CN109258332A - A kind of method of arid-desert area large area after-culture soil seed bank, soil seed pool - Google Patents
A kind of method of arid-desert area large area after-culture soil seed bank, soil seed pool Download PDFInfo
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- CN109258332A CN109258332A CN201811168765.0A CN201811168765A CN109258332A CN 109258332 A CN109258332 A CN 109258332A CN 201811168765 A CN201811168765 A CN 201811168765A CN 109258332 A CN109258332 A CN 109258332A
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G23/00—Forestry
Abstract
The present invention relates to a kind of methods of arid-desert area large area after-culture soil seed bank, soil seed pool, this method utilizes soil seed bank, soil seed pool existing for locality, by effectively transplanting existing soil seed bank, soil seed pool soil layer in the non-aeolian sandy soil region of baldness, certain pouring is implemented to the soil seed bank, soil seed pool soil layer newly transplanted in autumn, cooked maize bar is generated in surface layer uniform fold current year again, the next autumn, after removing the cornstalk dried, it transplants one layer of new soil with identical soil seed bank, soil seed pool again on the soil newly transplanted, implement to pour and covers two layers of new cornstalk.Transplanting condition is to require building to give shade wetland environment and select colder weather, it is more advantageous to the effective docking for the soil and initial soil newly transplanted and merges, be conducive to that soil seed bank, soil seed pool quarters on initial soil and continuous 2 years are greatly improved soil seed bank, soil seed pool field planting efficiency in the transplanting that soil seed bank, soil seed pool is implemented in same place, realize and achieve the purpose that large area after-culture soil seed bank, soil seed pool in arid-desert area.
Description
Technical field
The present invention relates to arid-desert area Vegetation Restoration of Degraded Ecosystem reconstruction technique fields, and in particular to arid desert
The method of area's large area after-culture soil seed bank, soil seed pool.
Background technique
Desertification is the land deterioration of arid, semiarid and sub- wet arid area, and mankind's activity and climate change are to lead
Cause the immediate cause of desertification.The population in the world 1/5 faces the threat of desertification, and the area of global desertification of land is with averagely every
The area in year 3.4% is increasing.The land area that Asia is influenced by desertification is maximum, close to 1,400,000,000 m2, arid region 71%
Soil has occurred and that moderate and serious desertification.The area of arid, the semiarid and sub- wet arid region of China accounts for national territorial area
38.3%.It is estimated that the land area of DESERTIFICATION IN CHINA accounts for the 15.4% of national territorial area, and among being continuously increased, disappear
Except the threat of desertification is the task of top priority.In China, arid, semiarid Desert Regions are located in continent innerland more, belong to typical continent
Type arid climate, precipitation is few, and potential evaporation amount is big, and soil development is faint, and ermophyte type is few and cover degree is low, entire ecology
Vulnerable environment and vulnerable to disturbance.This method chooses the Lower Reaches of Tarim River, Xinjiang for being located at arid region in northwest China and Kongquehe downstream
Area is specific case study region.It has it is resourceful with the extremely fragile double grading of ecological environment, it is rare in area
Deserta resists hazards of sand storms to the ecology, production and the living safety that maintain the whole district, maintains whole distract environment and resource
Sustainable use and development play considerable effect.However in recent decades, using water resources development and utilization as core
Big intensity human economy, social activities disturbance under, ecological environment is increasingly degenerated, especially under Lower Reaches of Tarim and Kongquehe
Trip area, riveway dry-up, lake is dry, and level of ground water sharp fall, the deserta based on Populus Euphratica decays comprehensively,
Desertification Process and eolian erosion aggravation, desertification area expand, and bio-diversity is badly damaged, and floating dust, sandstorm etc. are disastrous
Weather has seriously affected that the regional economy is normal, stablizes, sustainable development.Tarim River basin and the Peacock River Basin are tight
High Ecological and environmental problems cause the extensive concern of country and local government, in investing energetically and local government for country
It actively advocates down, ecological emergency conveyance and basin Introduction of The Comprehensive Regulating Works is implemented to Lower Reaches of Tarim and Kongquehe downstream, it is right
Contain that the environmental degradation in the region plays important function, ecological recovery significant effect.But only according to linearly along channel water delivery measure
Carry out large area and restore deserta group with certain limitation, is difficult to obtain from river water away from the farther away region in river
Benefit, it is difficult to rapidly update by itself succession and restore.It is present in Desert Regions upper soll layer and soil active seed institute
The soil seed bank, soil seed pool of composition is the material base of area's interplantation species group Yu community regeneration and recovery, is potential plant population or group
It falls.Soil seed bank, soil seed pool can remember the history of Vegetation community, have the dual function for influencing vegetation developing direction.And away from
From the farther away vegetation sparse in river or the region of baldness, due to vegetation rareness, the accumulation of soil seed bank, soil seed pool long-term lacking provenance, soil
There is a serious shortage in the supply for middle provenance, even if water supply, is also unfavorable for the recovery and update of surface vegetation.For this purpose, increasing provenance hand by artificial mend
Section promotes new transplanting soil seed bank, soil seed pool in the field planting and fusion of original baldness earth's surface, reaches in conjunction with the building of moist water conservation environment
To the purpose of Desert Regions after-culture soil seed bank, soil seed pool.
In terms of the degenerated vegetation Ecological recovery technology research and development of arid-desert area, there is scholar for soil under extremely low rainfall
Due to a lack of suitable sprouting condition, more difficult the characteristics of sprouting naturally, research and development propose large area activation soil to seed in seed bank
The method of seed bank, i.e., by limited water resources such as the ecological waters let out using recovery district brackish water and under flood season, in main advantage
Kind Seed Rain, which spreads the phase and carries out artificial diversion in soil seed bank, soil seed pool majority seed sprouting season, to overflow, and combination is floated kind of a measure and manually mended
Provenance is filled, to realize the large area activation of soil seed bank, soil seed pool.In addition, there are also scholars to be directed to Desert Regions group constructive species diversiform-leaved poplar and Gui
Willow etc., the method for proposing manual reversion Chinese tamarisk and diversiform-leaved poplar self-maintenance capability utilize the hydrotropism of Chinese tamarisk and diversiform-leaved poplar root system development
And its feed-back regulatory mechanism that part vegetation root system is formed by the induction to arid, increase manual reversion Chinese tamarisk and diversiform-leaved poplar pair
The acquisition capability of moisture, while its adaptability to arid is improved, reach and promotes arid-desert area manual reversion Chinese tamarisk and Hu
The purpose that poplar entirety self-maintenance capability is promoted, the reversal evolvement after avoiding artificial ancillary measure from cancelling.These previous technical methods,
The recovery for carrying out existing surface vegetation for original intrinsic plant or seed bank updates or activates existing soil seed bank, soil seed pool, into
And realize effective recovery of degraded ecosystem.Some scholars propose, serious for extreme degenerate region and soil seed bank, soil seed pool storage capacity
The section of atrophy, if conditions permit can be perfect from vegetational type, species diversity is high and soil seed bank, soil seed pool storage capacity is abundant
Section carries out topsoil transplanting, to realize " donations " of soil seed bank, soil seed pool.But the technical method is not introduced in depth.
Arid-desert area under natural conditions, since long-term precipitation is rare, dry, lead to that vegetation is poor, coverage is very low, very
Exposed to the earth's surface for large area occur, no seed is in soil.Therefore, it how by artificial beneficial disturbance measure, rationally moves
It plants local existing seed bank and promotes the effective fixed of soil seed bank, soil seed pool by artificially creating the environment of moist water conservation in exposed earth's surface
The problem of planting, being those skilled in the art's urgent need to resolve.
Summary of the invention
The object of the present invention is to provide a kind of methods of arid-desert area large area after-culture soil seed bank, soil seed pool, improve soil species
Word bank is colonized efficiency.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of method of arid-desert area large area after-culture soil seed bank, soil seed pool, comprising the following steps:
(1) soil seed bank, soil seed pool soil layer is selected in arid-desert area, when tree and shrubs distribution area is greater than in earth surface area
Herbaceous plant distribution area selects soil within the scope of the earth's surface 500m of the region alternately tree and shrubs soil seed bank, soil seed pool；
When herbaceous plant distribution area is greater than tree and shrubs distribution area, select soil within the scope of the earth's surface 500m of the region as
Alternative draft soil seed bank, soil seed pool, the sampled point of soil seed bank, soil seed pool soil is chosen using sample plot method, takes earth's surface in each sampled point
Soil layer soil transports the non-aeolian sandy soil region far from river, earth's surface baldness or vegetation rareness, is 5-20 DEG C in temperature on average
Autumn end is equably broadcasted sowing, and beats the low bank of earth between fields in the edges of regions of new after-culture soil seed bank, soil seed pool soil layer；
(2) after the completion of First Year autumn implementing to broadcast sowing, the region of new after-culture soil seed bank, soil seed pool is carried out immediately disposable
Sprinkling irrigation, the 2-5 days after sprinkling irrigation, two layers of current year of covering generates ripe complete cornstalk；
(3) the next autumn, after removing the cornstalk dried, the area of the new after-culture soil seed bank, soil seed pool described in step (2)
The soil of one layer of identical seed bank of uniform broadcasting again on the soil layer in domain, repairs original low bank of earth between fields, and carry out one to it at once
Secondary property sprinkling irrigation, the 2-5 days after sprinkling irrigation, two layers of current year of covering generates ripe complete cornstalk.
In the step (1), the arbor be diversiform-leaved poplar, shrub be one or both of Tamarix ramosissima and Tamarix hispida,
Herbaceous plant is one or more of black thorn, small bell thorn, camel thorn, bluish dogbane, Radix Glycyrrhizae and reed.
In the step (1), non-aeolian sandy soil region is Populus Euphratica soil, meadow brown soil, marshy soil, salt soil, cracking
Any one of soil.
In the step (1), take surface soil layer soil in sampled point, surface soil layer is with a thickness of 1-15cm.
In the step (1) and step (3), soil seed bank, soil seed pool soil is equably broadcasted sowing, is covered on ground after broadcasting sowing
The new soil thickness in face is 18-22cm.
In the step (1), the low bank of earth between fields, a height of 28-32cm of the low bank of earth between fields are beaten in the edges of regions of new after-culture soil seed bank, soil seed pool.
In the step (2) and step (3), disposably sprayed to the region of new after-culture soil seed bank, soil seed pool, sprinkling irrigation amount
For the side 200-300/mu.Implement certain pouring to the soil seed bank, soil seed pool newly transplanted, then in two layers of cornstalk of Surface mulch, to subtract
Few soil moisture is scattered and disappeared.
In the step (2) and step (3), two layers of current year of the covering generates ripe complete cornstalk, adjacent two bar it
Between be separated by 20cm.
Two layers of current year of the covering generates ripe complete cornstalk, is separated by 20cm's between adjacent two bar method particularly includes:
The plot of after-culture soil seed bank, soil seed pool irregular for one, in the longitudinal direction, with phase between adjacent two bar since ground block edge
One layer of current year, which is equably covered, every the distance of 20cm generates ripe complete cornstalk；Again horizontally, equally, from ground, block edge is opened
Beginning, equably in the upper surface of longitudinal cornstalk, laterally one layer of current year of covering is generated again to be separated by the distance of 20cm between adjacent two bar
Ripe complete cornstalk can cover short cornstalk in massif marginarium domain, cover two layers of cornstalk in a crisscross manner both in this way
Partially surface area is covered, existing gap promotes ground surface soil vapor interface steam, air and energy again between cornstalk
Deng exchange, be conducive to the building of moist retaining soil moisture environment.
The invention has the benefit that the next autumn, after removing the cornstalk dried, is moved again on the soil newly transplanted
One layer of new soil with identical soil seed bank, soil seed pool is planted, then, covers two layers of new cornstalk.Colder weather adds corn
The evaporation for substantially reducing soil moisture is scattered and disappeared in the covering of bar, be conducive to the soil newly transplanted and initial soil effectively dock and
Fusion, is conducive to soil seed bank, soil seed pool and quarters on initial soil.
Cornstalk is thick and long, also has gap appropriate between bar and bar with leaf, is conducive to ground steam and energy is handed over
It changes.The shape of maturation zone leaf current year raw cornstalk and gap are very suitable to for covering the soil seed bank, soil seed pool earth's surface newly transplanted, from
And construct moist water conservation environment.
In season on cool autumn days, by transplanting existing soil seed bank, soil seed pool in exposed earth's surface, and irrigation is given in time and cornstalk covers
Gai Hou, the feature lower using autumn air temperature, soil evaporation is weaker reduce soil water evaporation loss, so that transplanting soil species
The holding thermal environment of soil energy long period after word bank, conducive to soil seed bank, soil seed pool new earth's surface field planting and fusion,
Environment-guarantee is provided for seed sprouting, implements within continuous 2 years the benefit and increases measure, realize in arid-desert area after-culture soil seed
The purpose in library.
The present invention chooses soil seed bank, soil seed pool sampled point using sample plot method: in selected soil seed base area, as shown in Fig. 2,
Selecting long and width is 50m, area 2500m2Square area, four square turnings are as seed bank soil sample
Point, each edge (1) are sampled by interval of 10m, and 4 sides take 16 pedotheques altogether, then, connect two opposite side with rope
Sample point, connection while (2) with it is main while (1) it is parallel, need 8 ropes altogether, this 8 ropes in a crisscross manner again occur 16 phases
Intersection point, this 16 crosspoints are also used as soil sample point, totally 36 sample points.In this 36 sample points, it is being with radius respectively
In the range of the circle (3) of 3m, takes earth's surface 1-15cm soil layer soil, be quickly charged in polybag, in time tie up mouth, and transport
To the non-aeolian sandy soil region for the earth's surface baldness for needing after-culture soil seed bank, soil seed pool.
The method of a kind of arid-desert area large area after-culture soil seed bank, soil seed pool of the present invention, in arid-desert area Qiao
The upper soll layer preservation in the region of wood, shrub and draft raised growth, which has largely, has vital vegetable seeds, still, is planting
By especially sparse or region without vegetative coverage, then soil seed bank, soil seed pool is seriously deficient, does not have artificial acceleration revegetation, increases
The condition of ground mulching degree.Using arid biogeographic zone autumn and winter temperature, relatively low, non-aeolian sandy soil evaporates relatively weak spy to this method
Point by transplanting existing local soil seed bank, soil seed pool on the non-aeolian sandy soil of baldness, and implements irrigations of disposably overflowing, irrigates use
Water is about the side 200-300/mu, then, covers two layers of mature current year raw cornstalk in a crisscross manner to mitigate soil evaporation,
The next autumn implements same seed bank again on the existing soil seed bank, soil seed pool being transplanted and mends increasing measure to ensure soil seed
Library the region effective field planting, and with local soil effective integration.
Present invention utilizes the degenerated vegetation groups contained in the area existing seed bank Fu Ji of arid-desert area to restore update
Potential species basis, lower by means of autumn and winter temperature, non-aeolian sandy soil evaporates weaker feature, by effectively transplanting existing locality
Soil seed bank, soil seed pool is on the exposed non-aeolian sandy soil of baldness, and in conjunction with the method irrigated and cover cornstalk, arteface humidity is retained
Soil environment, promote effective field planting of soil seed bank, soil seed pool.
Compared with the spontaneous recovery for activating existing seed bank to realize the Desert Regions ecosystem by water supply merely, by reasonable
Existing seed bank is transplanted on the non-aeolian sandy soil of baldness, can more effectively expand the range and storage capacity of seed bank, promotes kind
Sub- large area is sprouted, and is accelerated effective field planting and recovery without vegetation area plant, is improved deserta cover degree, accelerate ecology of degenerating
The During Process of Ecological Restoration of system.
Detailed description of the invention
Fig. 1 cornstalk covers schematic diagram；
Fig. 2 soil seed bank, soil seed pool Samples selecting schematic diagram；
Fig. 3 implements the Lower Reaches of Tarim typical section location drawing of the invention；
Fig. 4 implements the Kongquehe downstream typical section location drawing of the invention.
Specific embodiment
Embodiment 1
By taking Xinjiang, China Lower Reaches of Tarim Pu Ahab horse sweat and Ying Su section as an example, implement the method for the present invention.Ahab Pu
Horse sweat section has typical herbosa, and English Soviet Union section has typical tree and shrubs group.Implement regional location of the invention
Figure is as shown in Figure 3.
The selection of soil seed bank, soil seed pool:
In Pu Ahab horse sweat and Ying Su section, widely distributed diversiform-leaved poplar, Radix Glycyrrhizae, spends colored bavin, camel thorn, white thorn, reed at Chinese tamarisk
The plants such as reed, bluish dogbane.However, according to investigations, in Pu's Ahab horse sweat section, Radix Glycyrrhizae spends the herbaceous plant such as colored bavin, camel thorn to account for institute
There is the specific gravity of plant species up to 94%, diversiform-leaved poplar and Chinese tamarisk account for 6%；It revives section in English, diversiform-leaved poplar and Chinese tamarisk account for the specific gravity of all plant species
Up to 84%, other herbaceous plant account for 16%.Still select Pu Ahab horse sweat section herbaceous plant to be largely distributed region ground
The earth's surface 1- in the region that table 1-15cm soil layer soil is largely distributed as herbaceous plant seeds library, English Soviet Union section tree and shrubs
15cm soil layer soil is as tree and shrubs plant species word bank.
Soil seed bank, soil seed pool acquisition method:
Autumn respectively randomly chooses the plot of 5 50m × 50m in Pu's Ahab horse sweat section and Ying Su section, with lining rope and
Rope respectively impales the four edges (1) in this 5 plot, and 4 angles are as sampled point；Each edge (1) using 10m as interval reconnaissance,
Each edge selects 4 points, and 4 sides totally 16 points, this 16 points are as sampled point；4 point phases of 4 points of each edge and opposite side
Even, after connection while (2) with it is main while (1) it is parallel, 8 sides intersection, 16 intersection points of composition, this 16 intersection point also conducts in the plot
Sampled point.Each plot 36 sampled points in total, as shown in Fig. 2, 5 180, plot sampled points.
In each sampled point, centered on intersection point, radius is in circle (3) range of 3m, with spade earth's surface 1-
15cm soil layer soil ties up plastic bag mouth in polybag, and rapidly.It is drawn with vehicle to the region for needing after-culture soil seed bank, soil seed pool.
The selection in after-culture area:
After-culture area selects to make far from river, earth's surface baldness or the very sparse any region based on non-aeolian sandy soil of vegetation
For soil seed bank, soil seed pool after-culture area.The region area is not fixed, and is determined with actual conditions.
Soil seed bank, soil seed pool broadcasts sowing:
It is lower than 20 DEG C of autumn Mo in Average day temperature, by the related seed of soil in polybag, together equably
It is sown in the region for needing after-culture seed bank, broadcasts sowing thickness about 20cm, is beaten at the edge in the region for broadcasting sowing soil seed bank, soil seed pool high about
The low bank of earth between fields of 30cm beats the low bank of earth between fields of high about 50cm on initial soil layer, implement convenient for soil seed bank, soil seed pool of the later period to new after-culture
After irrigation, irrigation water will not random cross flow.
The construction of humidity water conservation environment:
In the soil seed base area of new after-culture, water is drawn disposably to be sprayed with vehicle, irrigation volume about 200 sides/mu irrigate
It second day afterwards, with the maturation raw cornstalk of complete current year after harvest, is equably covered with being separated by the distance of 20cm between adjacent two bar
Cover the soil seed base area in new after-culture, 2 layers of criss-cross covering.Sufficiently by non-aeolian sandy soil water body leakage intensity compared with
The characteristic of soil water evaporation can be effectively relieved in weak, covering cornstalk, in autumn and winter, to the soil seed base area structure of new after-culture
The environment of moist water conservation is made, is merged conducive to soil seed in effective field planting in new region and height, really realizes soil seed
The after-culture in library.
The next autumn repeats the after-culture experiment of soil seed bank, soil seed pool in the region of new after-culture seed bank:
The next autumn randomly chooses plot selected by non-upper one year in Pu Ahab horse sweat and Ying Su section and carries out soil seed
The sampling in library, Samples selecting method, the method for sampling, the method for sowing of soil seed bank, soil seed pool and humidity are retained the building method of environment
Ibid 1 year.Continuous 2 years in this way carry out soil seed bank, soil seed pool after-culture experiment, it can be achieved that soil seed bank, soil seed pool effective after-culture, effectively
After-culture rate can reach 40%-70%.
Embodiment 2
By taking three dam of Xinjiang, China Kongquehe downstream, 34 woods pipe stations and 35 these three sections of military camp as an example, implement this
Inventive method.Three dams and 34 woods pipe station sections have typical tree and shrubs group, and 35 military camp sections have typical grass
This group.It is as shown in Figure 4 to implement regional location figure of the invention.
The selection of soil seed bank, soil seed pool:
In Kongquehe downstream Desert Riparian Forest, widely distributed diversiform-leaved poplar, Chinese tamarisk, Radix Glycyrrhizae, salsola collina, Herba Salsolae Ruthenicae and caspian halostachys
Equal plants.However, according to investigations, on three dams and 34 woods pipe station sections, the specific gravity that diversiform-leaved poplar and Chinese tamarisk account for all plant species reaches
95%, herbaceous plant only accounts for 5%；In 35 military camp sections, herbaceous plant accounts for the specific gravity of all plant species up to 60%, diversiform-leaved poplar and Gui
Willow accounts for 40%.Still select three dams and 34 woods pipe station section tree and shrubs plants to be largely distributed region earth's surface 1-
The region that 15cm soil layer soil is largely distributed as tree and shrubs plant soil seed bank, 35 military camp section herbaceous plant
Earth's surface 1-15cm soil layer soil is as herbaceous plant soil seed bank, soil seed pool.
Soil seed bank, soil seed pool acquisition method:
Autumn respectively randomly chooses the plot of 5 50m × 50m, with lining rope and rope on three dams and 34 woods pipe station sections
Son respectively impales the four edges (1) in this 5 plot, and 4 angles are as sampled point；Each edge (1) is using 10m as interval reconnaissance, often
4 points are selected on side, and 4 sides totally 16 points, this 16 points are as sampled point；4 points of each edge are connected with 4 points of opposite side,
After connection while (2) with it is main while (1) it is parallel, the intersection of 8 sides constitutes 16 intersection points in the plot, this 16 intersection points are also as sampling
Point.Each plot 36 sampled points in total, as shown in Fig. 2, 5 180, plot sampled points.
In each sampled point, centered on intersection point, radius is in circle (3) range of 3m, with spade earth's surface 1-
15cm soil layer soil ties up plastic bag mouth in polybag, and rapidly.It is drawn with vehicle to the region for needing after-culture soil seed bank, soil seed pool.
The selection in after-culture area:
Kongquehe downstream soil types mainly has solonchak, meadow soil and aeolian sandy soil.After-culture area select far from river, mass color
The very sparse any region based on non-aeolian sandy soil of bald or vegetation is as soil seed bank, soil seed pool after-culture area.The region area is not solid
It is fixed, determined with actual conditions.
Soil seed bank, soil seed pool broadcasts sowing:
It is lower than 20 DEG C of autumn Mo in Average day temperature, by the related seed of soil in polybag, together equably
It is sown in the region for needing after-culture seed bank, broadcasts sowing thickness about 20cm, is beaten at the edge in the region for broadcasting sowing soil seed bank, soil seed pool high about
The low bank of earth between fields of 30cm beats the low bank of earth between fields of high about 50cm on initial soil layer, implement convenient for soil seed bank, soil seed pool of the later period to new after-culture
After irrigation, irrigation water will not random cross flow.
The construction of humidity water conservation environment:
In the soil seed base area of new after-culture, water is drawn disposably to be sprayed with vehicle, irrigation volume about 300 sides/mu irrigate
Second day afterwards, with the maturation raw cornstalk of complete current year after harvest, the soil seed reservoir area of new after-culture is covered on the interval 20cm
Domain, two layers of criss-cross covering.Sufficiently by non-aeolian sandy soil water body leakage intensity, soil can be effectively relieved in weaker, covering cornstalk
The characteristic of earth moisture evaporation is conducive to soil to the environment that the soil seed bank, soil seed pool regional structure humidity of new after-culture is retained in autumn and winter
Seed is merged in effective field planting in new region and height, really realizes the after-culture of soil seed bank, soil seed pool.
The next autumn repeats the after-culture experiment of soil seed bank, soil seed pool in the region of new after-culture seed bank:
The next autumn randomly chooses plot selected by non-upper one year in San Daoba, 34 woods pipe stations and 35 military camp sections
Carry out the sampling of soil seed bank, soil seed pool, Samples selecting method, the method for sampling, the method for sowing of soil seed bank, soil seed pool and humidity water conservation ring
The building method in border is same as above 1 year.The after-culture experiment of soil seed bank, soil seed pool so continuous 2 years is carried out, it can be achieved that soil seed bank, soil seed pool
Effective after-culture, effective after-culture rate can achieve 40%-70%.
Claims (8)
1. a kind of method of arid-desert area large area after-culture soil seed bank, soil seed pool, which comprises the following steps:
(1) soil seed bank, soil seed pool soil layer is selected in arid-desert area, when tree and shrubs distribution area is greater than draft in earth surface area
Plant distributions area selects soil within the scope of the earth's surface 500m of the region alternately tree and shrubs soil seed bank, soil seed pool；Work as grass
When this plant distributions area is greater than tree and shrubs distribution area, soil within the scope of the earth's surface 500m of the region is selected alternately
Draft soil seed bank, soil seed pool is chosen the sampled point of soil seed bank, soil seed pool soil using standard site method, takes earth's surface in each sampled point
Soil layer soil transports the non-aeolian sandy soil region far from river, earth's surface baldness or vegetation rareness, is 5-20 DEG C in temperature on average
Autumn end is equably broadcasted sowing, and beats the low bank of earth between fields in the edges of regions of new after-culture soil seed bank, soil seed pool soil layer；
(2) it after the completion of First Year autumn implementing to broadcast sowing, is disposably sprayed to the region of new after-culture soil seed bank, soil seed pool immediately,
The 2-5 days after sprinkling irrigation, covering two layers of current year in length and breadth generates ripe complete cornstalk；
(3) the next autumn, after removing the cornstalk dried, the region of the new after-culture soil seed bank, soil seed pool described in step (2)
The soil of one layer of identical seed bank of uniform broadcasting again on soil layer, repairs original low bank of earth between fields, and carry out disposably to it at once
Sprinkling irrigation, the 2-5 days after sprinkling irrigation, covering two layers of current year in length and breadth generates ripe complete cornstalk.
2. a kind of method of arid-desert area large area after-culture soil seed bank, soil seed pool according to claim 1, which is characterized in that institute
It states in step (1), the arbor in the soil seed bank, soil seed pool is diversiform-leaved poplar, and shrub is one of Tamarix ramosissima and Tamarix hispida or two
Kind, herbaceous plant is one or more of black thorn, small bell thorn, camel thorn, bluish dogbane, Radix Glycyrrhizae and reed.
3. a kind of method of arid-desert area large area after-culture soil seed bank, soil seed pool according to claim 1, which is characterized in that institute
It states in step (1), non-aeolian sandy soil region is Populus Euphratica soil, meadow brown soil, marshy soil, salt soil, is cracked appointing in soil
It is a kind of.
4. a kind of method of arid-desert area large area after-culture soil seed bank, soil seed pool according to claim 1, which is characterized in that institute
It states in step (1), takes surface soil layer soil in sampled point, surface soil layer is with a thickness of 1-15cm.
5. a kind of method of arid-desert area large area after-culture soil seed bank, soil seed pool according to claim 1, which is characterized in that institute
It states in step (1) and step (3), soil seed bank, soil seed pool soil is equably broadcasted sowing, the new soil that ground is covered on after broadcasting sowing is thick
Degree is 18-22cm.
6. a kind of method of arid-desert area large area after-culture soil seed bank, soil seed pool according to claim 1, which is characterized in that institute
It states in step (1), beats the low bank of earth between fields, a height of 28-32cm of the low bank of earth between fields in the edges of regions of new after-culture soil seed bank, soil seed pool.
7. a kind of method of arid-desert area large area after-culture soil seed bank, soil seed pool according to claim 1, which is characterized in that institute
It states in step (2) and step (3), is disposably sprayed to the region of new after-culture soil seed bank, soil seed pool, sprinkling irrigation amount is 200-300
Side/mu.
8. a kind of method of arid-desert area large area after-culture soil seed bank, soil seed pool according to claim 1, which is characterized in that institute
It states in step (2) and step (3), two layers of current year of the covering generates ripe complete cornstalk, is separated by 20cm between adjacent two bar.
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| CN115530000A (en) * | 2022-11-09 | 2022-12-30 | 中铁十二局集团第四工程有限公司 | Method for slope greening in high and cold areas by using underground seed bank |
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