathability also have the function storing nutrient, it is, make sandy soil " soil ", from root Solve sandy soil in basis easily to move, be difficult to water conservation water-retention and a difficult problem for storage nutrient so that it is plant preferably is raw Long, and then fundamentally improve the form of sandy soil and carry out sandy soil improvement.

Summary of the invention

In view of this, it is an object of the invention to provide the manufacture method of a kind of modified sandy soil, obtained changes Property sandy soil have the same stability of soil, water-retaining property, breathability and have storage nutrient function, also It is exactly to make sandy soil " soil ", fundamentally solves sandy soil and easily move, be difficult to water conservation water-retention and storage A difficult problem for nutrient so that it is plant growing preferably, and then fundamentally improve the form of sandy soil and carry out sandy soil Administer.

The manufacture method of the modified sandy soil of the present invention, comprises the following steps:

A. take and can be dissolved in the solid organic materials of water and be dissolved in water, formed and there is caking property and adhesion The solution of property；

B. after uniform to the solution of step a gained and sandy soil mix, modified sandy soil is i.e. formed；

After the described solution with caking property and adhesiveness and sandy soil mix can adhesion sandy soil granule, formation Modified sandy soil is pellet pores structure；Moisture in the described solution with caking property and adhesiveness can be with molten Liquid sticks between sandy soil granule；After moisture evaporation in the described solution with caking property and adhesiveness, its In the solid organic materials that can be dissolved in water can bond sandy soil granule and meet after water and can again be dissolved in the water And formed and there is caking property and the solution of adhesiveness and adhesion sandy soil granule.

The invention also discloses the manufacture method of a kind of modified sandy soil, comprise the following steps:

A. take sandy soil, water and the solid organic materials of water can be dissolved in；

B. by taking sandy soil, water and the solid organic materials of water can be dissolved in mix in any order also in step a Modified sandy soil is i.e. formed after mix is uniform；

The described solid organic materials that can be dissolved in water is dissolved in the water and is formed and have the molten of caking property and adhesiveness Liquid adhesion sandy soil granule and form the modified sandy soil with pellet pores structure；Described have caking property and glue Moisture in the solution of attached property can stick between sandy soil granule with solution；Described have caking property and adhesion Property solution in moisture evaporation after, the solid organic materials that can be dissolved in water therein can bond sandy soil granule And can again be dissolved in the water after chance water and formed and there is the solution of caking property and adhesiveness and adhesion sandy soil Grain.

Further, after there is between the sandy soil granule of modified sandy soil the water evaporation in caking property and adhesiveness solution, Sandy soil granule is bonded together by solids mass-energy therein；Described have in caking property and adhesiveness solution After water evaporation, the weight ratio that can be dissolved between the solid organic materials of water and modified sandy soil therein is 1:30-8000；

Further, between the sandy soil granule of modified sandy soil, there is interconnected pore and dead-end pore；

Further, in step a, the described solid organic materials that can be dissolved in water includes natural polymer and changes One or both and above mixture in property material and synthetic high polymer matter；

Further, in step a, it is also added with being scattered in the natural polymer in described solution and modification thereof One or both and above mixture in material and synthetic high polymer matter.

Further, in step b, be also added with organic polymer auxiliary agent, little molecule auxiliary agent, surfactant without Machine reactive powder or powder material, inorganic inactive powder or powder material, solid substance and pH value instrumentality One or both and above mixture in matter；

Further, the described solid organic materials that can be dissolved in water is polyvinyl alcohol, polyethylene glycol oxide, poly-second two One in alcohol, sodium polyacrylate, sodium carboxymethyl cellulose, hydroxypropyl methyl cellulose and cellulose ether or Two kinds and above mixing or copolymer.

Beneficial effects of the present invention: the modified sandy soil that the manufacture method of the modified sandy soil of the present invention is obtained has It is similar to the characteristic of soil, such as from stability, both there is between soil particle time wet certain knot Make a concerted effort, the change that granule arranges can occur again, so, soil time wet presents viscoelastic to a certain extent Plastic property；And node between soil particle time dry is restrained, the restrained power of arrangement between granule is solid It is fixed, so soil when doing presents certain solid property, therefore, when the soil time the wettest is still done Soil, the modified sandy soil of the present invention i.e. has this mechanical stability；From water-retaining property, storage nourish one's nature can, Can store moisture, nutrient and air between soil particle, and after moisture evaporation can also re-absorption moisture, And the modified sandy soil of the application i.e. has water conservation water-retention and the characteristic of storage nutrient.

The modified sandy soil that the present invention is obtained makes general sandy soil " soil ", fundamentally changes sandy soil Interaction relationship between granule, constitutes the pellet pores structure with adhesion (cohesive strength), makes sand Soil possesses stable and storage moisture, the performance of nutrient as soil；Obtain inhaling by sandy soil modification Receive moisture, store moisture, nutrient and air and there is the modified sandy soil of certain mechanical stability, it is possible to for planting The growth of thing provides solid condition, is the measure preferably administering sandy soil；Meanwhile, modified sandy soil also can conduct Utilize the means of the husky resource of desert, sandy beach, sand ground, carry out plant growing.

The modified sandy soil that the employing present invention is obtained is when sandy soil are administered, and other sandy soil of prior art are controlled Reason measure is compared, and the present patent application has the advantage that

1. compared with fixing the sand with engineering

Engineering Sand-fixing Measures changes drift sand formation, the roughness on sandy soil surface, does not improve the structure of sandy soil self Composition and the way of restraint, only serve the effect that physics improves.The present invention improves sandy soil by bonding material Granule composition rule, while improving the way of restraint of sandy soil granule so that it is structure has water conservation, storage Water, the function of holding nutrient, it is, make sandy soil " soil ", this modified sandy soil is more suitable for plant Growth.

2. compared with chemical sand-fixing method

The present invention is embodied in many aspects from the different of chemical sand-fixing.

First, present invention achieves " soil " of sandy soil, with chemical sand-fixing realize method and make apparatus There is fundamental difference.

The present invention uses will be had water conservation, bonds and stores constraint material and the sandy soil that nutrient function etc. acts on The method of mix, its effect can realize " soil " of sandy soil, and can plant various plant, and chemical Fixing the sand only by the method for surface spraying chemical sand-fixing materials, its effect is only capable of realizing the consolidation of surface sandy soil, anti- The only movement of sandy soil.Constraint material and sandy soil mix under certain condition that the present invention uses form modified sandy soil, Formed modified sandy soil have water-retaining property, storage support function, and the present invention use constraint material formed change Property sandy soil in dry, wet two states, all there is good stability, the constraint of formation can be according to dry and wet state Change and reconfigure, change.The present invention is the overall constraint system changing sandy soil, and only strengthens sandy soil table The constraint system in face is essentially different.The present invention is used for transforming sandy soil, can be by sandy soil surface 3～50cm Sandy soil be fabricated to modified sandy soil, and then make sandy soil be difficult to flowing, be provided simultaneously with the moisture that plant growing is indispensable And nutrient, reach the purpose of basic sand control.Chemical sand-fixing measure is passed through at sandy soil surface sprinkling chemical sand-fixing materials, By the infiltration (length of penetration is generally less than 3cm) of sand-consolidating agent, the constraint of surface sandy soil is strengthened, only change Becoming the way of restraint on sandy soil surface, its degree of depth is the most shallower, and its constraint has irrecoverability, to natural ring The impact in border is relatively big, and ordinary disbursements is high.The effect of chemical sand-fixing layer itself is single, can only provide consolidation, Not there is the function of water conservation, water storage, and nutrient.

The present invention and the intensity mechanism fundamental difference of chemical sand-fixing.

Chemical sand-fixing is the consolidation by realizing surface sandy soil at sandy soil surface sprinkling chemical consolidation material, for Playing the effect of the overall sandy soil of consolidation, surface sandy soil requirement of strength is higher, comprcssive strength even to exceed 1MPa could really prevent destruction and the movement of sandy soil, and the present invention is then in the range of certain thickness, by sand Soil with there is bonding, the constraint material of water retaining function mixes, it is achieved entirety sandy soil constraint each other, The movement of sandy soil to be prevented, must retrain between sandy soil and be not required to the most by force, and this point can carry out analogy with soil, From the point of view of test, after using the present invention, sandy soil are in a way, it is achieved that " soil ", although pass through Regulation constraint material type and consumption, can accomplish sufficiently high by the surface consolidation strength of sandy soil completely, but Test and analysis show, the surface comprcssive strength of sandy soil can play the effect of stable sand in the least scope, Chemical sand-fixing effect can be reached, achieve again " soil " of sandy soil, Ji Ketong in the range of certain thickness Time planting plants, it is achieved fix the sand native and eucyclic purpose again.

Compared with chemical sand-fixing, the present invention also has the restorability of destruction.

The performance of the constraint material that the present invention uses determines the feature of the restorability of the destruction of modified sandy soil, The constraint material that the present invention uses is dissolvable in water in water, and liquid object and sandy soil mix after dissolving are formed modified husky After soil, moisture therein is difficult to lose, even if after loss of water, if meeting water again, constraint material can be the most molten In Xie Yushui, re-form the modified sandy soil of same purpose, and this process can the most repeatedly, therefore this The modified sandy soil of bright formation has the restorability of destruction, but chemical sand-fixing is the most entirely different, and chemical sand-fixing is adopted Material behavior determine the irrecoverability of destruction, chemical sand-fixing in order to ensure surface sandy soil consolidation, Higher frequently with intensity and not there is the sand fixation material of reversal properties, but surface strength is once destroyed, it is impossible to Recovering on original base, sprayed on material could recur and arrive consolidation the most again, and otherwise surface sandy soil break again After Huai, sandy soil below are exposed to surface again, accumulate over time, and original effect of fixing the sand will progressively Lose, fix the sand purpose and effect just cannot ensure.

As can be seen here, the present invention makes the method for modified sandy soil and by the infiltration of chemical sand-fixing materials by mix The method fixed the sand is inherently different.

3. compared with vegetative sand control method

The present invention with the fundamental difference of vegetative sand control is, vegetative sand control can only " be taken stopgap measures ", and the present invention be from Fundamentally change sandy soil character, it is achieved sandy soil " soil ", thus realize vegetative sand control truly, Therefore the present invention is only the arranging of " effecting a permanent cure " that sandy soil are administered.

The mode utilizing vegetation rhizome to retrain sandy soil plays the effect fixed the sand, but sandy soil self property is also Being not suitable for plant growing, moisture easily runs off, and sandy soil also cannot be stablized, and under wind effect, sandy soil move frequently, Plant is difficult to grow, even if short-term plant growing, in the presence of a harsh environment, if moisture can not effectively preserve, plants Thing is also difficult to continued growth, the most withered, and therefore the effect of vegetative sand control is not only by local climate condition Limit, be also difficult to realize its effect fixed the sand for a long time.The present invention then has fundamental difference with vegetative sand control.This Invention is that the performance improvement of the basic point from vegetative sand control, i.e. sandy soil is started with, it is achieved " the soil of sandy soil Change ", not only there is the effect of stable sand, also make sandy soil have water conservation, water-retention, the function of storage nutrient, Sandy soil are made to have possessed the condition of plant growing, it is achieved that stable and the condition of plant growing, the plant species of sandy soil Planting and also could really realize, therefore for certain angle, the present invention is only the vegetative sand control of real meaning.

In order to contrast the effect of the present invention and vegetative sand control, the present invention has also carried out contrast test.By this Bright method take sodium carboxymethyl cellulose as modified sandy soil has the material of bonding, water retention, by This forms modified sandy soil, by making while of modified sandy soil and moistening common sandy soil in outdoor crushed stone, and paving Building thickness and be 15cm, and dispense multiple Semen Allii Tuberosi and grass seed on surface respectively, after 1 day, common sandy soil become dry, Modified sandy soil remains in that wetting state behind some skies, and on the premise of not watering, modified sandy soil surface Grass seed and Semen Allii Tuberosi germinate, but the grass seed on common sandy soil surface and Semen Allii Tuberosi are withered again after germinateing and thirst, modified sandy soil After the plant of upper plantation, once water and can meet the water demand of plant in interval for 10-30 days, modified Seedling on sandy soil grew up through 2 years, had reached about two meters, the Fructus Lycopersici esculenti that modified sandy soil is planted and dish Seedling Can normally eat, suitable with planting plants growing way in soil.After planting 1 year, sandy soil are joined by root system of plant For netted, and the outward appearance of soil, character are all without difference, and the plant that former years rot can be described as again nutrient, sandy soil The most stable, the plantation effect of modified sandy soil forms benign cycle, and sand fixation is the most feasible, economical, Also make sandy soil become fertile soil to be possibly realized.

4. compared with other method: such as water-absorbing resins

Super absorbent resin is containing strongly hydrophilic group, is generally of the macromolecular material of certain degree of cross linking. Super absorbent resin is water insoluble and organic solvent, and water absorbing capacity is generally the hundreds to thousands times of own wt. After the water suction of this material swelling for hydrogel, after pressurized, water is not easy to extrusion；Resin is dried, can be the most Secondary water suction, its moisture overwhelming majority absorbed can slowly discharge, and utilizes for plant absorption.

The constraint material that super absorbent resin and the present invention use has essential distinction.The constraint material of the present invention There is caking property and adhesiveness, there is water solublity, the caking property of dependence constraint material and adhesiveness and sandy soil shape Become constraint.This constraint can present different character along with dry, wet change, and constraint also can reconfigure.

5. the present invention has significant economy, exploitativeness and the feature of environmental protection.

First, the modified sandy soil that the present invention is formed is compared with existing sand fixing technology, and its disposable investment construction becomes Originally there is certain economic benefit.The constraint material that the present invention uses can be formed under conditions of volume is minimum Meet require modified sandy soil, as take some solid organic materials that can be dissolved in water include natural polymer and One or both and above mixture in its modified solid matter and synthesis macromolecule solid matter；As: Polyvinyl alcohol, polyethylene glycol oxide, Polyethylene Glycol, sodium polyacrylate, sodium carboxymethyl cellulose, hydroxypropyl first One or both and above mixing in base cellulose and cellulose ether or copolymer, constraint material only accounts for sand Soil a few one thousandth of part by weight, and material is for commonly using chemical materials, material cost is relatively low, therefore from former Say in reason that material cost is relatively low, and construction method is the most relatively simple, only with the common process such as stirring, machine Tool, labour cost are relatively low, and therefore comprehensive method of investment cost will have considerable economy.With carboxymethyl cellulose As a example by element sodium, adding 20kg sodium carboxymethyl cellulose material in 1 cubic meter of water, market unit price is 10 yuan/kg； Correctability sandy soil about 4 cubic metres, it is considered to artificial, machine cost 100 yuan, then modified sandy soil 1 cubic metre, Cost is 75 yuan, is layed in sandy soil surface by 10cm, and 1 cubic metre of modified sandy soil can lay 10 square metres, Then modified sandy soil administers the disposable input cost of sandy soil is 7.5 yuan/square metre.

Secondly, different from conventional sand-fixation method, the modified sandy soil that the present invention is formed has recyclability, once After investment construction, modified sandy soil can plant various plant, and modified sandy soil, husky physical ability stablize root system of plant, and The root system of plant stable sand the most in turn, Sha Ti, and rot rhizome, leaf etc. again can as nutrient, Forming benign cycle for sandy soil transformation, sandy soil will actually change available class land resource, and have and once throw Money long-term gain feature, therefore its indirectly economy by inestimable.

Exploitativeness of the present invention is stronger.The present invention uses material to be existing chemical industry common used material, such as poly-second Enol, polyethylene glycol oxide, Polyethylene Glycol, sodium polyacrylate, sodium carboxymethyl cellulose, hydroxypropyl methyl are fine Dimension element and cellulose ether are the thickening material that chemical industry is conventional, and production method is simple, feasible, and cost is relatively low, The construction method that additionally present invention uses is simple, and master operation is point preparation being spread on sandy soil solution and modification sand The mix of soil, therefore the present invention is prone to grasp, and implementation is stronger.

The present invention also has the feature of environmental protection, the constraint material of the present invention, can use the material rich in nutrition, its Itself can be the growth necessary nutrient of offer of plant, it is possible to add the necessary nutrient of plant growing wherein. The dry and wet that sandy soil are retrained according to sandy soil by the present invention can reconfigure, change, and has restorability.This The constraint material of invention uses conventional material, and such as sodium carboxymethyl cellulose, itself is also food additive, Environmentally safe, expense is low, it is easy to implement.

In summary it can be seen, the technical measures of present patent application achieve sandy soil soil from principle, can be from Fundamentally play the effect of sand control.

Detailed description of the invention

It is of course also possible to employing following steps:

The described solid organic materials that can be dissolved in water is dissolved in the water and is formed and have the molten of caking property and adhesiveness Liquid adhesion sandy soil granule, the modified sandy soil of formation is pellet pores structure；Described have caking property and adhesion Moisture in the solution of property can stick between sandy soil granule with solution；Described have caking property and adhesiveness Solution in moisture evaporation after, the solid organic materials that water can be dissolved in therein can bond sandy soil granule and Meet and can again be dissolved in the water after water and be formed and there is the solution of caking property and adhesiveness and adhesion sandy soil Grain.

Two kinds of methods obtaining modified sandy soil do not have essential distinction, regardless of order by merging, ultimately form There is the material in the solution of caking property and adhesiveness there is thickening property and water solublity, could obtain caking property and The solution of adhesiveness, it is achieved goal of the invention；General requirement has caking property and the solution of adhesiveness and sandy soil are (mixed Conjunction order does not limits) modified sandy soil that formed after mix has the feature of plastically deformable or formed diluter After state and moisture evaporation, there is plasticity.

In the present embodiment, there is between the sandy soil granule of modified sandy soil the water in caking property and adhesiveness solution and steam After Faing, sandy soil granule is bonded together by solids mass-energy therein；Described have caking property and adhesiveness is molten After water evaporation in liquid, the weight ratio that can be dissolved between the solid organic materials of water and modified sandy soil therein is 1:30-8000；The modified sandy soil formed in this proportion can be better achieved the modification of sandy soil, and it is special Property more can press close to the soil of applicable plant growing.

In the present embodiment, between the sandy soil granule of modified sandy soil, there is interconnected pore and dead-end pore；The present invention Modified sandy soil porosity can be more than the porosity of discrete sandy soil, also greater than the interconnected pore rate of normal soil, And sandy soil have soil characteristic；This hole can store moisture, nutrient and air so that it is has more soil special Property, adapt to plant growing.

In the present embodiment, in step a, the described solid organic materials that can be dissolved in water include natural polymer and One or both and above mixture in its modified solid matter and synthesis macromolecule solid matter；As: Polyvinyl alcohol, polyethylene glycol oxide, Polyethylene Glycol, sodium polyacrylate, sodium carboxymethyl cellulose, hydroxypropyl first One or both and above mixing in base cellulose and cellulose ether or copolymer；With low cost and play The solid matter of expectation function is main；The solid organic materials that can be dissolved in water is not limited to above-mentioned listed solid-state Material, has the solid matter same or like with listed solid matter character and all can realize purpose, and premise is The solution with caking property and adhesiveness ultimately formed, and this solid matter has thickening property and water in water Dissolubility, could realize goal of the invention, not repeat them here.

In the present embodiment, in step a, be also added with being scattered in the natural polymer in described solution and One or both and above mixture in modified material and synthetic high polymer matter.

In the present embodiment, in step b, it is also added with organic polymer auxiliary agent little molecule auxiliary agent, surfactant Inorganic active powder or powder material, inorganic inactive powder or powder material, solid substance and pH value regulation One or both and above mixture in material；Live in organic polymer auxiliary agent, little molecule auxiliary agent and surface Property agent optional such as glycerol, tetramethylolmethane, triethanolamine, alkyl carboxylate, alkyl sulfate, alkyl The primary ammonium salt of phosphate, alkylsulfonate, alkyl trimethyl ammonium chloride, alkyl, the secondary ammonium salt of alkyl, alkyl tert Ammonium salt, alkyl quaternary ammonium salts, beet alkali surface activator, amino acid type surfactant, fatty alcohol polyoxy second Alkene ether, alkylphenol polyoxyethylene, polyoxyethylene alkyl amine, polyoxyethylene alkylamide, polyol type table Face activating agent etc.；Improve or regulate solution caking property in modified sandy soil, adhesiveness, toughness, levelling Property, dispersibility or water solublity, water absorption, foaminess, defoaming are or/and construction workability etc.；The most inorganic Reactive powder or powder material and inorganic inactive powder or powder material optional such as kieselguhr, swelling Soil, white carbon, flyash, Pulvis Talci, calcium powder and other inorganic powder etc., improve or regulate modified sandy soil Grating or the water suction of modified sandy soil, water conservation, toughness reinforcing performance；Solid substance can be carried in sandy soil A little entity foreign material, or later stage interpolation, such as rigidity or flexible fiber, fabric, rattan, film tape, sheet Deng, improve or regulate the stability of modified sandy soil, crack resistance or toughness；PH value Auto-regulator, such as adds Auto-regulator sour, alkaline, such as Calx, Cosan, ferrous sulfate powder, vinegar liquid, pine soil, phosphoric acid Potassium dihydrogen solution and other improve or regulation modified sandy soil Acidity of Aikalinity material.

The organic polymer auxiliary agent added, little molecule auxiliary agent, surfactant, inorganic active powder or powder On grain material, inorganic inactive powder or powder material, solid substance and pH value Auto-regulator are not limited to Stating listed material, have the material same or like with listed physical property and all can realize purpose, premise is right Soil characteristic in modified sandy soil has facilitation, does not repeats them here.

Certainly, in step b, also can add water-absorbing resins, also can add such as modified starch, modified fibre Element, polyacrylate and copolymer analog, polyacrylamide and copolymer analog thereof, polyvinyl alcohol, polyoxy Ethylene ethers, soybean protein class, fibroin class, pectin, alginic acid, chitosan and modifier thereof, high water suction Property being blended of resin, the complex etc. of super absorbent resin and inorganic matter gel, improve the water suction of modified sandy soil And storage capacity；Or add fertilizer, inorganic fertilizer and composite organic-inorganic fertilizer, such as compoiste fertilizer, nitrogen Fertile, phosphate fertilizer and potash fertilizer or two-nutrient compound fertilizer nitrogen phosphorus, nitrogen potassium and the binary compound fertilizer of phosphorus potassium and N P and K NPKs etc., increase the character of modified sandy soil, level etc. of increasing soil fertility, all can improve modification The combination property of sandy soil, is suitable for plant growing.

In the present embodiment, described in there is the water evaporation in caking property and adhesiveness solution after, therein can be dissolved in Weight ratio between solid organic materials and the modified sandy soil of water is 1:100～4000.

Experiment shows, it is possible to is repeatedly dissolved in the water and has thickening property and water solublity in water, then can Enough formation has the material of caking property and adhesiveness solution and has multiple, such as: polyvinyl alcohol, polyethylene glycol oxide, In Polyethylene Glycol, sodium polyacrylate, sodium carboxymethyl cellulose, hydroxypropyl methyl cellulose and cellulose ether One or both and above mixing or copolymer；After being dissolved in the water, can not only be at bigger volume In the case of (moisture evaporation after solid content) (such as mass percent be 5～10%, even 10～20% or Person more than 20%) make the solution with caking property and adhesiveness, and can be in the situation of less volume Under, such as less than 5%, even less than 1%, make the solution with caking property and adhesiveness.During use Also can add some auxiliary agent, improve or improve caking property and the adhesiveness of solution further；Inorganic substances with have Machine material can also compound, to obtain our the desired solution with caking property and adhesiveness.

Sandy soil are mixed with the described solution (containing nutrient) with caking property and adhesiveness and after mix, just can It (can also be sandy soil, water and energy that enough formation has soil property, granule+constraint+hole modified sandy soil The solid organic materials being dissolved in water is formed by different order mixing mix)；When wet, moisture and nutrient are deposited Storage in the solution and solution sticks in the hole between sandy soil granule, so, modified sandy soil not only has The character that water conservation storage is supported, and there is the viscoelastroplasticity character as wet soil；When dry, Yuan Xianrong Bond after the solid organic materials consolidation that can be dissolved in water in Xie Yushui the granule between modified sandy soil, so, Modified sandy soil has the character of the porous solid as dry soil, and, the material energy after described consolidation Enough absorb moisture and be again dissolved in the water, so, modified sandy soil also has absorption moisture (containing nutrient) Ability.

In the modified sandy soil structure of granule+constraint+hole, owing to making sandy soil granule produce adhesion (cohesive strength) Constraint this as added enter material (being solution when moisture is big, moisture hour is gradually converted into solid), thing After matter filling pore, the hole of modified sandy soil can be less than the hole of unmodified front discrete sandy soil, but, Owing to, after the solution mix that sandy soil and material are formed, being no longer the most directly to contact between sandy soil granule, Described material is had so that spacing between sandy soil increases (and in the solution that material is formed between contact point Moisture evaporation after, the solid content of material itself is less, and its ratio occupying hole is little), therefore, along with The change of " loose " " tightly " of contact between Li, the hole of modified sandy soil can also change more than being even far longer than The hole of the discrete sandy soil before property, to sum up, the hole of modified sandy soil both can be less than, can also be more than modification The hole of front discrete sandy soil, experiment shows, the porosity of modified sandy soil can change between 10～80%, This porosity ranges is not only greater than discrete sandy soil, and more than almost all kinds of soil, this indicates that, We can regulate the porosity of modified sandy soil by different proportionings and structure, make sandy soil contain it is desirable that Moisture, nutrient and air.Moreover, in the pellet pores structure of modified sandy soil, both there is intercommunicating pore Gap, it may have dead-end pore, wherein interconnected pore rate is 5～70%, and modified sandy soil can pass through interconnected pore With the exchange that outside occurs water and air.

Due in the structure of granule+constraint+hole in modified sandy soil, the restraining forces of constraint material (material) with And the porosity of modified sandy soil can regulate, so, after the moisture evaporation in modified sandy soil, the picture of formation is dry The intensity of the porous solid that earth is the same can regulate in a scope the biggest, and intensity is at below 10Kpa Time, modified sandy soil is the more loose solid of ratio, and when intensity is between 10～50Kpa, modified sandy soil is molding The most loose solid, after intensity is more than 50Kpa, modified sandy soil gradually toughens, in order to obtain Modified sandy soil harder time dry, can be retrained by regulation and porosity so that it is intensity reaches 200Kpa Above.

The modified sandy soil become by sandy soil, is exactly a kind of " native " on mechanical state, has rheology (time wet) With solid (dry time) two states, and, " native " of dry solid state can turn after absorption moisture Turn to " native " of wet rheology, and " native " of wet rheology can convert after moisture evaporates For " native " of dry solid state, by the constraint between regulation granule and space, we can regulate modification The rheology (such as viscoelastroplasticity) of sandy soil this " native " or solid property, obtain from " sandy soil " to " earth Soil " arrive " native " of variety classes plant growing various between " clay ", suitable；Therefore, pass through Sand is become " native " by the modified sandy soil of the present invention, for available sandy soil, the mode of desert.

According to modified purpose, construction requirement or the difference of economy, low viscous solution (viscosity can be prepared Below 100mpa s), it is also possible to (viscosity is at 100mpa s～5000mpa s to prepare moderately viscous solution Between), can also configure full-bodied solution (viscosity be more than 5000mpa s) and sandy soil mix and formed and change Property sandy soil.

After preparation forms modified sandy soil, due to modified sandy soil and the extraneous exchange that moisture can occur, so, In modified sandy soil, the water content of solution can change, and then, the viscosity of the solution in modified sandy soil except with The material behavior of the material added is relevant and outer, also relevant to the change of water content, but described in there is bonding Property and adhesiveness solution in moisture evaporation after, the solid content of material is geostationary, so we are permissible Using the weight ratio of the material that added and sandy soil as controlled quentity controlled variable, determine the volume of described material.According to material The difference of character, add material in the solution with caking property and adhesiveness in modified sandy soil kind and Volume can select in a bigger scope, after moisture evaporation, and the material added and modified sandy soil When weight ratio is in the range of 1:30～8000, we all can obtain requiring based on different modified purposes and expecting The modified sandy soil obtained.

The modified sandy soil obtained based on particle confinement principle, its constraint can not only produce between sand grain Adhesion, and adhesion can be produced between sandy soil and other material, so doped with in right amount in sandy soil Gravel, plant roots, stem, skin, animal wastes, corpse residue etc. time, will not change and have in its main body There is the character of soil characteristic, so, method based on particle confinement, we are possible not only to transform simple sand Or sandy soil, and the wasteland containing sandy soil He other material such as Gobi desert can be transformed；Utilize this character, I Even can add rigidity or flexible fiber, fabric, rattan, film tape, sheet etc., improve or regulate and change The property stability of sandy soil, crack resistance or toughness；Decapacitation enough add can be dissolved in the water various fertilizer, support Exceptionally, other fertilizer also is able to be constrained in modified sandy soil, provides nutrition for plant growing；We also may be used To add water-absorbing resins, acid-alkali accommodation material etc., improve the water suction of modified sandy soil, water retention property or change The soda acid performance of property sandy soil.

The specific embodiment of the present invention:

Embodiment one:

The solid organic materials that can be dissolved in water selects polyvinyl alcohol；

Polyvinyl alcohol and water are stirred formation solution according to the weight ratio of 5:100；

Take 1000kg sandy soil, then take polyvinyl alcohol and be dissolved in the water the solution 200kg formed, add in sandy soil Enter solution, be then mixed and stirred for uniformly, forming modified sandy soil；Polyvinyl alcohol in modified sandy soil and sandy soil Weight ratio be 1:105.0；

Being paved by modified sandy soil in outdoor, paving thickness about 10cm, modified sandy soil moisture preserves good, at weight Under the weather conditions in spring of celebrating area, evaporation capacity is less, takes partially modified sandy soil, takes the measures such as drying, makes After its surface dehydration, modified sandy soil surface plate becomes entirety；Water is sprinkled upon the modified sandy soil surface after dehydration again, Material in modified sandy soil is by moisture absorption, and sandy soil are again in plastic wetting state.

Corn seed is planted in modified sandy soil, after 1 week, corn seed germination under field conditions (factors), and It is grown into, this plant no difference that growth final result is planted with soil；Certainly, modified sandy soil needs Add necessary nutrient substance, the most various fertilizer.

In the present embodiment, it is also added with following material and separately does experiment: be also added with the inorganic matter that can be dispersed in water With Organic substance (than if the material that disperses and swell in water, including starch, polyacrylamide etc.) etc. And organic polymer auxiliary agent, little molecule auxiliary agent and surfactant, the present embodiment have selected tetramethylolmethane, Triethanolamine and alkyl carboxylate, improve or regulate solution caking property in modified sandy soil, adhesiveness, glue Consistence, levelability, dispersibility, water solublity, water absorption, foaminess, defoaming are or/and construction workability； Inorganic active powder or powder material and inorganic inactive powder or powder material, the present embodiment have selected silicon Diatomaceous earth, improves or regulates grating or the water suction of modified sandy soil, water conservation, the toughness reinforcing performance of modified sandy soil；Gained Result, compared with not adding these materials, has more preferable soil characteristic.

Embodiment two:

The solid organic materials that can be dissolved in water selects hydroxypropyl methyl cellulose；

Hydroxypropyl methyl cellulose is stirred formation solution with water according to the weight ratio of 0.2:100；

Take 1000kg sandy soil, then take Gonak 190kg, sandy soil are mixed also with solution Stir, form the weight of modified sandy soil, the material hydroxypropyl methyl cellulose in modified sandy soil and sandy soil Ratio is 1:2637；

Being paved by modified sandy soil in outdoor, paving thickness about 10cm, modified sandy soil moisture preserves good, at weight Under the weather conditions in spring of celebrating area, evaporation capacity is less, meets water after modified sandy soil water evaporates again, and sandy soil grain is again Being bonded together, sandy soil are plastic wetting state.

Being paved by modified sandy soil containing grass seed in outdoor, modified sandy soil moisture preserves good, at weather in spring Under the conditions of, after 1 week, grass seed can be made in modified sandy soil under conditions of moisture to germinate, and be grown into, This plant no difference that growth final result is planted with soil；Certainly, modified sandy soil needs add necessity Nutrient substance, the most various fertilizer.

In the present embodiment, it is also added with following material and separately does experiment: be also added with the inorganic matter that can be dispersed in water With Organic substance (than if the material that disperses and swell in water, including starch, polyacrylamide etc.) etc. And organic polymer auxiliary agent, little molecule auxiliary agent and surfactant, the present embodiment have selected alkyl tert ammonium salt, Alkyl quaternary ammonium salts, beet alkali surface activator, improve or regulate solution caking property in modified sandy soil, glue Attached property, toughness, levelability, dispersibility, water solublity, water absorption, foaminess, defoaming are or/and construct Workability；Inorganic active powder or powder material and inorganic inactive powder or powder material, the present embodiment Have selected flyash and Pulvis Talci, improve or regulate the grating of modified sandy soil or the water suction of modified sandy soil, water conservation, Toughness reinforcing performance；Acquired results, compared with not adding these materials, has more preferable soil characteristic；It is also added with Some flexible fibers, fabric, rattan, film tape, sheet etc., improve or regulate modified sandy soil stability, Crack resistance or toughness；Acquired results, compared with not adding these materials, has more preferable soil characteristic.

Embodiment three:

The solid organic materials that can be dissolved in water selects sodium carboxymethyl cellulose；

Sodium carboxymethyl cellulose and water are stirred formation solution according to the weight ratio of 1:100；

Take 1000kg sandy soil, then take carboxymethylcellulose sodium solution 210kg, by sandy soil and carboxymethyl cellulose Sodium solution is mixed and stirred for uniformly, formed modified sandy soil, the material sodium carboxymethyl cellulose in modified sandy soil with The weight ratio of sandy soil is: 1:481.0；

Being paved by modified sandy soil in outdoor, paving thickness about 10cm, modified sandy soil moisture preserves good, at weight Under celebrating weather conditions in spring, evaporation capacity is less, and modified sandy soil outward appearance is similar with soil, takes partially modified sandy soil, Taking the measures such as drying so that it is after the dehydration of surface, modified sandy soil surface plate forms entirety, has some strength, If water is sprinkled upon modified sandy soil surface after dehydration again, the material in modified sandy soil is by moisture absorption, and sandy soil are again In plastic wetting state；

Chinese cabbage seed is dispensed, after 1 week, in modified sandy soil under conditions of moisture on modified sandy soil surface Make Semen Allii Tuberosi germinate, and be grown into, this plant no difference that growth final result is planted with soil；Certainly, Modified sandy soil needs add necessary nutrient substance, the most various fertilizer.

In the present embodiment, it is also added with following material and separately does experiment: be also added with the inorganic matter that can be dispersed in water With Organic substance (than if the material that disperses and swell in water, including starch, polyacrylamide etc.) etc. And organic polymer auxiliary agent, little molecule auxiliary agent and surfactant, the present embodiment have selected alkyl quaternary ammonium salts, Beet alkali surface activator, amino acid type surfactant, improve or regulate solution gluing in modified sandy soil Knot property, adhesiveness, toughness, levelability, dispersibility, water solublity, water absorption, foaminess, defoaming Or/and construction workability；Inorganic active powder or powder material and inorganic inactive powder or powder material, The present embodiment have selected bentonite and white carbon, improves or regulate the grating of modified sandy soil or the suction of modified sandy soil Water, water conservation, toughness reinforcing performance；Acquired results, compared with not adding these materials, has more preferable soil special Property；Also added some flexible fibers, fabric, rattan, film tape, sheet etc., improve or regulate modified husky Stability, crack resistance or the toughness of soil；Acquired results, compared with not adding these materials, has preferably Soil characteristic.

Embodiment four

Sodium carboxymethyl cellulose is dissolved formation solution with water according to the weight ratio of 2.5:100；

Take 1000kg sandy soil, then take carboxymethylcellulose sodium solution 173kg, by sandy soil and carboxymethyl cellulose Sodium solution is mixed and stirred for uniformly, forms modified sandy soil, the sodium carboxymethyl cellulose in modified sandy soil and sandy soil Weight ratio be: 1:237.0；

Being paved by modified sandy soil in outdoor, paving thickness about 10cm, modified sandy soil moisture preserves good, at weight Under celebrating weather conditions in spring, Water-saving effect is preferable；Modified sandy soil outward appearance is similar with soil, takes partially modified sandy soil, Taking the measures such as drying so that it is after the dehydration of surface, modified sandy soil surface plate forms entirety, if being sprinkled upon by water again Modified sandy soil surface after dehydration, the material in modified sandy soil is by moisture absorption, and sandy soil are again in plastic moistening shape State；

At modified sandy soil surface grafting peanut seed, after 1 week, in modified sandy soil under conditions of moisture Make peanut seed germinate, and be grown into, the Semen arachidis hypogaeae no difference that growth final result is planted with soil；When So, modified sandy soil needs add necessary nutrient substance, the most various fertilizer.

In the present embodiment, it is also added with following material and separately does experiment: be also added with the inorganic matter that can be dispersed in water With Organic substance (than if the material that disperses and swell in water, including starch, polyacrylamide etc.) etc. And organic polymer auxiliary agent, little molecule auxiliary agent and surfactant, the present embodiment have selected the primary ammonium salt of alkyl, The secondary ammonium salt of alkyl, alkyl tert ammonium salt, improve or regulate solution caking property in modified sandy soil, adhesiveness, Toughness, levelability, dispersibility, water solublity, water absorption, foaminess, defoaming are or/and construction workability； Inorganic active powder or powder material and inorganic inactive powder or powder material, the present embodiment have selected silicon Diatomaceous earth and bentonite, improve or regulate grating or the water suction of modified sandy soil, water conservation, the increasing tougheness of modified sandy soil Energy；Acquired results, compared with not adding these materials, has more preferable soil characteristic；Also added Flexible fiber, fabric, rattan, film tape, sheet etc., improve or regulate the stability of modified sandy soil, cracking resistance Property or toughness；Acquired results, compared with not adding these materials, has more preferable soil characteristic.

Embodiment five

The solid organic materials that can be dissolved in water selects methylcellulose and sodium carboxymethyl cellulose；

Shape after methylcellulose, sodium carboxymethyl cellulose and water are dissolved according to the weight ratio of 0.4:0.7:100 Become methylcellulose and sodium carboxymethyl cellulose composite solution；

Take 1000kg sandy soil, then take methylcellulose and solution 246kg that sodium carboxymethyl cellulose is compounded to form, Sandy soil and solution are mixed and stirred for uniformly, the material methylcellulose in modified sandy soil and carboxymethyl cellulose Sodium with the weight ratio of sandy soil is: 1:373.6；

Being paved by modified sandy soil in outdoor, paving thickness about 10cm, modified sandy soil moisture preserves good, at weight Good water-retaining property under celebrating weather conditions in spring；Modified sandy soil outward appearance is similar with soil, takes partially modified sandy soil, adopts Taking the measures such as drying so that it is after the dehydration of surface, modified sandy soil surface plate forms entirety, if again water being sprinkled upon mistake Modified sandy soil surface after water, the material in modified sandy soil is by moisture absorption, and sandy soil are again in plastic wetting state；

At modified sandy soil surface grafting Fructus Solani melongenae rice shoot, after 1 week, Fructus Solani melongenae under conditions of moisture in modified sandy soil Growing way is preferable, this plant no difference that growth final result is planted with soil.Certainly, modified sandy soil needs Add necessary nutrient substance, the most various fertilizer.

In the present embodiment, it is also added with following material and separately does experiment: be also added with the inorganic matter that can be dispersed in water With Organic substance (than if the material that disperses and swell in water, including starch, polyacrylamide etc.) etc. And organic polymer auxiliary agent, little molecule auxiliary agent and surfactant, the present embodiment have selected alkylsulfonate, The primary ammonium salt of alkyl trimethyl ammonium chloride, alkyl, improves or regulates solution caking property in modified sandy soil, glues Attached property, toughness, levelability, dispersibility, water solublity, water absorption, foaminess, defoaming are or/and construct Workability；Inorganic active powder or powder material and inorganic inactive powder or powder material, the present embodiment Have selected kieselguhr and bentonite, improve or regulate the grating of modified sandy soil or the water suction of modified sandy soil, water conservation, Toughness reinforcing performance；Acquired results, compared with not adding these materials, has more preferable soil characteristic；It is also added with Some flexible fibers, fabric, rattan, film tape, sheet etc., improve or regulate modified sandy soil stability, Crack resistance or toughness；Acquired results, compared with not adding these materials, has more preferable soil characteristic.

Embodiment six

The solid organic materials that can be dissolved in water is selected hydroxypropyl methyl cellulose and dispersibles material cation shallow lake Powder；

By hydroxypropyl methyl cellulose, dispersible material cationic starch and the water weight according to 0.2:2:100 Amount ratio stirs, and it is standby to carry out formation composite solution after Heat Gelatinization；

Take 1000kg sandy soil, then take composite solution 231kg, sandy soil and solution are mixed and stirred for uniformly, shape Becoming modified sandy soil, the alkaline soluble materials hydroxypropyl methyl cellulose in modified sandy soil with the weight ratio of sandy soil is: 1: 2168.7, the weight ratio of total material hydroxypropyl methyl cellulose in modified sandy soil and cationic starch and sandy soil For: 1:201.1；

Being paved by modified sandy soil in outdoor, paving thickness about 10cm, modified sandy soil moisture preserves good, modified Sandy soil outward appearance is similar with soil, takes partially modified sandy soil, takes the measures such as drying so that it is after the dehydration of surface, Modified sandy soil surface can bond in bulk, if water being sprinkled upon modified sandy soil surface after dehydration again, in modified sandy soil Material by moisture absorption, sandy soil are again in plastic wetting state；

In suitable season, planting wheat seed in modified sandy soil, after 1 week, wheat seeds germinate, and are grown into； Certainly, modified sandy soil needs add necessary nutrient substance, the most various fertilizer.

In above-described embodiment, along with the evaporation of moisture, modified sandy soil porosity and interconnected pore rate are in change Scope, interconnected pore rate scope is 5～70%, and generally, interconnected pore rate is 15～50%, and on an equal basis The modified husky body of proportioning is compared, and porosity is slightly smaller.

In above-described embodiment, also plantation has Fructus Lycopersici esculenti, Fructus Cucumidis sativi etc. to plant vegetables Seedling more, it is possible to plant flowers, trees etc., Equally planting the rice shoot such as Semen Maydis, Fructus Capsici, growing way is all preferable, as soil planting effect, plantation Fructus Lycopersici esculenti, Fructus Cucumidis sativi etc. also can results eating.

In above-described embodiment, listing with wider scope can solid organic soluble in water in modified sandy soil The weight ratio of matter and sandy soil, after a large number of experiments show that again, can solid organic materials soluble in water and sandy soil Weight ratio different, form modified sandy soil and also there is different, when can solid organic materials soluble in water More hour, Water-saving effect suitably reduces the weight ratio of (material determines) and sandy soil, when can be soluble in water solid When state organic substance (material determines) is the biggest with the weight ratio of sandy soil, Water-saving effect is the best, but, with this Adapting, the adhesion strength between sandy soil granule is also with solid organic materials (material determines) and sand The rising of weight ratio of soil and increase, along with the weight ratio of solid organic materials (material determines) and sandy soil Reduce and reduce；When energy solid organic materials soluble in water reaches 1:8000 with sandy soil weight ratio, change Property sandy soil still have certain water retention, still have adhesion strength, but dropped between sandy soil granule Low, and can growing plant, but must suitably water to ensure growth conditions；And when energy solid-state soluble in water Organic substance and sandy soil weight increase to 1:30, and between the sandy soil granule of modified sandy soil, adhesion strength is relatively big, Water-saving effect is preferable, but modified sandy soil itself has the phenomenon that hardens, for sand-fixing effect clearly, certainly, Can also be used for plant growing, the modified sandy soil simply with the phenomenon that hardens is unfavorable for the growth of root system of plant；Also That is, according in the present invention to can the requirement of solid organic materials physical property soluble in water, can be dissolved in The consumption of the solid organic materials in water fixes the sand the most at most, water conservation, sandy soil granule adhesion strength preferable, The most then can reduce, and above-mentioned scope is not merely 1:8000 to 1:30, also can suitably reduce or increase Greatly, the modified sandy soil of formation is respectively provided with to be expected or foreseeable effect, but is suitable for sandy soil ground or sand In desert and formed be similar to soil for plant growing then need use OK range；Certainly, same proportioning is originally Invention should have higher caking property and water-retaining property compared with modification sand body.

Above-described embodiment can not all of alternative material of limit, ratio is if dissolving and can being dissolved in water in water Solid organic materials also have a lot, do not repeat them here, all can realize goal of the invention, certainly, with low one-tenth Basis the material playing expectation function are main.

Certainly, the order by merging of said components can not limit protection scope of the present invention, can be by sandy soil, water Mix in any order with the solid organic materials that can be dissolved in water and mix and formed, after mix, described energy is molten Solid organic materials in water is dissolved in the water and forms solution adhesion sandy soil with caking property and adhesiveness Grain and formed and there is the modified sandy soil of pellet pores structure；In the described solution with caking property and adhesiveness Moisture can stick between sandy soil grain with solution；Moisture in the described solution with caking property and adhesiveness After evaporation, material therein is met and can be again dissolved in the water after water and be formed and have caking property and adhesiveness Solution and adhesion sandy soil grain；Further, being experimentally confirmed, the result of gained there is no substantially change.

On this modified sandy soil during planting plants, whole modes of planting plants in prior art soil can be used, Including membrane curing, booth growth, with the outside severe natural environment of opposing；In a word, plant with in soil Plant does not has internal to distinguish, and does not repeats them here.

Contrast shows, after the described liquid with caking property and adhesiveness is formed modified sandy soil with sandy soil mix, Pave structure sheaf again that formed in common husky body (sandy soil) surface, is sprayed directly on commonly with by described liquid Husky body (sandy soil) surface and the surface layer that formed have the difference of essence, are embodied in:

First, it is achieved fundamental difference in principle.

From the composition rule of particulate matter, modified sandy soil be built upon the present inventor propose " granule is about Bundle " on the basis of principle, it is the thinking of a kind of brand-new sandy soil " soil ".

Constraint type between common sandy soil granule is " contact ", and its contact point only exists contact pressure and friction Power, and there is no any node adhesion and combine moment (such as node pulling force and moment), therefore, sandy soil granule Can only be by contact pressure and frictional force balancing gravity and external force, its node can not bear pulling force and moment, no Then, sandy soil just will occur granule arrangement sudden change and unstability.

And after the liquid with caking property and adhesiveness is formed modified sandy soil with sandy soil mix, its granule node Between restraining forces be " adhesion ", it can either produce opposing granule between separate restraining tensile force, again can Enough producing the restraint moment that opposing granule rotates, meanwhile, it can also produce node pressure and frictional force, therefore, All degree of freedom of granule can be limited by it, but this restriction is again limited, and granule node is producing While raw constraint reaction, it is also possible to extend, rotate and slide, therefore, its constraint type and common sandy soil Fundamental difference, say, that modified sandy soil both can resist external force, again can the most limited and Stably move.On the other hand, in modified sandy soil, being constrained to of sandy soil whole interior " adheres to constraint ", this Planting constraint is to be formed after sand mix by the liquid with caking property and adhesiveness, on microscopical structure, this Planting constraint is after one layer of adhesion layer of each sandy soil particle surface uniform fold, contacts and shape between granule again Becoming, therefore, this constraint has universal property and restorability, say, that connect in arbitrfary point between granule Touching and all can form " adhering to constraint ", and after separation, contact between granule again, this binding feature can be extensive Multiple.Therefore, modified sandy soil has the viscoelastroplasticity character of even macroscopic and isotropic, with wet soil Mechanical characteristic is the same.

Once after the evaporation of the moisture in modified sandy soil, " adhering to constraint " just will become " consolidation constraint ", the most just That the spatial arrangements between sandy soil granule will be fixed, sandy soil can bearing load, there is some strength, Show as the character of porous solid, just as dry soil.Meanwhile, as it was previously stated, after meeting water, " consolidation Constraint " become " adhering to constraint " again, sandy soil are become viscoelastroplasticity body from solid.(nothing in modified sandy soil When opinion is dry or time wet), there is connection, open space all the time, with the external world, moisture, nutrient and air occur Exchange.

But, if only the described liquid with caking property and adhesiveness to be sprayed at husky body (sandy soil) surface, Being only capable of and form one layer of adhesive film on husky body (sandy soil) surface, infiltration liquid under adhesive film extremely has Limit, and after this layer of adhesive film is dry, just become solid film, it is clear that this method itself be not based on " Grain constraint " principle and draw, also with the thinking fundamental difference of sandy soil " soil ".It is sprayed on husky body (husky Soil) surface adhesion layer (be thin layer after solidification) and permeate under adhesion layer the liquid in the thinnest scope, Only defining constraint in husky surface, this constraint, by by force to weak, does not have the most even isotropism Matter, comes in and goes out the biggest with the character of soil；Adhesion layer (thin layer after solidification) resides in sand (sandy soil) Grain surface, can completely enclose the hole between husky (sandy soil) granule, this with have connect, open bore The modified sandy soil fundamental difference of gap, also with the thinking fundamental difference of soil；Constraining in modified sandy soil changes Property sandy soil inner homogeneous, equivalence are had an effect, similar with the characteristic of natural soils, and spray layer only on surface Near have an effect, not there is the characteristic of natural soils.

Second, fundamental difference in architectural characteristic.

On structure dimension, the modified sandy soil formed after mix, its physical dimension can regulate as required, Paving thickness is changeable, when structural thickness is big, can plant the plant that plant is tall and big, and structural thickness is little Time, the plant that plant is short and small can be planted；And the thickness spraying layer is only formed near surface, its structure chi Very little being difficult to regulates as desired.

In intensity and wear properties, the modified sandy soil formed after mix, formation is plate body, has plate Mechanical characteristic, in the case of the strength of materials is relatively little, still possesses higher bearing capacity, reaches to fix the sand Purpose, and, the cracking of plate body or destruction, do not destroy its effect fixed the sand, play with the intensity of soil layer Principle is consistent with stability；Meanwhile, modified sandy soil viscoelastroplasticity in its thickness range, time the wettest Body, or porous solid time dry, all can either stablize the root system of plant, can adapt to again the growth of root system With development, with soil curing plant and adapt to root system of plant development mechanical characteristic consistent.But, spray shape The skin layer become, has the mechanical characteristic (the biggest with the characteristic difference of plate) of thin film, it is necessary to assure enough Intensity, can be only achieved the purpose fixed the sand, and top layer is once destroyed, and is just difficult to retrain the husky body under top layer, and it is solid Husky effect is just difficult to play；Meanwhile, there is no additional constraint, still between the husky body granule under top layer, surface For naturally husky body, it is impossible to stablize root system of plant, with the characteristic fundamental difference of soil.

On pore characteristic, the even pore distribution of modified sandy soil, there is connection and the opening contacted with the external world Hole, it is possible to the external world, moisture, nutrient and the exchange of air occur, and spray the skin layer of formation, envelope Close husky body (sandy soil) to contact with extraneous.

In water conservation, water storage and evaporation characteristic, first, the water conservation of modified sandy soil, water storage principle are that water is straight Connect to be stored in the liquid with caking property and adhesiveness and (as it was previously stated, liquid removes solid matter be all Water), it is difficult to evaporate and run off, similar with the water conservation of soil, Water storage characteristics, its water conservation, storage capacity Very strong, and this ability can regulate in a bigger scope, it is possible to adapt to various plant Growth, the enforcement in Chongqing shows, the modified sandy soil of the high storage capacity obtained by regulation match ratio, Can rice cultivation flourishing, until gathering in the crops full Oryza glutinosa；Secondly, the evaporation characteristic of modified sandy soil Also similar with soil, after the evaporation of moisture in the grains of sand of surface, internal moisture not directly and extraneous contact, from Top to bottm slow evaporation, keeps a rational evaporation and water storage gradient.But, spray the surface formed thin Layer, the characteristic of its water conservation, water storage and evaporation and modified sandy soil fundamental difference, just spray and to reside in surface thin Water in Ceng, is only capable of penetrating into the scope that below top layer is the least, it is easy to evaporates and is formed and extraneous closing Solid film, now, thin film itself is without storage capacity, and its water storage principle is: utilize in husky body (sandy soil) Free moisture, the complex process evaporate because temperature is uneven in temperature, condense, being hampered, finally make it stop In the region of thin film close beneath, this water storage principle and soil and the water storage principle fundamental difference of modified sandy soil, The moisture stored is few, is only capable of the growth adapting to minority plant.

3rd, the plantation of plant is different with growth characteristics.

First, in the plantation characteristic of seed, implementing contrast and show, for modified sandy soil, seed can be embedded in In modified sandy soil, or being sown in modified sandy soil surface, the germination characteristic according to seed is different, and various seeds are equal Can germinating growth；And for the method for surface sprinkling adhesion layer, after various seeds are buried or are broadcasted sowing, it is necessary to Spray thin layer and adhere to cover layer, but, owing to the moisture below surface coating is few, the seed being partly embedded into Do not germinate or germination is poor；Simultaneously as can close seed after surface coating solidification, (and moisture is Evaporation), the seed broadcasted sowing is after covering thin layer, and same appearance is not germinateed or the situation of germination difference.Therefore, Modified sandy soil has the character of soil, germination preferably.

In the plantation characteristic of plant, implementing contrast and show, modified sandy soil can plant various plant, according to The difference of modified sandy soil thickness, can plant the herbaceous plant that plant is short and small, it is possible to the grass that plantation plant is tall and big This plant, also can plant shrub, and, local thickness and volume at modified sandy soil can stablize plant roots In the case of system, also can plant high megaphanerophyte；But, form thin layer adhesion cover layer at spraying liquid after, Especially the evaporation of the moisture in thin layer cover layer and after forming solid thin-film layer, serike is to destroy thin film Layer is cost, therefore, after spraying thin layer cover layer, suitably plants any plant more hardly；And plant and plant Spray adhesion layer after thing again, be not much real value.

In the growth characteristics of plant, the universal well-grown of plant in modified sandy soil, there is no with general soil Difference, according to the difference of modified sandy soil thickness, modified sandy soil can be with the short and small herbaceous plant of growth plant, also Can the tall and big herbaceous plant of growth plant, also can grow shrub and arbor, but, only spray at thin layer and cover In the case of, the universal growing state of plant is poor, and, the sand below thin layer cover layer, it is difficult to firm Herbaceous plant (such as Semen Maydis etc.) that plant is tall and big and trees.

It should be noted that above example is only in order to illustrate technical scheme and unrestricted, although With reference to preferred embodiment, the present invention is described in detail, it will be understood by those within the art that, Technical scheme can be modified or equivalent, without deviating from technical solution of the present invention Objective and scope, it all should be contained in the middle of scope of the presently claimed invention.

Claims

1. the manufacture method of a modified sandy soil, it is characterised in that: comprise the following steps:

A. take and can be dissolved in the solid organic materials of water and be dissolved in water, formed and there is caking property and adhesion The solution of property, the described solid organic materials that can be dissolved in water includes natural polymer and modified material thereof and synthesis One or both and above mixture in polymer substance；

After the described solution with caking property and adhesiveness and sandy soil mix can adhesion sandy soil granule, formation Modified sandy soil is pellet pores structure；Moisture in the described solution with caking property and adhesiveness can be with molten Liquid sticks between sandy soil granule；After moisture evaporation in the described solution with caking property and adhesiveness, its In the solid organic materials that can be dissolved in water can bond sandy soil granule and meet after water and can again be dissolved in the water And formed and there is caking property and the solution of adhesiveness and adhesion sandy soil granule；Described have caking property and adhesiveness After water evaporation in solution, the weight ratio being dissolved between the solid organic materials of water and modified sandy soil therein For 1:30-8000.

2. the manufacture method of a modified sandy soil, it is characterised in that: comprise the following steps:

A. take sandy soil, water and the solid organic materials of water can be dissolved in, the described solid organic materials that can be dissolved in water Including one or both in natural polymer and modified material and synthetic high polymer matter thereof and above mixing Thing；

The described solid organic materials that can be dissolved in water is dissolved in the water and is formed and have the molten of caking property and adhesiveness Liquid adhesion sandy soil granule, the modified sandy soil of formation is pellet pores structure；Described have caking property and adhesion Moisture in the solution of property can stick between sandy soil granule with solution；Described have caking property and adhesiveness Solution in moisture evaporation after, the solid organic materials that water can be dissolved in therein can bond sandy soil granule and Meet and can again be dissolved in the water after water and be formed and there is the solution of caking property and adhesiveness and adhesion sandy soil Grain；After the described water evaporation having in caking property and adhesiveness solution, the solid-state that can be dissolved in water therein is organic Weight ratio between material and modified sandy soil is 1:30-8000.

The manufacture method of modified sandy soil the most according to claim 1 and 2, it is characterised in that: modified husky After there is between the sandy soil granule of soil the water evaporation in caking property and adhesiveness solution, solids mass-energy therein Sandy soil granule is bonded together.

The manufacture method of modified sandy soil the most according to claim 1 and 2, it is characterised in that: modified husky Between the sandy soil granule of soil, there is interconnected pore and dead-end pore.

The manufacture method of modified sandy soil the most according to claim 1 and 2, it is characterised in that: step a In, it is also added with being scattered in the natural polymer in described solution and modified material thereof and synthetic high polymer One or both and above mixture in matter.

The manufacture method of modified sandy soil the most according to claim 1 and 2, it is characterised in that: step b In, it is also added with organic polymer auxiliary agent, little molecule auxiliary agent, surfactant, inorganic active powder or powder One or both in material, inorganic inactive powder or powder material, solid substance and pH value Auto-regulator And above mixture；Described solid substance is rigidity or flexible fiber, fabric, rattan, film tape or sheet.

The manufacture method of modified sandy soil the most according to claim 1 and 2, it is characterised in that: described energy The solid organic materials being dissolved in water is polyvinyl alcohol, polyethylene glycol oxide, Polyethylene Glycol, sodium polyacrylate, carboxylic One or both and above mixing in sodium carboxymethylcellulose pyce, hydroxypropyl methyl cellulose and cellulose ether or Copolymer.