CN105474823A - Drainage salt-washing method for green belt of heavy saline-alkali land development region in coastal area - Google Patents
Drainage salt-washing method for green belt of heavy saline-alkali land development region in coastal area Download PDFInfo
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- CN105474823A CN105474823A CN201410475828.2A CN201410475828A CN105474823A CN 105474823 A CN105474823 A CN 105474823A CN 201410475828 A CN201410475828 A CN 201410475828A CN 105474823 A CN105474823 A CN 105474823A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
Abstract
The invention provides a drainage salt-washing method for a green belt of a heavy saline-alkali land development region in a coastal area. The method can effectively reduce engineering cost, greatly shortens engineering time, and can realize effective desalination of saline-alkali soil of the green belt. The method comprises the following steps: (1) laying 200 kilograms to 300 kilograms of straws on the soil surface of the heavy saline-alkali land per mu, then subjecting the soil of the heavy saline-alkali land to soil-turning operation, and allowing the straws to be uniformly doped in the soil, wherein a soil-turning depth is 50 cm to 80 cm; (2) embedding alkali-discharge pipes in a tilted dike located at the bottom part of the heavy saline-alkali land, arranging a drainage ditch at one side of the heavy saline-alkali land, and allowing one downward-tilted end of each alkali-discharge pipe to communicate with the drainage ditch, wherein the depth of each alkali-discharge pipe embedded in the dike is 1 m to 1.2 m, and the separation distance of adjacent alkali-discharge pipes is 5 m; and (3) implementing irrigation to the heavy saline-alkali land with underground brackish water as a water source.
Description
Technical field
The present invention relates to the improvement method of heavy saline, particularly relate to a kind of Drainage of salt method of greenbelt of heavy saline development zone of coastal region.
Background technology
In China, about have the saline land of 100,000,000 hectares, suitable with the cultivated area of crops, wherein part saline land by Development control area district, Planting Crops, store the pond various ways such as to breed fish and develop, but still have the saline land of 80% not yet to be utilized.At present, the technology in domestic improvement saline land mainly contains the following aspects:
engineering measure: Drainage of salt, soil moved in improve the original pressure alkali, pressure sand control salt explosion salting stain,
agricultural measures: level land, deep plough and plough deeply, build raised fields, green manuring, bury and put stalk,
forestry Measures: plant alkaline-resisting plant,
chemistry measure: reduce surface soil alkalinity by chemical improvement agents such as gypsum, ardealite, dephosphorization gypsum, and ash, flyash, peat etc. are reduced surface soil alkalinity as soil conditioner.Drainage of salt is one of the important measures in improvement saline land, the improvement of the greenbelt in heavy saline development zone is fully utilized, the rule of Main Basis " salt comes with water, salt goes with water ", by filling with forced-ventilated by force, extract fresh water, irrigate saline land, salinity in soil is fully dissolved, and discharges through irrigation canals and ditches or pipeline.Such conventional method, on the one hand, use fresh water desalinization of soil by flooding or leaching cost higher, and freshwater resources is comparatively in short supply; On the other hand, coastal area heavy saline silt content is higher, and the hardening soil is serious, and after every 2 ~ 3 flushings, need again dig, engineering is large, and expend time in length.
Summary of the invention
For the problems referred to above, the invention provides a kind of Drainage of salt method of greenbelt of heavy saline development zone of coastal region, it effectively can reduce engineering cost, significantly shortens engineering consuming time, and can realize effective desalination of greenbelt saline-alkali soil.
Its technical scheme is such, comprises the following steps:
(1) soil surface of every mu of heavy saline lays 200 kilograms ~ 300 kilograms stalks, carries out earth moving operations to the soil of heavy saline, and stalk is mixed uniformly in soil, and depth of turning soil is 50cm ~ 80cm;
(2) bury Pipe for draining alkali underground at heavy saline bottom angled dike, arrange drain ditch in heavy saline side, drain ditch described in one end UNICOM that described Pipe for draining alkali is downward-sloping, described Pipe for draining alkali dike buried depth degree is 1m ~ 1.2m, and the spacing of adjacent described Pipe for draining alkali is 5m;
(3) implement to irrigate using underground brackish water as water source to heavy saline.
Further, in step (), every mu of described heavy saline spreads fertilizer over the fields the essence of loosening the soil having 50g ~ 80g.
Further, in step (two), heavy saline side is also provided with cistern, is provided with suction pump and water-delivery pump in described cistern, and underground brackish water extracts and is stored in described cistern by described suction pump.
Further, buried by the yellow sand of 10cm thickness or stalk dike above described Pipe for draining alkali.
Further, in step (three), implement to throw in the underground brackish water of irrigating to loosen the soil essence, described in the essence every mu of consumption that loosens the soil be 50g ~ 80g.
Further, in step (three), implement to throw in the underground brackish water of irrigating have sodium carbonate, described sodium carbonate amount is 1.5g/L ~ 2.5g/L.
After adopting the present invention, its beneficial effect is:
1, mix the heavy saline soil having stalk, soil property is softer, accelerate the seepage velocity of water thus the speed of raising Drainage of salt, when heavy saline soil does not mix stalk after every 1 ~ 2 desalinization of soil by flooding or leaching, coagulating soil, soil capillary significantly reduces, the seepage velocity of water significantly reduces, need again dig, quantities is large, length consuming time, and mix the heavy saline soil having stalk, after every 7 ~ 8 desalinization of soil by flooding or leaching, just need again dig, effectively can reduce number of times of digging, reduce engineering cost, significantly shorten engineering consuming time, in addition, heavy saline soil local can be effectively avoided to harden, local draining desalinization of soil by flooding or leaching weak effect, the problem of the too high vegetation death caused of salinity, the setting of the stalk of every mu 200 kilograms ~ 300 kilograms, more can play the effect of counterweight alkaline land soil improvement, improves soil organic matter content,
2, brackish water seepage velocity is fast, can not only significantly calculate casual labourer's journey consuming time, more can reach the desalting effect close with fresh water, sodium carbonate is thrown in the underground water extracted, the salinity of water can be improved, avoid because of extract fresh water cause seepage velocity excessively slow, the problems such as engineering length consuming time;
3, before earth moving operations and when implementing to irrigate, throw in essence of loosening the soil, effectively can improve soil aggregate, eliminate soil compaction, strengthen soil penetrability, improve the shock-absorbing capacity of soil; Promote that in soil, beneficial microorganism grows, and improves utilization rate of fertilizer; Promote crop root growth, well developed root system, resistance against diseases strengthens, and effect of increasing production is obvious.
Embodiment
Embodiment 1
A kind of Drainage of salt method of greenbelt of heavy saline development zone of coastal region, it comprises the following steps: the soil surface of (one) every mu of heavy saline spreads fertilizer over the fields the essence of loosening the soil having 50g ~ 80g, and lay 200 kilograms ~ 300 kg of water rice straws, also can replace with maize straw or wheat stalk, earth moving operations is carried out to the soil of heavy saline, stalk is mixed uniformly in soil, depth of turning soil is 50cm ~ 80cm, root system due to small-sized vegetation is most in 30cm ~ 50cm degree of depth, the root system of arbor is most at about 60cm, vegetation root system can be arrived fast in order to ensure moisture, be convenient to Root Absorption, therefore depth of turning soil is set to 50cm ~ 80cm,
(2) Pipe for draining alkali is buried underground at heavy saline bottom angled dike, in heavy saline side, drain ditch and cistern are set, suction pump and water-delivery pump is provided with in described cistern, underground brackish water extracts and is stored in described cistern by described suction pump, drain ditch described in one end UNICOM that described Pipe for draining alkali is downward-sloping, described Pipe for draining alkali dike buried depth degree is 1m ~ 1.2m, and the spacing of adjacent described Pipe for draining alkali is 5m, is buried above described Pipe for draining alkali by the yellow sand of 10cm thickness or stalk dike;
(3) use the underground brackish water in cistern to implement to irrigate to heavy saline, implement to throw in loosen the soil essence and sodium carbonate in the underground brackish water of irrigating, described in the essence every mu of consumption that loosens the soil be 50g ~ 80g, described sodium carbonate amount is 1.5g/L ~ 2.5g/L.
The selected smart product that loosens the soil from Henan Xin Liyuan agricultural science and technology Co., Ltd that loosens the soil in the present embodiment, specification is 1000g/ bag.
Embodiment 2
The present embodiment is fresh water, the checking of the seepage velocity of brackish water in the heavy saline soil do not improved.
Preparation for examination earth pillar one: pick up from development zone, Yancheng City Xin Tan saltern for examination soil, surface soil salinity 27%, by 0cm ~ 20cm, 20cm ~ 40cm, 40cm ~ 60cm, 60cm ~ 80cm, 80cm ~ 100cm stratified sampling, through air-dry, fragmentation is sieved, each layer mixes rear layering and loads high 120cm, diameter is the pvc pipe of 50cm, the sandstone filtering layer of 10cm thickness is filled with bottom pvc pipe, be provided with bottom pvc pipe and drench liquid receiving system, 30cm in pvc pipe, 60cm, 90cm place is embedded with salt sub sensor, the time of the corresponding salt sub sensor depth of burying is arrived according to the data feedback determination wetted front of salt sub sensor.
Test solution one: fresh water, salinity 0.42g/L.
Test solution two: add sodium carbonate on the basis of test solution one, salinity is 2.92g/L, and wherein concentration of sodium carbonate is 2.5g/L.
Test solution three: add sodium carbonate on the basis of test solution one, salinity is 2.42g/L, and wherein concentration of sodium carbonate is 2g/L.
Test solution four: add sodium carbonate on the basis of test solution one, salinity is 1.92g/L, and wherein concentration of sodium carbonate is 1.5g/L.
Test solution five: brackish water, salinity 3.5g/L.
Table 1: different test solution is supplying the water transport characteristics in examination earth pillar one
Experiment shows, when wetted front arrives for examination earth pillar one 90cm place, the brackish water utilizing brackish water or be made up of fresh water interpolation sodium carbonate, as shown in test solution two, three, four, five, irrigate and only need 68 ~ 96 hours, and fresh water irrigation needs 462 hours.Show to utilize brackish water to implement to irrigate to heavy saline, under its moisture, infiltration rate degree is apparently higher than fresh water, can significantly shorten engineering consuming time.Simultaneously, supplying after test solution one is once irrigated tries earth pillar one, salt content drops to 24%, supplying after test solution time irrigation on May Day tries earth pillar one, salt content drops to 24.3%, salt rejection rate is close, namely shows: brackish water desalination effect is better, can effective desalination of the existing greenbelt saline-alkali soil of real aaaaaa.
Embodiment 3
The present embodiment is fresh water, the checking of the seepage velocity of brackish water in the heavy saline soil improved through stalk.
The present embodiment and embodiment two difference are the preparation for trying earth pillar two.
For examination earth pillar two preparation: with for try earth pillar one unlike, each mixing uniformly in 0cm ~ 20cm, the 20cm ~ 40cm of examination earth pillar two, 40cm ~ 60cm, 60cm ~ 80cm soil layer is supplied to have the rice straw of 88.3g (be equivalent to the rice straw of 300 kilograms every mu, depth of turning soil is 80cm).
Table 2: different test solution is supplying the water transport characteristics in examination earth pillar two
Experiment shows, when wetted front arrives for examination earth pillar two 90cm place, the brackish water utilizing brackish water or be made up of fresh water interpolation sodium carbonate, as shown in test solution two, three, four, five, irrigate and only need 41 ~ 58 hours, and fresh water irrigation needs 277 hours.Compared to the related experiment of embodiment two, the soil property for examination earth pillar two is softer, and under moisture, infiltration rate degree is faster, can improve about 40%, shortens engineering further consuming time.Simultaneously, supplying after test solution one is once irrigated tries earth pillar two, salt content drops to 24.2%, supplying after test solution time irrigation on May Day tries earth pillar two, salt content drops to 24.5%, salt rejection rate is close, namely shows: brackish water desalination effect is better, can realize effective desalination of greenbelt saline-alkali soil.In addition, because irrigation water is filled in heavy saline soil surface, salinity is dissolved, and being in continuous evaporation, in the process that salinity increases, the quickening of infiltration rate effectively can reduce the evaporation of soil surface irrigation water, avoid salinity in irrigation water too high, guarantee desalting effect.
Embodiment 4
The present embodiment is the checking of the seepage velocity that brackish water (test solution five) (supplies examination earth pillar one) and (supply examination earth pillar two) in the heavy saline soil of stalk improvement in the heavy saline soil do not improved.
Table 3: test solution five is supplying the water transport characteristics in examination earth pillar two
Table 4: test solution five is supplying the water transport characteristics in examination earth pillar one
Experiment shows, without the heavy saline soil of stalk improvement after 2 times are irrigated, third time irrigates moisture seepage velocity and obviously declines, and only first time irrigates 51% of moisture seepage velocity, needs earth moving operations again; And through the heavy saline soil of stalk improvement after 8 times are irrigated, irrigate that moisture seepage velocity just drops to that first time irrigates moisture seepage velocity for the 9th time 51%, need re-start earth moving operations, quantities obviously reduces, and significantly shortening engineering is consuming time.In usual practical operation, when moisture penetration speed drops to about 50% of first irrigation moisture seepage velocity, just need to re-start earth moving operations to heavy saline.
Claims (6)
1. a Drainage of salt method for the greenbelt in the heavy saline development zone of coastal region, it comprises the following steps:
(1) soil surface of every mu of heavy saline lays 200 kilograms ~ 300 kilograms stalks, carries out earth moving operations to the soil of heavy saline, and stalk is mixed uniformly in soil, and depth of turning soil is 50cm ~ 80cm;
(2) bury Pipe for draining alkali underground at heavy saline bottom angled dike, arrange drain ditch in heavy saline side, drain ditch described in one end UNICOM that described Pipe for draining alkali is downward-sloping, described Pipe for draining alkali dike buried depth degree is 1m ~ 1.2m, and the spacing of adjacent described Pipe for draining alkali is 5m;
(3) implement to irrigate using underground brackish water as water source to heavy saline.
2. the Drainage of salt method of the greenbelt in the heavy saline development zone of a kind of coastal region according to claim 1, is characterized in that: in step (), and every mu of described heavy saline spreads fertilizer over the fields the essence of loosening the soil having 50g ~ 80g.
3. the Drainage of salt method of the greenbelt in the heavy saline development zone of a kind of coastal region according to claim 2, it is characterized in that: in step (two), heavy saline side is also provided with cistern, be provided with suction pump and water-delivery pump in described cistern, underground brackish water extracts and is stored in described cistern by described suction pump.
4. the Drainage of salt method of the greenbelt in the heavy saline development zone of a kind of coastal region according to claim 3, is characterized in that: buried by the yellow sand of 10cm thickness or stalk dike above described Pipe for draining alkali.
5. the Drainage of salt method of the greenbelt in the heavy saline development zone of a kind of coastal region according to claim 1, it is characterized in that: in step (three), implement to throw in the underground brackish water of irrigating to loosen the soil essence, described in the essence every mu of consumption that loosens the soil be 50g ~ 80g.
6. the Drainage of salt method of the greenbelt in the heavy saline development zone of a kind of coastal region according to claim 5, it is characterized in that: in step (three), implement to throw in the underground brackish water of irrigating have sodium carbonate, described sodium carbonate amount is 1.5g/L ~ 2.5g/L.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410475828.2A CN105474823A (en) | 2014-09-18 | 2014-09-18 | Drainage salt-washing method for green belt of heavy saline-alkali land development region in coastal area |
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| CN201410475828.2A CN105474823A (en) | 2014-09-18 | 2014-09-18 | Drainage salt-washing method for green belt of heavy saline-alkali land development region in coastal area |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106134560A (en) * | 2016-07-01 | 2016-11-23 | 江苏科技大学 | A kind of improve beach saline-alkali ground the polymerization that plants economic crops |
| CN106717228A (en) * | 2016-11-28 | 2017-05-31 | 河南理工大学 | One kind damages land reclamation method based on biological material |
| CN108781576A (en) * | 2018-05-25 | 2018-11-13 | 河海大学 | A kind of beach desalination process of coupling water cycle |
| CN108990460A (en) * | 2018-08-14 | 2018-12-14 | 美丽国土（北京）生态环境工程技术研究院有限公司 | Beach saline land modification method, beach saline land structure-improved and application |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999066783A1 (en) * | 1998-06-25 | 1999-12-29 | Soil Air Technology Llc | Subsurface soil conditioning process |
| CN102257946A (en) * | 2011-04-27 | 2011-11-30 | 新疆农业大学 | Drop irrigation method for cotton planted in severe saline-alkali soil |
| CN103214321A (en) * | 2013-05-22 | 2013-07-24 | 河北省农林科学院滨海农业研究所 | Method for adjusting and restoring seashore saline soil by brackish water |
| CN103392404A (en) * | 2013-08-14 | 2013-11-20 | 河北省农林科学院滨海农业研究所 | Method for directly planting macrophanerophyte in natural soil of coast silt severe saline-alkali soil |
| CN103460843A (en) * | 2013-08-29 | 2013-12-25 | 青岛农业大学 | Quick saline-alkali land desalting system method by means of concealed-tube irrigation and drainage |
| CN204442994U (en) * | 2015-01-07 | 2015-07-08 | 浙江绿艺园林工程有限公司 | The alkaline land soil reforming system of planting plants |
-
2014
- 2014-09-18 CN CN201410475828.2A patent/CN105474823A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999066783A1 (en) * | 1998-06-25 | 1999-12-29 | Soil Air Technology Llc | Subsurface soil conditioning process |
| CN102257946A (en) * | 2011-04-27 | 2011-11-30 | 新疆农业大学 | Drop irrigation method for cotton planted in severe saline-alkali soil |
| CN103214321A (en) * | 2013-05-22 | 2013-07-24 | 河北省农林科学院滨海农业研究所 | Method for adjusting and restoring seashore saline soil by brackish water |
| CN103392404A (en) * | 2013-08-14 | 2013-11-20 | 河北省农林科学院滨海农业研究所 | Method for directly planting macrophanerophyte in natural soil of coast silt severe saline-alkali soil |
| CN103460843A (en) * | 2013-08-29 | 2013-12-25 | 青岛农业大学 | Quick saline-alkali land desalting system method by means of concealed-tube irrigation and drainage |
| CN204442994U (en) * | 2015-01-07 | 2015-07-08 | 浙江绿艺园林工程有限公司 | The alkaline land soil reforming system of planting plants |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106134560A (en) * | 2016-07-01 | 2016-11-23 | 江苏科技大学 | A kind of improve beach saline-alkali ground the polymerization that plants economic crops |
| CN106717228A (en) * | 2016-11-28 | 2017-05-31 | 河南理工大学 | One kind damages land reclamation method based on biological material |
| CN106717228B (en) * | 2016-11-28 | 2019-04-16 | 河南理工大学 | One kind damaging land reclamation method based on biological material |
| CN108781576A (en) * | 2018-05-25 | 2018-11-13 | 河海大学 | A kind of beach desalination process of coupling water cycle |
| CN108990460A (en) * | 2018-08-14 | 2018-12-14 | 美丽国土（北京）生态环境工程技术研究院有限公司 | Beach saline land modification method, beach saline land structure-improved and application |
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Application publication date: 20160413 |