CN1252216C - Improving agent for desert soil and method for controlling desert - Google Patents
Improving agent for desert soil and method for controlling desert Download PDFInfo
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- CN1252216C CN1252216C CN 03109815 CN03109815A CN1252216C CN 1252216 C CN1252216 C CN 1252216C CN 03109815 CN03109815 CN 03109815 CN 03109815 A CN03109815 A CN 03109815A CN 1252216 C CN1252216 C CN 1252216C
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Abstract
The present invention relates to an improving agent for desert soil, which comprises 60 to 100 parts by weight of clay, 0.5 to 4 parts by weight of turf and 8 to 30 parts by weight of mineralized organic carbon. The present invention also relates to an application and a method of the improving agent for improving desert soil.
Description
Invention field
The present invention relates to a kind of desert soil transforms agent and utilizes this desert soil to transform the method that the desert is administered in agent.
Background technology
To the end of the year 1999, national Desertification area has expanded to 174.3 ten thousand square kilometres, amounts to 2,600,000,000 mu, accounts for 18.2% of area, but also is constantly accelerating expansion.The seventies in 20th century, 1560 square kilometres of the annual expansions of national Desertification area, the eighties, annual expansion was 2460 square kilometres, the end of the nineties, 3436 square kilometres of annual expansions.Therefore it is extremely urgent to administer the desert.
The traditional method of administering the desert has that kind of a grass is planted trees, arid is watered etc.The grass tree planting is grown slowly and surviving rate is low but plant, and regulation effect is poor, can not obtain economic benefit for a long time.Arid is watered and can be caused soil physics clay, soil nutrient material and soil fertility to run off, depression, river valley and plains region arid the irrigation problem little because Horizon, soil erosion is little, but the soil soil erosion can be caused in the highlands.Therefore other thinks that as the hydro science man major cause of Desertification is a lack of water, and arid proposes the water saving irrigation of suiting measures to local conditions, and the water-saving technology system has: (1) irrigates the optimal allocation of water resources water saving; (2) water-saving irrigation project technology; (3) agronomy and biological irrigation technique; (4) water saving irrigation administrative skill; (5) soil water-retaining agent, water-repellent agent product increase soil water regain etc. are administered the technical measures of Desertification.The pedologist thinks that the major cause of Desertification is: because soil fertility descends, lack the soil nutrient material, therefore, the fertilizer product of specializing in the compensation soil nutrients such as soil fertilizer synergist, nutrition agent of exploitation a multitude of names recovers the technical measures of soil fertility improvement Desertification.Botanist and biologist think that the major cause of Desertification is: because vegetation kind drought-resistant ability is not strong, and can not normal growth or withered under the abominable Desertification physical environment, therefore, specializing in cultivation can come restore vegetation in the drought resisting vegetation strain of Desertification ground normal growth, administers Desertification.Ecologist and engineering scientist think that the major cause of Desertification is: because human unscientific activity in production destroys the natural productiveness of soil, therefore, clear-cut employing people's resettlement there, conceding the land to forestry, also careless next, method of natural restore vegetation and improvement Desertification or the like.
Though above-mentioned these are administered the method for Desertification, China is administered Desertification played great function, so far, still do not solve the basic problem of 3436 square kilometres of the annual expansions of China's Desertification area.
Summary of the invention
Invention is through investigating discovery, and ground, desert does not have water and lack of water not as people's traditional understanding and said.Find when the contriver investigates in hair Wu Su desert in the high wandering dune of 20-30m, dig 30cm and show native sand bed and just can see moistening sandy soil.We research and analyse mao ground, Wu Su desert is enough to supply effectively vegetation growth at the moisture of such humid soil moisture, though this is because sandy soil water content few (field capacity), but the wilting coefficient of vegetation is also very low general in about 1% of weight water content, therefore, the relative moisture that is used effectively of vegetation is very high.During as water content 14-16% in clay, vegetation can not survive, and have only water content in the rough sand soil more than 2%, soil moisture satisfies the water supply capacity to vegetation fully, and vegetation normal growth, " effectively water " property natural law of soil moisture that Here it is is decided the validity of moisture movement speed and moisture by soil inner material structure.
The contriver finds unfortunately that in the investigation on ground, hair Wu Su desert water, sandy soil, organic matter are arranged, and natural climate is not special yet, but vegetation is difficult to growth and forms.The contriver takes a sample to research and has analyzed the black plain Desertification local product matter structure of hair, and desert soil is compared with northeast black earth, southern laterite and coastal loess, has basic difference to be in the desert soil, does not have or seldom contain the soil clay particle soil that constitutes soil fertility.Clay is defined as particle diameter less than 0.08mm (using standard in the production), and especially less than 0.01mm (using standard on the soil science), more specifically less than the particle (using standard in the scientific research) of 0.002mm, in the present invention, above-mentioned three kinds of scopes all are suitable for.This clay content is relevant with the crack phenomenon that underground water moves upward, and can improve water retention in soil.We sift out the plain Desertification soil of hair crow with the copper wire sieve of 0.08mm (general 160-220 order), in the mobile sand of 100g, only filter out the clay soil of 4.9g, in the kind ground of 100g sand, only filter out the clay soil of 12.4g.But the black earth in northeast, southern laterite, coastal loess clay content are all more than 30%, and the clay soil content of northeast black earth in the 30cm topsoil all surpasses more than 80%.
The desert ground surface soil, though water content is few, field capacity is also few, but the wilting coefficient of vegetation is also very low, it is very abundant that this explanation provides effective water content of vegetation, the vegetation wilting coefficient of desert soil also has only about 1%, so sandy soil water content 2% above vegetation fully can normal growth.
The one of the main reasons that ground, desert vegetation can not grow is that water flow or mobile variation are too fast, the capillary root that the root system of vegetation can not be grown and be absorbed water and absorb nutritive substance.The contriver is with only containing in the desert soil of clay 12%, and different ratios ground increases the prescription desert soil improvement experiment of clay, and in desert soil, every increase clay content is reducing the mobile pace of change of desert soil moisture inversely proportionally; Increasing soil water content (referring to increase field capacity) in direct ratioly.The improvement black plain desert soil physicals of hair is indoor scientific experiment result prove, in desert soil, along with the increase of soil clay particle content, reduce vegetation root system inversely proportionally and do not have sturdy smooth of the capillary root, and increase suction in direct ratioly, absorb the capillary root of nutritive substance function.
In the desert was investigated, the contriver found that simultaneously the bottom land of Desertification also has the small lake of many ponding, though the ponding in the lake does not flow, the animal manure organism that nitrogen content is abundant in the moistening depression is also more, and still vegetation can not grow rankly.The contriver is through studies confirm that, water is arranged and have under the condition of organic substance on ground, desert, vegetation is damaged, cause death, and principal element that can not normal growth is in the bottom land of Desertification, and because of carbon in soil, nitrogen serious disproportion, microorganism can not survive, can't decompose high nitrogenous nutritive substance effectively, and be easy to produce toxic gas hydrogen sulfide.
Because the vegetation wilting coefficient of Desertification soil is 1%, containing soil moisture in layer vegetation more than 2% be in the Desertification soil layer fully can normal growth.Find in the investigation, in the following sand bed of 30cm water content more than 2% moistening sandy soil more.The withered true cause of wandering dune ground vegetation is the arid and the high temperature of Desertification surface soil layer.
Investigate withered process and the diverse objective spontaneous phenomenon of the withered process of needle pine tree class vegetation of finding the broad-leaved willow.The broad-leaved willow is that the spray tender leaf from treetop begins withered from top to down; Needle pine tree class vegetation is that veteran branch, the Lao Ye from the bottom begins withered from the bottom up; The general neither big nor small willow class vegetation with luxuriant foliage of leaf be the blade on the branch loose star, at random turn to be yellow withered, people are difficult to be observed at leisure, one by one these vegetation of the withered all processes that falls down of blade every days all little by little withered spontaneous phenomenon days of atmospheric drought withered more serious, the serious more generation of the desert area that the Desertification degree is serious.Therefore, vegetation withered with atmosphere in the gaseous state water content extremely lack relevant.The atmospheric moisture of vegetation normal growth is generally at 70-80%, and is if relative humidity of atomsphere is lower than 50%, withered and daily mean temperature is higher than that the above vegetation of 30C must be subjected to the harm of atmospheric drought damage caused by a drought.Soil moisture is many again, and the trees of planting by the river are also unbalance because of water regain and the rising fluid loss of vegetation, occur withered.This phenomenon is different with the soil drought damage caused by a drought, is defined as atmospheric drought damage caused by a drought and vegetation physiological drought damage caused by a drought.
The contriver reaches a conclusion, and desert vegetation can not be grown or withered basic reason one is to lack the content of the soil clay particle that forms soil fertility and the serious imbalance of carbon, nitrogen ratio in soil at all in the Desertification soil; The 2nd, though there are groundwater resource in the desert, but in the Desertification soil of ruined soil material structure, be difficult to produce the normal water componental movement regularity of distribution of soil crack phenomenon, can not form the soil reservoir system of sustainable supply vegetation moisture, moisture in soil inside moves too fast, vegetation root system can't grow suction, inhale the capillary root of nutritive substance; The 3rd, the atmospheric drought damage caused by a drought is to cause slow and withered basic reason of vegetation growth and important factor.
The contriver tests the mobile sand of hair crow element, kind ground sand and black earth quality composition and the structure of matter.With the sieve of diameter 0.08mm, sieving separating experiment, and measure ground, hair Wu Su desert and move sand, plant that the husky material with Helen's black earth soil in ground is formed and its character that is shown etc., experimental result such as table 1.
Table 1
| Experiment is handled | Clay contains rate (%) | Dry ground unit weight (g/cm 3) | Wet soil unit weight (g/cm 3) | Dry ground porosity (%) | Wet soil porosity (%) | Organic matter contains rate (%) |
| A moves sand | 4.9 | 1.58 | 1.94 | 41.82 | Below 30 | 0.18 |
| B kind ground is husky | 12.4 | 1.49 | 1.84 | 44.79 | Below 35 | 0.96 |
| CK black earth | 78.5 | 1.106 | 1.48 | 57.4.8 | 45.11 | 7.6 |
The result shows that the soil of the black plain Desertification of hair compares with northeast black earth, no matter plants that ground is husky still to move the husky basic substance that has not nearly all had soil fertility.The soil clay particle substances content lacks 6-16 respectively doubly than northeast black earth, and organic content is lacked 9.8-29 respectively doubly.Unit weight difference dried, wet soil is also very big.Experimental studies have found that the desert soil moisture content for a long time, porosity sharply descends.
Also carry out the control experiment of mobile sand, kind ground sand and black earth soil water movement rule, the results are shown in Table 2.
Table 2
| Experiment is handled | Maximum sticking amount (%) | Clay contains rate (%) | Sticking speed 3cm/ branch | Effective water ratio (%) | Wilting coefficient (%) | Upward movement speed multiple |
| A moves sand | 21.7 | 4.9 | 1.5 | 1.5-4 | 1.5 | 25.73 |
| B kind ground is husky | 24.13 | 12.4 | 2.6 | 3.5-12 | 3.5 | 14.86 |
| CK black earth | 48.96 | 78.5 | 38.6 | 14-26 | 14 | 0 |
Experimental result show the maximum sticking amount of Desertification soil moisture far fewer than contrast black earth less than half, but soil available water divides the wilting coefficient of content and vegetation to compare with northeast black earth, again doubly less than the 2-6 of northeast black earth.The basic theoretical knowledge of these plant physiology combines with the objective natural practical situation in ground, desert and unifies to research and analyse, as long as soil moisture content surpasses more than 2%, just can satisfy the function of vegetation normal supply moisture in Desertification soil.
Analyze in the black plain desert soil moisture movement rule of hair at experimental study, find that the content and the soil water movement speed of soil clay particle soil has close dependency in the soil texture.Referring to table 2, in Desertification soil, become multiple to reduce soil clay particle soil content, inversely proportional quickening soil internal moisture movement velocity.Repeatedly do repeatedly in the experiment of Desertification soil and the black earth soil moisture upward movement distribution and the dehydration rule of evapotranspiring, the research observation test finds that soil moisture is sticking upward movement constantly, reaches maximum sticking amount.Then, diurnal temperature is stabilized in 15-20 ℃, in indoor calm, the laboratory of not having other natural environment influence of average relative humidity 37.8%, and the observational study experiment of the dehydration process that evapotranspires.In the dehydration process that evapotranspires, at first soil moisture is that the upward movement distribution or accumulation is at topsoil, the crack phenomenon that Here it is is found, soil crack phenomenon is when soil moisture field capacity (soil moisture undersaturated condition) is following, and also continuous upward movement distribution or accumulation is in the characteristics of motion of top topsoil.
Soil fertility is the scientific concept of the expression soil material natural production amount character that shows by the soil material The Nomenclature Composition and Structure of Complexes.Soil clay particle content can regulate soil material moisture content, upward movement of water speed, supply with the moisture function of vegetation; The content of soil clay particle material not only can determine content inorganic in the soil, organic nutrient substance, but also the supply capacity of decision soil nutrient material; The soil clay particle substances content influences physico-chemical property, water, gas, the thermal distortion law of soil material structure utterly; Soil clay particle content can change microflora and the ecological environment of soil in soil; The maximum contribution of soil clay particle substances content is in soil, can produce the soil crack phenomenon that the vegetation ability is supplied with in the upward movement constantly of soil moisture and nutritive substance.
Therefore think, only contain the soil clay particle material of some amount, and the good soil of Soil structure, just can have higher soil fertility and productivity, just can help the vegetation that grows.The soil of type whatsoever has only the highest soil of increment of vegetation, and the fertility of soil is the highest.The soil fertility soil with high is inorganic, the organic nutrient substance of soil that soil itself can accumulate throughput fully again, and this throughput again of soil itself is called the ability of the Sustainable Development and Utilization of soil usually.Ground, desert carbon-nitrogen ratio imbalance also need solve in addition.
Based on above understanding, the present invention proposes a kind of desert soil and transform agent, this transformation agent purpose is to increase clay, and the carbon nitrogen of suitable proportion is provided, and comprising:
60-100 weight part clay soil
0.5-4 the weight part peat composed of rotten mosses
8-30 weight part mineralising organic carbon
Desert soil of the present invention is transformed agent and is preferably included:
70-90 weight part clay soil
1.5-3 the weight part peat composed of rotten mosses
12-20 weight part mineralising organic carbon
Desert soil of the present invention is transformed agent and is preferably included:
75-85 weight part clay soil
2-2.5 the weight part peat composed of rotten mosses
15-20 weight part mineralising organic carbon
Wherein clay soil can be selected from the high clay of local clay content, through air-dry, pulverize, separate and obtain particle diameter＜0.08mm, especially＜particle of 0.01mm; Also can be that the husky screening of weathering of local the easiest pulverizing separates or pulverizes sieving separating such as (for example by general milling machine) and becomes particle diameter＜0.08mm, especially＜particle of 0.01mm; The cigarette ash (as flyash) of perhaps industrial refuse dust, burning coal etc. does not contain the particle of the particle diameter＜0.08mm of soil toxicity material, and they all can be used to make the starting material clay that desert soil is transformed agent.Also can use their mixture.
The peat composed of rotten mosses is the naturally occurring material that mainly contains nitrogen in the stratum.The part of the peat composed of rotten mosses (for example 10-90% of peat composed of rotten mosses consumption) can be used organonitrogen (for example comminuted plants stalk, fertilizer etc.) or inorganic nitrogen (for example nitrogenous fertilizer such as urea, ammonium chloride etc.) replace, its consumption makes the nitrogen element total amount and the carbon element content of mineralising organic carbon compare usually at 0.5-2: 8-15, and in preferred about 1: 10 scope.They are crushed to about 0.5-5mm usually, especially the particle diameter 7 of 1-3mm.
The mineralising organic carbon is a coal, and especially the low coal of toxic substance content is used to provide organic carbon.They are ground into particle diameter＜0.08mm usually, especially＜0.01mm, and more specifically＜particle of 0.002mm uses.
The method for preparing transformation agent of the present invention comprises above-mentioned three kinds of materials are mixed in proportion and gets final product.
Transformation agent of the present invention in addition can be chosen wantonly and contain any fertilizer of an amount of potash fertilizer and/or phosphate fertilizer and/or other and/or biological bacteria.
During use, can be with the sandy soil at transformation agent of the present invention and scene, desert according to 20-45: 80-55, preferably about 32-40: 60-70, more preferably from about 36: 64 weight ratio mixes and gets final product, and obtains the desert soil that desert soil is transformed the agent improvement.
Another object of the present invention provides the purposes of described transformation agent in administering the desert.
The invention provides a kind of method of desert in addition; (for example 40-60cm is dark to comprise artificial or mechanical excavation kind of a tree well; the 50-200cm diameter); put into sapling then; bury the sand (for example 15-30cm is dark) that dug out originally earlier; water in right amount (to reach or to be standard near field capacity; the 10-30% of general sandy soil weight; preferred about 20% moisture gets final product); compacting, it is dark that the desert soil that improve with desert soil transformation agent on its top buries 15-25cm again, and preferably about 20cm is dark; water in right amount (as more than; to reach or be standard near field capacity) compacting, its top 5-15cm, preferred 8-12cm; more preferably from about the sandy soil that dug out originally of 10cm cover, and protect transformed Desertification soil.In the end above the sandy soil of Fu Gaiing, do not rewater, in order to avoid wash away loss.According to such program kind tree desertization ground, once plant tree and grow into forest, guarantee surviving rate.This is because the Desertification soil of transforming, first-selection can be recovered the natural law of the upward movement of water of soil crack phenomenon, desert soil underground moisture and moisture all around all constantly accumulate in desert soil and transform in the soil layer that agent improved, because we are placed on conditioned soil in the maximum soil layer of sapling root growth, these kinds trees and the renovation technique of administering desert soil all strictly under natural science applied theoretical direction, carry out according to the natural law.Transform the desert soil that agent improved with desert soil, the topsoil of landfill sapling root growth, have only vegetation root system growth place Soil structure good, the fertility height, soil moisture could be assembled in vegetation root system growth place, once plant tree, the kind grass once waters and also can lean on soil moisture constantly to accumulate in the top topsoil with the crack phenomenon upward movement, and needed moisture of vegetation growth and nutritive substance are provided.
Specific embodiment
Further specify the present invention by the following examples, it should be understood that these embodiment only are used for explanation, do not limit the scope of the invention.
Embodiment 1
Desert weathering sand is ground into clay soil below the particle diameter 0.01mm, the peat composed of rotten mosses is crushed to the 1-3mm fragment and mineralising organic carbon (coal) is crushed to the following particle diameter of 0.08mm.The 83 weight part clays soil that will obtain so again mixes with 2.3 weight part peat composed of rotten mosses powder and 17 weight part coal dusts, obtains to transform agent.Transform agent and the mixed of desert sandy soil according to 36: 64, the desert soil that acquisition improved.
Embodiment 2
Desert weathering sand is ground into clay soil below the particle diameter 0.008mm, the peat composed of rotten mosses is crushed to the 1-3mm fragment and mineralising organic carbon (coal) is crushed to the following particle diameter of 0.05mm.The 70 weight part clays soil that will obtain so again mixes with 3 weight part peat composed of rotten mosses powder and 18 weight part coal dusts, obtains to transform agent.Transform agent and the mixed of desert sandy soil according to 30: 70, the desert soil that acquisition improved.
Embodiment 3
Desert weathering sand is ground into clay soil below the particle diameter 0.05mm, the peat composed of rotten mosses is ground into the fragment of 1-3mm and mineralising organic carbon (coal) is crushed to the following particle diameter of 0.05mm.The 90 weight part clays soil that will obtain so again mixes with 2 weight part peat composed of rotten mosses powder and 14 weight part coal dusts, obtains to transform agent.Transform agent and the mixed of desert sandy soil according to 40: 60, the desert soil that acquisition improved.
Embodiment 4
Get the clay screening, obtain the following clay soil of particle diameter 0.08mm, the peat composed of rotten mosses is ground into the 1-3mm fragment and mineralising organic carbon (coal) is crushed to the following particle diameter of 0.05mm.The 90 weight part clays soil that will obtain so again mixes with 2 weight part peat composed of rotten mosses powder and 14 weight part coal dusts, obtains to transform agent.Transform agent and the mixed of desert sandy soil according to 36: 64, the desert soil that acquisition improved.
Embodiment 5
Get flyash screening, obtain the following clay soil of particle diameter 0.002mm, the peat composed of rotten mosses is ground into the fragment of 1-3mm and low sulphur coal is crushed to particle diameter below the 0.05mm.The 75 weight part clay soil that will obtain so again, 1.5 weight part peat composed of rotten mosses powder, 14 weight part coal dusts mix with 1 weight part ammonium chloride, obtain to transform agent.Transform agent and the mixed of desert sandy soil according to 36: 64, the desert soil that acquisition improved.
Embodiment 6
Desert weathering sand is ground into clay soil below the particle diameter 0.05mm, the peat composed of rotten mosses is ground into the fragment of 1-3mm and low sulphur coal is crushed to particle diameter below the 0.05mm.The 75 weight part clay soil that will obtain so again, 1.1 weight part peat composed of rotten mosses powder, 14 weight part coal dusts mix with 1 weight part urea, obtain to transform agent.Transform agent and the mixed of desert sandy soil according to 36: 64, the desert soil that acquisition improved.
Embodiment 7
Desert weathering sand is ground into clay soil below the particle diameter 0.05mm, the peat composed of rotten mosses is ground into the fragment of 1-3mm and low sulphur coal is crushed to particle diameter below the 0.05mm.The 75 weight part clay soil that will obtain so again, 1.1 weight part peat composed of rotten mosses powder, 14 weight part coal dusts are pulverized particle with 3 weight part maize straws and are mixed, and obtain to transform agent.Transform agent and the mixed of desert sandy soil according to 36: 64, the desert soil that acquisition improved.
Desert soil is transformed agent conditioned soil physics and chemistry function contrast experiment
With internal diameter 0.08mm dusting cover, sift out and separate the soil clay particle material, mixes with the peat composed of rotten mosses and coal dust again, again with the desert in sandy soil be mixed and made into conditioned soil, with move husky, plant that ground is husky, CK black earth carries out the soil water movement rule and tests.
Table 3 soil clay particle content is to the influence experiment of soil water movement rule
| Experiment is handled | Move husky | It is husky to plant ground | CK black earth | A improves the soil | B improves the soil | C improves the soil |
| Clay rate % | 4.9 | 12.4 | 78.5 | 50 | 30 | 20 |
| Sticking rate % | 20.1 | 23.9 | 46.1 | 27.6 | 25 | 20.6 |
| Sticking speed | 1 minute/3cm | 3 minutes/3cm | 38 minutes/3cm | 12 minutes/3cm | 6 minutes/3cm | 4 minutes/3cm |
Above result shows, the increase of clay content in the soil, and the maximum sticking amount of soil moisture also increases, and soil internal moisture movement velocity significantly slows down.
The experiment of soil internal moisture distribution of movement rule when desert soil is transformed agent conditioned soil moisture evaporation
With 3cm height, 70 milliliters of standard soil water experiment aluminium boxes, the bear suction, then, various prescription transformation soil are filled the aluminium box, and first-selected suction reaches maximum sticking amount, allow its spontaneous evaporation dehydration again, and every day evaporation water loss law, observation, record, statistical round the clock, when the soil moisture field capacity is following, in soil internal moisture upward movement dehydration whole process, the regularity of levels soil movement changes in distribution.
The internal moisture upward movement regularity of distribution experimental result during dehydration of table 4 soil water evaporation
| Experiment is handled | Move husky | It is husky to plant ground | CK black earth | A improves the soil | B improves the soil | C improves the soil |
| Clay rate % | 4.9 | 12.4 | 78.5 | 50 | 30 | 20 |
| On the water ratio | 8.14 | 13.97 | 42.57 | 23.5 | 19.1 | 15.3 |
| Under the water ratio | 9.67 | 13.97 | 40.88 | 20.3 | 16.5 | 14.6 |
Experimental results show that, soil moisture is in evaporation water loss, the inner lower floor of soil moisture constantly by nature crack phenomenon upward movement distribution or accumulation in subaerial topsoil, then, evaporation water loss on the fluid surface layer in subaerial soil topsoil slit and interfacial layer.Therefore, in the process of the whole evaporation water losses of soil moisture, the water content of upper layer upper soil horizon is all the time more than the upward movement regularity of distribution of the water content of bottom soil layer (referring to the soil layer top and the bottom here and be the soil water movement system of distribution in the 1 meter pedosphere that influences vegetation growth).
Above-mentioned a series of scientific experiment, fully prove, soil moisture is in the process of the following evaporation water loss of field capacity, what of soil clay particle content, decision soil moisture is in the accumulative of topsoil conveying constantly crack phenomenon efficient, and in soil clay content few more on the topsoil of soil the speed of evaporation water loss fast more, show as if can not be in topsoil the anti-regularity of moisture build op.The present invention is by an amount of soil clay particle content that increases or compensate destruction or run off, the soil material structure of desertization, improve the desert soil fertility, the UIT that the science of recovering the desert soil natural productiveness is administered the Desertification root learn a skill measure and scientific and technological route, the desert soil of the present invention's development is transformed agent, can administer the soil fertility problem of Desertification essence fully according to the scientific and technological route of being formulated.
Claims (11)
1, a kind of desert soil is transformed agent, and this transformation agent comprises:
60-100 weight part clay soil
0.5-4 the weight part peat composed of rotten mosses
8-30 weight part coal.
2, transform agent according to the desert soil of claim 1, it is characterized in that the weight part of each raw material is:
75-85 weight part clay soil
2-2.5 the weight part peat composed of rotten mosses
15-20 weight part coal.
3, transform agent according to the desert soil of claim 1, it is characterized in that wherein the part of the peat composed of rotten mosses replaces with organonitrogen or inorganic nitrogen, its consumption makes that the weight ratio of carbon element content of nitrogen element total amount and coal is 0.5-2: 8-15.
4, transform agent according to the desert soil of claim 2, the weight ratio that it is characterized in that the carbon element content of nitrogen element total amount and coal is 1: 10.
5, transform agent according to the desert soil of claim 1, it is characterized in that wherein clay soil is selected from following arbitrary material or their mixture: the clay that clay content is high, through air-dry, pulverize, separate and obtain the particle of particle diameter＜0.08mm; The husky screening of the weathering of easy pulverizing separates or pulverizes the particle that is separated into particle diameter＜0.08mm; The particle of the particle diameter＜0.08mm that does not contain the soil toxicity material in the cigarette ash of industrial refuse dust and/or burning coal.
6, transform agent according to the desert soil of claim 1, it is characterized in that described coal is the low coal of toxic substance content.
7, transform agent according to the desert soil of claim 1, it is characterized in that containing any organic or inorganic fertilizer.
8, transform agent according to the desert soil of claim 7, it is characterized in that described organic or inorganic fertilizer is potash fertilizer and/or phosphate fertilizer and/or biological bacteria.
9, the desert soil of preparation claim 1 is transformed the method for agent, comprises the peat composed of rotten mosses is crushed to 0.5-5mm, and it is below the 0.08mm that coal is ground into particle diameter, and the clay of the former two and particle diameter＜0.08mm mixes and gets final product then.
10, any one desert soil of claim 1～8 is transformed the application of agent in the improvement desert soil, comprises each the transformation agent and the sandy soil in desert among the claim 1-8 are mixed according to the weight ratio of 20-45: 80-55.
11, any one desert soil is transformed the purposes of agent in administering the desert among the claim 1-8.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| MX2008009106A (en) * | 2006-01-13 | 2008-10-20 | Desert Control Inst Inc | Inorganic, static electric binder composition, use thereof and method for the preparation of said binder composition. |
| CN102491832B (en) * | 2011-11-22 | 2014-02-12 | 乌兰 | Vegetation nutrient soil and method for recovering vegetation on desertified land |
| CN103798099A (en) * | 2012-11-14 | 2014-05-21 | 廖树汉 | Application of plastic-glass cloths to recovering underground water vapor for tree usage to change deserts into oases |
| CN104193537B (en) * | 2014-09-23 | 2016-07-13 | 中国科学院兰州化学物理研究所 | A kind of composite with water conservation function of fertilizer retention |
| CN105409523B (en) * | 2015-11-26 | 2018-06-12 | 华中科技大学 | A kind of desert soil method |
| CN110404508A (en) * | 2019-08-06 | 2019-11-05 | 中南大学 | A kind of soil and preparation method thereof for the airborne particulates that adsorb and degrade |
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