CN103141176A - Method for improving saline soil in excavated grooves of border trees in coastal region - Google Patents

Method for improving saline soil in excavated grooves of border trees in coastal region Download PDF

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Publication number
CN103141176A
CN103141176A CN2013100954782A CN201310095478A CN103141176A CN 103141176 A CN103141176 A CN 103141176A CN 2013100954782 A CN2013100954782 A CN 2013100954782A CN 201310095478 A CN201310095478 A CN 201310095478A CN 103141176 A CN103141176 A CN 103141176A
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soil
soil body
grooving
street tree
improvement
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CN2013100954782A
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CN103141176B (en
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杨永利
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Tianjin Teda Green Technology Group Co ltd
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TIANJIN TAIDA GARDEN CONSTRUCTION CO Ltd
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Abstract

The invention relates to a method for improving saline soil in excavated groves of border trees in a coastal region. The method comprises the following steps: 1, draining salt underground; 2, excavating the original soil in excavated groves of the border trees, airing the excavated soil aside, watering the excavated soil thoroughly, making a soil body in a freeze thawing state, repeatedly naturally freezing and thawing the soil body in winter, thawing the soil body in spring, mixing industrial wastes in the soil body, blending uniformly, and directly backfilling the blended soil serving as backfill into ditches excavated for the border trees; 3, starting border irrigation with a great amount of water, soaking the soil body, draining saline water through a concealed pipe salt drainage system, and stop salt-leaching when soil salinity in 1-meter soil body is detected to be below 0.5 averagely; 4, mixing organic wastes in surface soil in the depth of 30cm, and performing rotary tillage to mix uniformly; and 5, selecting saline-alkali tolerant plants, namely trees and shrubs and leguminous plants for improving soil, arranging three-dimensionally, and finishing according to a garden plantation standard. By various means such as engineering and physical improvement and biological treatment, the comprehensive effectiveness is obvious.

Description

A kind of method of coastal region improvement street tree grooving solonchak
Technical field
The present invention relates to a kind of soil melioration technology, particularly a kind of method of coastal region improvement street tree grooving solonchak.
Background technology
Along with deepening continuously of economic development, ecological problem becomes increasingly conspicuous, soil salination problem particularly, and the soil salinization problem of coastal region is more outstanding.Coastal saline-alkali soil has that salinity is high, nutrient is low, proportion and unit weight is large, porosity and the shortcoming such as osmotic coefficient is little, has greatly restricted ecological construction and the agricultural production of coastal region. and explore utilization how fast to have deposited strand primary saline soil (comprising out heavily salted soil of salt pan or the hydraulic reclamation) improvement of getting off be to demand at present the problem studied urgently for planting technique soil.
The soil melioration technology of marine solonchak mainly adopts hidden pipe salt discharge, the soil moved in to improve the original planting technology that technology is relatively ripe, easy to implement and promote at present, the soil moved in to improve the original planting technology is larger to the farmland destructiveness in the zone of fetching earth, even destroy local ecotope, and long-term, a large amount of planting soil transportation, cause road traffic to strengthen, easily cause congestion in road, heavy goods vehicles has had a strong impact on again the service life of road, the tail gas of discharging is contaminated environment again, flow to energy flow from goods and materials and all caused great waste, also had a strong impact on the quality of environment.
Summary of the invention
The objective of the invention is the factor for the greening of restriction beach saline land solonchak, be that hypsography low-lying, subterranean water level are high, soil is sticking heavily, structure is poor, soil salt content is high, soil depletion, harden, a kind of method of coastal region improvement street tree grooving solonchak is provided, reaches and do not change the target that the soil moved in to improve the original direct green changes into merit.
The technical solution used in the present invention is:
The invention provides a kind of method of coastal region improvement street tree grooving solonchak, comprise the steps:
1), underground salt discharge;
2), improve the soil physics structure: the original grooving soil of street tree is dug out, airing aside, water permeable, the soil body is in the freeze thawing state, repeatedly after natural freeze thawing, after waiting for digestion in spring, mix trade waste through a winter in the soil body, after mixing evenly, directly be backfilling in the ditch that street tree digs as backfill soil;
3), the flood desalinization of soil by flooding or leaching: begun the border irrigation flood, after soaking the soil body, discharged salt water by the hidden pipe desalting system, detected the interior soil salt content of 1 meter soil body and on average reach below 0.5, namely stopped the desalinization of soil by flooding or leaching;
4), increase fertility, improvement soil: 30cm soil mixes organic waste on the top layer, and rotary tillage is puddled evenly.
5), plants configuration and planting: select the leguminous plant of saline alkali tolerant plant shrub and improvement soil, stereoscopic configurations guarantees that as early as possible ground covers; Complete by the gardens standard of planting.
Particularly, the method for this coastal region improvement street tree grooving solonchak comprises the steps:
1), underground salt discharge: at the underground structure hidden pipe desalting system of coastal region solonchak;
2), improve the soil physics structure: the original grooving soil of street tree is dug out, airing aside, water permeable, the soil body is in the freeze thawing state, repeatedly after natural freeze thawing, after waiting for digestion in spring, mix the trade waste of soil body volume 10~15% through a winter in the soil body, after mixing evenly, directly be backfilling in the ditch that street tree digs as backfill soil;
3), the flood desalinization of soil by flooding or leaching: begun the border irrigation flood, pressed 0.5~1.0 times of water consumption of soil body volume, slowly poured into the soil body, soak the soil body after at least 24 hours, discharge salt water by the hidden pipe desalting system, detect the interior soil salt content of 1 meter soil body and on average reach below 0.5, can stop the desalinization of soil by flooding or leaching; Later in conjunction with the further desalination of plant setting pouring;
4), increase fertility, improvement soil: 30cm soil mixes organic waste on the top layer, and incorporation is 2-3 ㎏/㎡, and rotary tillage is puddled evenly;
5), plants configuration and planting: select the leguminous plant of saline alkali tolerant plant shrub and improvement soil, stereoscopic configurations guarantees that as early as possible ground covers; Complete by the gardens standard of planting.
Preferably, the trade waste described step 2) is one or more the mixture in flyash, filter residue, alkaline residue, ardealite.
Preferably, described step 4), organic waste is one or more the mixture in rice husk, crushing straw, the dregs of a decoction, chaff slag or vinasse.
Preferably, described leguminous plant is clover, Bai Sanye, crowtoe, sainfoin, shrub lespedeza, one or more in sweet clover.
Step 1) the hidden pipe desalting system that relates in is the conventional known technology of this area, and application number is 99123842.7, and denomination of invention goes in the present invention for " shallow diving coastal region hidden pipe salt discharge technology ".
preferably, described hidden pipe desalting system adopts underground horizontal closed drainage pipeline and constructs the hidden pipe desalting system that the row's of carrying water pouring pipeline consists of, its underground horizontal closed drainage pipeline is embedded in liftoff surperficial 0.6-1.5 rice, underground horizontal closed drainage pipeline is comprised of main drainpipe and collector pipe, main salt discharging pipe and collector pipe line series adopt secondary, with orthogonal grid type or the chevron shaped laying of oblique, the vertical laying length of collector pipe is 100 meters, gradient 1-3/1000, spacing between collector pipe is 6-10 rice, construct the row's of carrying weep pipe route inspection well, sump consists of, the setting party of its inspection shaft and sump to the setting party of collector pipe to consistent, the well spacing of inspection shaft is 20-30 rice, the well spacing of sump is 80-100 rice.
The advantage that the present invention has and beneficial effect are:
1, the present invention with the engineering of hidden pipe salt discharge as the basis, utilize the natural season climatic variation, it is unfreezing, improvement soil physical arrangement, use the technical measures of trade waste (mixtures of one or more in flyash, filter residue, alkaline residue, ardealite) and organic waste (mixtures of one or more in rice husk, crushing straw, the dregs of a decoction, chaff slag or vinasse), the orderly synthetic job of plantation leguminous plant is used.Improvement saline-alkali soil effect is remarkable, have at short notice (season of growth in) and effectively reduce the salinity of high salinity soil, prevent secondary alkalization, increased soil fertility, set up microbiologic population, beneficial microbe has been alleviated in former saline soil environment and saline and alkaline plant stress has been endangered, accelerated the soil-ripening degree, promote original soil greening progress, guaranteed that plant survival rate then reaches more than 95%, saved simultaneously water resource.
2, the present invention is by engineering, physically improved and biological treating many kinds of measures, the road of walking to utilize natural conditions and adopting discarded object, comprehensive effectiveness is remarkable as a result, replace soil moved in to improve the original to change, alleviate coastal region low-lying, the salinization of soil is filled out the pressure of the soil anxiety of pad soil moved in to improve the original, as large scale application, and the economic benefit highly significant.
3, in the primary saline soil improved, process, do not re-use soil moved in to improve the original, avoided damaging farmland, effective subduction transportation etc. to the impact of environment; And the use of the agricultural wastes such as stalk, eliminated its pollution to environment, thus had with useless make green, the dual ecological significance that changing waste into resources utilizes.
4, the present invention goes for all beach saline land street trees and plants, the heavily salted soil that can't process for existing other processing methods simultaneously also has good disposal ability, be namely 1.38%~3.5% for 1 meter soil body saliferous, the physics clay is the heavy cement marine solonchak more than 40%, and even being up to 7% marine solonchak for salt content can improve it successfully.
Embodiment
The invention will be further described below in conjunction with specific embodiment, but do not limit protection scope of the present invention.
Embodiment 1
Both sides, lily road, the sixth-largest street of Tianjin Development Zone, area is about 700m 2, passenger soil, do not utilize the grooving land reform good, the Chinese wax of having planted, and the ground clover of planting, survival rate 98% then.
A kind of method of coastal region improvement street tree grooving solonchak comprises the steps:
1) mud shape soil is spread out with excavator, carried out airing.underground engineering is mainly carried out grooving, lay salt discharge blind pipe and paving trickle layer, concrete operations are: dig deeply down to 1.5m according to orthogonal grid type in secondary progression laying pattern, pad is put and is drenched layer in digging the dell road, drenching the main salt discharging pipe of laying and collector pipe on layer, the vertical laying length of collector pipe is 100 meters, gradient 1/1000, spacing between collector pipe is 10 meters, the tube head end of each collector pipe and main salt discharging pipe UNICOM, re-lay pouring layer 0.3m thick on the collector pipe that lays and main salt discharging pipe, along the setting party of collector pipe to beginning to construct the underground row of carrying water pouring pipeline, construct the row's of carrying weep pipe route inspection well, sump consists of, the setting party of its inspection shaft and sump to the setting party of collector pipe to consistent, the well spacing of inspection shaft is 20 meters, the well spacing of sump is 100 meters, sump is arranged on the end points place of each main salt discharging pipe and main salt discharging pipe is communicated with sump, to be communicated with municipal drainage pipe network well through the main salt discharging pipe of municipal drainage pipe network simultaneously, carry arranging device and install wind-force additional without the sump at the main salt discharging pipe place of municipal drainage pipe network, carrying through wind-force water that arranging device discharges sends into the municipal drainage pipe network by drainage pipeline and discharges in the lump.
2) improve the soil physics structure
Before arriving in the winter time, dig out being positioned at the sixth-largest street lily road both sides grooving soil, airing is watered the soil body in the both sides, road with waterwheel, reaches the soil body fully moistening, and is saturated; Rely on the nature snowfall winter, through the multigelation process, next spring, the soil body melts again, after mixing soil body volume 13% flyash, and backfill.
3) flood desalinization of soil by flooding or leaching salt discharge
After backfill, smooth landform, begun the border irrigation flood, press 0.5 times of water consumption of soil body volume, slowly pour into the soil body, soak the soil body after 24 hours, discharge salt water by the hidden pipe desalting system, through after drip washing, in 0~60cm soil body, total salt quantity is reduced to mean value 0.38% left and right by 2.3% of primary saline soil.
4) use organic waste
30cm soil mixes the dregs of a decoction on the top layer, and incorporation is 3 ㎏/㎡, and rotary tillage is puddled evenly;
5) plant
April 29 began to plant 5cm Chinese wax, the lower sowing of tree clover, after one month, clover emerges neatly, and Chinese wax also germinates, and survival rate reaches 98%.This moment, the planting soil total salt quantity was that 0.38%, pH is 7.8, and the plant growing way is normal.
The above is only preferred embodiment of the present invention, is not technical scheme of the present invention is done any pro forma restriction.Every foundation technical spirit of the present invention all still belongs in the scope of technical scheme of the present invention any simple modification, equivalent variations and modification that above embodiment does.

Claims (5)

1. the method for coastal region improvement street tree grooving solonchak, it is characterized in that: the method comprises the steps:
1), underground salt discharge;
2), improve the soil physics structure: the original grooving soil of street tree is dug out, airing aside, water permeable, the soil body is in the freeze thawing state, repeatedly after natural freeze thawing, after waiting for digestion in spring, mix trade waste through a winter in the soil body, after mixing evenly, directly be backfilling in the ditch that street tree digs as backfill soil;
3), the flood desalinization of soil by flooding or leaching: begun the border irrigation flood, after soaking the soil body, discharged salt water by the hidden pipe desalting system, detected the interior soil salt content of 1 meter soil body and on average reach below 0.5, namely stopped the desalinization of soil by flooding or leaching;
4), increase fertility, improvement soil: 30cm soil mixes organic waste on the top layer, and rotary tillage is puddled evenly;
5), plants configuration and planting: select the leguminous plant of saline alkali tolerant plant shrub and improvement soil, stereoscopic configurations guarantees that as early as possible ground covers; Complete by the gardens standard of planting.
2. a kind of coastal region according to claim 1 is improved the method for street tree grooving solonchak, and it is characterized in that: the method comprises the steps:
1), underground salt discharge: at the underground structure hidden pipe desalting system of coastal region solonchak.
2), improve the soil physics structure: the original grooving soil of street tree is dug out, airing aside, water permeable, the soil body is in the freeze thawing state, repeatedly after natural freeze thawing, after waiting for digestion in spring, mix the trade waste of soil body volume 10~15% through a winter in the soil body, after mixing evenly, directly be backfilling in the ditch that street tree digs as backfill soil.
3), the flood desalinization of soil by flooding or leaching: begun the border irrigation flood, pressed 0.5~1.0 times of water consumption of soil body volume, slowly poured into the soil body, soak the soil body after at least 24 hours, discharge salt water by the hidden pipe desalting system, detect the interior soil salt content of 1 meter soil body and on average reach below 0.5, namely stop the desalinization of soil by flooding or leaching; Later in conjunction with the further desalination of plant setting pouring.
4), increase fertility, improvement soil: 30cm soil mixes organic waste on the top layer, and incorporation is 2-3 ㎏/㎡, and rotary tillage is puddled evenly.
5), plants configuration and planting: select the leguminous plant of saline alkali tolerant plant shrub and improvement soil, stereoscopic configurations guarantees that as early as possible ground covers; Complete by the gardens standard of planting.
3. the method for a kind of coastal region improvement street tree grooving solonchak according to claim 2 is characterized in that: the trade waste described step 2) is one or more the mixture in flyash, filter residue, alkaline residue, ardealite.
4. the method for according to claim 2 or 3 described a kind of coastal regions improvement street tree grooving solonchak is characterized in that: described step 4), organic waste is one or more the mixture in rice husk, crushing straw, the dregs of a decoction, chaff slag or vinasse.
5. the described a kind of coastal region of according to claim 2-4 any one is improved the method for street tree grooving solonchak, and it is characterized in that: described leguminous plant is one or more in clover, Bai Sanye, crowtoe, sainfoin, shrub lespedeza, sweet clover.
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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103583106A (en) * 2013-11-22 2014-02-19 上海创博生态工程有限公司 Method for biologically improving saline-alkali soil
CN104396494A (en) * 2014-10-31 2015-03-11 天津泰达绿化集团有限公司 Method for greening original soil of heavy saline-alkali land
CN104885741A (en) * 2015-05-18 2015-09-09 甘肃农业大学 Method for biologically improving hardened and salinized soil through intercropping and interplanting of sainfoin and four-wing saltbush
CN104904469A (en) * 2015-05-29 2015-09-16 山东龙泽生态环境开发有限公司 Greening method for controlling salt elimination area by area in coastal saline area
CN104904365A (en) * 2015-05-30 2015-09-16 潍坊友容实业有限公司 Method for comprehensively treating saline and alkaline land through combination of irrigation and planting
CN105103699A (en) * 2015-08-28 2015-12-02 贵州开磷集团股份有限公司 Method for improving severe saline-alkali land
CN105432409A (en) * 2015-12-02 2016-03-30 天津创世生态景观建设股份有限公司 Method for improving planting patch forest of saline-alkali soil original soil
CN105706555A (en) * 2016-03-10 2016-06-29 刘海兵 Saline-alkali soil greening engineering original soil improvement structure and construction method thereof
CN106879358A (en) * 2017-04-24 2017-06-23 中国科学院东北地理与农业生态研究所 A kind of method for recovering legume in salt-soda soil
CN107046841A (en) * 2017-04-02 2017-08-18 北京军秀咨询有限公司 A kind of method of saline land greening afforestation
CN107493718A (en) * 2017-09-29 2017-12-22 北京军秀咨询有限公司 A kind of plant cover cultivation methods for the method and salt-soda soil for improveing salt-soda soil
CN107580820A (en) * 2017-09-29 2018-01-16 北京军秀咨询有限公司 A kind of soil improvement method in salt-soda soil
CN108076719A (en) * 2018-01-04 2018-05-29 中国科学院南京土壤研究所 A kind of engineering improvement on heavy salinized ground of haftplatte and ecological planting and establishing method
CN110606636A (en) * 2019-10-24 2019-12-24 许宝庆 Natural land utilization treatment method for town dewatered sludge
CN111386783A (en) * 2020-03-21 2020-07-10 温州科技职业学院 System and method for improving saline-alkali soil through functional zone aggregate
CN113475182A (en) * 2021-07-14 2021-10-08 天津渤化环境修复股份有限公司 Improvement method of sulfate type saline-alkali soil

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CN103583106A (en) * 2013-11-22 2014-02-19 上海创博生态工程有限公司 Method for biologically improving saline-alkali soil
CN104396494A (en) * 2014-10-31 2015-03-11 天津泰达绿化集团有限公司 Method for greening original soil of heavy saline-alkali land
CN104885741A (en) * 2015-05-18 2015-09-09 甘肃农业大学 Method for biologically improving hardened and salinized soil through intercropping and interplanting of sainfoin and four-wing saltbush
CN104904469A (en) * 2015-05-29 2015-09-16 山东龙泽生态环境开发有限公司 Greening method for controlling salt elimination area by area in coastal saline area
CN104904365A (en) * 2015-05-30 2015-09-16 潍坊友容实业有限公司 Method for comprehensively treating saline and alkaline land through combination of irrigation and planting
CN105103699A (en) * 2015-08-28 2015-12-02 贵州开磷集团股份有限公司 Method for improving severe saline-alkali land
CN105432409A (en) * 2015-12-02 2016-03-30 天津创世生态景观建设股份有限公司 Method for improving planting patch forest of saline-alkali soil original soil
CN105706555B (en) * 2016-03-10 2018-04-06 刘海兵 Saline land greening engineering original soil structure-improved and its construction method
CN105706555A (en) * 2016-03-10 2016-06-29 刘海兵 Saline-alkali soil greening engineering original soil improvement structure and construction method thereof
CN107046841A (en) * 2017-04-02 2017-08-18 北京军秀咨询有限公司 A kind of method of saline land greening afforestation
CN106879358A (en) * 2017-04-24 2017-06-23 中国科学院东北地理与农业生态研究所 A kind of method for recovering legume in salt-soda soil
CN107493718A (en) * 2017-09-29 2017-12-22 北京军秀咨询有限公司 A kind of plant cover cultivation methods for the method and salt-soda soil for improveing salt-soda soil
CN107580820A (en) * 2017-09-29 2018-01-16 北京军秀咨询有限公司 A kind of soil improvement method in salt-soda soil
CN108076719A (en) * 2018-01-04 2018-05-29 中国科学院南京土壤研究所 A kind of engineering improvement on heavy salinized ground of haftplatte and ecological planting and establishing method
CN108076719B (en) * 2018-01-04 2020-03-24 中国科学院南京土壤研究所 Engineering improvement and ecological planting method for sticky plate severe saline-alkali soil
CN110606636A (en) * 2019-10-24 2019-12-24 许宝庆 Natural land utilization treatment method for town dewatered sludge
CN111386783A (en) * 2020-03-21 2020-07-10 温州科技职业学院 System and method for improving saline-alkali soil through functional zone aggregate
CN111386783B (en) * 2020-03-21 2021-10-08 温州科技职业学院 System and method for improving saline-alkali soil through functional zone aggregate
CN113475182A (en) * 2021-07-14 2021-10-08 天津渤化环境修复股份有限公司 Improvement method of sulfate type saline-alkali soil

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