CN103430654B - A kind of method accelerated strand barged-in fill nature desalination speed and promote soil quality - Google Patents
A kind of method accelerated strand barged-in fill nature desalination speed and promote soil quality Download PDFInfo
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- CN103430654B CN103430654B CN201310407151.4A CN201310407151A CN103430654B CN 103430654 B CN103430654 B CN 103430654B CN 201310407151 A CN201310407151 A CN 201310407151A CN 103430654 B CN103430654 B CN 103430654B
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Abstract
The present invention relates to a kind of method accelerated strand barged-in fill nature desalination speed and promote soil quality, the method comprises the steps: the typical mima type microrelief of moulding a kind of 6% < gradient < 13%, by 12-15g/m
2amount, mixes thoroughly fluffy for alkali seed and fine sand or the fine earth that sieves, broadcasts sowing.Mima type microrelief of the present invention is moulded and is significantly promoted strand reclaimed land pionner Suaeda salsa and raw, accelerates the improvement of barged-in fill desalination and soil structure.<pb pnum="1" />
Description
Technical field
The present invention relates to a kind of method accelerated strand barged-in fill nature desalination speed and promote soil quality, specifically, be utilize a kind of mima type microrelief, and then accelerate the method that strand reclaimed land pionner Suaeda salsa life.
Background technology
Strand barged-in fill is the warp utilizing offshore dredging seabed mud out to be formed by waterpower hydraulic reclamation.Affect by briny environment, barged-in fill salt content is high, and alkalescence is strong, and particle thin (based on glutinous grain), water-holding capacity is large, and invalid pore water content is high, and quality clings.General hydraulic reclamation is within 2 years, and earth's surface is bare land state substantially, without plant life; Hydraulic reclamation 3-4, pionner Suaeda salsa starts raw, scattered growth, and because vegetation is rare, under precipitation and evaporation condition, barged-in fill salinity is only constantly reallocated between top layer and subsurface stratum; Hydraulic reclamation more than 5 years, Suaeda salsa is just able to growth in blocks, and now, under the double action of plant and precipitation, section soil starts desalination, and quality makes moderate progress.Under natural conditions, barged-in fill quality improve depend on completely pionner Suaeda salsa raw with growth, but standby time in early stage is long, can not meet existing reclaimed land city ecology construction speed.
Summary of the invention
Main purpose of the present invention is to provide one and utilizes mima type microrelief, and then accelerates the method that strand reclaimed land pionner Suaeda salsa life, and then accelerates strand barged-in fill nature desalination speed and soil quality lifting.
In order to achieve the above object, the technical solution used in the present invention is:
Accelerate a method for strand barged-in fill nature desalination speed and lifting soil quality, comprise the steps: the typical mima type microrelief of moulding a kind of 6% < gradient < 13%, by 12-15g/m
2amount, mixes thoroughly fluffy for alkali seed and fine sand or the fine earth that sieves, broadcasts sowing.
Particularly, the method comprises the steps:
1), the investigation of the land-based area hydraulic reclamation time limit to be changed confirms;
2), according to the hydraulic reclamation time limit, determine to mould mima type microrelief parameter:
3. hydraulic reclamation < 2 years, 8% < gradient < 13%, domatic horizontal range is 1.5-3.0m, adjacent two mima type microrelief slope root edge levels, and spacing is 3.0-5.0m;
4. hydraulic reclamation 2-3,6% < gradient < 10%, domatic horizontal range is 2.5-6.0m, and adjacent two mima type microrelief slope root edge levels, spacing is 4.0-7.0m.
3), by 12-15g/m
2amount, mixes thoroughly fluffy for alkali seed and fine sand or the fine earth that sieves, broadcasts sowing.
Preferably, the mode be modelled as by outside is excavated, pad is filled out in inside of described mima type microrelief, limit construction limit compacting, people is for moulding typical mima type microrelief.Further, described compacting is that compacting is trampled on Tian Dian limit, limit or spade class pats compacting.
More preferably, the seeding quantity of the fluffy seed of described alkali is 12.5g/m
2.
In the present invention, step 2) described in the mima type microrelief gradient be the ratio percentage of domatic vertical height and horizontal range;
In the present invention, step 2) described in slope root edge to be that mima type microrelief is domatic join line with ground;
In the present invention, the outside described in step (4) is excavated, pad mode (as shown in Figure 1) is filled out in inside, is with mima type microrelief ground center of radius camber line for line of demarcation, and outside is excavated, and the earthwork excavated is carried out inside and filled out pad.
The beneficial effect that the present invention has:
Mima type microrelief of the present invention is moulded and is significantly promoted strand reclaimed land pionner Suaeda salsa and raw, accelerates the improvement of barged-in fill desalination and soil structure.
Accompanying drawing explanation
Fig. 1 excavates in the outside that to be people be moulds typical mima type microrelief, pad mode is filled out in inside.
Embodiment
Below in conjunction with specific embodiment, set forth the present invention further.
The present invention is that a kind of strand hydraulic reclamation initial stage pionner Suaeda salsa that accelerates raw, accelerate the effective ways of strand barged-in fill nature desalination speed and soil quality lifting, be at the bottom of slope, mould by suitable mima type microrelief the moist environment that Suaeda salsa easily grows, promote that it lands and growth fast.Concrete improvement steps is: background check, determines the hydraulic reclamation time limit and the regional environment of land-based area to be changed; By the mode that two ends are excavated, pad is filled out in centre, people for moulding typical mima type microrelief, hydraulic reclamation < 1 year, 8% < gradient < 13%, hydraulic reclamation 2-3,6% < gradient < 10%; By 12-15g/m
2amount, mixes thoroughly fluffy for alkali seed and fine sand or the fine earth that sieves, broadcasts sowing.
It is that mima type microrelief Lower Half directly utilizes original land that pad mode is filled out in described two ends excavation, centre, excavates by outside design grade edge, and the earthwork excavated fills out pad to not excavating land, tramples or mechanical ramming.The described mima type microrelief gradient is the ratio percentage of domatic vertical height and horizontal range.
Below provide a specific embodiment to the present invention accelerate strand hydraulic reclamation initial stage pionner Suaeda salsa raw, accelerate barged-in fill nature desalination and promote soil quality to be described in further detail.
Embodiment 1
The mima type microrelief Case Experiments On A of hydraulic reclamation < 1 year and hydraulic reclamation 2-3 carries out in Tianjin Binhai tourist district and Nan Gang industrial area reclaimed land respectively, its 1m soil body salt content is respectively 33.4g/kg and 28.7g/kg, pH is respectively 8.7 and 8.6, hydraulic reclamation < 1 year test region table is without plant life, for bare land, earth's surface, hydraulic reclamation 2-3 test region has scattered a few strain Suaeda salsa distributions once in a while.In late Febuary, 2011, fill out pad mode by outside excavation, inside, respectively mould 5 place's mima type microreliefs, design parameter is as follows:
1) hydraulic reclamation < 1 year, the gradient is all within the scope of 8-13%, and domatic horizontal range is 2.2 ± 0.15m, and adjacent two mima type microrelief slope root edge level intervals are 4.0 ± 0.5m, and 3 the end of month in 2011 carry out Suaeda salsa plantation, seeding quantity 12.5g/m
2;
2) hydraulic reclamation 2-3, the gradient is all within the scope of 6-10%, and domatic horizontal range is 4.0 ± 0.18m, and adjacent two mima type microrelief slope root edge level intervals are 5.0 ± 1.0m, and 3 the end of month in 2011 carry out Suaeda salsa plantation, seeding quantity 12.5g/m
2.
Result of the test shows, the moulding of suitable mima type microrelief contributes to accelerating strand reclaimed land pionner Suaeda salsa and raw.Compared with the bare land of check plot, at the bottom of hydraulic reclamation < 1 year mima type microrelief district toe and slope, Suaeda salsa is Patch distribution, cover degree is up to 38.5%, slope waist also has scattered distribution, calculate by mima type microrelief subregion floor space, Suaeda salsa cover degree reaches 21.4%, compared with contrasting with tabula rasa, and Be very effective; At the bottom of hydraulic reclamation 2-3 mima type microrelief district's toe and slope, Suaeda salsa is dense distribution in blocks, cover degree is up to 84.2%, slope waist, top, slope place cover degree are respectively 43.6% and 3.9%, calculate by mima type microrelief subregion floor space, Suaeda salsa cover degree reaches 72.4%, contrast hydraulic reclamation 2-3 smooth land-based area, Suaeda salsa cover degree less than 10%, mima type microrelief promotion strand reclaimed land pionner Suaeda salsa quick raw in Be very effective.After results, hydraulic reclamation < 1 year mima type microrelief alkali fluffy vitellarium 1m soil body salt content reduces to 31.9g/kg, and comparatively control treatment reduces the 1.042g/cm of 4.62%, 0-60cm soil layer unit weight by control treatment
3bring up to 1.051g/cm
3; Hydraulic reclamation 2-3 mima type microrelief alkali fluffy vitellarium soil salt content is 24.9g/kg, comparatively contrasts 2-3 barged-in fill salinity and reduces the 1.059g/cm of 13.26%, 0-60cm soil layer unit weight by control treatment
3bring up to 1.108g/cm
3.Mima type microrelief is moulded and is significantly promoted strand reclaimed land pionner Suaeda salsa and raw, accelerates the improvement of barged-in fill desalination and soil structure.
Claims (4)
1. accelerate a method for strand barged-in fill nature desalination speed and lifting soil quality, it is characterized in that: the method comprises the steps:
1), the investigation of the land-based area hydraulic reclamation time limit to be changed confirms;
2), according to the hydraulic reclamation time limit, determine to mould mima type microrelief parameter:
Hydraulic reclamation <2,8%< gradient <13%, domatic horizontal range is 1.5-3.0 m, adjacent two mima type microrelief slope root edge levels, and spacing is 3.0-5.0 m;
Hydraulic reclamation 2-3,6%< gradient <10%, domatic horizontal range is 2.5-6.0 m, adjacent two mima type microrelief slope root edge levels, and spacing is 4.0-7.0 m;
3), by 12-15 g/m
2amount, mixes thoroughly fluffy for alkali seed and fine sand or the fine earth that sieves, broadcasts sowing.
2. accelerate the method for strand barged-in fill nature desalination speed and lifting soil quality according to claim 1, it is characterized in that: the mode be modelled as by outside is excavated, pad is filled out in inside of described mima type microrelief, limit construction limit compacting, people is for moulding typical mima type microrelief.
3. accelerate the method for strand barged-in fill nature desalination speed and lifting soil quality according to claim 2, it is characterized in that: described compacting is that compacting is trampled on Tian Dian limit, limit or spade class pats compacting.
4. according to any one of claim 1-3, accelerate the method for strand barged-in fill nature desalination speed and lifting soil quality, it is characterized in that: the seeding quantity of the fluffy seed of described alkali is 12.5 g/m
2.
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| CN201310407151.4A CN103430654B (en) | 2013-09-09 | 2013-09-09 | A kind of method accelerated strand barged-in fill nature desalination speed and promote soil quality |
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| CN104488394B (en) * | 2014-11-24 | 2016-09-07 | 山东胜伟园林科技有限公司 | A kind of synthesis improvement method of salinized soil |
| CN104620939B (en) * | 2015-03-06 | 2017-04-05 | 天津泰达盐碱地绿化研究中心有限公司 | A kind of water-saving irrigation method of the quick Leaching and desalinization of strand barged-in fill |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US3431675A (en) * | 1965-03-10 | 1969-03-11 | David E Moore | Reclaiming saline soils |
| DE4133211C1 (en) * | 1991-10-07 | 1993-04-15 | Allied Colloids Gmbh, 2000 Hamburg, De | |
| CN101946573B (en) * | 2010-08-17 | 2012-05-23 | 北京师范大学 | Method for ameliorating saline and alkaline land |
| CN102388730B (en) * | 2011-07-13 | 2013-06-05 | 中国科学院新疆生态与地理研究所 | Method for planting Suaeda salsa on serious saline-alkali soil by trickle irrigation in arid area |
| CN103262689B (en) * | 2013-05-27 | 2015-03-25 | 天津天一景观规划设计有限公司 | Coastal saline-alkali soil terrace type afforesting method for improvement of dredger fill |
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Effective date of registration: 20150928 Address after: 300457, No. 26, Ning Ning Road, Tianjin Development Zone Applicant after: TIANJIN TAIDA SALINE LAND GREEN RESEARCH CENTER CO., LTD. Address before: Binhai Economic and Technological Development Zone, Tianjin City, 300457 Mu Ning Road No. 26 Applicant before: Tianjin Taida Garden Construction Co.,Ltd. |