AU2020103948A4 - Method for transplanting trees and afforestation in saline-alkali land - Google Patents
Method for transplanting trees and afforestation in saline-alkali land Download PDFInfo
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- AU2020103948A4 AU2020103948A4 AU2020103948A AU2020103948A AU2020103948A4 AU 2020103948 A4 AU2020103948 A4 AU 2020103948A4 AU 2020103948 A AU2020103948 A AU 2020103948A AU 2020103948 A AU2020103948 A AU 2020103948A AU 2020103948 A4 AU2020103948 A4 AU 2020103948A4
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- alkali land
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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
- A01G23/02—Transplanting, uprooting, felling or delimbing trees
- A01G23/04—Transplanting trees; Devices for grasping the root ball, e.g. stump forceps; Wrappings or packages for transporting trees
-
- 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
- A01G13/00—Protecting plants
- A01G2013/008—Protecting plants using straw
-
- 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
-
- 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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- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Forests & Forestry (AREA)
- Environmental Sciences (AREA)
- Cultivation Of Plants (AREA)
Abstract
The invention provides a method for transplanting trees and afforestation in saline-alkali land,
belonging to the field of saline-alkali land reclamation. The method for transplanting trees in
saline-alkali land is that after reclaiming saline-alkali land by using soil amendment, excavating
a tree planting pit and laying padding at the bottom of the planting pit. Then a protective soil
layer is laid on the padding. Finally, transplanting trees. This method can effectively control
the return of saline alkali soil, improve the physical and chemical properties of soil, and
improve the survival rate of transplanting in saline alkali soil. An afforestation method of
saline-alkali land, which utilizes the above method to transplant trees on saline-alkali land, can
effectively reduce the afforestation cost and curb the degradation of regional ecosystem.
Description
Method for transplanting trees and afforestation in saline-alkali land
The invention relates to the field of saline-alkali land reclamation, specifically to a
method for transplanting trees and afforestation in saline-alkali land.
For the Yellow River Basin, the golden section of regional economic development in
Ningxia, at present, the problem of soil salinization is one of the most serious problems in
its forestry production. There are 835,000 acres of saline-alkali wasteland in ancient
irrigation area of Ningxia, and 2.219 million acres of land are affected by salinization.
The problem of soil salinization has seriously hindered the restoration of vegetation and
the improvement of ecological environment; therefore, it is urgent to seek effective
methods in the aspect of new technology to reclaim and utilize saline alkali land.
Because of the special soil environment in saline-alkali land, it is necessary to take
possible measures to control soil salinization, reclaim soil physical and chemical
properties, and reduce groundwater level, so as to improve the survival rate of
transplanting. However, the existing method of transplanting vegetation by importing soil
to press alkali cannot well improve the soil, as well as result in low survival rate of
transplanted vegetation and high afforestation cost.
The first purpose of the present invention is to provide a method for transplanting trees in
saline-alkali land, which can effectively control the soil returning to saline-alkali land, improve the physical and chemical properties of soil, and improve the survival rate of transplanting in saline-alkali land.
The second object of the present invention is to provide an afforestation method for
saline-alkali land, which utilizes the above method to transplant trees, which can
effectively reduce the cost of afforestation and curb the degradation of regional
ecosystem.
In order to achieve the above purpose of the present invention, the following technical
scheme is adopted.
A method for transplanting trees in saline-alkali land is comprised of following steps.
After reclaiming saline-alkali land by using soil amendment, excavating a tree planting
pit and laying bedding at the bottom of the planting pit. Then a protective soil layer is laid
on the bedding. Finally, transplanting trees.
A method for afforestation in saline-alkali land adopts the above transplanting method.
Compared with the prior art, the invention has following beneficial effects.
The method for transplanting trees in saline-alkali land provided by the invention
comprises the following steps.
Firstly, reclaiming the saline-alkali land by using soil amendment to reduce the soil pH
value and total salt content of the saline-alkali land; besides, laying padding at the bottom
of the tree planting pit, which can effectively cut off the soil capillary and prevent the soil
from returning to saline alkali. The protective soil layer is laid on the padding to isolate
the tree root system from the padding, so as to prevent the tree root system from burning out. Transplanting with this method can effectively control the saline-alkali return of saline-alkali soil, improve the physical and chemical properties of soil, and significantly improve the transplanting survival rate of trees in saline-alkali soil.
The afforestation method in saline-alkali land provided by the invention can improve the
transplanting survival rate of trees and reduce the afforestation cost, so as to realize the
rapid recovery of the fragile ecological environment in the west.
The embodiments of the present invention will be described in detail with embodiments
below, but those skilled in the art will understand that the following embodiments are
only used to illustrate the present invention and should not be regarded as limiting the
scope of the present invention. If the specific conditions are not indicated in the
embodiment, the conventional conditions or the conditions suggested by the manufacturer
shall be followed. The used reagents or instruments without indicating the manufacturer
are conventional products that can be obtained through commercial purchase.
The embodiment provides a method for transplanting trees in saline-alkali land, which
comprises the following steps.
Si. Adopting soil amendment to reclaim the saline-alkali land
Existing soil amendment can be selected as soil amendment of saline-alkali land, such as
coal-fired flue gas desulfurization waste, which can change the soil aggregate structure
and help reduce the alkalinity of soil.
In the preferred embodiment of the present invention, the soil amendment is obtained by
mixing 0.8-1.8 parts by weight of coal-fired flue gas desulfurization waste and 0.4-1.0
parts by weight of plant-derived acidic industrial waste. This soil amendment can
improve soil porosity, increase soil nutrients, and enhance the biological activity of soil
enzymes by using these two kinds of wastes, thereby effectively improving the physical
and chemical properties of saline-alkali soil, reducing the pH value of the soil, decreasing
the content of soluble salt in the soil, and declining the alkalization degree of the soil,
thus being more suitable for tree growth.
Furthermore, coal-fired flue gas desulfurization waste is industrial waste prepared by the
limestone-gypsum wet flue gas desulfurization process, which is beneficial to obtain
coal-fired flue gas desulfurization waste with better performance. Alternatively, the
gypsum content in coal-fired flue gas desulfurization waste is not less than 80wt%,
preferably 80-85wt%; the water content is not higher than 12%. The main chemical
component of gypsum is CaSO 4 , which can react with sodium salts (sodium carbonate
and sodium bicarbonate) in saline-alkali soil to generate Na2SO 4 . After calcium ion
replaces sodium ion, on the one hand, calcium colloid and organic-inorganic complex can
be formed, and then the soil aggregate structure is changed and the soil permeability is
improved; on the other hand, it can reduce the alkalinity of soil, thus eliminating the
toxicity of sodium ions to crops.
Furthermore, plant-derived acidic industrial wastes refer to pollutants-free wastes
produced in the industrial processing with plant materials as raw materials, such as
furfural residue, vinegar residue and distiller's grains. The pH value of this kind of acidic
industrial waste from plants is 2-4, which can hydrolyse with soil ions, thus reducing the pH value of soil. Optionally, acidic industrial wastes include but are not limited to at least one of furfural residue, vinegar residue and distiller's grains. Furfural residue is the waste produced in the hydrolysis of biomass, which has high salt content and acidity. Moreover, it contains a lot of cellulose, hemicellulose and lignin, which can improve alkaline soil.
Vinegar grains and distiller's grains are the residual residues of grain crops after vinegar
brewing or wine making, which contain a large amount of vinegar protein, crude fibre,
etc., as well as are rich trace elements and microorganisms, being beneficial to reclaiming
alkaline soil.
Furthermore, the consumption of coal-fired flue gas desulfurization waste and acidic
industrial waste can be determined according to the pH value of saline-alkali soil or the
alkalization degree of saline-alkali soil. After years of theoretical and practical research,
the inventor found that selectively adjusting the consumption of coal-fired flue gas
desulfurization waste and acid industrial waste according to different pH values or
alkalization degrees of saline-alkali soil can improve the soil reclamation effect of saline
alkali soil.
When the pH value of saline-alkali soil is greater than 9, or when the alkalization degree
of saline-alkali soil is greater than 25%, the consumption of coal-fired flue gas
desulfurization waste is 1.6-1.8 tons/acre, and the consumption of acidic industrial waste
is 0.8-1.0 tons/acre.
When the pH value of saline-alkali soil is 8-9, or when the alkalization degree of saline
alkali soil is 16-25%, the consumption of coal-fired flue gas desulfurization waste is 1.2
1.6 tons/acre, and the consumption of acidic industrial waste is 0.6-0.8 tons/acre.
When the pH value of saline-alkali soil is 7-8, or when the alkalization degree of saline
alkali soil is less than 16%, the consumption of coal-fired flue gas desulfurization waste
is 0.8-1.0 tons/acre, and the consumption of acidic industrial waste is 0.4-0.6 tons/acre.
The adopted method for improving saline-alkali soil comprises the following steps.
Mixing 75-85wt% of the soil amendment with saline-alkali soil under 17-23 cm of the
land surface by an evenly application method; then digging pits at intervals on the saline
alkali land and mixing the remaining 15-25wt% of the soil amendment with the dug
saline-alkali land soil; then backfilling the pits and irrigating the saline-alkali land with an
irrigation amount of 280-320m 3/acre.
The evenly application method is spread 75-85wt% of soil amendment on the surface of
saline-alkali land, then mix the soil amendment with saline-alkali land soil under 17-23
cm of the land surface, that is, ploughing after rotary tillage to fully mix it with soil under
17-23 cm of the land surface, preferably with soil with a depth of 20cm.
Pit application method needs to consider the amount of vegetation to be planted in the
future, for example, if small trees are to be planted, planting pits can be excavated in
saline-alkali land according to the number of planted trees per unit area, and then the
remaining 15-25wt% of soil amendment is evenly distributed in proportion, which is
mixed with saline-alkali soil excavated form each pit, and then backfilled in the pits.
Using this pit method can enhance local soil pertinently, facilitate planting or
transplanting vegetation such as small trees in the later period, improve the survival rate
of vegetation, and gradually promote the present situation of saline-alkali land.
Irrigation of saline-alkali land is beneficial to desalination and alkali reduction of saline
alkali soil. It is preferable to use flood irrigation with the irrigation amount of
300m3/acre. After flood irrigation and soaking, agricultural measures such as harrowing
and levelling the ground are adopted to protect soil moisture, delay water evaporation and
prevent salt in underground water from being brought to the surface with water vapor
evaporation.
S2. Excavating a tree planting pit and laying padding at the bottom of the planting pit.
Then a protective soil layer is laid on the padding. Finally, transplanting trees.
Before transplanting trees in saline-alkali land, it is important to remove sundries, prepare
land, backfill low-lying part and level the ground. When levelling soil, if possible, laser
levelling instrument can be used to make the height difference of the same field do not
exceed 5cm.
According to the principle of improving first and then transplanting, it is better to plant
trees in saline-alkali land in spring (from mid-March to late April) and autumn (from late
October to early November). Afforestation should be done early in spring, and planting
can be done after soil thawing.
Optionally, the transplanted seedlings are strong and improved varieties without diseases
and insect pests. In addition, moderately cutting and trimming branches, retaining soil
balls as much as possible, wrapping them with straw ropes, and keeping seedlings with a
certain humidity during transportation. Trying to choose local seedlings and transport
them in a short distance. Seedlings shall be soaked in water for more than 24 hours before
being transported to planting sites.
The size of the tree planting pit is determined according to the DBH (diameter at breast
height) of the seedlings to be transplanted, as shown in Table 1.
Table 1 Specifications of different nursery stock planting pits
DBH (cm) Specifications of planting pits (cm xcm xcm)
3-4 60x60x80
5-6 80x80x100
7-8 lOOxlOOx120
Alternatively, the place where the tree planting pit is excavated is the local place treated
by pit application method, that is, after digging several tree planting pits with
corresponding specifications and sizes on the saline-alkali land, the remaining 15-25wt%
of the soil amendment is evenly distributed in proportion, which is mixed with the saline
alkali soil excavated from each pit, and then backfilled in the pit waiting for irrigation.
After a period of time, the above-mentioned tree planting pit is dug for tree transplanting.
This way can further improve the soil environment around the tree planting pit and make
it more conducive to the growth of tree roots.
Laying padding at the bottom of the tree planting pit, wherein the thickness of the
padding is 8-12 cm, preferably 10cm. The bedding material comprises at least one of rice
grass, straw, gravel, yellow sand and furnace ash slag, which can help to cut off the
capillary of the soil, thus preventing the soil from returning to salt.
The protective soil layer is laid on the padding, and then the trees are transplanted, so that
the roots of the trees do not directly contact the padding, which is beneficial to protect the
roots of the trees and prevent them from being burned out. Alternatively, if the pH value of saline-alkali land is between 7 and 9, the original soil can be used as the protective soil layer, and the high-quality soil with better physical and chemical properties can also be used as the protective soil layer; if the pH value of saline-alkali land is higher than 9, it is a heavy saline-alkali land. High-quality soil with better physical and chemical properties is better to be used as protective soil layer, which can promote the rooting and germination of transplanted seedlings.
Further, the trees should be fully watered within 2-4 days, preferably within 2 days. After
irrigation, it can be replenished in time according to soil moisture. Irrigation should be
done in time after transplanting, so as to keep the soil moist which can promote the root
germination, and effectively avoid the dry and necrosis of seedling roots due to lack of
water.
Furthermore, after the tree is transplanted, encircling the tree trunk and covering it with
water-retaining materials, so as to preserve the soil moisture around the tree stem,
promote the seedling root system activity and improve the seedling survival rate.
Optionally, the water-retaining material is a film and/or a straw curtain; alternatively, the
water-retaining material is black film, which has better heat preservation effect.
The afforestation method in the invention includes above method of transplanting trees in
saline-alkali land. The tree can be one or more of Salix matsudana, Ulmus pumila,
Ailanthus altissima, Populus alba var. pyramidalis, Populus euphratica, Sophora
japonica and Elaeagnus angustifolia.
Further, the method also includes trenching for draining in the saline-alkali land during
afforestation, so that the groundwater level in the saline-alkali land is reduced to 1.8-
2.5m. In the concrete implementation process, a drainage ditch with a depth of 0.8-1.2m
and a width of 1.0-1.4m can be dug at one side of the forest belt, and one drainage ditch
is usually dug every 18-22m. This measure can effectively reduce the groundwater level
and improve the survival rate of tree transplanting in saline-alkali land.
Furthermore, after transplanting seedlings in a large area, it repairs to make a ridge
surround the trunk and level the land timely.
Within 1-3 years after transplanting, irrigation will be used in the spring to inhibit the
salinization of soil to ensure the growth of seedlings; weeding and scarifying in time after
early spring, rainfall and irrigation, once or twice a year. At ordinary times, we should
also strengthen the shaping and pruning of the crown and the prevention and control of
diseases and insect pests.
The afforestation method of saline-alkali land provided by the embodiment is beneficial
to improving the transplanting survival rate of trees, reducing the cost of afforestation and
rapidly restoring the degraded ecosystem.
The following describes the characteristics and performance of the invention in further
detail combined with embodiments.
Embodiment 1
The embodiment provides a method for transplanting trees in saline-alkali land, which
comprises the following steps.
A. The waste of coal-fired flue gas desulfurization is mixed with saline-alkali soil under
17cm of ground by horizontal application method, and then the saline-alkali soil is
irrigated with an irrigation amount of 290m3/acre.
B. Excavating a tree planting pit and laying padding with 8cm of straw at the bottom of
the planting pit. Then a protective soil layer is laid on the padding. Finally, transplanting
trees.
Transplanting seedlings in the middle part of saline-alkali land with above method. The
survival rate of seedlings reaches 81% one year later.
Embodiment 2
The embodiment provides a method for transplanting trees in saline-alkali land with pH
value less than 8, which comprises the following steps.
A. Saline-alkali soil amendment is mixed with saline-alkali soil of 20cm below ground by
horizontal application method, and then the saline-alkali soil is irrigated with an irrigation
amount of 280m3/acre. Wherein, the saline alkali soil amendment is obtained by mixing
0.8 weight parts of coal-fired flue gas desulfurization waste and 0.4 weight parts of
furfural residue.
B. Excavating a tree planting pit and laying padding with 10cm of straw at the bottom of
the planting pit. Then a protective soil layer is laid on the padding. Finally, transplanting
trees.
Transplanting seedlings in the middle part of saline-alkali land with above method. The
survival rate of seedlings reaches 85% one year later.
Embodiment 3
The embodiment provides a method for transplanting trees in saline-alkali land with pH
value less than 8, which comprises the following steps.
A. 85wt% of saline-alkali soil amendment is mixed with saline-alkali soil of 30cm below
ground by horizontal application method. Wherein, the saline alkali soil amendment is
obtained by mixing 0.8 weight parts of coal-fired flue gas desulfurization waste and 0.4
weight parts of furfural residue.
Then, digging tree planting pits on saline-alkali land according to the requirements of tree
planting density, evenly distributing the remaining 15wtoof soil amendment and mixing
it with saline-alkali soil dug from each pit, and backfilling them in the pits. Then
irrigating the saline-alkali land with the irrigation amount of 280m 3/acre.
B. Excavating a tree planting pit and laying padding with 10cm of straw at the bottom of
the planting pit. Then a protective soil layer is laid on the padding. Finally, transplanting
trees.
Transplanting seedlings in the middle part of saline-alkali land with above method. The
survival rate of seedlings reaches 87% one year later.
Embodiment 4
The embodiment provides a method for transplanting trees in saline-alkali land with pH
value between 8 and 9, which comprises the following steps.
A. Saline-alkali soil amendment is mixed with saline-alkali soil of 21cm below ground by
horizontal application method. Wherein, the saline alkali soil amendment is obtained by mixing 1.3 weight parts of coal-fired flue gas desulfurization waste and 0.7 weight parts of furfural residue.
Then, digging tree planting pits on saline-alkali land according to the requirements of tree
planting density, evenly distributing the remaining 15wt%of soil amendment and mixing
it with saline-alkali soil dug from each pit, and backfilling them in the pits. Then
irrigating the saline-alkali land with the irrigation amount of 280m 3/acre.
B. Excavating a tree planting pit and laying padding with 10cm of gravels at the bottom
of the planting pit. Then a protective soil layer is laid on the padding. Finally,
transplanting trees. The water is irrigated well within 4 days after transplanting.
Transplanting seedlings in the middle part of saline-alkali land with above method. The
survival rate of seedlings reaches 82% one year later.
Embodiment 5
The embodiment provides a method for transplanting trees in saline-alkali land with pH
value of greater than 9, which comprises the following steps.
A. Saline-alkali soil amendment is mixed with saline-alkali soil of 23cm below ground by
horizontal application method. Wherein, the saline alkali soil amendment is obtained by
mixing 1.8 weight parts of coal-fired flue gas desulfurization waste and 1.0 weight parts
of furfural residue.
Then, digging tree planting pits on saline-alkali land according to the requirements of tree
planting density, evenly distributing the remaining 15wtoof soil amendment and mixing it with saline-alkali soil dug from each pit, and backfilling them in the pits. Then irrigating the saline-alkali land with the irrigation amount of 280m 3/acre.
B. Excavating a tree planting pit and laying padding with 10cm of yellow sand at the
bottom of the planting pit. Then a protective soil layer is laid on the padding. Finally,
transplanting trees. In 2 days after transplanting, the water is fully irrigated. After
irrigation, around the trunk, a ridge should be timely made and covered with black film.
Transplanting seedlings in the middle part of saline-alkali land with above method. The
survival rate of seedlings reaches 81% one year later.
Embodiment 6
The embodiment provides a method for transplanting small trees in saline-alkali land
with pH value of greater than 9, which comprises the following steps.
A. Saline-alkali soil amendment is mixed with saline-alkali soil of 20cm below ground by
horizontal application method. Wherein, the saline alkali soil amendment is obtained by
mixing 1.6 weight parts of coal-fired flue gas desulfurization waste and 8.0 weight parts
of furfural residue.
Then, digging tree planting pits on saline-alkali land according to the requirements of tree
planting density, evenly distributing the remaining 15wtoof soil amendment and mixing
it with saline-alkali soil dug from each pit, and backfilling them in the pits. Then
irrigating the saline-alkali land with the irrigation amount of 280m 3/acre.
B. Excavating a tree planting pit and laying padding with 10cm of furnace slag at the
bottom of the planting pit. Then high-quality soil is laid as a protective soil layer on the padding. Finally, transplanting trees. In 3 days after transplanting, the water is fully irrigated. After irrigation, around the trunk, a ridge should be timely made and covered with black film.
Transplanting seedlings in the middle part of saline-alkali land with above method. The
survival rate of seedlings reaches 83% one year later.
Embodiment 7
The embodiment provides a method for afforestation in saline-alkali land, wherein the pH
of the saline-alkali land is greater than 9, and the method includes the method in the
embodiment 6, and further comprises following steps.
In the process of afforestation, a drainage ditch with a depth of 1.Om and a width of 1.2m
is dug on one side of the transplanted forest belt, and one drainage ditch is usually dug
every 20m, so that the groundwater level in saline-alkali land is reduced to below 1.8m..
After one year, adopting above method, the average total salt, pH and alkalization degree
in saline-alkali soil decreased to 2.9%o, 8.1 and 24.52% respectively. In addition, the
survival rate of seedlings is as high as 88%, the preservation rate reaches 70%, and the
vegetation coverage reaches more than 40%. Moreover, the cost of reclaiming 1 acre of
soil by using this method is 330 yuan, which is 1,470 yuan less than the traditional
method of pressing alkali with imported soil.
To sum up, the method for transplanting trees in saline-alkali land provided by the
invention can effectively control the saline-alkali return of saline-alkali soil, improve the
physical and chemical properties of soil, and significantly improve the transplanting
survival rate of trees in saline-alkali land. The method of transplanting trees in saline- alkali land for afforestation can significantly improve the survival rate and preservation rate of transplanted trees in saline-alkali land, reduce the cost of afforestation, and quickly restore the ecological system in western fragile areas.
Although the invention has been illustrated and described with specific embodiments, it
should be appreciated that many other changes and modifications can be made without
departing from the spirit and scope of the invention. Therefore, it is meant that all such
changes and modifications shall fall within the scope of the present invention included in
the appended claims.
Claims (10)
1. A method for transplanting trees in saline-alkali land, characterized by comprising
following steps.
After reclaiming saline-alkali land by using soil amendment, excavating a tree planting
pit and laying bedding at the bottom of the planting pit. Then a protective soil layer is laid
on the bedding. Finally, transplanting trees.
2. The method for transplanting trees in saline-alkali land according to claim 1,
characterized in that the soil amendment is obtained by mixing 0.8-1.8 parts by weight of
coal-fired flue gas desulfurization waste and 0.4-1.0 parts by weight of plant-derived
acidic industrial waste.
3. The method for transplanting trees in saline-alkali land according to claim 2,
characterized in that the plant-derived acidic industrial waste comprises at least one of
furfural residue, vinegar residue and distiller's grains.
4. The method for transplanting trees in saline-alkali land according to claim 2,
characterized in that the method for reclaiming the saline-alkali land by using soil
amendment comprising following steps.
Mixing 75-85wt% of the soil amendment with saline-alkali soil under 17-23 cm of the
land surface by an evenly application method; then digging pits at intervals on the saline
alkali land and mixing the remaining 15-25wt% of the soil amendment with the dug
saline-alkali land soil; then backfilling the pits and irrigating the saline-alkali land with an
irrigation amount of 280-320 m3/acre.
5. The method for transplanting trees in saline-alkali land according to any one of claims
1 to 4, characterized in that the method further requires to irrigate enough water within 2
to 4 days after transplanting the trees.
6. The method for transplanting trees in saline-alkali land according to claim 5,
characterized in that the method further requires to make a ridge surrounding the stems of
the trees and covering them with water-retaining materials, after the trees are fully
irrigated with water.
7. The method for transplanting trees in saline-alkali land according to claim 1,
characterized in that the padding further comprises at least one of rice straw, straw stalk,
gravel, yellow sand and furnace ash slag.
8. A method for afforestation in saline-alkali land, characterized in that the transplanting
method according to claims 1 to 9 is used for afforestation in saline-alkali land.
9. The afforestation method of saline-alkali land according to claim 8, characterized in
that it further comprises trenching for draining in the saline-alkali land.
10. The afforestation method of saline-alkali land according to claim 9, characterized in
that the saline-alkali land is trenched for draining to reduce the groundwater level of the
saline-alkali land to 1.8-2.5m.
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| AU2020103948A AU2020103948A4 (en) | 2020-12-08 | 2020-12-08 | Method for transplanting trees and afforestation in saline-alkali land |
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| AU2020103948A Ceased AU2020103948A4 (en) | 2020-12-08 | 2020-12-08 | Method for transplanting trees and afforestation in saline-alkali land |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113728866A (en) * | 2021-09-28 | 2021-12-03 | 广州市雅玥园林工程有限公司 | Method for improving survival rate of landscape garden plants in saline-alkali soil |
| CN113728867A (en) * | 2021-09-28 | 2021-12-03 | 广州市雅玥园林工程有限公司 | Method for improving survival rate of landscape garden nursery stocks |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113728866A (en) * | 2021-09-28 | 2021-12-03 | 广州市雅玥园林工程有限公司 | Method for improving survival rate of landscape garden plants in saline-alkali soil |
| CN113728867A (en) * | 2021-09-28 | 2021-12-03 | 广州市雅玥园林工程有限公司 | Method for improving survival rate of landscape garden nursery stocks |
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