CN102870523A - Terrain processing method for improving seashore solonchak - Google Patents

Terrain processing method for improving seashore solonchak Download PDF

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Publication number
CN102870523A
CN102870523A CN2012103708022A CN201210370802A CN102870523A CN 102870523 A CN102870523 A CN 102870523A CN 2012103708022 A CN2012103708022 A CN 2012103708022A CN 201210370802 A CN201210370802 A CN 201210370802A CN 102870523 A CN102870523 A CN 102870523A
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ditch
bottom width
processing method
drain
soil
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CN102870523B (en
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郑勇平
邵春荣
范文锋
葛映川
张蕴
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Zhejiang Senhe Seed Co Ltd
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Zhejiang Senhe Seed Co Ltd
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Abstract

A terrain processing method for improving seashore solonchak belongs to the technical field of soil improvements and includes the steps of firstly, building a drainage system; secondly, building a reservoir; thirdly, flattening land; and fourthly, lifting soil to prepare the land. The terrain processing method for improving seashore solonchak has the advantages that removing salinized surface oil is not needed so that labor is economized; natural rainwater collected is reasonably utilized, no diversion irrigation is needed, investment is low, and accordingly fresh water resources are economized; underground water level is reduced indirectly by turtleback planting lots, salt reduction is accelerated, and survival rate of seedlings can be increased. Saline-alkali soil can be reformed by the terrain processing method for improving seashore solonchak, and the survival rate of each seedling can reach more than 90%.

Description

A kind of landform processing method of Reclamation of coastal saline soil
Technical field
The invention belongs to land improvement method and technology field, be specially a kind of landform processing method of Reclamation of coastal saline soil.
Background technology
Marine solonchak is formed by the seawater salt marsh, the salt of its soil and groundwater is grouped into consistent with seawater, mainly contain take sodium chloride as main solubility salt, not only the upper soll layer salification is heavy, the subsoil salt content is also very high, so vegetation is rare, unmodified can not be carried out crops and cultivated, and only has only a few salt-tolerant plant kind to survive.The Liaodong Wan of China's coastal region, Bohai Sea Gulf, Laizhou Wan, Hangzhou Wan etc., all there is large-area marine solonchak to exist, and because seawater alluvial and wash away the effect of grade, its area is in continuous expansion, and the lasting improvement utilization of marine solonchak has become the important means that promotes that the coastal region agriculture and forestry develop.
For solving marine solonchak green plant planting technique problem, for a long time, both at home and abroad its improvement is utilized and afforestation conducts extensive research, find that the processing of old place shape is a very important step of alkaline land improving by lifting the native whole surface layer chesson salt content 60%-80% that can descend then.A kind of alkali-removing modifying method far alkaline land is disclosed in the patent documentation (CN101024226A), the layout that wherein relates to row's alkali ditch, but the method does not design cistern, but diversion irrigation row alkali, required diversion often, cost is high, and the cycle is long, and this patent is not made the detailed description of quantification to improved effect.
Summary of the invention
For the above-mentioned problems in the prior art, the object of the invention is to design the technical scheme that a kind of landform of Reclamation of coastal saline soil processing method is provided, drainage system construction and landform processing mode are improved and innovate, have the advantages such as investment is little, salt reduction is effective.
The landform processing method of described a kind of Reclamation of coastal saline soil is characterized in that may further comprise the steps:
1) drainage system construction: at first carry out wholely and the drain ditch construction, be made as a standard paragraphs every 40-60m, in each standard paragraphs drainage ditch network is set, drainage ditch network will need to transform solonchak and be divided into fritter; The form of underground covered conduit is adopted in the drain ditch, and the sandstone that 5-10cm is laid in the bottom discharges flexible porous tube on the sandstone, and earth covers;
2) cistern construction: according to solonchak area and the local rainfall information that need are transformed, consider design cistern specification, according to transforming the solonchak area: the cistern area is that the ratio of 150-200:1 is built rain water reservoir; Cover degree of depth 1.3-1.8m around the cistern with antiseepage film;
3) level land: the residential quarter that smooth each piece drain ditch fences up, drainage grade is 2-4 ‰, and the earthwork is smooth on the spot, and because of gesture appearance, being beneficial to draining is primary standard;
The time of 4) lifting the whole ground of soil gets pine table soil and lifts the whole ground of soil in saturating rain drip washing after surface soil salinity significantly descends.
The landform processing method of described a kind of Reclamation of coastal saline soil is characterized in that: the drainage ditch network described in the step 1) is made of 5 grades of crisscross drain ditchs, the upper bottom width 1.3-1.7m in one-level drain ditch, lower bottom width 0.6-1.0m, ditch depth 0.8-1.2m; The upper bottom width 1.0-1.4m of Municipal secondary effluent ditch, lower bottom width 0.4-0.8m, ditch depth 0.6-1.0m; The upper bottom width 0.6-1.0m in three grades of drain ditchs, lower bottom width 0.2-0.6m, ditch depth 0.3-0.7m; The upper bottom width 0.3-0.7m in level Four drain ditch, lower bottom width 0.2-0.4m, ditch depth 0.2-0.4m; The upper bottom width 0.3m in Pyatyi drain ditch, lower bottom width 0.2m, ditch depth 0.2m.
The landform processing method of described a kind of Reclamation of coastal saline soil is characterized in that: the drainage ditch network described in the step 1) is made of 4 grades of crisscross drain ditchs, the upper bottom width 3-5m in one-level drain ditch, lower bottom width 1-3m, ditch depth 1-3m; The upper bottom width 1-3m of Municipal secondary effluent ditch, lower bottom width 0.5-1.5m, ditch depth 0.8-1.5m; The upper bottom width 0.6-1.2m in three grades of drain ditchs, lower bottom width 0.4-0.8m, ditch depth 0.4-0.8m; The upper bottom width 0.3-0.7m in level Four drain ditch, lower bottom width 0.2-0.4m, ditch depth 0.3-0.7m.
The landform processing method of above-mentioned a kind of Reclamation of coastal saline soil has the following advantages: 1) do not need to remove the salinization topsoil, save the labour; 2) collect the natural rain water resource and rationally utilize, do not need diversion irrigation, invest little, while fresh-water-saving resource; 3) the block-shaped indirect lowering of watertable of the plantation of turtleback accelerates the salt reduction effect, is conducive to improve the survival rate of nursery stock.Adopt landform processing method of the present invention to carry out alkaline land improvement, plant percent all reaches more than 90%, and salt reduction is effective, invests little.
Embodiment
The invention will be further described below in conjunction with specific embodiment.
The below describes an embodiment in detail, but it is not limited to any or the similar example of these embodiment.
1. implement the ground overview
78.5 kilometers of Southern Bank of Hangzhou Bay seashore line lengths, only about 2.0-4.0m, lowest part is 1.5m only for height above sea level; average subterranean water level is 69.9cm; cause easily subterranean water level higher and form waterlogging, thus coastal substantially take marine solonchak as main, mainly with take sodium chloride as main solubility salt.Vegetation is rare, and herbage plant mostly is greatly the salt tolerant kind in the plants such as the fluffy and composite family of grayish green alkali, grass family, Chenopodiaceae.
Implement the place and be chosen in the both sides of bridge spanning the sea south bank, owing to be subject to the erosion of seawater or the invasion and attack of storm tide, be typical beach salty soil, saline and alkaline barren beach, summer and autumn, the white salt layer accumulates in upper soll layer, and subterranean water level is higher, and the soil salt content luffing is 0.017-1.12%.Bulk density of soil 1.34g/cm 3, porosity 11.3%, salt content 0.297%, pH value 9.28, organic matter 0.37%, available N 16.2mg/kg, available P 20.5mg/kg, quick-acting K 124.0mg/kg, the soil moisture seepage is little, salt discharge is slow, and easily form the water holding layer in the soil body, the effect of the natural desalinization of soil by flooding or leaching is not remarkable, though on the south six pools large stretch of plot, cultivated crops through more than 20 years, the salt content in some plot is also more than 0.2%.
2. implementation method and content
According to field condition, be made as a standard paragraphs every 50m, in each standard paragraphs drainage ditch network is set, drainage ditch network will need to transform solonchak and be divided into fritter; The form of underground covered conduit is adopted in the drain ditch, and the sandstone that 5-10cm is laid in the bottom discharges flexible porous tube on the sandstone, and earth covers; The effect of discharging flexible porous tube is exactly permeable on the sandstone, and it is dirty to intercept earth, guarantees that the sand stone layer draining is unobstructed, is conducive to salinity and in time discharges.According to solonchak area and the local rainfall information that need are transformed, consider design cistern specification, according to transforming the solonchak area: the cistern area is that the ratio of 150-200:1 is built rain water reservoir; Cover degree of depth 1.3-1.8m around the cistern with antiseepage film.
Side each standard paragraphs in the north of the Changjiang River is established the one-level drain ditch of two North and South directions, and specification is bottom width=1.5m*1.0m*0.8m under the upper bottom width * degree of depth *, and each standard paragraphs is divided into 3 vertical residential quarters, and cell-wide is respectively 15.7m, 15.7m, 15.6m from west to east.Build cement tub between the standard paragraphs, wide 0.8-1.2m, main application is draining, the current of the inside, little ditch is focused in the cement tub of large specification to discharge; By 2 Municipal secondary effluent ditches, bottom width=1.2m*0.8m*0.6m under the upper bottom width * degree of depth * is divided into 3 horizontal residential quarters with north of the Changjiang River side, wide 20m, 30m, the 20m of being respectively from south to north; By three grades of drain ditchs, bottom width=0.8m*0.5m*0.4m under the upper bottom width * degree of depth * is divided into that north and south is wide to be the zone of 10m in each horizontal residential quarter; Again by the level Four drain ditch, bottom width=0.5m*0.3m*0.3m under the upper bottom width * degree of depth * is divided into that north and south is wide to be the zone of 5m, and the Pyatyi drain ditch is continued it is divided equally and is two plot, north and south.
Side each standard paragraphs in the south of the River is established the one-level drain ditch of two North and South directions, and specification is bottom width=4.0m*2.0m*2.0m under the upper bottom width * degree of depth *, and each standard paragraphs is divided into 3 vertical residential quarters, and cell-wide is respectively 15.3m, 15.3m, 15.4m from west to east; By 2 Municipal secondary effluent ditches, bottom width=2.0m*1.2m*1.0m under the upper bottom width * degree of depth * is divided into 3 horizontal residential quarters with south of the River side, wide 29m, 29m, the 21m of being respectively from south to north; By three grades of drain ditchs, bottom width=1.0m*0.6m*0.6m under the upper bottom width * degree of depth * is divided into that north and south is wide to be the zone of 9m in each horizontal residential quarter; Again by the level Four drain ditch, bottom width=0.5m*0.5m*0.3m under the upper bottom width * degree of depth * carries out horizontal partition and is that north and south is wide is the plot of 4.25m.
Level land, each piece planting site is turtleback, cubic metre of earth in-situ balancing, and because of gesture appearance, being beneficial to draining is primary standard.The time of lifting the whole ground of soil is preferably in by saturating rain drip washing, gets pine table soil after surface soil salinity significantly descends and lifts the whole ground of soil.
3. implementation result: through above technical finesse, can rationally utilize rainwater resource, invest little; The seeds growing state of planting is good, and survival rate reaches more than 90%; Planting-site salt reduction successful, the salt content of the comparing sedendary soil 0.25%-0.68% that descended.
In the above-described embodiments: the sandstone of 6,7,8 or the 9cm that lay the bottom, drain ditch in the step 1); Step 2) needing the solonchak area of transformation and the ratio of local rainfall information in is 160:1,170:1 or 180:1,190:1 or 200:1; The degree of depth of cistern is 1.4,1.5 or 1.6m; Drainage grade is 2.5,3 or 3.5 ‰ in the step 3); The other the same as in Example 1 also can obtain technique effect of the present invention.

Claims (8)

1. the landform processing method of a Reclamation of coastal saline soil is characterized in that may further comprise the steps:
1) drainage system construction: at first carry out wholely and the drain ditch construction, be made as a standard paragraphs every 40-60m, in each standard paragraphs drainage ditch network is set, drainage ditch network will need to transform solonchak and be divided into fritter; The form of underground covered conduit is adopted in the drain ditch, and the sandstone that 5-10cm is laid in the bottom discharges flexible porous tube on the sandstone, and earth covers;
2) cistern construction: according to solonchak area and the local rainfall information that need are transformed, consider design cistern specification, according to transforming the solonchak area: the cistern area is that the ratio of 150-200:1 is built rain water reservoir; Cover degree of depth 1.3-1.8m around the cistern with antiseepage film;
3) level land: the residential quarter that smooth each piece drain ditch fences up, drainage grade is 2-4 ‰, and the earthwork is smooth on the spot, and because of gesture appearance, being beneficial to draining is primary standard;
The time of 4) lifting the whole ground of soil gets pine table soil and lifts the whole ground of soil in saturating rain drip washing after surface soil salinity significantly descends.
2. the landform processing method of a kind of Reclamation of coastal saline soil as claimed in claim 1, it is characterized in that: the drainage ditch network described in the step 1) is made of 5 grades of crisscross drain ditchs, the upper bottom width 1.3-1.7m in one-level drain ditch, lower bottom width 0.6-1.0m, ditch depth 0.8-1.2m; The upper bottom width 1.0-1.4m of Municipal secondary effluent ditch, lower bottom width 0.4-0.8m, ditch depth 0.6-1.0m; The upper bottom width 0.6-1.0m in three grades of drain ditchs, lower bottom width 0.2-0.6m, ditch depth 0.3-0.7m; The upper bottom width 0.3-0.7m in level Four drain ditch, lower bottom width 0.2-0.4m, ditch depth 0.2-0.4m; The upper bottom width 0.3m in Pyatyi drain ditch, lower bottom width 0.2m, ditch depth 0.2m.
3. the landform processing method of a kind of Reclamation of coastal saline soil as claimed in claim 1, it is characterized in that: the drainage ditch network described in the step 1) is made of 4 grades of crisscross drain ditchs, the upper bottom width 3-5m in one-level drain ditch, lower bottom width 1-3m, ditch depth 1-3m; The upper bottom width 1-3m of Municipal secondary effluent ditch, lower bottom width 0.5-1.5m, ditch depth 0.8-1.5m; The upper bottom width 0.6-1.2m in three grades of drain ditchs, lower bottom width 0.4-0.8m, ditch depth 0.4-0.8m; The upper bottom width 0.3-0.7m in level Four drain ditch, lower bottom width 0.2-0.4m, ditch depth 0.3-0.7m.
4. the landform processing method of a kind of Reclamation of coastal saline soil as claimed in claim 1 is characterized in that: drainage ditch network will need to transform solonchak and be divided into long 15-16m, widely is the block of cells of 2.5m-5.0m.
5. the landform processing method of a kind of Reclamation of coastal saline soil as claimed in claim 1 is characterized in that: the sandstone of bottom, drain ditch laying 6-9cm in the step 1), preferred 7-8cm.
6. the landform processing method of a kind of Reclamation of coastal saline soil as claimed in claim 1 is characterized in that: step 2) the middle solonchak area of transforming: the cistern area is 160-180:1.
7. the landform processing method of a kind of Reclamation of coastal saline soil as claimed in claim 1 is characterized in that: step 2) in the degree of depth of cistern be 1.4-1.6m.
8. the landform processing method of a kind of Reclamation of coastal saline soil as claimed in claim 1, it is characterized in that: drainage grade is 2.5-3.5 ‰ in the step 3).
CN201210370802.2A 2012-09-29 2012-09-29 Terrain processing method for improving seashore solonchak Active CN102870523B (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104115586A (en) * 2014-06-13 2014-10-29 宁波高新区围海工程技术开发有限公司 Moderate and severe saline-alkali soil treatment method
CN105325225A (en) * 2014-08-08 2016-02-17 北京碧青园园林绿化工程有限公司 Method improving tree plantation survival rate in severe saline-alkali soil
CN105519274A (en) * 2015-12-07 2016-04-27 南京大学 Integration method of large-scale coastal newly reclaimed beach agricultural land ecologicalization exploitation
CN106068754A (en) * 2016-07-25 2016-11-09 河北省农林科学院滨海农业研究所 The method of flour sand Muddy Bottoms strand tidal flat revegetation
CN106605469A (en) * 2015-10-26 2017-05-03 天津港海湾园林绿化有限公司 Coastal reclamation land ecological restoration and greening method
CN109757144A (en) * 2018-05-28 2019-05-17 光大环境修复(江苏)有限公司 A kind of modification method of beach saline land
CN110249739A (en) * 2019-07-18 2019-09-20 段家贵 The soil body for improving newly-increased farmland water retention in soil builds method

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CN101336593A (en) * 2008-08-08 2009-01-07 高雅琦 Method for constructing ecology garden landscape compound structures to improve salt-affected soil
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CN102220778A (en) * 2011-04-12 2011-10-19 天津海林园艺环保科技工程有限公司 Seashore solonchak greening and water saving method
CN102422735A (en) * 2011-09-16 2012-04-25 南通华林生物科技发展有限公司 Ecological integrated improved facility and improving method for saline and alkaline land
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CN101024226A (en) * 2007-04-16 2007-08-29 张耀文 Alkali-removing modifying method far alkaline land
RU2007132141A (en) * 2007-08-24 2009-02-27 Александр Борисович Курченко (RU) INTEGRATED TECHNOLOGY FOR RECULTIVATION OF SOILS CONTAMINATED BY OIL AND OIL-CONTAINING PRODUCTS
CN101336593A (en) * 2008-08-08 2009-01-07 高雅琦 Method for constructing ecology garden landscape compound structures to improve salt-affected soil
CN102220778A (en) * 2011-04-12 2011-10-19 天津海林园艺环保科技工程有限公司 Seashore solonchak greening and water saving method
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104115586A (en) * 2014-06-13 2014-10-29 宁波高新区围海工程技术开发有限公司 Moderate and severe saline-alkali soil treatment method
CN104115586B (en) * 2014-06-13 2015-12-09 宁波高新区围海工程技术开发有限公司 Heavy salinized ground administering method in one
CN105325225A (en) * 2014-08-08 2016-02-17 北京碧青园园林绿化工程有限公司 Method improving tree plantation survival rate in severe saline-alkali soil
CN106605469A (en) * 2015-10-26 2017-05-03 天津港海湾园林绿化有限公司 Coastal reclamation land ecological restoration and greening method
CN105519274A (en) * 2015-12-07 2016-04-27 南京大学 Integration method of large-scale coastal newly reclaimed beach agricultural land ecologicalization exploitation
CN105519274B (en) * 2015-12-07 2018-11-30 南京大学 A kind of integrated approach of extensive coastal new Climacteric symptoms farmland ecology exploitation
CN106068754A (en) * 2016-07-25 2016-11-09 河北省农林科学院滨海农业研究所 The method of flour sand Muddy Bottoms strand tidal flat revegetation
CN109757144A (en) * 2018-05-28 2019-05-17 光大环境修复(江苏)有限公司 A kind of modification method of beach saline land
CN110249739A (en) * 2019-07-18 2019-09-20 段家贵 The soil body for improving newly-increased farmland water retention in soil builds method

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