CN102535383A - Saline-alkali land treatment method - Google Patents
Saline-alkali land treatment method Download PDFInfo
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- CN102535383A CN102535383A CN2012100173285A CN201210017328A CN102535383A CN 102535383 A CN102535383 A CN 102535383A CN 2012100173285 A CN2012100173285 A CN 2012100173285A CN 201210017328 A CN201210017328 A CN 201210017328A CN 102535383 A CN102535383 A CN 102535383A
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Abstract
The invention discloses a saline-alkali land treatment method comprising the steps of surveying saline-alkali land and a ground water zone under the surface of the saline-alkali land and building a water pumping device, a perched river and a reservoir, wherein the bottom of the perched river is higher than the lowest part of the surface of the saline-alkali land; the water pumping device is used for pumping the ground water in the ground water zone into the perched river or the reservoir; and the height difference between the ground water level of the ground water zone and the lowest part of the surface of the saline-alkali land is a number value that is not likely to cause a capillary force. The water pumping device is used for pumping the ground water in the ground water zone and discharging the ground water into the perched river or the reservoir, so as to ensure that the height difference between the ground water level of the ground water zone and the lowest part of the surface of the saline-alkali land is the number value that is not likely to cause the capillary force; and meanwhile, the ground water flows into the reservoir in virtue of the osmosis of soil to permanently keep the height difference between the peripheral ground water level and the surface of saline-alkali land, so as to improve the earthiness of the saline-alkali land.
Description
Technical field
The present invention relates to a kind of reclamation new technology, especially relate to a kind of improvement method of salt-soda soil.
Background technology
9.54 hundred million hectares of salt-soda soil areas are arranged in the world, China by 9913.3 ten thousand hectares of salt-soda soil areas, wherein the part salt-soda soil belongs to the farming field, these fields all be basically in, low-yield land, this has directly influenced human grain security.In can working the fields, the salt-soda soil that not even a blade of grass grows is often arranged, up to ten thousand square metres big (general physical features is hollow); Little several square metres; Very poor because of the salt-soda soil water permeability, when broad irrigation, excess surface water is mostly along getting well underground oozing on every side; The saline and alkaline drip washing in salt-soda soil is very little, and new saline and alkalinely bring with water arranged again.Take incessantly seedling because of the salt-soda soil, ground is exposed, and native face evaporation is very big, and the bottom, ground is saline and alkaline constantly to rise to face of land accumulation with capillary, and the area in salt-soda soil is enlarged gradually.
For a long time, the university of lot of domestic and foreign, institutes, enterprise and individual etc. to a certain extent, have created some methods preferably doing a lot of work aspect the improvement salt-soda soil, have also administered a considerable amount of salinization of soil arable land and desertification soil.Its method roughly can reduce following several kinds: hydraulic engineering method, agricultural tillage method, biological plant method, biological micro-organism method and chemical method.Below all playing comparatively positive effect in varying degrees, but also having some deficiency, the improvement method that has is single, is not the comprehensive regulation, only lays particular emphasis on Improvement type and administers, and improvement speed is slow excessively; The weak point of holding time that has is prone to bounce-back; It is few that raw material resources are used in the improvement that has, and collects and utilize difficulty; The improvement manpower and materials that have consume excessive, and expense is higher; Be prone to produce other harmful effects such as geology, water quality, environmental ecology after the improvement that has.
The saline and alkaline aqueous water that is dissolved in, aqueous water ceaselessly flow, and be saline and alkaline also ceaselessly mobile with flowing of water.But the metamorphosis of water can be blocked saline and alkaline operation, become vaporous water (evaporation) like aqueous water after, stayed on the evaporating surface saline and alkaline, concerning the evaporation of native face, saline and alkaline having stayed on the native face.Vaporous water (moisture in atmosphere and the soil) liquefy water, it is saline and alkaline to dissolve part again.Aqueous water becomes solid water has two kinds of situation, and it is slower to lower the temperature, and can get rid of saline and alkaline; Cooling is very fast, saline and alkaline staying in the ice.Some ion is very active, and very fast with the water motion, some ion combines with soil colloid, is difficult to flow.
The technician finds; The salt-soda soil all is in low lying areas, causes salt-soda soil former because groundwater table is when being not more than 0.3m with soil surface distance, underground water through capillary force when native face evaporates; Saline and alkaline evaporation with moisture is trapped in the face of land, soil, thereby forms large stretch of salt-soda soil.And, cause and increase the weight of to close on the salinization of soil in meadow and farmland through water erosion and eolian erosion.With can be with the saline and alkaline row in the good ground, the upper reaches useless downstream ground (like the desert) of the method for the traditional row's of digging alkali ditch.But to there not being the place of row's alkali condition, can only be with the saline and alkaline soil lower floor that is pressed in, countermeasure is to strengthen water percolating capacity and reduce native face evaporation.
Simultaneously, the technician finds the investigation of region, tool salt-soda soil, owing to the suction-operated that exists slit and soil to water between soil, every extraction 1m--
3Underground water, can guarantee at 100m
2Groundwater table decreasing 0.3m under the face of land, soil; And the big multiple domain wind energy resources in ground, salt-soda soil is abundant, utilizes wind-force groundwater abstraction resultant effect remarkable.
Summary of the invention
The defective that The present invention be directed to the existence of above-mentioned background technology provides a kind of improvement method of the salt-soda soil of reducing pollution, raising transformation efficient and reducing cost.
For realizing above-mentioned purpose; The invention discloses a kind of improvement method of salt-soda soil; It comprises the water table under the prospecting salt-soda soil and the face of land, salt-soda soil, builds picotan, hanging river and reservoir, and said a copious, rapid flow of words river bed is higher than the face of land, said salt-soda soil lowest part; Said picotan extracts the underground water of said water table and sends in said hanging river or the reservoir, and the groundwater table of said water table and the face of land, said salt-soda soil lowest part drop are for being difficult for producing the numerical value of capillary force effect.
Further, said number range is greater than 0.3m.
Further, said picotan is wind-driven water pump, diesel powered water elevator or electric power water elevator.
Further, the construction of said reservoir adopts extraction ground bed mud sand to cause the mode that the ground caved in and form.
Further, the said reservoir savings water water surface is lower than the groundwater table with said water table.
In sum; The present invention extracts the underground water of said water table through utilizing picotan; And underground water entered in hanging river and the reservoir, guaranteeing groundwater table and the face of land, salt-soda soil lowest part drop for being difficult for producing the numerical value of capillary force effect, while underground water flows in the said reservoir through the osmosis of soil; Keep peripheral groundwater table and the face of land, salt-soda soil drop enduringly, and then transformation salinity ground soil property.
Description of drawings
Fig. 1 is a structural representation of the present invention.
The specific embodiment
For further understanding characteristic of the present invention, technological means and the specific purposes that reached, function, the present invention is described in further detail below in conjunction with the accompanying drawing and the specific embodiment.
As shown in Figure 1, the concrete mode of the present invention adopts following technical scheme: prospecting salt-soda soil 1, grasp the water table 2 under salt-soda soil 1 soil structure, permeability and 1 face of land, salt-soda soil; Build picotan 3; Said picotan 3 is a wind-driven water pump; Also can select diesel powered water elevator or electric power water elevator as required; In order to extract the underground water of said water table 2, be the difficult numerical value that produces the capillary force effect with groundwater table and salt-soda soil 1 face of land lowest part drop that guarantees water table 2, number range is greater than 0.3m; Build hanging river 4, said a copious, rapid flow of words 4 river bed are higher than said salt-soda soil 1 face of land lowest part; Build reservoir 5; Said reservoir 5 constructive depths are about 10m; The construction of said reservoir 5 adopts extraction ground bed mud sand to cause the mode that the ground caved in and form, and the said reservoir 5 savings water waters surface are lower than the groundwater table of said water table 2, so that when the groundwater table of water table 2 is higher than the reservoir 5 savings water waters surface; The underground water of water table 2 flows in the said reservoir 5 through the osmosis of soil, and the water in said water table 2, a copious, rapid flow of words 4 and the reservoir 5 also can be used as water conservancy irrigation.
During practical implementation of the present invention; Said picotan 3 is with the underground water suction hanging river 4 or the reservoir 5 of said water table 2; The groundwater table and said salt-soda soil 1 face of land drop that guarantee said water table 2 are the difficult numerical value that produces the capillary force effect; Present embodiment mileage value scope is greater than 0.3m, when preventing native face evaporation on the face of land surface detention saline and alkaline.
In sum; The present invention extracts the underground water of said water table 2 through utilizing picotan 3; And underground water entered in hanging river 4 and the reservoir 5, the groundwater table that guarantees water table 2 and salt-soda soil 1 face of land lowest part drop are for being difficult for producing the numerical value of capillary force effect, and while underground water flows in the said reservoir 5 through the osmosis of soil; Keep peripheral groundwater table and the face of land, salt-soda soil drop enduringly, and then transformation salinity ground soil property.
The above embodiment has only expressed one embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as limitation of the scope of the invention.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the present invention's design, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with accompanying claims.
Claims (5)
1. the improvement method in a salt-soda soil; It is characterized in that: comprise the water table (2) under the prospecting salt-soda soil (1) and the face of land, salt-soda soil (1); Build picotan (3), hanging river (4) and reservoir (5); Said hanging river (4) river bed is higher than the face of land, said salt-soda soil (1) lowest part; Said picotan (3) extract the underground water of said water table (2) and send into said hanging river (4) or reservoir (5) in, the groundwater table of said water table (2) and the face of land, said salt-soda soil (1) lowest part drop are for be difficult for producing the numerical value of capillary force effect.
2. the improvement method in a kind of salt-soda soil according to claim 1 is characterized in that: said number range is for greater than 0.3m.
3. the improvement method in a kind of salt-soda soil according to claim 1, it is characterized in that: said picotan (3) is wind-driven water pump, diesel powered water elevator or electric power water elevator.
4. the improvement method in a kind of salt-soda soil according to claim 1 is characterized in that: the construction of said reservoir (5) is adopted and is extracted ground bed mud sand and cause the mode that the ground caved in and form.
5. the improvement method in a kind of salt-soda soil according to claim 1 is characterized in that: said reservoir (5) the savings water water surface is lower than the groundwater table with said water table (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100173285A CN102535383A (en) | 2012-01-19 | 2012-01-19 | Saline-alkali land treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100173285A CN102535383A (en) | 2012-01-19 | 2012-01-19 | Saline-alkali land treatment method |
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| CN102535383A true CN102535383A (en) | 2012-07-04 |
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| CN2012100173285A Pending CN102535383A (en) | 2012-01-19 | 2012-01-19 | Saline-alkali land treatment method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006026472A (en) * | 2004-07-13 | 2006-02-02 | Asahi Kagaku Kogyo Co Ltd | Method for neutralizing alkali soil and leachate from the soil |
| CN101336593A (en) * | 2008-08-08 | 2009-01-07 | 高雅琦 | Method for constructing ecology garden landscape compound structures to improve salt-affected soil |
| CN201763562U (en) * | 2009-01-13 | 2011-03-16 | 邝生林 | Wind-driven water pumping unit |
| CN201794057U (en) * | 2010-04-20 | 2011-04-13 | 陈匍林 | Shallow sea reclamation structure |
-
2012
- 2012-01-19 CN CN2012100173285A patent/CN102535383A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006026472A (en) * | 2004-07-13 | 2006-02-02 | Asahi Kagaku Kogyo Co Ltd | Method for neutralizing alkali soil and leachate from the soil |
| CN101336593A (en) * | 2008-08-08 | 2009-01-07 | 高雅琦 | Method for constructing ecology garden landscape compound structures to improve salt-affected soil |
| CN201763562U (en) * | 2009-01-13 | 2011-03-16 | 邝生林 | Wind-driven water pumping unit |
| CN201794057U (en) * | 2010-04-20 | 2011-04-13 | 陈匍林 | Shallow sea reclamation structure |
Non-Patent Citations (1)
| Title |
|---|
| 韩霁昌: "陕西卤泊滩盐碱地综合治理模式及机理研究", 《中国博士学位论文全文数据库（农业科技辑）》, no. 2, 28 February 2011 (2011-02-28) * |
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Effective date of abandoning: 20120704 |
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