CN111788896A - Rapid curing method for backfilling greening soil of urban relocation land and backfilling method - Google Patents
Rapid curing method for backfilling greening soil of urban relocation land and backfilling method Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 50
- 238000001723 curing Methods 0.000 title claims abstract description 48
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- 239000003895 organic fertilizer Substances 0.000 claims abstract description 13
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- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 9
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000010457 zeolite Substances 0.000 claims abstract description 9
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Classifications
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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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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D9/00—Other inorganic fertilisers
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/80—Soil conditioners
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Soil Sciences (AREA)
- Organic Chemistry (AREA)
- Pest Control & Pesticides (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Environmental Sciences (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention relates to the technical field of urban soil improvement, aims to realize the efficient utilization of high-quality alien soil, improve the survival rate and the growth speed of greening planting in a moved area, accelerate the growth of soil organisms and microorganisms after backfilling and further accelerate the curing process of the alien soil, and particularly relates to a rapid curing method and a backfilling method of backfilled greening alien soil in an urban moved area; the quick curing method comprises the steps of adding a soil curing conditioner into the alien soil before backfilling the alien soil, and uniformly mixing, wherein the raw material components of the soil curing conditioner comprise a biological organic fertilizer, zeolite, a compound microbial inoculum and a formulated chemical fertilizer; the backfilling method comprises curing the backfilled foreign soil to prepare backfilled square soil, adding fiber material into the backfilled square soil, and filling the backfilled square soil above the original soil layer; the curing method realizes the high-efficiency utilization of high-quality soil; the survival rate and the growth speed of the green planting in the moved land are improved; the curing process of the foreign soil is accelerated, and the soil fertility is improved.
Description
Technical Field
The invention relates to the technical field of urban soil improvement, aims to realize efficient utilization of high-quality alien soil, improve the survival rate and growth speed of greening planting in a moved area, accelerate the growth of soil organisms and microorganisms after backfilling and further accelerate the curing process of the alien soil, and particularly relates to a rapid curing method and a backfilling method of backfilled greening alien soil in an urban moved area.
Background
Facilities with low benefits and non-compliance with ecological environment protection in the built-up areas of the city are moved, and the vacated land blocks are used for other construction, and are called as city moving lands.
The greening of the urban relocation area is vital to the improvement of urban living environment, and the green ecological space can be expanded, the ecological space quality can be improved and people can enjoy more excellent ecological environment under the current situation of limited space of an extra-large city; 80-90% of construction greening in the current built-up area of Shanghai is carried out on land parcels such as abandoned lands, urban villages and villages, old factories and the like; however, the ground surface of the urban relocation is generally covered with a thick non-soil layer, and when the urban relocation is greened, the non-soil layer needs to be removed, as a result, the surface soil layer is lost, and pits with different sizes are formed, so that before the urban relocation is greened, the soil of other places needs to be transported to the relocation, backfilled, and the landform is built, and the foreign soil which is not native locally and moved from other places is called as the extra soil; the foreign soil backfilling technology and quality after the urban relocation land is transformed can directly influence the subsequent greening survival rate and greening effect.
Because high-quality soil resources are precious, less high-quality soil which can be used for foreign soil backfilling in a large scale is available, and generally, when foreign soil backfilling is carried out, deep soil or silt of a multi-purpose building foundation is formed in a natural state and has poor comprehensive fertility, and therefore greening planting barrier factors generally exist after backfilling.
Various current urban engineering constructions all can relate to the process of digging earth and backfilling, and in the work progress, its flow is: on-site investigation → ground obstacle cleaning → leveling range determination → level point setting → square grid setting → measurement elevation → calculation of the required amount of earth → leveling earth → acceptance → completion.
The alien soil backfilling in general infrastructure construction is only from the perspective of engineering construction, the purpose of reconstructing the terrain of a region is achieved, the soil curing process after alien soil backfilling is not considered, but the curing rate of alien soil directly influences the improvement rate of soil quality, and further influences the growth and landscape effects of plants, so that the traditional alien soil backfilling mode is not suitable for backfilling a moving place for urban greening.
Disclosure of Invention
The invention aims to provide a rapid curing method and a backfilling method for backfilling greening soil of an urban relocation land, which solve the problems of poor comprehensive fertility and greening planting barrier factors after backfilling in the existing backfilling soil, and realize the efficient utilization of high-quality soil; the survival rate and the growth speed of the green planting in the moved land are improved; obstacle factor improvement and bioactive organic substance addition are carried out before the alien soil is backfilled, the growth of soil organisms and microorganisms after backfilling is accelerated, further, the curing process of the alien soil is accelerated, the soil fertility is improved, the greening landscape effect is improved, and the chemical fertilizer investment for later-stage maintenance can be reduced.
The technical scheme adopted by the invention is as follows:
a method for quickly curing backfilled greening alien soil of an urban relocation land comprises the steps of adding a soil curing conditioner into alien soil before backfilling the alien soil, and uniformly mixing, wherein the raw material components of the soil curing conditioner comprise a biological organic fertilizer, zeolite, a compound microbial inoculum and a formula fertilizer.
Further, the soil curing conditioner comprises the following raw material components in percentage by weight: 15-50% of bio-organic fertilizer, 20-55% of zeolite, 10-20% of composite microbial inoculum and more than or equal to 5% of formulated fertilizer.
Further, the saidThe organic fertilizer is prepared by high-temperature composting fermentation of biomass materials, wherein the content of organic matters is more than 45%, the pH is 5.5-8.5, and the pH is (N + P)2O5+K2O)≥5％。
Furthermore, the components of the compound microbial inoculum comprise proteolytic enzyme, azotobacter, cellulose decomposition bacteria and antibiotic producing bacteria.
Furthermore, the fertilizer is prepared by measuring the content of nutrients in soil in the actually moved land and is used for supplementing the demand of quick-acting nutrients after the plant is transplanted.
Furthermore, the dosage of the soil curing conditioner in the using process is 500-1000 kg/mu.
In order to achieve the purpose, the application also provides a backfilling method of backfilling greening soil for the urban relocation land, the backfilling soil is cured to prepare backfilling square soil, meanwhile, fiber materials are added into the backfilling square soil, and then the backfilling square soil is filled above the original soil layer.
The principle introduction of the technical scheme of the invention is as follows:
most backfilled soil is lack of granular structures, so that soil hardening and serious adhesion obstacle are caused, organic fertilizer and microbial inoculum are added, soil biological activity can be excited, the organic acid content of the soil is increased through the humification process of organic materials, and the organic acid and soil minerals form an organic-inorganic complex, so that soil aggregates are formed, the physical condition of the soil is improved, water and nutrient can be preserved, and water, fertilizer, gas and heat of the soil can be timely supplied and coordinated for plants.
Zeolite is a natural silicate mineral with a framework structure, in which molecules are connected together like a scaffold, and a plurality of cavities are formed in the middle, and can be used as a conditioner to reduce the volume weight and the salt content of soil.
When the soil dressing and backfilling method is used for backfilling the removed land, soil fertilization and improvement are combined with engineering technology improvement processes, and organic acid is formed through the humification process of the organic material, so that soil minerals are polymerized to form soil aggregates, the physical and chemical properties of the soil are improved, and the soil curing process is accelerated.
Soil ripening refers to a process of gradually changing natural soil (raw soil) into fertile cultivated soil (ripe soil and oil soil) suitable for crop growth through human production activities and directional cultivation: the mark is soft and deep soil layer, high organic matter content, good soil structure, hydrothermal condition and permeability, high soil absorption capacity and vigorous microorganism activity, can not only retain water and nutrients, but also supply and coordinate water, fertilizer, gas and heat of soil for plants in time.
The backfill soil has large and multiple structure plates and sticky texture, so the drainage capability is poor, and when the backfill soil is moved and backfilled, drainage facilities need to be designed, the soil moisture condition is improved in an auxiliary way through engineering measures, and the curing process is accelerated; the invention provides a method for removing soil, which comprises the steps of adding a fiber material in the backfill process of a removed land, and evaporating excessive water absorbed in soil through gaps of capillary tubes; the fiber material capillary has rich gaps, and can absorb ineffective moisture absorbed in soil and transport the soil to the ground surface; the spreading area of the fiber material on the surface of the soil body is large, so that the water in the fiber material can be quickly evaporated, and the effect of regulating the soil water is achieved; after the excess water in the soil is discharged, the fiber material paved on the ground surface can be rolled up and contracted into a smaller volume, so that the evaporation is reduced; meanwhile, when watering, the fiber material can supplement the defects of poor soil structure and lack of capillary gaps, so that water is quickly infiltrated, the utilization efficiency of soil water is improved, the water and gas conditions of the soil are effectively adjusted, and soil curing is accelerated.
The soil conditioner is used after the engineering of the overground part of the urban relocation land is improved, soil is backfilled or before vegetation is planted, the soil conditioner is uniformly applied to the soil according to the using amount of 500-1000 kg/mu, the soil conditioner is matched with the terrain construction of a vegetation planting area after the soil conditioner is applied, and the soil conditioner and the soil can be fully mixed.
By adopting the technical scheme of the invention, the basic requirements of the vegetation on nutrients can be met, and in the specific implementation process, other chemical fertilizers can be added according to different requirements of different types of plants on nutrient element types; the soil fertility after the technical scheme of the invention is adopted cannot be gradually reduced along with the absorption of plants to nutrients, so that the application amount of the fertilizer does not tend to increase along with the time in the later maintenance process; moreover, the addition of the organic fertilizer and the natural minerals can gradually improve the soil structure, thereby reducing the volume weight of the soil.
In summary, compared with the prior art, the invention has the following beneficial effects:
(1) the soil fertility after the technical scheme of the invention is adopted can not be gradually reduced along with the absorption of plants to nutrients, so that the application amount of the fertilizer can not be in an increasing trend along with the time in the later maintenance process, and the addition of the organic fertilizer and the natural minerals can gradually improve the soil structure, thereby reducing the volume weight of the soil;
(2) the technical scheme of the invention realizes the high-efficiency utilization of the high-quality soil;
(3) the technical scheme of the invention improves the survival rate and the growth speed of the greening planting in the relocation area;
(4) according to the technical scheme, barrier factor improvement and bioactive organic substance addition are carried out before the alien soil is backfilled, so that the growth of soil organisms and microorganisms after backfilling can be accelerated, the curing process of the alien soil is further accelerated, the soil fertility is improved, the greening landscape effect is improved, and the chemical fertilizer investment for later-stage maintenance can be reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural diagram of the construction of the terrain and the shape of a pit in a backfill region;
FIG. 2 is a schematic view of a backfilled square soil with a fibrous material added thereto;
FIG. 3 is a flow chart of a guest soil process;
FIG. 4 is a technical flow chart of backfill and rapid curing of the removed foreign soil.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The invention will be further described with reference to the accompanying figures 1-4 and examples.
Example 1:
referring to fig. 1-4, the relocation area greening is planned to be a lawn, and the soil curing conditioner comprises the following components in percentage by weight: 45% of bio-organic fertilizer, 35% of zeolite, 15% of composite microbial inoculum and 5% of formulated fertilizer.
The method specifically comprises the following steps: the soil curing conditioner prepared from the components in percentage by weight is uniformly mixed with the backfill alien soil, and meanwhile, fiber materials are added into the backfill alien soil during backfilling, and then the soil curing conditioner is applied to street garden construction.
Detection of this example: after the green land is built for 1 year, soil organic matters, total nitrogen, cation exchange capacity, alkaline hydrolysis nitrogen, quick-acting phosphorus, quick-acting potassium, soil volume weight, soil ventilation porosity and soil mechanical composition in the reconstruction area are measured and compared with the soil of a conventional direct foreign soil backfilling scheme.
And (3) detection results: the total nitrogen and cation exchange capacity of soil organic matters in the method are improved by more than 8.6 percent, which shows that the method improves the nutrient storage capacity of the soil; the alkaline hydrolysis nitrogen, the quick-acting phosphorus and the quick-acting potassium are improved by over 9.2 percent, which shows that the method improves the nutrient supply of the soil; the volume weight of the soil is reduced by 5.1%, the air porosity of the soil is improved by 7.3%, and the proportion of the granular structure of the soil is improved by 12.3%. The method effectively accelerates the curing speed of the backfilled foreign soil.
Example 2:
referring to fig. 1-4, the relocation area greening is planned to be a lawn, and the soil curing conditioner comprises the following components in percentage by weight: 35% of bio-organic fertilizer, 45% of zeolite, 12% of composite microbial inoculum and 8% of formulated fertilizer.
The method specifically comprises the following steps: the soil curing conditioner prepared from the components in percentage by weight is uniformly mixed with the backfill alien soil, and meanwhile, fiber materials are added into the backfill alien soil during backfilling, and then the soil curing conditioner is applied to street garden construction.
Detection of this example: after the green land is built for 1 year, soil organic matters, total nitrogen, cation exchange capacity, alkaline hydrolysis nitrogen, quick-acting phosphorus, quick-acting potassium, soil volume weight, soil ventilation porosity and soil mechanical composition in the reconstruction area are measured and compared with the soil of a conventional direct foreign soil backfilling scheme.
And (3) detection results: the total nitrogen and cation exchange capacity of soil organic matters in the method are improved by more than 6.4 percent, which shows that the method improves the nutrient storage capacity of the soil; the alkaline hydrolysis nitrogen, the quick-acting phosphorus and the quick-acting potassium are improved by more than 7.2 percent, which shows that the method improves the nutrient supply of the soil; the volume weight of the soil is reduced by 7.1%, the air porosity of the soil is improved by 6.3%, and the proportion of the granular structure of the soil is improved by 8.8%. The method effectively accelerates the curing speed of the backfilled foreign soil.
Example 3:
referring to fig. 1-4, the moved area greening is planned to be an arbor planting area, and the soil curing conditioner consists of the following components in percentage by weight: 30% of bio-organic fertilizer, 50% of zeolite, 15% of composite microbial inoculum and 5% of formulated fertilizer.
The method specifically comprises the following steps: the soil curing conditioner prepared from the components in percentage by weight is uniformly mixed with the backfill alien soil, and meanwhile, fiber materials are added into the backfill alien soil during backfilling, and then the soil curing conditioner is applied to street garden construction.
Detection of this example: after the green land is built for 1 year, soil organic matters, total nitrogen, cation exchange capacity, alkaline hydrolysis nitrogen, quick-acting phosphorus, quick-acting potassium, soil volume weight, soil ventilation porosity and soil mechanical composition in the reconstruction area are measured and compared with the soil of a conventional direct foreign soil backfilling scheme.
And (3) detection results: the total nitrogen and cation exchange capacity of soil organic matters in the method are improved by more than 5.2 percent, which shows that the method improves the nutrient storage capacity of the soil; the alkaline hydrolysis nitrogen, the quick-acting phosphorus and the quick-acting potassium are improved by more than 5.7 percent, which shows that the method improves the nutrient supply of the soil; the volume weight of the soil is reduced by 8.9%, the air porosity of the soil is improved by 11.4%, and the proportion of the granular structure of the soil is improved by 13.7%. The method effectively accelerates the curing speed of the backfilled foreign soil.
The above-mentioned embodiments only express the specific embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for those skilled in the art, without departing from the technical idea of the present application, several changes and modifications can be made, which are all within the protection scope of the present application.
Claims (7)
1. A rapid curing method for backfilled greening extra soil of an urban relocation land is characterized in that a soil curing conditioner is added into the extra soil before the extra soil is backfilled and is uniformly mixed, and the raw material components of the soil curing conditioner comprise a biological organic fertilizer, zeolite, a compound microbial inoculum and a formula fertilizer.
2. The method for quickly curing backfilled greening alien soil of an urban relocation land according to claim 1, wherein the soil curing conditioner comprises the following raw material components in percentage by weight: 15-50% of bio-organic fertilizer, 20-55% of zeolite, 10-20% of composite microbial inoculum and more than or equal to 5% of formulated fertilizer.
3. The method for rapidly curing backfilled greening foreign soil of urban relocation land according to claim 1 or 2, wherein the organic fertilizer is made of biomass materialThe material is prepared by high-temperature composting fermentation, wherein the content of organic matters is more than 45 percent, the pH is 5.5-8.5, and the pH is (N + P)2O5+K2O)≥5％。
4. The method for rapidly curing backfilled greening alien soil of an urban relocation zone according to claim 1 or 2, wherein the components of the complex microbial inoculum include proteolytic enzyme, azotobacter, cellulolytic bacteria and antibiotic producing bacteria.
5. The method for rapidly curing the backfilled greening foreign soil of the urban relocation land as claimed in claim 1 or 2, wherein the formulated fertilizer is measured for the content of soil nutrients in the actual relocation land and is used for supplementing the demand of quick-acting nutrients after the plants are transplanted.
6. The method for rapidly curing backfilled greening alien soil for urban relocation lands according to claim 1 or 2, wherein the soil curing conditioner is used in an amount of 500-1000 kg/mu in use.
7. The method for backfilling the backfilling greening foreign soil of the urban relocation land is characterized in that the backfilling foreign soil is cured to prepare backfilling square soil, fiber materials are added into the backfilling square soil, and then the backfilling square soil is filled above an original soil layer.
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| CN112292956A (en) * | 2020-10-29 | 2021-02-02 | 大竹县万康生态农业有限公司 | Soil improvement method |
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