CN101743882B - Drip irrigation greening forestation method for saline-alkali land in coastal areas - Google Patents
Drip irrigation greening forestation method for saline-alkali land in coastal areas Download PDFInfo
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- CN101743882B CN101743882B CN2009102639254A CN200910263925A CN101743882B CN 101743882 B CN101743882 B CN 101743882B CN 2009102639254 A CN2009102639254 A CN 2009102639254A CN 200910263925 A CN200910263925 A CN 200910263925A CN 101743882 B CN101743882 B CN 101743882B
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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
- Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion
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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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Abstract
The invention provides a drip irrigation greening forestation method for saline-alkali land in a coastal area, which comprises the following steps of: A, paving a filtering layer, namely, paving the filtering layer at a position 40 to 80cm distance below the ground and filling original soil on the filtering layer; B, leveling the land and ridging when shrubs and arbors are planted; C, selecting and planting trees or grass seeds; D, arranging a drip irrigation tape, namely, arranging the single drip irrigation tape in the middle of tree planting ridge, or paving the drip irrigation tape at intervals of 30 to 100cm on a lawn; and E, irrigating, namely, irrigating for the first time once planting on the same day and then irrigating according to the actual moisture condition of the soil, wherein the irrigation quantity is more than four times the daily irrigation quantity. The invention adopts a method combining ground drip irrigation with filtering layer pavement so as to form a desalting region in a plant root region and ensure the regular growth of plants. The method solves the problem that the soil structure is damaged after the saline-alkali land with high content of sodium ions is washed, so the method can keep the good soil structure of the soil and provide a good growing environment for the plants.
Description
Technical field
The present invention relates to a kind of drip irrigation greening forestation method for saline-alkali land in coastal areas, belong to the saline land and administer and the planting technology field.
Background technology
The beach saline land original soil is a beach salt marsh mud, upper soll layer salt content height not only, and heart subsoil salt content is also very high, soil is grouped into consistent with seawater with underground water salt, sodium chloride salt has comparative advantage, and the soil sodium adsorption ratio is very high, and the soil texture is sticking heavily, structure is poor, gas permeability is bad, soil moisture is in a single day saturated, soil compaction, soil permeability reduction, the bad situation of air capacity of soils then occur.Coastal saline-alkali soil nutrient condition is poor, and microbial status is poor.Osmotic potential with soil reduces the water uptake by plant roots difficulty.Have a strong impact on plant growing, cause dunsiekte, the plant nutrition imbalance.
Present existing beach saline land afforestation technology mainly comprises methods such as " gravel separation layer+soil moved in to improve the original ", " hidden pipe is lined up+fresh water pressure alkali+soil moved in to improve the original ", " raised fields pouring alkali ", obtained certain effect, yet the very high or a large amount of waste water resources of these method costs, it is big to promote difficulty.On the other hand, owing to be subjected to the restriction of shortage of fresh water, soil layer is thin in addition, nutrient is not enough or root system is affected after pricking down and salinity such as coerces at reason, trees grow up slow, mostly be little old man tree, a lot of flowers shrubs to the just undergrowth after 3 years needs to upgrade.Exist greening difficult, more difficult problem is managed and protected and kept to the later stage.
Summary of the invention
The object of the present invention is to provide the method for a kind of beach saline land drip irrigation afforestation, this method is fully used the characteristics of drip irrigation drip washing salinity, and in conjunction with filtering layer pavement, by long-time, high-frequency ground drip irrigation, make the plant roots district keep higher water content, and moisture constantly reaches diffuse underneath to all around, simultaneously, filtering layer can be so that ooze smooth and easy under the soil moisture, can cut off capillary water again, stop salinity to rise, suppress the soil accumulation of salt in the surface soil, guarantee that the plant roots district becomes a desalination district, make the plant can normal growth.
Technical scheme of the present invention is achieved in that this drip irrigation greening forestation method for saline-alkali land in coastal areas, and its feature comprises the steps:
A, filtering layer pavement: in distance ground 40-80cm degree of depth filtering layer pavement, the thick 20cm of filtering layer, its middle and lower part is that the thick particle diameter of 15cm is the stone of 3-5cm, covering particle diameter on it is the fine sand of 0.2-0.4cm, fills out original soil on the filtering layer;
B, whole ground: the soil is carried out smooth, ridging when planting shrub and arbor;
The selection of C, tree or grass seeds and planting: the kind of tree or grass is selected the seeds of salt tolerant alkali for use, and shrub is selected native ball seedling, and root need be handled with root-inducing powder before the naked-root planting, and plant spring;
D, drip irrigation zone setting: intermediate arrangement wall scroll irrigate band on trees plantation ridge; Or an irrigate band is laid every 30-100cm in the lawn;
E, irrigation: pour water first at once after planting the same day, irrigation quantity is more than four times of daily irrigation quantity, pours water later then and determines according to the actual water regime of soil.
Described drip irrigation greening forestation method for saline-alkali land in coastal areas, the described filtering layer of steps A is applicable to the area that subterranean water level is more shallow.
Described drip irrigation greening forestation method for saline-alkali land in coastal areas, the described ridging of step B, its specification determines according to the seeds of planting, supporting corresponding pumping equipment simultaneously guarantees that excessive precipitation can in time discharge.
Described drip irrigation greening forestation method for saline-alkali land in coastal areas, the described irrigation of step e also comprise dissolved fertilizer is dissolved in the irrigation water and apply fertilizer with water.
Described drip irrigation greening forestation method for saline-alkali land in coastal areas, step D is described in every capable drip irrigation zone setting, and turf is laid an irrigate band, dripper spacing 20-60cm every 60cm.
Described drip irrigation greening forestation method for saline-alkali land in coastal areas, the described daily irrigation quantity of step e adopts depressimeter to monitor, and just pours water when depressimeter reaches control soil water potential value-5kPa-10kPa, and 5mm pours water at every turn.
The present invention adopts the method for ground drip irrigation in conjunction with filtering layer pavement, makes the plant roots district form the desalination district, guarantees the normal growth of plant.Solved the problem that soil structure is destroyed after the high saline-alkali soil drip washing of sodium ions content, in the drip washing salinity, can keep the good soil structure of soil, for plant provides good growing environment.Simultaneously can utilize liquid fertilizer to carry out accurate fertilizer irrigation, improve utilization rate of fertilizer.The present invention is practical, does not need soil moved in to improve the original, and cost is low, and fitting operation is simple, and management maintenance is simple, be easy to promote, and be the effective ways of beach saline land afforestation.Utilization the present invention carries out experiment and demonstration at beach saline land, selects flowers, lawn and the trees of salt tolerant alkali to plant, and survival rate significantly improves to more than 90% and well-grown, has obtained ecology and economic benefit preferably, has broad application prospects.
Description of drawings
Fig. 1 is that schematic diagram is laid in filtering layer of the present invention and irrigate band
Mark is as follows among the figure:
1, irrigate band 2, plantation ridge 3, backfill original soil 4, filtering layer 5, original soil 6, underground water
Embodiment
Adopt 2008-2009 of the present invention on experiment and demonstration base, huge port, Inst of Geographic Science and Resources, Chiense Academy of Sciences Tianjin, to carry out experiment and demonstration, prove that effect of the present invention is remarkable.
Experiment and demonstration base, huge port, Inst of Geographic Science and Resources, Chiense Academy of Sciences Tianjin is positioned at West St alliance village, Dagang District port, Tianjin, and the saline land, this area is the same with the saline land of other coastal region of China, is development directly takes place on beach salt marsh mud.Not only the upper soll layer salification is heavy with the solonchak area heavy salinizedly for it, and heart subsoil salt content is also very high, and is close with original salt marsh mud.Simultaneously, because bury of groundwater shallow and phreatic water in this area's is for becoming water, high salinity underground water is accumulated in upper layer of soil with strong native face evaporation.Because soil is consistent with seawater with underground water salinity chemical composition, sodium chloride salt has comparative advantage, the soil sodium adsorption ratio is very high, add and be formed at salt marsh mud, cause that the soil texture is sticking heavy, structure is poor, gas permeability is bad, except the extremely strong minority halophytes of salt resistance, conventional crops, lawn, flowers, tree and shrubs etc. all can not be grown.
2008-2009 has laid turf experimental field adopting method for planting of the present invention to plant Chinese rose, the rose of Sharon, prunus cerasifera, glossy privet, Chinese littleleaf box.
1, filtering layer pavement at first, filtering layer is in the underground 40cm degree of depth, and filtering layer 20cm is thick, and its middle and lower part is that the thick particle diameter of 15cm is the stone of 3-5cm, in order to prevent that the top soil percolation to big stone layer, is covered with the fine sand that the 5cm particle diameter is 2-4mm on the rubble sublayer
2, backfill original soil on the filtering layer, ridging plantation Chinese rose, the rose of Sharon, prunus cerasifera, glossy privet, Chinese littleleaf box etc., turf is laid in smooth back;
3, drip irrigation zone setting between every capable ridge, turf is laid an irrigate band, dripper spacing 20cm, 40cm or 60cm every 60cm
4, pour water first at once after planting the same day, irrigation quantity is more than 4 times of irrigating water quota of design, is used for the salinity of washed out soil and provides enough moisture for the wetted perimeter of expectation; Pour water later on and determine according to the actual water regime of soil, water regime adopts depressimeter to monitor, and just pours water when depressimeter reaches control soil water potential value-5kPa-10kPa, and 5mm pours water at every turn.
Regularly the trees of planting management, pruning have been carried out.
, plant and promptly received good effect then in the application of experimental field going up by the present invention, various plant survival rates have all reached more than 90%, and well-grown.
Experiment showed, that the present invention is equally applicable to other trees the planting of heavy salinized ground, therefore, method for planting of the present invention is with a wide range of applications.
Listed examples of the present invention is intended to further illustrate drip irrigation greening forestation method for saline-alkali land in coastal areas of the present invention, and scope of the present invention is not constituted any restriction.
Claims (3)
1. drip irrigation greening forestation method for saline-alkali land in coastal areas is characterized in that following steps:
A, filtering layer pavement: in distance ground 40-80cm degree of depth filtering layer pavement, the thick 20cm of filtering layer, its middle and lower part is that the thick particle diameter of 15cm is the stone of 3-5cm, covering particle diameter on it is the fine sand of 0.2-0.4cm, fills out original soil on the filtering layer;
B, whole ground: the soil is carried out smooth, ridging when planting shrub and arbor;
The selection of C, tree or grass seeds and planting: the kind of tree or grass is selected the seeds or the grass seeds of salt tolerant alkali for use, and shrub is selected native ball seedling, and root need be handled with root-inducing powder before the naked-root planting, and plant spring;
D, drip irrigation zone setting: intermediate arrangement wall scroll irrigate band on trees plantation ridge; Or an irrigate band is laid every 30-100cm in the lawn; Dripper spacing 20-60cm;
E, irrigation: after planting the same day, pour water first at once, irrigation quantity is more than four times of daily irrigation quantity, pour water then and determine according to the actual water regime of soil, daily irrigation quantity adopts depressimeter to monitor, when reaching control soil water potential value-5kPa～10kPa, depressimeter just pours water, the 5mm that at every turn pours water is dissolved in dissolved fertilizer in the irrigation water and applies fertilizer with water.
2. drip irrigation greening forestation method for saline-alkali land in coastal areas according to claim 1 is characterized in that: the described filtering layer of steps A is applicable to the area that subterranean water level is more shallow.
3. drip irrigation greening forestation method for saline-alkali land in coastal areas according to claim 1 is characterized in that: the described ridging of step B, its specification determine according to the seeds of planting, and supporting corresponding pumping equipment simultaneously guarantees that excessive precipitation can in time discharge.
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| CN2009102639254A CN101743882B (en) | 2009-12-29 | 2009-12-29 | Drip irrigation greening forestation method for saline-alkali land in coastal areas |
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| CN101743882B true CN101743882B (en) | 2011-07-27 |
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| RU2782954C2 (en) * | 2019-07-01 | 2022-11-07 | Федеральный научный центр агроэкологии, комплексных мелиораций и защитного лесоразведения Российской академии наук | Method for creating forest crops on waterlogged sandy lands |
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