CN105144888A - Saline land improvement method and improvement system - Google Patents

Saline land improvement method and improvement system Download PDF

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Publication number
CN105144888A
CN105144888A CN201510373114.5A CN201510373114A CN105144888A CN 105144888 A CN105144888 A CN 105144888A CN 201510373114 A CN201510373114 A CN 201510373114A CN 105144888 A CN105144888 A CN 105144888A
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China
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salt
soil
saline
improvement
layer
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CN201510373114.5A
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Chinese (zh)
Inventor
王胜
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Weifang Yourong Industry Co Ltd
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Weifang Yourong Industry Co Ltd
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Priority to CN201510373114.5A priority Critical patent/CN105144888A/en
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Abstract

The invention belongs to the saline land improvement technical field, and especially relates to a saline land improvement method and improvement system; the method comprises the following steps: 1, trenching; 2, draining; 3, isolation; 4, soil refilling; 5, fresh water irrigation; 6, laying organoclay; the system comprises a trench, and the trench comprises a drainage device, an isolation layer and a soil layer arranged in sequence from bottom to top; the drainage device comprises a plurality of salt collection pipes and salt discharge pipes connected with the salt collection pipes; the salt discharge pipe is provided with a salt discharge valve; a waterproof layer is arranged on an inner side of the trench; the method is simple in steps, easy to operate, can effectively reduce saline-alkaline level in the saline land, is suitable for crops plantation, low in improvement cost, and an improvement effect lasts in a long time.

Description

A kind of saline and alkali land improvement method and improved system
Technical field
The invention belongs to alkaline land improving technical field, particularly relate to a kind of saline and alkali land improvement method and improved system.
Background technology
Plough and day by day reduce and become a global difficult problem, exploitation Coastal beach, saline land, inland, make full use of existing resource, be a good selection.China's arable area is limited, and all kinds of Coastal beach ground about has more than 8,000,000 mu, saline and alkaline thousand point more than three, the saline land of less than 8/1000ths is because salt content is large, idle, utilized reluctantly, utilized reluctantly, its output also very low, economic benefit is very bad.
Saline land is a kind of salt aggregation, refer to that salinity contained inside soil has influence on the normal growth of crop, according to UNESCO and food and agricultural organization's incomplete statistics, the area in saline land, the whole world is 9.5438 hundred million hectares, and wherein China is 9,913 ten thousand hectares.The formation of China's alkaline earth and alkali-affected soil, major part is accumulative relevant with Carbonates In Soil, thus basicity is general higher, serious salt affected soil regional plant almost can not be survived, saline land is planted flowers, plants and trees easily growth retardation or death by Saline Alkali Stress, limit the progress of saline land greening and ecological recovery.
At present, the domestic processing method to saline land generally comprises salt discharge method and pressure salt method etc., but they all also exist weak point, and such as, salt discharge method by using a large amount of fresh water to rinse for a long time saline land, the salt content on surface, saline land is reduced.Pressure salt method utilizes natural precipitation or artificial flood to irrigate, make the infiltration downwards such as the saline and alkaline hole along soil of part, crack, by the salinity of topsoil with water-band to bottom, although said method can make the salt content on top layer, saline land reduce, but it is permanent to keep not, and need a large amount of water sources, therefore, need urgently to develop a kind of water consumption little and can be permanently effective the method in improvement saline land and the planting technique method in saline land.
Summary of the invention
An object of the present invention is: the deficiency existed for prior art, provides a kind of cost low, can reduce saline and alkaline, is applicable to the saline and alkali land improvement method of crop-planting.
For solving the problems of the technologies described above, technical scheme of the present invention is:
A kind of saline and alkali land improvement method, said method comprising the steps of:
(1) ditching: excavation many ditches are carried out to saline land, the degree of depth of every bar ditch is 80-100cm;
(2) draining: drainage arrangement is set in the bottom of every bar ditch;
(3) isolate: above described drainage arrangement, bury separation layer underground, the thickness of described separation layer is 5-10cm, and the inner side of described ditch is equipped with waterproof Polypropylence Sheet;
(4) soil is returned: fill out back in described ditch by the soil dug out in step (1);
(5) fresh water is irrigated: to top layer, the saline land pouring fresh water returned after soil.
Improve as one, described method also comprises: (6) lay histosol: one deck histosol is laid on the top layer, saline land after pouring fresh water, and the thickness of histosol is 10-30cm.
As one improve, in step (2), described drainage arrangement comprise many collection salt pipes and with the described many salt discharging pipes collecting salt pipe and be communicated with, described salt discharging pipe is provided with salt discharge valve.
Improve as one, in step (3), described separation layer is cinder, sandstone or haydite.
Improve as one, histosol described in step (6) is plant ash soil.
Another object of the present invention is: provide a kind of alkaline land improving system.
Described system comprises groove, drainage arrangement, separation layer and soil horizon is provided with successively from bottom to top in described groove, described drainage arrangement comprise many collection salt pipes and with the described many salt discharging pipes collecting salt pipe and be communicated with, described salt discharging pipe is provided with salt discharge valve, and the inner side of described groove is provided with watertight composition.
Improve as one, the import department of described collection salt pipe is provided with filter course.
As improving further, described filter course is nonwoven layer.
Improve as one, described system also comprises organic soil layer, and described organic soil layer is overlying on described soil horizon.
Improve as one, described watertight composition is waterproof plastics layer of cloth.
Owing to have employed technique scheme, the invention has the beneficial effects as follows:
Improvement method provided by the invention, its step is simple, be easy to operation, can loosen to soil during ditching, drainage arrangement in ditch effectively can control groundwater quality, the underground water that timely eliminating salt content is high, separation layer can effectively stop soil enter drainage arrangement with water and block drainage arrangement, waterproof Polypropylence Sheet can prevent high concentration salt solution from entering in ditch to affect the growth of crop by the side reverse osmosis of ditch, top layer, saline land pouring fresh water after returning soil can accelerate salinity in soil to drain, and much fewer than the simple amount using fresh water salt discharge method to use of fresh water amount used, the present invention effectively can reduce the saline and alkaline in saline land, be suitable for the plantation of crops, and its improvement cost is lower, its improved effect can be lastingly long-acting.
Salt solution in soil is pooled in salt discharging pipe through collection salt pipe, the place of specifying is drained into again through salt discharging pipe, the filter course that the import department of collection salt pipe is provided with can avoid foreign material and soil etc. to enter blocking collection salt pipe in collection salt pipe, the draining valve that salt discharging pipe is provided with, water in the soil in improvement later stage can be prevented, fertile loss, facilitate fresh water to the infiltration in the saline land below pipeline simultaneously, thus be conducive to the improvement of the deep soil in saline land, also help root system of plant to downward-extension, thus be conducive to improvement and the long-acting maintenance lastingly of improved effect of the soil in saline land further.
The histosol that top layer, saline land is laid, can make the soil in saline land penetrating, be convenient to draining salt reduction, increases the soil organic matter after rotting, and for crop growth supplies nutrients, keeps the moisture in soil, promotes the growth of crops.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of alkaline land improving system that embodiment one provides;
Fig. 2 is the structural representation of drainage arrangement in Fig. 1;
Fig. 3 is the structural representation of a kind of alkaline land improving system that embodiment two provides;
Fig. 4 is the flow chart of a kind of saline and alkali land improvement method provided by the invention;
Wherein: 1-drainage arrangement, 2-separation layer, 3-soil horizon, 4-watertight composition, 5-organic soil layer, 11-collection salt pipe, 12-salt discharging pipe, 121-salt discharge valve.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Embodiment one
Fig. 1 shows the structural representation of the alkaline land improving system that the present embodiment provides, and for convenience of explanation, this figure only provides the structure division relevant with the present invention.
As shown in Figure 1, a kind of alkaline land improving system, described system comprises groove, drainage arrangement 1, separation layer 2 and soil horizon 3 is provided with from bottom to top successively in groove, as shown in Figure 2, drainage arrangement 1 comprises many collection salt pipes 11 and a salt discharging pipe 12, collection salt pipe 11 and salt discharging pipe 12 can be plastic tube or metal tube, many collection salt pipes 11 are all communicated with salt discharging pipe 12, many collection salt pipes 11 vertically arrange, and salt discharging pipe 12 is transversely arranged, and salt discharging pipe 12 is provided with salt discharge valve 121, the inner side of groove is provided with watertight composition 4, and watertight composition 4 is preferably waterproof plastics layer of cloth.
Moisture in the above soil of groove is from permeating from top to bottom, drain through collection salt pipe and salt discharging pipe greatly, in the improvement later stage by closing the salt discharge valve on salt discharging pipe, make salt discharging pipe that the water in soil can not be continued to arrange outward, thus avoid the waste of water and nutriment in improvement later stage soil, be conducive to water toward the deep soil stream below salt discharging pipe simultaneously, thus the acid-base material can taken away by current in a part of deep soil, thus be conducive to the up to standard of the acid-base value of deep soil, be conducive to root system of plant to downward-extension, also be conducive to the further improvement of crops to saline land simultaneously.
Embodiment two
Fig. 3 shows the structural representation of the alkaline land improving system that the present embodiment provides, and for convenience of explanation, this figure only provides the structure division relevant with the present invention.
The structure of the alkaline land improving system in the present embodiment is substantially identical with the structure in embodiment one, and its difference is:
As shown in Figure 3, described system also comprises organic soil layer 5, and organic soil layer 5 is overlying on soil horizon 3, and the import department of collection salt pipe 11 is provided with filter course, and filter course is preferably nonwoven layer, selects non-woven fabrics to carry out the filtration of saline-alkali water, and its filter effect is better and cost is low.
Embodiment three
A kind of saline and alkali land improvement method, said method comprising the steps of:
(1) ditching: by excavator or other instrument that plows, ditching is carried out to saline land, many ditches can be excavated, the degree of depth of every bar ditch is 80-100cm, and width is 80-100cm;
(2) draining: drainage arrangement is set in the bottom of every bar ditch, drainage arrangement comprise many collection salt pipes and with the many salt discharging pipes collecting salt pipe and be communicated with, salt discharging pipe is provided with salt discharge valve;
(3) isolate: above drainage arrangement, bury separation layer underground, the thickness of separation layer is 5-10cm, separation layer is preferably cinder, sandstone or haydite, the particle diameter of cinder, sandstone, haydite is preferably 0.6-1.0cm, wherein, haydite utilizes the raw material such as clay or sandstone, form through ceramic post sintering, the inner side of ditch is equipped with waterproof Polypropylence Sheet;
(4) soil is returned: fill out back in ditch by the soil dug out in step (1);
(5) fresh water is irrigated: to top layer, the saline land pouring fresh water returned after soil, every square metre of amount of irrigating fresh water is 1.2-1.5 cubic meter, close salt discharge valve, after fresh water enters saline land, flow to direction, the earth's core under gravity, current will dissolve and wash away the part salt alkaloid substance of the following soil of pipeline, thus accelerate the improvement in deep layer saline land.
Embodiment four
A kind of saline and alkali land improvement method, said method comprising the steps of:
(1) ditching: by excavator or other instrument that plows, ditching is carried out to saline land, many ditches can be excavated, the degree of depth of every bar ditch is 80-100cm, and width is 80-100cm;
(2) draining: drainage arrangement is set in the bottom of every bar ditch, drainage arrangement comprise many collection salt pipes and with the many salt discharging pipes collecting salt pipe and be communicated with, salt discharging pipe is provided with salt discharge valve;
(3) isolate: above drainage arrangement, bury separation layer underground, the thickness of separation layer is 5-10cm, separation layer is preferably cinder, sandstone or haydite, the particle diameter of cinder, sandstone, haydite is preferably 0.6-1.0cm, wherein, haydite utilizes the raw material such as clay or sandstone, form through ceramic post sintering, the inner side of ditch is equipped with waterproof Polypropylence Sheet;
(4) soil is returned: fill out back in ditch by the soil dug out in step (1);
(5) fresh water is irrigated: to top layer, the saline land pouring fresh water returned after soil, every square metre of amount of irrigating fresh water is 1.2-1.5 cubic meter;
(6) lay histosol: one deck histosol is laid on the top layer, saline land after pouring fresh water, histosol is plant ash soil, and plant ash soil is plant ash after burning and the mixture of soil, and it is nutritious and cost is lower, and the thickness of histosol is 10-30cm.
Improvement method provided by the invention, effectively can control groundwater quality, the underground water that timely eliminating salt content is high, effectively prevent accumulation of salt in the surface soil phenomenon, the method desalination improved, process is short, and soil fertility recovers fast, successful and keep lasting, overcome the method generally adopting in current alkaline land improving and add broad irrigation and irrigate, have effectively achieved water saving, effectively improve the availability in saline land.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.

Claims (10)

1. a saline and alkali land improvement method, is characterized in that, said method comprising the steps of:
(1) ditching: excavation many ditches are carried out to saline land, the degree of depth of every bar ditch is 80-100cm;
(2) draining: drainage arrangement is set in the bottom of every bar ditch;
(3) isolate: above described drainage arrangement, bury separation layer underground, the thickness of described separation layer is 5-10cm, and the inner side of described ditch is equipped with waterproof Polypropylence Sheet;
(4) soil is returned: fill out back in described ditch by the soil dug out in step (1);
(5) fresh water is irrigated: to top layer, the saline land pouring fresh water returned after soil.
2. a kind of saline and alkali land improvement method as claimed in claim 1, is characterized in that, described method also comprises: (6) lay histosol: one deck histosol is laid on the top layer, saline land after pouring fresh water, and the thickness of histosol is 10-30cm.
3. a kind of saline and alkali land improvement method as claimed in claim 1, is characterized in that, in step (2), described drainage arrangement comprise many collection salt pipes and with the described many salt discharging pipes collecting salt pipe and be communicated with, described salt discharging pipe is provided with salt discharge valve.
4. a kind of saline and alkali land improvement method as claimed in claim 1, is characterized in that, in step (3), described separation layer is cinder, sandstone or haydite.
5. a kind of saline and alkali land improvement method as claimed in claim 2, is characterized in that, histosol described in step (6) is plant ash soil.
6. an alkaline land improving system, it is characterized in that, described system comprises groove, drainage arrangement, separation layer and soil horizon is provided with successively from bottom to top in described groove, described drainage arrangement comprise many collection salt pipes and with the described many salt discharging pipes collecting salt pipe and be communicated with, described salt discharging pipe is provided with salt discharge valve, and the inner side of described groove is provided with watertight composition.
7. a kind of alkaline land improving system as claimed in claim 6, is characterized in that, the import department of described collection salt pipe is provided with filter course.
8. a kind of alkaline land improving system as claimed in claim 7, is characterized in that, described filter course is nonwoven layer.
9. a kind of alkaline land improving system as claimed in claim 6, it is characterized in that, described system also comprises organic soil layer, and described organic soil layer is overlying on described soil horizon.
10. a kind of alkaline land improving system as claimed in claim 6, is characterized in that, described watertight composition is waterproof plastics layer of cloth.
CN201510373114.5A 2015-06-30 2015-06-30 Saline land improvement method and improvement system Pending CN105144888A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106105451A (en) * 2016-07-15 2016-11-16 山东胜伟园林科技有限公司 A kind of alkaline land soil plate and maintaining method thereof
CN106337403A (en) * 2016-08-30 2017-01-18 山东胜伟园林科技有限公司 Burying method of water collecting tank
CN106376271A (en) * 2016-08-31 2017-02-08 杭州中艺生态环境工程有限公司 Method for continuously improving saline-alkali soil
CN106376270A (en) * 2016-08-31 2017-02-08 杭州中艺生态环境工程有限公司 Sustainably improved planting structure of saline and alkaline land
CN106416497A (en) * 2016-08-30 2017-02-22 黄淮学院 Soil improvement method for garden plant plantation
CN106818280A (en) * 2017-01-19 2017-06-13 北京乾景园林股份有限公司 A kind of salt-soda soil arbor planting bed
CN107873160A (en) * 2017-11-09 2018-04-06 李宜卿 Saline-alkali soil improvement method, soil conditioner and preparation method thereof
CN111097790A (en) * 2019-12-24 2020-05-05 鞍钢集团矿业有限公司 Method for repairing saline-alkali soil by using salt discharge pipe, iron tailings and modifier

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106105451A (en) * 2016-07-15 2016-11-16 山东胜伟园林科技有限公司 A kind of alkaline land soil plate and maintaining method thereof
CN106337403A (en) * 2016-08-30 2017-01-18 山东胜伟园林科技有限公司 Burying method of water collecting tank
CN106416497A (en) * 2016-08-30 2017-02-22 黄淮学院 Soil improvement method for garden plant plantation
CN106376271A (en) * 2016-08-31 2017-02-08 杭州中艺生态环境工程有限公司 Method for continuously improving saline-alkali soil
CN106376270A (en) * 2016-08-31 2017-02-08 杭州中艺生态环境工程有限公司 Sustainably improved planting structure of saline and alkaline land
CN106818280A (en) * 2017-01-19 2017-06-13 北京乾景园林股份有限公司 A kind of salt-soda soil arbor planting bed
CN107873160A (en) * 2017-11-09 2018-04-06 李宜卿 Saline-alkali soil improvement method, soil conditioner and preparation method thereof
CN111097790A (en) * 2019-12-24 2020-05-05 鞍钢集团矿业有限公司 Method for repairing saline-alkali soil by using salt discharge pipe, iron tailings and modifier

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Application publication date: 20151216

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