CN1669684A - Process for improving alkaline land utilizing bitter natural freezing - Google Patents
Process for improving alkaline land utilizing bitter natural freezing Download PDFInfo
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- CN1669684A CN1669684A CNA2005100124503A CN200510012450A CN1669684A CN 1669684 A CN1669684 A CN 1669684A CN A2005100124503 A CNA2005100124503 A CN A2005100124503A CN 200510012450 A CN200510012450 A CN 200510012450A CN 1669684 A CN1669684 A CN 1669684A
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000007710 freezing Methods 0.000 title claims abstract description 29
- 230000008014 freezing Effects 0.000 title claims abstract description 29
- 230000008569 process Effects 0.000 title description 5
- 239000002689 soil Substances 0.000 claims abstract description 63
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 56
- 238000010257 thawing Methods 0.000 claims abstract description 11
- 238000009331 sowing Methods 0.000 claims abstract description 5
- 238000003973 irrigation Methods 0.000 claims description 27
- 230000002262 irrigation Effects 0.000 claims description 27
- 230000006872 improvement Effects 0.000 claims description 24
- 150000003839 salts Chemical class 0.000 claims description 22
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 10
- 239000011780 sodium chloride Substances 0.000 claims description 10
- 239000013505 freshwater Substances 0.000 claims description 8
- 229920000742 Cotton Polymers 0.000 claims description 4
- 241000208818 Helianthus Species 0.000 claims description 3
- 235000003222 Helianthus annuus Nutrition 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims 1
- 239000003673 groundwater Substances 0.000 abstract description 6
- 230000008859 change Effects 0.000 abstract description 3
- 230000007423 decrease Effects 0.000 abstract 1
- 238000007599 discharging Methods 0.000 abstract 1
- 238000011161 development Methods 0.000 description 7
- 230000018109 developmental process Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 238000002386 leaching Methods 0.000 description 7
- 239000000155 melt Substances 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 6
- 239000003513 alkali Substances 0.000 description 5
- 241001131796 Botaurus stellaris Species 0.000 description 4
- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- 241000209094 Oryza Species 0.000 description 3
- 235000007164 Oryza sativa Nutrition 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000284 extract Substances 0.000 description 3
- 238000011049 filling Methods 0.000 description 3
- 235000009566 rice Nutrition 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000010612 desalination reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000008635 plant growth Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 241000209202 Bromus secalinus Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 241001464837 Viridiplantae Species 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000518 rheometry Methods 0.000 description 1
- -1 salt ion Chemical class 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 238000009938 salting Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/40—Afforestation or reforestation
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention provides a method for frozen irrigating brackish water through the cold resource, based on the abundant of brackish water in the north shore plain and the dephlegmation principle, which can reform the alkaline land in large area. The technique is: A, building up the water intaking and drainage system, B, freezing in winter, C, thawing in spring, discharging 1/3-1/2 salted water, and immersing the latter thawy water to the soil, D, sowing in proper time. The method can decline the groundwater level of the shore plain area, and create the condition to change the waterlogged land and green the harbor economic region in low cost.
Description
Technical field
The present invention relates to a kind of natural cooling source and bitter natural freezing of utilizing and melt, belong to water resource utilization and soil improvement technical field from the method that improves the salt-soda soil.
Background technology
Saline-alkali soil is world's arid, the ubiquitous land type in semiarid zone, also is important land resource leaved for development.China's saline-alkali soil area has 100,000,000 mu.Be transformation salinity ground, done a large amount of scientific researches and activity in production, the most of salt-soda soil in Northeast plain and the Yellow River and Huai He River sea plain obtains improvement, but at the littoral plain that encircles the Bohai Sea, also has the large tracts of land saline-alkali wetland not obtain improvement.Main cause is: the conventional method of alkaline land improving is the fresh water desalinization of soil by flooding or leaching, and Bohai Rim is one of freshwater resources area the most in short supply at present, under the condition of phreatic high, rare freshwater resources, soil, strand more than ten million mu is under the saline and alkaline harm, and agricultural development is subjected to serious restriction.Simultaneously, the bitter of a large amount of high water level can't utilize, and the environment of " grey " has also influenced economic development, becomes the blind spot of east development.Press for new saline and alkali land improvement method, the improvement of acceleration environment and Agricultural Development.
Therefore, development and use bitter resource becomes the significant problem that science and technology research is paid close attention to already, also is the big problem that development Harbor regional economy must at first solve.
Summary of the invention
The invention provides a kind of characteristics of utilizing northern littoral plain bitter and cold resource of winter and depositing, make full use of the Changing Pattern of seasonal temperature, freeze fractional condensation and melt according to bitter from principle, utilize winter cold season joint resource " to freeze and irrigate bitter ", by freezing the quick improvement that realizes the large tracts of land salt-soda soil, improve regional environment.
Technical scheme of the present invention is achieved in that this method of utilizing bitter natural freezing improvement salt-soda soil, it is characterized in that it is intact by following steps:
A, foundation water intaking and drainage system: the well that extracts underground bitter, underground drainage pipeline or the gutter of being provided with are set nearby in pre-improvement plot;
B, winter irrigation freeze: utilize winter temperature to reach when stablize freezing period gradation and pour water, icingly naturally make ice layer thickness reach 18-25cm;
C, warm ice-melt of spring: at the spring warm season joint of temperature on average near 0 ℃, the thawing of control ice sheet, water conservancy diversion is discharged 1/3-1/2 melt water just, and the thawing water in later stage is infiltrated among the soil;
D, begin sowing in good time: sowing in time resists saline and alkaline crop.
The described method of utilizing bitter natural freezing improvement salt-soda soil, the drainage pipeline in the saline and alkaline plot of described steps A is set to underground 40-60cm, and the 10m of being separated by lays a drainpipe, is applied to the border irrigation of common spring sown crop or herbage.
The described method of utilizing bitter natural freezing improvement salt-soda soil, the gutter in the saline and alkaline plot of described steps A is set to per 20 meters a gutter is set, 1 meter of draining furrow width, dark 60cm, do furrow between ditch, long 10 meters wide 5 meters of the furrow ridge, the high 40cm in the furrow ridge, water irrigating depth reaches more than the 22cm, is applied to the border irrigation of common spring sown crop or herbage.
The described method of utilizing bitter natural freezing improvement salt-soda soil, the winter irrigation method also can adopt and directly get swag ice and be piled up in saline and alkaline plot among the described step B.
The described method of utilizing bitter natural freezing improvement salt-soda soil, the winter irrigation method also comprises the hole irrigation method among the described step B, cheats dark 60-100cm, diameter 80-100cm, stay pour water channel and water collecting sump along more than the 30cm, water irrigating depth reaches more than the 22cm in the scope of territory, hole, is applied to afforestation.
The described method of utilizing bitter natural freezing improvement salt-soda soil is characterized in that the winter irrigation method also comprises the ditch irrigation method among the described step B, and ditch is apart from 100cm, furrow width 40-80cm, degree of depth 20-30cm, water irrigating depth reaches more than the 22cm in the scope of ditch territory, is applied to cotton, sunflower and similar crop.
Technological progress effect of the present invention shows:
1. overcome the difficulty of northern freshwater resources deficiency, rely on the bitter resource to realize alkaline land improving;
2. by the utilization of bitter, reduce the coastal region groundwater level, created condition for thoroughly changing the low-lying easy waterlogging salinization of soil serious environmental in littoral area;
3. fresh water is the source of life of green plants, can the low-cost environmental greening that realizes the economic zone, Harbor.
Description of drawings
Fig. 1 is a kind of well location and sprinkling irrigation distribution map that extracts underground bitter
Among the figure: 1, vacuum well 2, shower head
Fig. 2 is a closed drainage system sectional drawing
Among the figure 3, closed drain 4, screen pack
Fig. 3 is the gutter drainage system schematic
Among the figure: 5, the furrow ridge 6, open drain
Fig. 4 is that soil body salt content changed schematic diagram before and after solonchak ice changed
Fig. 5 is the waterline schematic diagram after level of ground water is drawn water
Among the figure: 8, ground level 9, vacuum well 7, waterline
Fig. 6 is the phreatic line schematic diagram through overbalance
Among the figure: 7-1,7-2, dynamic water table line 7-3, equilibrium water bit line
Fig. 7, Fig. 8, Fig. 9 are the graphs of a relation of ground temperature variation and soil freezing
Figure 10 is bitter concentration and fractional condensation desalination design sketch
Figure 11 is that ice cube melts from process change of water quality curve map
The specific embodiment
Solonchak is the class soil that salt content surpasses plant growth tolerance threshold value, and marine solonchak is moist sticking heavy, and the enrichment plurality of inorganic salt is subjected to the underground water jacking, draining salt discharge difficulty.And bitter is a kind of water resource of strand enormous amount, basic design of the present invention is to utilize the bitter winter irrigation to freeze, freeze in the cycle of taking advantage of a situation that the spring melts in the winter, the physical phase transition and the chemical rheology of a series of complexity take place between the solid, liquid, gas of solonchak, the salt, it is fluffy that the soil body becomes, water penetration is strengthened, and inorganic salts is by successive drip washing improvement saline-alkali soil.Its treatment step is as follows:
1. freeze the filling fractional condensation:
Fractional condensation takes place in the high salinity bitter among Figure 10 when temperature is lower than zero degree, with the form generation salt of ice and bittern and separating of water.The salinity of primary crystal ice body is less than 4g/l; Along with icing degree increases the weight of, the salt ion that ice body is swept along increases, the salinity of ice improves, and the simultaneously remaining bittern salinity of not freezing increases, when bitter of the present invention shown in Figure 10 freezes to 2/3 left and right sides, be that bittern/bitter volume ratio reaches about 0.3, the residual halogen water concentration can reach more than 2 times of original content, total remain in the 40-60% that salt in the bittern reaches the salt amount, moves down with gravity, infiltrate among the soil, the layers of ice salt rejection rate on the soil surface reaches 40-60% at this moment.
Irrigation period will enter stablize freezing period after period before thaw, according to meteorological record, generally daily mean temperature begins to be lower than after 0 degree 5-7 days and just can begin in the winter time.Irrigation method adopts alternately gradation to pour water; The icing thickness of pouring water reaches about 20-25cm, quite water irrigating depth 22Cm.
Draw water with well irrigation as Fig. 5, groundwater level shown in Figure 6 under the situation of upper soll layer icing and be funnel-form and descend, through the ground water movement in winter, it is flat that water level becomes, and calculates the water level in the homalographic zone 3-5 rice that can descend according to specific yield (0.04).Created condition for holding the salt water that infiltrates during ice-out spring.
2. separate freeze thawing from the desalinization of soil by flooding or leaching:
During the saliferous ice-out, salt is separated out with the frozen water that melts earlier and is permeated the ground, and by drainage system salt solution is discharged, and the ice that melt the back is mainly fresh water, permeates the ground the salinity flush away again, melts from the desalinization of soil by flooding or leaching so be called.As shown in figure 11: melt from the degree of desalination relevantly, slowly melt good separating effect, help desalinating with the intensity and the degree of thawing.Change of water quality (salinity) curve with thawing water segmentation successively is an exponential curve:
y＝ae
-bx
Wherein y is the salinity of water, and X is the unit umber of melt water, and coefficient a, b are relevant with the salinity and the thaw condition of ice.The salinity of ice is low more, melts from the quality and the ratio of fresh water big more.
Room temperature (17 ℃) is melted parameter list
| Cryosel degree (g/l) | The a coefficient | The b coefficient |
| ??15 | ??76 | ??-0.52 |
| ??10 | ??61 | ??-0.61 |
| ??5 | ??53 | ??-0.95 |
3. the effect of the desalinization of soil by flooding or leaching: the effect of the desalinization of soil by flooding or leaching and bitter salinity, irrigate quantity and soil salt content relevant.Melt successive from frozen water and infiltrate mobilely, the distribution of salt in soil layer changed, the salt content of solonchak before and after freezing improvement as shown in Figure 4.
The bitter ice (salinity 15g/l) that battery of tests data of the present invention are suitable water irrigating depth 30mm is after the soil table melts, and soil salt content distributes as follows:
| Level (cm) | Soil salt content (%) | Soil salinization classification | ||
| Experiment one | Experiment two | Experiment three | ||
| ?0-2 | ????0.170 | ????0.171 | ????0.123 | The light salination 0.4-0.6% of＜0.2% non-salination 0.2-0.4% medium salting 0.6-1% heavily saltedization＞1% solonchak |
| ?2-4 | ????0.235 | ????0.244 | ????0.221 | |
| ?4-6 | ????0.349 | ????0.328 | ????0.444 | |
| ?6-8 | ????0.607 | ????0.487 | ????0.708 | |
| ?8-10 | ????0.736 | ????0.767 | ????0.85 | |
| ?10-12 | ????～ | ????0.911 | ????0.877 | |
| The average salt content % of the soil body | ????0.419 | ????0.485 | ????0.534 | |
| Leakage water salinity (g/l) | ????～ | ????49.13 | ????43.21 | |
Other battery of tests data of the present invention are that the irrigation experiment of suitable water irrigating depth 20cm, bitter (15g/l), the average saliferous 0.7% of one meter soil body (sand soil) shows: the topsoil salinity of soil can drop to the level (＜0.2%) of plant growth needs.Result such as following table:
| Soil layer (cm) | Soil salt (%) | |
| Before the experiment | After ice changes experiment | |
| ?0-10 | ????3.00 | ?????0.084 |
| ?10-20 | ????1.00 | ?????0.092 |
| ?20-30 | ????0.80 | ?????0.101 |
| ?30-40 | ????0.60 | ?????0.113 |
| ?40-50 | ????0.40 | ?????0.123 |
| ?50-60 | ????0.30 | ?????0.150 |
| ?60-70 | ????0.20 | ?????0.167 |
| ?70-80 | ????0.20 | ?????0.232 |
| ?80-90 | ????0.20 | ?????0.454 |
| ?90-100 | ????0.20 | ?????0.622 |
| One meter average salt content of the soil body | ????0.69 | ?????0.214 |
When the season that spring heating installation temperature is gone up, during approaching-2 ℃ of temperature on average, soil begins to melt, when reaching 0 ℃, and the bottom-up circulation of soil, ice sheet also begins to melt simultaneously.The thawing speed that can adopt covering to wait measure to delay to ice, ice sheet are than the late thawing of soil, thawing helps improving desalinization of soil by flooding or leaching effect slowly.The relation of ground temperature variation and soil freezing is shown in Fig. 7,8,9.
Embodiment
1, " border irrigation " is the basic mode that comprehensively improves the salt-soda soil, can be used for common spring sown crop or pasture growing.At first adopt the well irrigation groundwater abstraction, with lowering of watertable.The well location that extracts underground bitter is laid relevant to water speed, well type with soil property, a kind of embodiment that the present invention provides as shown in Figure 1: with vacuum well 1 is that the center is provided with a shower head 2 every 30 meters; Well types such as vacuum well, pipe well, big well can use, and drainage system is improved in bedding comprehensively wholely.
" border irrigation " of the present invention provides the embodiment of two kinds of drainings:
1. closed drainage, as shown in Figure 2; Freezing filling melts from the drainability of the desalinization of soil by flooding or leaching effect and the soil body closely related, draining is system engineering of the present invention, among the figure apart from ground 40-60cm, closed drain 3 is set every 10 meters, the basic mentality of designing of closed drain is that a semi-open water pipe combined filtering medium constitutes the open portion composite filter net 4 on water pipe top, the outside seepage water of formation can be entered, that can compile again harvests pipeline, and screen pack can also be compounded in inner-walls of duct, and the top of pipeline has infiltrates the hole to reach same purpose.
2. gutter drainage, as shown in Figure 3; Wherein furrow are long 10 meters, and furrow are wide 5 meters, the high 40cm in the furrow ridge, and 20 meters of spacing of drainage ditches, wide 1 meter, dark 60cm to freezing season, carries out border irrigation, and it is above for well that water irrigating depth reaches 22cm.The icing circulation process of control just can guarantee that soil salt content drops to the standard that plantations such as crop or herbage need in the furrow.
2, irritate in the hole: be mainly used in afforestation.Require to determine the plantation point on ground according to afforestation: seeding row spacing 2 * 2 or 3 * 3 meters, according to the standard on the whole ground of hollow place, general ploughed depth 60-100cm, diameter 80-100cm puts in order ground in the fall, stays pour water channel and water collecting sump along more than the 30cm.
To freezing season, cheat filling, to reach 22cm above for well for water irrigating depth in the scope of territory, hole.The icing circulation process of control, soil salt content drops to the standard that afforestation needs in the hole that just can guarantee to plant trees.
3, furrow irrigation: be used for industrial crops such as cotton, sunflower.Ditch autumn wholely, general ditch is apart from 100cm, and ditch is apart from 1-2 rice, and furrow width 0.4-0.8 rice is ploughed depth of soil preparation 20-30cm, can utilize dark pine plough or ditching plow operation.
To freezing season, irrigate through furrow, to reach 22cm above for well for water irrigating depth in the scope of ditch territory.The control circulation process of freezing, just can guarantee soil salt content in the ditch drop to plantation such as cotton need standard.
Listed examples of the present invention is intended to further to illustrate this method and the embodiment that utilizes natural cooling source to freeze to melt from the improvement salt-soda soil, and protection scope of the present invention is not constituted any restriction.
Claims (6)
1, utilize the method in bitter natural freezing improvement salt-soda soil, it is characterized in that it is finished by following steps:
A, foundation water intaking and drainage system: intending the well that the improvement plot is provided with the underground bitter of extraction nearby, underground drainage pipeline or the gutter of being provided with;
B, winter irrigation freeze: utilize winter temperature to reach and stablize the freezing period gradation and pour water, icingly naturally make ice layer thickness reach 18-25cm;
C, warm ice-melt of spring: in the spring warm season joint of temperature on average near 0 ℃, the thawing of control ice sheet.Water conservancy diversion is discharged 1/3-1/2 and is just melted salt water, and the thawing fresh water in later stage is infiltrated among the soil;
D, begin sowing in good time: sowing in time resists saline and alkaline crop.
2, according to the described method of utilizing bitter natural freezing improvement salt-soda soil of claim 1, the drainage pipeline that it is characterized in that the saline and alkaline plot of described steps A is set to underground 40-60cm, the 10m of being separated by lays a drainpipe, is applied to the border irrigation of common spring sown crop or herbage.
3, according to the described method of utilizing bitter natural freezing improvement salt-soda soil of claim 1, it is characterized in that the saline and alkaline plot of described steps A is provided with a gutter for per 20 meters, 1 meter of draining furrow width, dark 60cm does furrow between ditch, long 10 meters of the furrow ridge, wide 5 meters, the high 40cm in the furrow ridge, the gutter water irrigating depth reaches more than the 22cm, is applied to the border irrigation of common spring sown crop or herbage.
4,, it is characterized in that among the described step B that the winter irrigation method also can adopt directly to get swag ice and be piled up in saline and alkaline plot according to the described method of utilizing bitter natural freezing improvement salt-soda soil of claim 1.
5, according to the described method of utilizing bitter natural freezing improvement salt-soda soil of claim 1, it is characterized in that the winter irrigation method also comprises the hole irrigation method among the described step B, cheat dark 60-100cm, diameter 80-100cm, water irrigating depth reaches more than the 22cm in the scope of territory, hole, is applied to afforestation.
6, according to the described method of utilizing bitter natural freezing improvement salt-soda soil of claim 1, it is characterized in that the winter irrigation method also comprises the ditch irrigation method among the described step B, ditch is apart from 100cm, furrow width 40-80cm, degree of depth 20-30cm, water irrigating depth reaches more than the 22cm in the scope of ditch territory, is applied to cotton, sunflower and similar crop.
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| CN100571914C (en) * | 2007-09-03 | 2009-12-23 | 浙江省农业科学院 | The ecological engineering regulation method of the fast prompt drop salt of a kind of soil of sand coating region |
| CN102144523A (en) * | 2011-03-08 | 2011-08-10 | 天津市农业资源与环境研究所 | Sidewalk-frozen tree planting method for coastal saline-salt soil |
| CN102173523A (en) * | 2011-03-08 | 2011-09-07 | 天津市农业资源与环境研究所 | Device for naturally desalting salt water and use method thereof |
| CN102301905A (en) * | 2011-08-12 | 2012-01-04 | 中国科学院遗传与发育生物学研究所 | Method for planting beet in coastal heavy saline-alkali soil |
| CN102301906A (en) * | 2011-08-12 | 2012-01-04 | 中国科学院遗传与发育生物学研究所 | Method for planting cotton in coastal heavy saline-alkali land |
| CN102326487A (en) * | 2011-08-12 | 2012-01-25 | 中国科学院遗传与发育生物学研究所 | Method for planting sunflowers in serious saline and alkaline land by sea |
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| CN103222387A (en) * | 2013-05-21 | 2013-07-31 | 中国科学院遗传与发育生物学研究所 | Method suitable for intercropping sorgho and sesbania on saline and alkaline land |
| CN103999739A (en) * | 2014-06-05 | 2014-08-27 | 北京师范大学 | North coastal region saline soil irrigation method and system in winter |
| CN105104106A (en) * | 2015-09-23 | 2015-12-02 | 潍坊友容实业有限公司 | Winter irrigation method for saline and alkaline land in northern area |
| CN108076713A (en) * | 2017-12-27 | 2018-05-29 | 北京师范大学 | Alkali method drops in a kind of salinized soil desalinization of soil by flooding or leaching |
| CN108848733A (en) * | 2018-07-12 | 2018-11-23 | 中国科学院遗传与发育生物学研究所农业资源研究中心 | A method of improvement heavy saline-alkali area at seashore |
| CN109566281A (en) * | 2018-12-20 | 2019-04-05 | 大禹节水（天津）有限公司 | A kind of alfalfa border irrigation implantation methods |
| CN109970152A (en) * | 2019-04-30 | 2019-07-05 | 山东农业大学 | A kind of salt-soda soil distribution pumping is salty to change light irrigation and drainage coupling improvement system and application method |
| CN112703851A (en) * | 2020-12-28 | 2021-04-27 | 魏永阳 | Ecological restoration method for saline-alkali soil |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1121487A (en) * | 1994-10-23 | 1996-05-01 | 廖国生 | Fresh water extracting method from seawater by refrigerating method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100571914C (en) * | 2007-09-03 | 2009-12-23 | 浙江省农业科学院 | The ecological engineering regulation method of the fast prompt drop salt of a kind of soil of sand coating region |
| CN102144523A (en) * | 2011-03-08 | 2011-08-10 | 天津市农业资源与环境研究所 | Sidewalk-frozen tree planting method for coastal saline-salt soil |
| CN102173523A (en) * | 2011-03-08 | 2011-09-07 | 天津市农业资源与环境研究所 | Device for naturally desalting salt water and use method thereof |
| CN102301905B (en) * | 2011-08-12 | 2013-01-02 | 中国科学院遗传与发育生物学研究所 | Method for planting beet in coastal heavy saline-alkali soil |
| CN102301906A (en) * | 2011-08-12 | 2012-01-04 | 中国科学院遗传与发育生物学研究所 | Method for planting cotton in coastal heavy saline-alkali land |
| CN102326487A (en) * | 2011-08-12 | 2012-01-25 | 中国科学院遗传与发育生物学研究所 | Method for planting sunflowers in serious saline and alkaline land by sea |
| CN102405746A (en) * | 2011-08-12 | 2012-04-11 | 中国科学院遗传与发育生物学研究所 | Planting method of sweet sorghum in coastal server saline-alkali soil |
| CN102301906B (en) * | 2011-08-12 | 2012-11-28 | 中国科学院遗传与发育生物学研究所 | Method for planting cotton in coastal heavy saline-alkali land |
| CN102301905A (en) * | 2011-08-12 | 2012-01-04 | 中国科学院遗传与发育生物学研究所 | Method for planting beet in coastal heavy saline-alkali soil |
| CN103222387A (en) * | 2013-05-21 | 2013-07-31 | 中国科学院遗传与发育生物学研究所 | Method suitable for intercropping sorgho and sesbania on saline and alkaline land |
| CN103999739A (en) * | 2014-06-05 | 2014-08-27 | 北京师范大学 | North coastal region saline soil irrigation method and system in winter |
| CN103999739B (en) * | 2014-06-05 | 2016-08-10 | 北京师范大学 | A kind of winter irrigation method and system in coastal region salt-soda soil, the north |
| CN105104106A (en) * | 2015-09-23 | 2015-12-02 | 潍坊友容实业有限公司 | Winter irrigation method for saline and alkaline land in northern area |
| CN108076713A (en) * | 2017-12-27 | 2018-05-29 | 北京师范大学 | Alkali method drops in a kind of salinized soil desalinization of soil by flooding or leaching |
| CN108848733A (en) * | 2018-07-12 | 2018-11-23 | 中国科学院遗传与发育生物学研究所农业资源研究中心 | A method of improvement heavy saline-alkali area at seashore |
| CN109566281A (en) * | 2018-12-20 | 2019-04-05 | 大禹节水（天津）有限公司 | A kind of alfalfa border irrigation implantation methods |
| CN109970152A (en) * | 2019-04-30 | 2019-07-05 | 山东农业大学 | A kind of salt-soda soil distribution pumping is salty to change light irrigation and drainage coupling improvement system and application method |
| CN109970152B (en) * | 2019-04-30 | 2023-09-19 | 山东农业大学 | Saline-alkali soil distributed salty-extraction-to-light-drainage-irrigation coupling improvement system and use method |
| CN112703851A (en) * | 2020-12-28 | 2021-04-27 | 魏永阳 | Ecological restoration method for saline-alkali soil |
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