CN114342596A - Method for improving sandy soil of river bank channel and application - Google Patents
Method for improving sandy soil of river bank channel and application Download PDFInfo
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- CN114342596A CN114342596A CN202210075895.XA CN202210075895A CN114342596A CN 114342596 A CN114342596 A CN 114342596A CN 202210075895 A CN202210075895 A CN 202210075895A CN 114342596 A CN114342596 A CN 114342596A
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- 239000002689 soil Substances 0.000 title claims abstract description 107
- 238000000034 method Methods 0.000 title claims abstract description 36
- 239000010802 sludge Substances 0.000 claims abstract description 37
- 230000006872 improvement Effects 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 16
- 238000009283 thermal hydrolysis Methods 0.000 claims abstract description 8
- 229920002401 polyacrylamide Polymers 0.000 claims description 7
- 244000025254 Cannabis sativa Species 0.000 claims description 5
- 230000007480 spreading Effects 0.000 claims description 5
- 206010016807 Fluid retention Diseases 0.000 abstract description 8
- 230000000813 microbial effect Effects 0.000 abstract description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 230000035558 fertility Effects 0.000 abstract description 4
- 239000002688 soil aggregate Substances 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 2
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 2
- 239000011574 phosphorus Substances 0.000 abstract description 2
- 239000011591 potassium Substances 0.000 abstract description 2
- 229910052700 potassium Inorganic materials 0.000 abstract description 2
- 239000003337 fertilizer Substances 0.000 description 5
- 241000894006 Bacteria Species 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000029087 digestion Effects 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 230000008595 infiltration Effects 0.000 description 3
- 238000001764 infiltration Methods 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 241000233866 Fungi Species 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 235000015097 nutrients Nutrition 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000008635 plant growth Effects 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 241000209504 Poaceae Species 0.000 description 1
- 239000012615 aggregate Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000012010 growth Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 231100000989 no adverse effect Toxicity 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
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Abstract
The invention belongs to the technical field of soil improvement, and discloses a method for improving sandy soil of a river bank channel and application thereof, wherein the method comprises the following steps: applying 1kg/m on desertified river beach ground respectively2、5kg/m2、10kg/m2、15kg/m2The sludge is digested by thermal hydrolysis; fully mixing the sludge and the soil by adopting a mode of combining broadcasting and ploughing; planting shrubs and shrubs, and applying the water-retaining agent to the shrubs. After the sludge is used for broadcasting and ploughing, the water content of the soil can be effectively improved, the water retention of the soil is enhanced, and the effect of slow seepage on the soil is achieved. The stability of soil aggregate is improved, the contents of organic matters, total nitrogen, total phosphorus, quick-acting potassium and the like are improved, the soil fertility is improved, and meanwhile, the generated runoff water does not pollute the surrounding environment. The sludge improvement is beneficial to improving the microbial diversity of the soil.
Description
Technical Field
The invention belongs to the technical field of soil improvement, and particularly relates to a method for improving sandy soil of a river bank channel and application of the method.
Background
At present, sandy soil refers to clay with a content of sand component larger than that of powder component. The soil generally refers to soil with similar properties to sandy soil, the physical clay content of the soil is 15%, and the soil is mainly distributed in northwest areas of China, such as the mountain plains of Xinjiang, Gansu, Ningxia, inner Mongolia and Qinghai, and river banks and coastal plains of various areas. Although the content of sand particles is high, the particles are coarse, the specific surface area is small, the number of large pores among the particles is large, the air permeability and the water permeability of soil are good, the water drainage in soil is smooth, and water supporting, waterlogging and water retention on the upper layer are not easy to generate. However, the soil has poor storage property, poor water retention, water retention and fertilizer retention performance, unstable soil aggregates, easy water and fertilizer loss after rain, mostly in a very deficient state, high water evaporation rate, much water loss, difficult support of plant survival in a physical state of soil and difficult land establishment.
The sandy river bank soil has poor standing conditions, the soil porosity of most sample plots in the watershed is not in a normal range, the ratio of the size to the gap of the soil is far smaller than an appropriate value, and the water content is low, so that the soil improvement and the plant growth are not facilitated. And (4) grading the soil in the river basin according to the aggregate stability grading index, and judging that the soil aggregates in the river basin are unstable and are easy to erode. The chemical nutrients of the soil in the river basin are classified according to the content of the soil nutrients in the country, the fertility indexes of the soil are in a lack state, and the fertility condition of the soil is poor. The soil has high penetration rate, which is not beneficial to conserving water in the soil. Therefore, it is highly desirable to improve soil and improve the physicochemical properties of soil.
The prior art (the research progress of foreign sludge land utilization is reviewed by \ "bear jun \") discloses a method for improving soil by using sludge, but the method has more manual processes, wastes time and labor and has higher raw material cost. The artificial addition of chemical compound fertilizer easily causes non-point source pollution and influences the river habitat.
Through the above analysis, the problems and defects of the prior art are as follows: the existing sandy soil improvement method has the defects of more processes, time and labor waste and higher raw material cost, and the addition of chemical compound fertilizer easily causes non-point source pollution and influences the river environment.
The difficulty in solving the above problems and defects is: although the addition of the chemical compound fertilizer can temporarily change the land conditions of the riparian zone, the water eutrophication can be caused, the river ecological environment is influenced, and the environment-friendly and sustainable development is not facilitated.
The significance of solving the problems and the defects is as follows: the method is simpler in operation and lower in price, and the habitat of the sandy riparian zone is changed. Provides a new idea for plant growth, water and sand retention and prevention and control of water and soil loss in the riparian zone.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a method for improving sandy soil of a river bank channel.
The invention is realized in such a way that a method for improving sandy soil of a river bank channel comprises the following steps: the method is characterized in that hot water is used for digesting sludge, the sludge is mixed with the riparian zone soil in combination with ploughing, and then grass and shrubs are planted to improve the sandy riparian zone soil.
Further, the method for improving the sandy soil of the river bank channel comprises the following steps:
step one, applying different amounts of sludge on desertified river beach land;
step two, fully mixing the sludge and the soil by adopting a mode of combining broadcasting and ploughing; the sludge which is originally a pollutant is improved in the physicochemical property of the sandy riparian zone, so that the purpose of preventing water loss and soil erosion by water retention and sand retention is achieved;
planting grass, and applying a water-retaining agent to shrubs. The water-retaining agent is nontoxic, safe and environment-friendly, has no adverse effect on plants, soil and underground water, and assists the plants to grow in the improved soil.
Further, the sludge is thermal hydrolysis digestion sludge.
Further, in the first step, the applying different amounts of the thermally hydrolyzed digested sludge on the desertified beach land comprises:
applying 1kg/m on desertified river beach land respectively2、5kg/m2、10kg/m2、15kg/m2The thermal hydrolysis of (2) digests the sludge.
Further, the broadcasting comprises: and uniformly spreading or spreading the sludge on the soil to be improved in a mechanical and manual combined mode.
Further, in the second step, the plowing comprises: the plowing depth is 20 cm.
Further, the third step is performed before: the soil improvement state was analyzed by measuring the physicochemical properties of the soil.
Further, the water-retaining agent is a polyacrylamide water-retaining agent.
Further, the application of the water-retaining agent to shrubs includes: 50g of polyacrylamide water retention agent is used for each shrub.
The invention also aims to provide application of the method for improving the sandy soil of the riverbank road in soil improvement.
By combining all the technical schemes, the invention has the advantages and positive effects that: the composite organic fertilizer is added by a manual means without excessive use, the harm is changed into the benefit, the sludge which is originally a pollutant is introduced into the sandy riparian zone soil for improvement, the trouble of the sludge is solved, and the physicochemical property of the sandy soil is improved. The invention can improve the soil condition, which is suitable for soil growth, to improve the whole river field, and build green ecological channel.
After the sludge is used for broadcasting and ploughing, the water content of the soil can be effectively improved, the water retention of the soil is enhanced, and the effect of slow seepage on the soil is achieved. The stability of soil aggregate is improved, the contents of organic matters, total nitrogen, total phosphorus, quick-acting potassium and the like are improved, the soil fertility is improved, and meanwhile, the generated runoff water does not pollute the surrounding environment. The sludge improvement is beneficial to improving the microbial diversity of the soil.
Drawings
Fig. 1 is a flow chart of a method for improving sandy soil of a river bank channel, which is provided by the embodiment of the invention.
FIG. 2 is a graph showing the change in organic matter content (g/kg) before and after modification according to an embodiment of the present invention.
FIG. 3 is a schematic illustration of the average mass diameter (mm) of soil provided by an embodiment of the present invention.
FIG. 4 is a schematic diagram of the soil infiltration curve (mm/min) before and after improvement provided by the embodiment of the present invention.
FIG. 5 is a graph comparing the steady infiltration rates of soil provided by the embodiments of the present invention; in fig. 5: (a) (ii) a april permeation rate; (b) a May penetration rate; (c) june permeation rate.
FIG. 6 is a schematic representation of the biodiversity of fungi in soil microorganisms provided by an embodiment of the present invention; in fig. 6: (a) soil microbial bacteria chao1 index; (b) a soil microbial bacterium shannon index; (c) soil microbial bacteria PD _ hold _ tree; (d) soil microbial bacteria.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Aiming at the problems in the prior art, the invention provides a method for improving sandy soil of a river bank channel, and the invention is described in detail below by combining the attached drawings.
The method for improving the sandy soil of the river bank channel provided by the embodiment of the invention comprises the following steps: the sandy soil of the river bank is improved by utilizing the thermal hydrolysis digestion sludge in combination with ploughing and grass-irrigation planting.
As shown in fig. 1, the method for improving sandy soil of a river bank channel provided by the embodiment of the invention comprises the following steps:
s101, respectively applying 1kg/m on desertification river beach ground2、5kg/m2、10kg/m2、15kg/m2The sludge is digested by thermal hydrolysis;
s102, uniformly spreading or flatly paving the sludge on the soil to be improved in a mechanical and manual combined mode; ploughing the soil to be improved to fully mix the sludge and the soil;
s103, analyzing the soil improvement state by measuring the physical and chemical properties of the soil; planting grass, and applying polyacrylamide water-retaining agent to shrubs.
The plowing provided by the embodiment of the invention comprises the following steps: the plowing depth is 20 cm.
The embodiment of the invention provides a water-retaining agent applied to shrubs, which comprises the following components: 50g of polyacrylamide water retention agent is used for each shrub.
The technical solution of the present invention is further illustrated by the following specific examples.
The novel soil improvement method provided by the invention comprises the following steps:
different amounts of thermal hydrolysis digestion sludge are applied to the desertification river beach land (4 treatments are set, the application amount of the thermal hydrolysis digestion sludge is 1kg/m respectively2、5kg/m2、10kg/m2、15kg/m2)。
The method adopts a broadcasting and plowing mode (in the broadcasting process, sludge is uniformly spread or tiled to an improved land by adopting a mode of combining machinery and manpower), and the plowing depth is 20 cm.
After the broadcasting is finished, fully mixing the sludge with the soil by using a turning machine to improve the soil;
the soil improvement effect is analyzed by measuring the physical and chemical properties of the soil.
Planting shrubs and grasses, wherein 50g of polyacrylamide water-retaining agent is used for each shrub.
The technical effects of the present invention will be described in detail with reference to specific embodiments.
The invention has the following specific application: soil improvement is carried out in each banker river section from the Rugou bridge to the Beam of the Yongding river (Beijing section), and the change of physicochemical properties after improvement is as shown in figure 2, which is a schematic diagram of the change (g/kg) of organic matter content before and after improvement provided by the embodiment of the invention. FIG. 3 is a schematic illustration of the average mass diameter (mm) of soil provided by an embodiment of the present invention. FIG. 4 is a schematic diagram of the soil infiltration curve (mm/min) before and after improvement provided by the embodiment of the present invention. Fig. 5 (a) to 5 (c) are graphs comparing the permeation rate of soil stability provided by the embodiment of the present invention. FIGS. 6 (a) -6 (d) are schematic diagrams of the biodiversity of fungi in soil microorganisms provided by embodiments of the present invention.
The above description is only for the purpose of illustrating the present invention and the appended claims are not to be construed as limiting the scope of the invention, which is intended to cover all modifications, equivalents and improvements that are within the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A method for improving sandy soil of a river bank channel is characterized in that the method for improving sandy soil of the river bank channel utilizes hot water to digest sludge and combines plowing; mixing the sludge with the riparian zone soil, and planting shrubs and grass to improve the sandy riparian zone soil.
2. The method for improving sandy soil of a river bank channel according to claim 1, wherein the method for improving sandy soil of a river bank channel comprises the steps of:
step one, applying different amounts of sludge on desertified river beach land;
step two, fully mixing the sludge and the soil by adopting a mode of combining broadcasting and ploughing;
planting grass, and applying a water-retaining agent to shrubs.
3. The method for improving sandy soil of a riparian road according to claim 2, wherein the sludge is thermally hydrolyzed digested sludge.
4. The method for improving sandy soil of a riparian land according to claim 2, wherein the step one of applying different amounts of the thermally hydrolyzed digested sludge to the deserted beach land comprises: respectively applying 10kg/m on desertified river beach ground2The thermal hydrolysis of (2) digests the sludge.
5. The method of riverway sandy soil improvement as recited in claim 2 wherein said broadcasting comprises: and spreading or spreading the sludge on the soil to be improved in a mechanical and manual combined mode.
6. The method for improving sandy soil of a riparian road according to claim 2, wherein in the second step, the plowing comprises: the plowing depth is 20 cm.
7. The method for improving sandy soil of a riparian road according to claim 2, wherein the third step is further preceded by: the soil improvement state was analyzed by measuring the physicochemical properties of the soil.
8. The method for improving sandy soil of a river bank channel according to claim 2, wherein the water retaining agent is a polyacrylamide water retaining agent.
9. The method of riverway sandy soil improvement as claimed in claim 2, wherein said applying a water retaining agent to shrubs comprises: 50g of polyacrylamide water retention agent is used for each shrub.
10. Use of a method of improving sandy soil of a riparian road according to any one of claims 1 to 9 for soil improvement.
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| CN202210075895.XA CN114342596A (en) | 2022-01-23 | 2022-01-23 | Method for improving sandy soil of river bank channel and application |
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| CN202210075895.XA CN114342596A (en) | 2022-01-23 | 2022-01-23 | Method for improving sandy soil of river bank channel and application |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001295240A (en) * | 2000-04-14 | 2001-10-26 | Fujita Corp | Mixed soil for artificial dry beach |
| JP2007044636A (en) * | 2005-08-11 | 2007-02-22 | Tochi Kairyo Center:Kk | Technique for improving soil |
| CN102754540A (en) * | 2012-06-26 | 2012-10-31 | 辽宁大学 | Sandy soil improving method |
| WO2017008473A1 (en) * | 2015-07-13 | 2017-01-19 | 河海大学 | Desalination method by using sludge to improve topsoil of saline and alkaline land |
| CN107624391A (en) * | 2017-10-09 | 2018-01-26 | 北京军秀咨询有限公司 | A kind of method of plant sludge biological carbon soil joint restoration of the ecosystem prone soil |
| CN108293347A (en) * | 2017-10-09 | 2018-07-20 | 北京林业大学 | The method for improveing soil |
| CN110337855A (en) * | 2019-08-28 | 2019-10-18 | 中铁三局集团有限公司 | Sandy soil modification method |
| CN111116276A (en) * | 2020-01-19 | 2020-05-08 | 安徽理工大学 | Method for improving sandy soil of mining area by using waste coal slime |
-
2022
- 2022-01-23 CN CN202210075895.XA patent/CN114342596A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001295240A (en) * | 2000-04-14 | 2001-10-26 | Fujita Corp | Mixed soil for artificial dry beach |
| JP2007044636A (en) * | 2005-08-11 | 2007-02-22 | Tochi Kairyo Center:Kk | Technique for improving soil |
| CN102754540A (en) * | 2012-06-26 | 2012-10-31 | 辽宁大学 | Sandy soil improving method |
| WO2017008473A1 (en) * | 2015-07-13 | 2017-01-19 | 河海大学 | Desalination method by using sludge to improve topsoil of saline and alkaline land |
| CN107624391A (en) * | 2017-10-09 | 2018-01-26 | 北京军秀咨询有限公司 | A kind of method of plant sludge biological carbon soil joint restoration of the ecosystem prone soil |
| CN108293347A (en) * | 2017-10-09 | 2018-07-20 | 北京林业大学 | The method for improveing soil |
| CN110337855A (en) * | 2019-08-28 | 2019-10-18 | 中铁三局集团有限公司 | Sandy soil modification method |
| CN111116276A (en) * | 2020-01-19 | 2020-05-08 | 安徽理工大学 | Method for improving sandy soil of mining area by using waste coal slime |
Non-Patent Citations (1)
| Title |
|---|
| 魏琳琳等: "基于热水解的厌氧消化污泥对沙土养分调节及细菌群落的影", 《环境生态学》 * |
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Application publication date: 20220415 |