CN109892057A - A kind of method of discarded salt pond soil soil improvement - Google Patents

A kind of method of discarded salt pond soil soil improvement Download PDF

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Publication number
CN109892057A
CN109892057A CN201711303888.6A CN201711303888A CN109892057A CN 109892057 A CN109892057 A CN 109892057A CN 201711303888 A CN201711303888 A CN 201711303888A CN 109892057 A CN109892057 A CN 109892057A
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China
Prior art keywords
soil
salt
pond
salt pond
discarded
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Pending
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CN201711303888.6A
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Chinese (zh)
Inventor
许晓静
齐秀静
赵立伟
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Beijing Blue North Garden (tianjin) Co Ltd
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Beijing Blue North Garden (tianjin) Co Ltd
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Priority to CN201711303888.6A priority Critical patent/CN109892057A/en
Publication of CN109892057A publication Critical patent/CN109892057A/en
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Abstract

The present invention provides a kind of methods of discarded salt pond soil soil improvement, include the following steps, in discarded salt pond and Soil Surrounding detects, divide improvement region according to soil salt content;Topsoil by salt content less than 2% is longitudinally pushed into boundary side along salt pond;The silt soil for excavating salt pond side is pushed into the salt pond boundary other side, is dried until it can carry out cal rolling;Behind the side for having excavated silt soil, upper cal rolling leveling, salt discharge french drain is excavated, backfills stone nitre, blind pipe, stone nitre and blind pipe constitute drenching layer;Drenching layer has backfilled, and is laid with non-woven fabrics, after building salt discharge well, is laid with longitudinal geotextiles and fixation;The side of salt discharge engineering will be not yet done, excavates silt soil, sunning, fluting does salt discharge, backfill drenching layer to design height after upper cal rolling leveling;It is laid with non-woven fabrics;The salt pond mud dug out twice is mixed in strange land respectively.The present invention reduces the earthwork transportation engineering during the regulation of salt pond and efficiently it is utilized mud.

Description

A kind of method of discarded salt pond soil soil improvement
Technical field
The invention belongs to saline-alkali soil salt discharge technical fields, are suitable for coastal region more particularly, to one kind and discard salt pond land reform Good method.
Background technique
The development & construction of coastal area need a fine ecological garden environment and could preferably develop the economy, but edge Haiti area soil salinization increases several difficulty to Urban Landscape Construction.Previous development & construction are all on the basis of soil moved in improve the original greening Upper progress, this undoubtedly increases the contradiction between land resource supply and social development demand.It rationally utilizes, effective exploitation salination Soil is the important topic of coastal region greening.
Summary of the invention
In view of this, the present invention is directed to propose a kind of salt discharge knot for excavating silt soil improvement suitable for coastal region salt pond Structure is rationally utilized, effective exploitation salinization soil with overcome the deficiencies in the prior art.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of method of discarded salt pond soil soil improvement, includes the following steps,
1) in discarded salt pond and Soil Surrounding detects, improvement region is divided according to soil salt content;
2) topsoil by salt content less than 2% is longitudinally pushed into boundary side along salt pond;General surface layer is by many years Weathering, salt content are more slightly lower.Saliferous is low on improvement upper layer, and high salinity is placed on lower layer, and earth volume considers to put in the case where allowing Under drenching layer.
3) silt soil for excavating salt pond side, is pushed into the salt pond boundary other side, and sunning can extremely carry out cal rolling and be Only;
4) behind the side for having excavated silt soil, upper cal rolling leveling, salt discharge french drain is excavated, stone nitre, blind pipe are backfilled, Stone nitre and blind pipe constitute drenching layer;
5) drenching layer has backfilled, and is laid with non-woven fabrics, after building salt discharge well, is laid with longitudinal geotextiles and fixation;Salt discharge well is to receive Collect the leacheate being discharged from salt discharge ditch.
6) side of salt discharge engineering will not yet to be done, silt soil is excavated, sunning, fluting does salt discharge after upper cal rolling leveling, Drenching layer is backfilled to design height;It is laid with non-woven fabrics;
7) the salt pond mud dug out twice is mixed in strange land respectively, is backfilled to design height after mixing uniformly.
The application is using improvement in situ, after excavating salt pond, bed mud is placed vacant lot sunning, the purpose for releasing side is exactly In order to do salt discharge engineering.Salt pond is divided into two parts, carries out salt discharge processing respectively, can be adjusted for aerial plant planting range The position of underground soil amelioration depth and salt discharging pipe.
Preferably, in institute's step 1), three kinds of situations are divided into according to soil salt content, soil salt content is less than 1.5%;Soil Earth salt content is 1.5%~3%;Soil salt content is greater than 3%;
According to three kinds of different situations, in step 7), adds different conditioners and mixed;
When soil salt content is less than 1.5%, conditioner includes stalk or garden waste, mountain skin sand, organic fertilizer body, wherein Each component accounts for the volume ratio of the entire soil body are as follows: 8~12%, 8~12%, 4~6%;Preferably, 10%, 10%, 5%;
Soil salt content 1.5%~3%, conditioner include stalk or garden waste, mountain skin sand, organic fertilizer body, wherein Each component accounts for the volume ratio of the entire soil body are as follows: 13~17%, 8~12%, 5~7%;Preferably, 15%: 10%: 6%;
Soil salt content is greater than 3%, and conditioner includes stalk or garden waste, mountain skin sand, organic fertilizer body, wherein each group Divide the volume ratio for accounting for the entire soil body are as follows: 23~27%, 18~22%, 6~10%;Preferably, 25%: 20%: 8%.
Preferably, further include step 8), on the ground flattened, apply improving fertilizer, carry out rotary tillage and mix;
And step 9), several small furrow are got, are poured.
Preferably, in step 1), taking native depth is 60~100cm.The salt content of soil is taken out in detection, this detection saliferous The depth of amount is also depending on the plant of design.
Preferably, in step 4) and step 6), the salt discharging pipe buried depth of marine solonchak is 1.3 meters, 8 meters of spacing;Sea silt soil 1.5 meters of barged-in fill salt discharging pipe buried depth, 2-3 meters of spacing;The specification for backfilling stone nitre is 1-3, partial size 16-31.5mm;Blind pipe ditch is 30cm*30cm, blind pipe are pe double-wall corrugated pipe, and drenching layer height is 30cm.
Preferably, non-woven fabrics is laid in the step 5) and step 6) in drenching layer, the specification of non-woven fabrics is 60-100g/ m2
Preferably, the improving fertilizer is the acid improving fertilizer containing acive calcium ion;Improving fertilizer with a thickness of rotary tillage depth 18~22%;Preferably, 20%.
Preferably, several small furrow are got in step 9), are poured, and small furrow length is 8~12m;Width be 0.8~ 1.2m is poured using intermittence, and water and soil ratio is 1.2: 1~0.9: 1;Preferably, small furrow length is 10m;Width is 1m.
Compared with the existing technology, the method for the present invention for excavating silt soil improvement suitable for coastal region salt pond, tool There is following advantage:
The method of improvement of the present invention, the improvement and utilization of the salt pond mud suitable for soil salinization region. Reduce the earthwork transportation engineering during salt pond is renovated and mud is efficiently utilized.This method provides the novel soil of one kind and changes Good method, vegetation root system characteristic determines soil improvement depth on this method base area, accelerates the period of soil improvement, so not But engineering cost is reduced, and reduces late maintaining cost.
Detailed description of the invention
Fig. 1 is the cross-sectional view in the salt pond of improvement.
1, soil after improveing;2, drenching layer;3, blind pipe;4, original soil.
Specific embodiment
In addition to being defined, technical term used in following embodiment has universal with those skilled in the art of the invention The identical meanings of understanding.Test reagent used in following embodiment is unless otherwise specified conventional biochemical reagent;It is described Experimental method is unless otherwise specified conventional method.
Below with reference to embodiment, the present invention will be described in detail.
First according to Soil K+adsorption as a result, by the low soil heap of surface layer salt content to item boundaries side, expose slot bottom into Muck soil in salt pond (higher through detection soil salt content) is excavated in row sunning simultaneously, and being down to by sunning soil moisture content can be with It is mixed.The width of salt discharge ditch is designed according to soil salt content, completes salt discharge engineering under plantation arbor and undershrub, with This can mix modifying agent into the low soil of salt content simultaneously, complete backfill conditioned soil to salt discharge engineering.Design height is backfilled to, Side is laid with geotextiles.After excavation after Muddy Bottoms soil backfill 50cm, desalting system is done in cal rolling leveling, different at the same time Ground mixes modifying agent into the high soil of saliferous, after be backfilled to design height after the completion of salt discharge.Whole backfill finishes, and ridges, pours Water desalination.
A kind of method of discarded salt pond soil soil improvement, includes the following steps,
1) in discarded salt pond and Soil Surrounding detects, improvement region is divided according to soil salt content;
2) topsoil by salt content less than 2% is longitudinally pushed into boundary side along salt pond;General surface layer is by many years Weathering, salt content are more slightly lower.
3) silt soil for excavating salt pond side, is pushed into the salt pond boundary other side, and sunning can extremely carry out cal rolling and be Only;
4) behind the side for having excavated silt soil, upper cal rolling leveling, salt discharge french drain is excavated, stone nitre, blind pipe are backfilled, Stone nitre and blind pipe constitute drenching layer;
5) drenching layer has backfilled, and is laid with non-woven fabrics, after building salt discharge well, is laid with longitudinal geotextiles and fixation;Salt discharge well is to receive Collect the leacheate being discharged from salt discharge ditch.
6) side of salt discharge engineering will not yet to be done, silt soil is excavated, sunning, fluting does salt discharge after upper cal rolling leveling, Drenching layer is backfilled to design height;It is laid with non-woven fabrics;
7) the salt pond mud dug out twice is mixed in strange land respectively, is backfilled to design height after mixing uniformly.
The application is using improvement in situ, after excavating salt pond, bed mud is placed vacant lot sunning, the purpose for releasing side is exactly In order to do salt discharge engineering.Salt pond is divided into two parts, carries out salt discharge processing respectively, can be adjusted for aerial plant planting range The position of underground soil amelioration depth and salt discharging pipe.
In institute's step 1), three kinds of situations are divided into according to soil salt content, soil salt content is less than 1.5%;Soil saliferous Amount is 1.5%~3%;Soil salt content is greater than 3%;
According to three kinds of different situations, in step 7), adds different conditioners and mixed;
When soil salt content is less than 1.5%, conditioner includes stalk or garden waste, mountain skin sand, organic fertilizer body, wherein The volume ratio that each component accounts for the entire soil body is 10%, 10%, 5%;
Soil salt content 1.5%~3%, conditioner include stalk or garden waste, mountain skin sand, organic fertilizer body, wherein The volume ratio that each component accounts for the entire soil body is 15%: 10%: 6%;
Soil salt content is greater than 3%, and conditioner includes stalk or garden waste, mountain skin sand, organic fertilizer body, wherein each group Divide the volume ratio for accounting for the entire soil body are as follows: 25%: 20%: 8%.
Further include step 8), on the ground flattened, apply improving fertilizer, carries out rotary tillage and mix;And step 9), it gets Several small furrow, are poured.
In step 1), taking native depth is 90cm.The salt content of soil is taken out in detection, and the depth of this detection salt content is also Depending on the plant of design.
In step 4) and step 6), the salt discharging pipe buried depth of marine solonchak is 1.3 meters, 8 meters of spacing;Sea silt soil barged-in fill row 1.5 meters of salt pipe buried depth, 2-3 meters of spacing;Backfill stone nitre is 1.3 sizes;Blind pipe ditch is 30cm*30cm, and blind pipe is that pe is double-wall corrugated Pipe, drenching layer height are 30cm.
Non-woven fabrics is laid in the step 5) and step 6) in drenching layer, the specification of non-woven fabrics is 100g/m2
The improving fertilizer is the acid improving fertilizer containing acive calcium ion;Improving fertilizer with a thickness of the 20% of rotary tillage depth.
Several small furrow are got in step 9), are poured, and small furrow length is 10m;Width are as follows: 1m is poured using intermittence, Water and soil ratio is 1: 1;Preferably, small furrow length is 10m;Width is 1m.
High megaphanerophyte selection improvement depth 80cm, shrub and draft improve depth 50cm.
The plantation of plant is carried out on soil after improvement, plant survival rate reaches 90%.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.

Claims (8)

1. a kind of method of discarded salt pond soil soil improvement, it is characterised in that: include the following steps,
1) in discarded salt pond and Soil Surrounding detects, improvement region is divided according to soil salt content;
2) topsoil by salt content less than 2% is longitudinally pushed into boundary side along salt pond;;
3) silt soil for excavating salt pond side, is pushed into the salt pond boundary other side, is dried until it can carry out cal rolling;
4) behind the side for having excavated silt soil, upper cal rolling leveling, salt discharge french drain is excavated, stone nitre, blind pipe, stone nitre are backfilled And blind pipe constitutes drenching layer;
5) drenching layer has backfilled, and is laid with non-woven fabrics, after building salt discharge well, is laid with longitudinal geotextiles and fixation;
6) side of salt discharge engineering will be not yet done, silt soil is excavated, sunning, fluting does salt discharge after upper cal rolling leveling, backfills Drenching layer is to design height;It is laid with non-woven fabrics;
7) the salt pond mud dug out twice is mixed in strange land respectively, is backfilled to design height after mixing uniformly.
2. the method for discarded salt pond soil soil improvement according to claim 1, it is characterised in that: in institute's step 1), according to Soil salt content is divided into three kinds of situations, and soil salt content is less than 1.5%;Soil salt content is 1.5%~3%;Soil saliferous Amount is greater than 3%;
According to three kinds of different situations, in step 7), adds different conditioners and mixed;
When soil salt content is less than 1.5%, conditioner includes stalk or garden waste, mountain skin sand, organic fertilizer body, wherein each group Divide the volume ratio for accounting for the entire soil body are as follows: 8~12%, 8~12%, 4~6%;Preferably, 10%, 10%, 5%;
Soil salt content 1.5%~3%, conditioner include stalk or garden waste, mountain skin sand, organic fertilizer body, wherein each group Divide the volume ratio for accounting for the entire soil body are as follows: 13~17%, 8~12%, 5~7%;Preferably, 15%: 10%: 6%;
Soil salt content is greater than 3%, and conditioner includes stalk or garden waste, and mountain skin sand, organic fertilizer body, wherein each component accounts for The volume ratio of the entire soil body are as follows: 23~27%, 18~22%, 6~10%;Preferably, 25%: 20%: 8%.
3. the method for discarded salt pond soil soil improvement according to claim 1, it is characterised in that: it further include step 8), On the ground flattened, improving fertilizer is applied, rotary tillage is carried out and mixes;
And step 9), several small furrow are got, are poured.
4. the method for discarded salt pond soil soil improvement according to claim 1, it is characterised in that: in step 1), take native deep Degree is 60~100cm, and the salt content of soil is taken out in detection.
5. the method for discarded salt pond soil soil improvement according to claim 1, it is characterised in that: step 4) and step 6) In, the salt discharging pipe buried depth of marine solonchak is 1.3 meters, 8 meters of spacing;1.5 meters of buried depth of sea silt soil barged-in fill salt discharging pipe, 2-3 meters of spacing; Backfill stone nitre specification is 1-3;Blind pipe ditch is 30cm*30cm, and blind pipe is pe double-wall corrugated pipe, and drenching layer height is 30cm.
6. the method for discarded salt pond soil soil improvement according to claim 1: drenching layer in the step 5) and step 6) Upper laying non-woven fabrics, the specification of non-woven fabrics are 60-100g/m2
7. the method for discarded salt pond soil soil improvement according to claim 3, it is characterised in that: the improving fertilizer be containing The acid improving fertilizer of acive calcium ion;Improving fertilizer with a thickness of the 18~22% of rotary tillage depth;Preferably, 20%.
8. the method for discarded salt pond soil soil improvement according to claim 3, it is characterised in that: got in step 9) several Small furrow, are poured, and small furrow length is 8~12m;Width is 0.8~1.2m, is poured using intermittence, water and soil ratio is 1.2: 1 ~0.9: 1;Preferably, small furrow length is 10m;Width is 1m.
CN201711303888.6A 2017-12-11 2017-12-11 A kind of method of discarded salt pond soil soil improvement Pending CN109892057A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU471076A1 (en) * 1973-06-21 1975-05-25 Среднеазиатский Ордена Трудового Красного Знамени Научно-Исследовательский Институт Механизации И Электрификации Сельского Хозяйства Ridge method of cotton cultivation
CN103181258A (en) * 2013-03-29 2013-07-03 江苏大丰盐土大地农业科技有限公司 Saline-alkali soil improvement method
CN104094693A (en) * 2014-06-24 2014-10-15 天津泰达绿化集团有限公司 Greening method for controlling and discharging salt stepwise in coastal saline area
CN104412751A (en) * 2013-08-24 2015-03-18 山水园林股份有限公司 Improvement method for viscous seashore saline soil of saline-alkali wasteland
CN104412748A (en) * 2013-08-24 2015-03-18 山水园林股份有限公司 Technological method for eliminating salts in blind drain in saline-alkali soil

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU471076A1 (en) * 1973-06-21 1975-05-25 Среднеазиатский Ордена Трудового Красного Знамени Научно-Исследовательский Институт Механизации И Электрификации Сельского Хозяйства Ridge method of cotton cultivation
CN103181258A (en) * 2013-03-29 2013-07-03 江苏大丰盐土大地农业科技有限公司 Saline-alkali soil improvement method
CN104412751A (en) * 2013-08-24 2015-03-18 山水园林股份有限公司 Improvement method for viscous seashore saline soil of saline-alkali wasteland
CN104412748A (en) * 2013-08-24 2015-03-18 山水园林股份有限公司 Technological method for eliminating salts in blind drain in saline-alkali soil
CN104094693A (en) * 2014-06-24 2014-10-15 天津泰达绿化集团有限公司 Greening method for controlling and discharging salt stepwise in coastal saline area

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