CN112335368A - Method for improving soil in region with groundwater as saline water - Google Patents
Method for improving soil in region with groundwater as saline water Download PDFInfo
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- CN112335368A CN112335368A CN202011012240.5A CN202011012240A CN112335368A CN 112335368 A CN112335368 A CN 112335368A CN 202011012240 A CN202011012240 A CN 202011012240A CN 112335368 A CN112335368 A CN 112335368A
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- water
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- soil
- cofferdam
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B79/00—Methods for working soil
- A01B79/02—Methods for working soil combined with other agricultural processing, e.g. fertilising, planting
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G17/00—Cultivation of hops, vines, fruit trees, or like trees
- A01G17/005—Cultivation methods
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G25/00—Watering gardens, fields, sports grounds or the like
Abstract
The invention belongs to the technical field of soil improvement, and particularly relates to a method for improving soil in a region with saline groundwater, which comprises the following steps: a. planning a leakage bearing area; b. constructing the inside of the leakage bearing area; c. building a cofferdam; d. laying a water collecting well and a water suction pipe; e. and (5) leaching the surface salt. The invention controls the underground water level through the bearing and discharging area and the water suction pipe, irrigates and leaches the salt on the earth surface by fresh water, discharges the high salinity water to the bearing and discharging area, improves the soil by comprehensive measures of chemistry, biology, agriculture and the like, leads each index of the soil to reach the degree required by the growth of plants, and leads the agriculture and animal husbandry to realize the development of saving, high quality, high yield and stable yield.
Description
Technical Field
The invention belongs to the technical field of soil improvement, and particularly relates to a method for improving soil in a region with saline groundwater.
Background
The soil is soaked in the saline water for a long time, so that the volume weight of the soil is increased, the porosity of the soil is reduced, the saturation hydraulic conductivity of the soil is reduced, the normal growth of the agricultural and herd crops is seriously influenced, and the improvement of the soil with the underground water as the saline water area is very necessary. For areas with high underground water level, high mineralization degree of underground water, flat terrain and unsmooth flow of underground water, even if some swales exist, the lowest part of the swales is not greatly different from the elevation of the peripheral ground, if the land is to be improved, a drainage ditch needs to be dug or a concealed pipe needs to be laid to reduce the underground water level, the underground water in the improved area is drained to the swales, and if the land is not improved, the caused submerged area is large.
Disclosure of Invention
In view of the above problems, the present invention provides a method for improving soil in a region where groundwater is saline water, which is simple to operate, low in cost and high in efficiency.
The purpose of the invention is realized by the following technical scheme:
a soil improvement method for an area with groundwater as saline water comprises the following steps:
a. planning a leakage bearing area: planning the low-lying land into a drainage area;
b. constructing the inside of the leakage bearing area: arranging a salt field in the leakage bearing area, and building an evaporation pool and a crystallization pool in the salt field;
c. building a cofferdam: building cofferdams around the leakage bearing area, wherein the area and the height of the cofferdams are determined according to the water quantity generated by controlling the underground water level in the improved area, the inner side of the cofferdams is the leakage bearing area, the outer side of the cofferdams is provided with an annular ecological lifting area, and the outer side of the ecological lifting area is a farming and animal husbandry production area;
d. laying a water collecting well and a water suction pipe: a water collecting well and a water suction pipe are arranged on the outer side of the cofferdam; the water collecting well is communicated with the leakage bearing area through a water outlet pipe buried below the ground; the water suction pipe is annularly arranged under the ground outside the cofferdam and is disconnected at the position of the water collecting well, two fractures are communicated with the water collecting well, and a plurality of water suction holes are formed in the water suction pipe; a water level controller and a solar water pump are installed in the water collecting well;
e. leaching surface salt: leaching the surface salinity of the ecological promotion area and the farming and animal husbandry production area through fresh water irrigation, forming hypersalinity water after the surface salinity is leached by the fresh water, infiltrating the subsurface into the water absorption pipe, conveying the hypersalinity water to the water collection well through the water absorption pipe, discharging the hypersalinity water to the leakage bearing area through the water outlet pipe in the water collection well, evaporating the leakage bearing area through an evaporation pool and a crystallization pool to reduce the water quantity, producing crude salt, and reducing the salinity content of the leakage bearing area; when the water level of the leakage bearing area is high, seepage flow can be generated to the area with low underground water level through the underground, and water seeped out of the leakage bearing area can be sucked and intercepted by the water suction pipe on the outer side of the cofferdam and is discharged back to the leakage bearing area.
Further, the width of the ecological lifting area outside the cofferdam is 50-80 m.
Furthermore, salt-tolerant arbor and shrub grasses are planted in the ecological promotion area and the farming and animal husbandry production area. Although the underground water level is controlled by arranging the water suction pipes, the salt content of the ecological lifting area is slowly reduced due to the reverse osmosis influence of the leakage bearing area, so that salt-tolerant arbor and shrub grasses need to be planted to increase the ground coverage, improve the ecological function, reduce evaporation and inhibit the salt return of soil. The ecological lifting area can be widened or narrowed according to the change and development requirements of soil salinity.
Furthermore, water in the leakage bearing area firstly enters the evaporation tank to evaporate most of water and then flows into the crystallization tank for crystallization in a natural flow or water pump suction mode.
Further, the number of the suction pipes is multiple.
Further, the number of the water collecting wells is one or more.
Furthermore, a water collecting well and a water suction pipe are arranged in the production area and the ecological promotion area of the farming and animal husbandry.
Furthermore, the suction pipes and the water collecting well are arranged towards the direction of the cofferdam from the position 100-120m away from the outer side of the cofferdam.
The invention controls the underground water level through the bearing and discharging area and the water suction pipe, irrigates and leaches the salt on the earth surface by fresh water, discharges the high salinity water to the bearing and discharging area, improves the soil by comprehensive measures of chemistry, biology, agriculture and the like, leads each index of the soil to reach the degree required by the growth of plants, and leads the agriculture and animal husbandry to realize the development of saving, high quality, high yield and stable yield.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
FIG. 1 is a layout diagram of a soil improvement area in a soil improvement method for an area where groundwater is saline water;
shown in the figure: 1-ecological lifting area, 2-bearing and discharging area, 3-cofferdam, 4-suction pipe, 5-evaporation tank, 6-crystallization tank, 7-water outlet pipe and 8-water collecting well.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
It should be understood that the structures, proportions, and dimensions shown in the drawings and described herein are for illustrative purposes only and are not intended to limit the scope of the present invention, which is defined by the claims, but rather by the claims. In addition, the terms such as "upper", "lower", "left", "right" and "middle" used in the present specification are for convenience of description only, and are not intended to limit the scope of the present invention, and changes or modifications of the relative relationship thereof may be regarded as the scope of the present invention without substantial changes in the technical contents.
Example (b):
as shown in fig. 1, which is a layout diagram of an improved area in the present application, a receiving and draining area 2 is provided at a low position where groundwater is a saline water area, the receiving and draining area is surrounded by a cofferdam 3, an evaporation pond 5 and a crystallization pond 6 are provided in the receiving and draining area 2, and the evaporation pond 5 and the crystallization pond 6 are used for reducing water amount by evaporation after water in the receiving and draining area 2 is put therein, thereby producing crude salt. The area 50-80m wide at the periphery of the cofferdam 3 is an ecological promotion area 1, wherein salt-tolerant arbor and shrub grasses are planted, and the area at the periphery of the ecological promotion area 1 is a farming and animal husbandry production area; a suction pipe 4 and a water collecting well 8 are arranged outside the surrounding cofferdam 3 in the production area and the ecological promotion area 1 of the farming and animal husbandry; the suction pipe 4 is communicated with the water collecting well 8; the water collecting well 8 is communicated with the interior of the leakage bearing area 2 through a water outlet pipe 7 penetrating through the cofferdam 3.
The invention relates to a method for improving soil in a region with saline water as underground water, which comprises the following steps:
a. planning a leakage bearing area 2: and (4) planning the low-lying area into a drainage area 2.
b. The inside of the leakage bearing area 2 is constructed: a salt field is arranged in the leakage bearing area 2, and an evaporation pool 5 and a crystallization pool 6 are built in the salt field. The water in the leakage area 2 firstly enters the evaporation tank 5 to evaporate most of water and then flows into the crystallization tank 6 for crystallization in a natural flow or water pump suction mode.
c. Building a cofferdam 3: building a cofferdam 3 around the pressure and drainage area 2, determining the area of the pressure and drainage area 2 and the height of the cofferdam 3 according to the water quantity generated by controlling the underground water level in the improved area, wherein the pressure and drainage area is arranged at the inner side of the cofferdam 3, an annular ecological lifting area 1 is arranged at the outer side of the cofferdam 3, and the width of the ecological lifting area 1 is 50-80 m; the outside of the ecological promotion area 1 is a production area of agriculture and animal husbandry.
d. And (3) laying a water collecting well 8 and a water suction pipe 4: a water collecting well 8 and a water suction pipe 4 are arranged outside the cofferdam 3; the water collecting well 8 is communicated with the leakage bearing area 2 through a water outlet pipe 7 buried below the ground; the water suction pipe 4 is arranged under the ground outside the cofferdam 3 in a surrounding manner and is disconnected at the position of the water collecting well 8, two fractures of the water suction pipe 4 are communicated with the water collecting well 8, and a plurality of water suction holes are formed in the water suction pipe 4; a water level controller and a solar water pump are arranged in the water collecting well 8. In order to ensure the water absorption effect of the water absorption pipe 4, after the water absorption pipe 4 is arranged, a low-pressure pump is connected to the connection part of the water absorption pipe 4 and the water collecting well 8 to suck the air in the water absorption pipe 4, and the water outside the water absorption pipe 4 can automatically flow into the water absorption pipe 4. The number of the suction pipes 4 is multiple. The number of the water collecting wells 8 is one or more. A water collecting well 8 and a water suction pipe 4 are arranged in the production area and the ecological promotion area of the farming and animal husbandry. The suction pipes 4 and the water collecting well 8 are arranged in the direction of the cofferdam 3 from the position 100-120m away from the outer side of the cofferdam 3.
e. Leaching surface salt: the method comprises the following steps of leaching the surface salinity of the ecological promotion area 1 and the farming and animal husbandry production area through fresh water irrigation, forming high salinity water after the surface salinity is leached through the fresh water, infiltrating the underground water, sucking the high salinity water into a water suction pipe 4, conveying the high salinity water to a water collecting well 8 through the water suction pipe 4, discharging the high salinity water to a leakage bearing area 2 through a water outlet pipe 7 in the water collecting well 8, evaporating the high salinity water in the leakage bearing area 2 through an evaporation pond 5 and a crystallization pond 6 to reduce the water quantity, producing crude salt, and reducing the salinity content in the leakage bearing area 2; when the water level of the leakage bearing area 2 is high, seepage flow can be generated to the area with low underground water level through the ground, and water seeped out of the leakage bearing area 2 can be sucked and intercepted by the water suction pipe 4 on the outer side of the cofferdam 3 and is discharged back to the leakage bearing area 2.
Salt-tolerant arbor and shrub grasses are planted in the ecological promoting area 1 and the production area of agriculture and animal husbandry. Although the underground water level is controlled by arranging the water suction pipe 4, the salt content of the ecological lifting area 1 is slowly reduced due to the reverse osmosis influence of the leakage bearing area 2, so that salt-resistant arbor and shrub grasses need to be planted to increase the ground coverage, improve the ecological function, reduce evaporation and inhibit the salt return of soil. The ecological lifting area can be widened or narrowed according to the change and development requirements of soil salinity.
It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The scope of the present invention is not limited to the technical solutions disclosed in the embodiments, and any modifications, equivalent substitutions, improvements, etc. made to the above embodiments according to the technical spirit of the present invention fall within the scope of the present invention.
Claims (8)
1. A soil improvement method for an area with groundwater as saline water is characterized by comprising the following steps:
a. planning a leakage bearing area: planning the low-lying land into a drainage area;
b. constructing the inside of the leakage bearing area: arranging a salt field in the leakage bearing area, and building an evaporation pool and a crystallization pool in the salt field;
c. building a cofferdam: building cofferdams around the leakage bearing area, wherein the area and the height of the cofferdams are determined according to the water quantity generated by controlling the underground water level in the improved area, the inner side of the cofferdams is the leakage bearing area, the outer side of the cofferdams is provided with an annular ecological lifting area, and the outer side of the ecological lifting area is a farming and animal husbandry production area;
d. laying a water collecting well and a water suction pipe: a water collecting well and a water suction pipe are arranged on the outer side of the cofferdam; the water collecting well is communicated with the leakage bearing area through a water outlet pipe buried below the ground; the water suction pipe is annularly arranged under the ground outside the cofferdam and is disconnected at the position of the water collecting well, two fractures are communicated with the water collecting well, and a plurality of water suction holes are formed in the water suction pipe; a water level controller and a solar water pump are installed in the water collecting well;
e. leaching surface salt: leaching the surface salinity of the ecological promotion area and the farming and animal husbandry production area through fresh water irrigation, forming hypersalinity water after the surface salinity is leached by the fresh water, infiltrating the subsurface into the water absorption pipe, conveying the hypersalinity water to the water collection well through the water absorption pipe, discharging the hypersalinity water to the leakage bearing area through the water outlet pipe in the water collection well, evaporating the leakage bearing area through an evaporation pool and a crystallization pool to reduce the water quantity, producing crude salt, and reducing the salinity content of the leakage bearing area; when the water level of the leakage bearing area is high, seepage flow can be generated to the area with low underground water level through the underground, and water seeped out of the leakage bearing area can be sucked and intercepted by the water suction pipe on the outer side of the cofferdam and is discharged back to the leakage bearing area.
2. The method for improving the soil in the saline water area by using underground water as claimed in claim 1, wherein the width of the ecological lifting area outside the cofferdam is 50-80 m.
3. The method for improving the soil in the saline groundwater region as claimed in claim 1, wherein salt-tolerant arbor and shrub grasses are planted in the ecological improvement area and the farming and animal husbandry production area.
4. The method for improving the soil in the region where the underground water is the salt water according to claim 1, wherein the water in the drainage area firstly enters an evaporation tank to evaporate most of water and then flows into a crystallization tank to be crystallized in a natural flow or water pump suction mode.
5. The method for improving the soil in the saline water area by using underground water as claimed in claim 1, wherein the number of the water suction pipes is multiple.
6. The method for improving the soil in the saline water area by using underground water as claimed in claim 1, wherein the number of the water collecting wells is one or more.
7. The method for improving the soil in the saline water area by using underground water as claimed in any one of claims 1 to 6, wherein a water collecting well and a water suction pipe are arranged in the production area and the ecological promotion area of the farming and animal husbandry.
8. The method for improving the soil in the region where the underground water is the salt water according to claim 7, wherein the suction pipes and the water collecting well are arranged in the direction of the cofferdam from the position 100-120m away from the outer side of the cofferdam.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011012240.5A CN112335368B (en) | 2020-09-23 | 2020-09-23 | Method for improving soil in region with groundwater as saline water |
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| CN202011012240.5A CN112335368B (en) | 2020-09-23 | 2020-09-23 | Method for improving soil in region with groundwater as saline water |
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| CN112335368A true CN112335368A (en) | 2021-02-09 |
| CN112335368B CN112335368B (en) | 2023-01-06 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102160480A (en) * | 2010-12-30 | 2011-08-24 | 天津泰达园林建设有限公司 | Saline-alkali soil irrigation and drainage ecological improvement method |
| CN203884337U (en) * | 2014-05-07 | 2014-10-22 | 天津农学院 | Salinization-area green-belt soil improving and rainwater collecting and utilizing system |
| CN107318447A (en) * | 2017-08-15 | 2017-11-07 | 中国科学院地理科学与资源研究所 | The tall shrub implantation methods of arid area shallow groundwater table heavy salinized ground drip irrigation |
| CN108966716A (en) * | 2018-07-04 | 2018-12-11 | 青岛全域盐碱地稻作改良研究院有限公司 | The four-dimensional improved method in salt-soda soil |
| CN108990452A (en) * | 2018-05-25 | 2018-12-14 | 河海大学 | A kind of replacement of coupling water table aquifer salt-fresh water and Leaching and desalinization device |
| US20190090409A1 (en) * | 2015-10-12 | 2019-03-28 | Shandong Sunway Landscape Technology Co., Ltd. | Coastal severe saline-alkali soil improvement and vegetation construction system |
-
2020
- 2020-09-23 CN CN202011012240.5A patent/CN112335368B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102160480A (en) * | 2010-12-30 | 2011-08-24 | 天津泰达园林建设有限公司 | Saline-alkali soil irrigation and drainage ecological improvement method |
| CN203884337U (en) * | 2014-05-07 | 2014-10-22 | 天津农学院 | Salinization-area green-belt soil improving and rainwater collecting and utilizing system |
| US20190090409A1 (en) * | 2015-10-12 | 2019-03-28 | Shandong Sunway Landscape Technology Co., Ltd. | Coastal severe saline-alkali soil improvement and vegetation construction system |
| CN107318447A (en) * | 2017-08-15 | 2017-11-07 | 中国科学院地理科学与资源研究所 | The tall shrub implantation methods of arid area shallow groundwater table heavy salinized ground drip irrigation |
| CN108990452A (en) * | 2018-05-25 | 2018-12-14 | 河海大学 | A kind of replacement of coupling water table aquifer salt-fresh water and Leaching and desalinization device |
| CN108966716A (en) * | 2018-07-04 | 2018-12-11 | 青岛全域盐碱地稻作改良研究院有限公司 | The four-dimensional improved method in salt-soda soil |
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| CN112335368B (en) | 2023-01-06 |
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Effective date of registration: 20230809 Address after: 710000, 7th Floor, South Zone, No. 3369 Gangze Road, International Port Area, Xi'an City, Shaanxi Province Patentee after: Zhonglin Ecological Environment Technology Co.,Ltd. Patentee after: Shaanxi Qincao Ecological Environment Technology Co.,Ltd. Address before: 712000 9 / F, building 5, headquarters economic Park, Fengxi New Town Management Committee, Xixian New District, Xianyang City, Shaanxi Province Patentee before: Shaanxi Qincao Ecological Environment Technology Co.,Ltd. |