CN108391480A - A kind of method of arid-desert area rejected reasons quick recovering vegetation - Google Patents

Abstract

The invention discloses a method for quickly recovering the vegetation of returned cultivated land in arid desert area, which is characterized in that it comprises the following steps: screening the reforestation land according to the soil type of the returned farmland; selecting the time for reforestation of the returned farmland; selecting afforestation plants; ; Afforestation method of returned farmland; Seedling management and protection of returned farmland for afforestation. The invention can improve the precipitation utilization efficiency of the returned farmland in the arid desert area, improve the survival rate of afforestation, rapidly increase the vegetation coverage of the afforestation land, effectively prevent soil wind erosion, and is suitable for the restoration of the vegetation of the returned farmland in the arid and semi-arid desert area. The vegetation restoration method It can increase vegetation coverage in a short period of time, and has very light operability and practical value. It has broad development prospects in the utilization and protection of converted farmland in arid desert areas. This vegetation restoration method is mainly based on local native plants. Appropriate Supplemented by sparse planting, the restoration needs of vegetation diversity are realized.

Description

A method for rapid restoration of vegetation on converted farmland in arid desert areas

Technical field:

The invention belongs to the technical field of ecological restoration in arid desert areas, and in particular relates to a method for rapid restoration of vegetation in arid desert areas.

Background technique:

Retired/abandoned cultivated land refers to the land that withdraws or abandons sloping cultivated land with serious soil erosion or low productivity, desertified and ecologically important cultivated land. For nearly half a century, due to population increase, climate change, and people's overexploitation and utilization of natural resources, the groundwater level has continued to decline, lakes have dried up, and the ecological environment has deteriorated. Large areas of land have been abandoned or converted due to severe desertification. Minqin is located in the lower reaches of the Shiyang River Basin. Due to the low exploitation of groundwater, the vegetation has seriously declined, and the damage caused by wind and sand has intensified. A large area of farmland has been implemented in Minqin, with the main content of shutting down wells and reducing land area. Minqin presents a large area of farmland. The cultivated land area of Minqin County administrative statistics is 4×104hm ² . It can be seen that the retreat/ The area of abandoned farmland is huge. After the land is returned to farmland, there is no irrigation, and the shelter forest is dead. The converted farmland is becoming a new source of sandstorms, which seriously threatens the survival and development of oases, and also becomes a new source of sandstorms.

Invention content:

The technical problem to be solved by the present invention is: to provide a kind of method of promoting vegetation recovery and reducing wind and sand hazards by artificial ditching and afforestation in arid desert areas, using deep ditch to build seedlings with ecological and economic benefits, selecting local native plants, and Appropriate sparse planting, free of irrigation after one year of planting, can obtain certain economic benefits while quickly restoring the vegetation of the degraded land.

In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

A method for rapid restoration of vegetation on converted farmland in arid desert areas, comprising the following steps:

Step A) Screen the afforestation land according to the soil type of the returned farmland: select a reasonable afforestation land according to the soil type of the returned farmland. In the arid desert area, the area where the vegetation is restored through artificial afforestation should choose gray-brown desert soil with deep soil layer or ash with clay in the lower layer. Brown desert land plots are used as afforestation land, and it is not suitable to choose plots with excessive sand content and sand leakage;

Step B) Select the afforestation time of the returned farmland: the seedlings for afforestation planting include container seedlings and bare-root seedlings, container seedlings are selected for afforestation in spring (April-May) and autumn (September-October), and bare-root seedlings are all in spring Afforestation before germination;

Step C) select plant for plantation: the tree species for plantation selection will be carried out according to the principle of solid trees on the spot;

Step D) Land preparation and ditching of returned farmland: remove the crop stalks on the returned farmland, level the land, and open deep ditches;

Step E) method for afforestation of returned farmland:

e1): Shallow irrigation, due to the lack of soil moisture in the converted farmland, the soil is hard, and shallow irrigation is performed once before afforestation, and the planting pit is opened after the water infiltrates;

e2): The size of the planting pit is determined according to the size of the seedlings;

When planting container seedlings, determine the row spacing and plant spacing. Before afforestation, the seedling nutrition bag should be removed, and then the seedlings with soil balls should be placed in the pit. The soil ball on the upper part of the container seedlings is lower than the planting pit. To straighten, and then water;

When planting bare-root seedlings, determine the depth of the planting pit and the custom-made row spacing, place the seedlings in the planting pit, step on them firmly, and then lift the seedlings to promote the root system of the seedlings to stretch, then bury the soil, step on the ground, and then irrigate after afforestation;

Step F) management and protection of seedlings in land for afforestation.

As preferably, in the step C), the principle of solid trees on the ground that afforestation tree species selection is based on is specifically,

c1): First of all, the native tree species with strong drought resistance should be selected as the preferred tree species for afforestation;

c2): Secondly, determine the tree species for afforestation according to the degree of soil salinization. On the land with heavy soil salinization, the main tree species for afforestation are Lycium barbarum, Tamarix multiflora, Lycium barbarum, Haloxylon, and Chinese ephedra, and the soil with light soil salinization The main afforestation tree species are holly, Nitraria, and flower sticks.

As a preference, in step D), the groove distance of the deep groove is 200cm, the groove depth is 40cm, and the groove width is 30cm.

As a preference, step F) the specific measures for the management and protection of seedlings in the land for afforestation are as follows: after afforestation, the management and protection measures are mainly irrigation and weeding, wherein the specific methods of irrigation are as follows, after the seedlings are planted, they are irrigated once every 15 to 20 days, and the irrigation should be shallow. For the irrigation method, the water surface should be 4cm to 5cm away from the border surface, so as to prevent the water from overflowing the border surface and cause weeds to grow. After July, reduce the number of irrigation, promote the lignification degree of seedlings, and enhance the resistance of seedlings, so as to facilitate the survival of seedlings. Irrigation can be stopped once or twice a year in summer, and the seedlings can grow using natural precipitation.

As preferably, step E) in the afforestation method of returning farmland:

When container seedlings are planted, the afforestation line spacing should be 2m, the plant spacing should be 1.5m-2m, and the soil ball at the top of the container seedlings should be 5cm-10cm lower than the planting pit;

When bare-rooted seedlings are used for afforestation, the depth of the planting pit is generally more than 40cm, and the custom-made plant row spacing is preferably 2m, and the bare-rooted seedlings are buried at 2/3 of the depth of the pit.

Compared with the prior art, the advantages of the present invention are: the present invention can improve the utilization efficiency of precipitation in the arid desert area, improve the survival rate of afforestation, rapidly increase the vegetation coverage of afforestation land, effectively prevent soil wind erosion, and is suitable for It is used in arid and semi-arid desert areas to restore the vegetation of returned farmland. This vegetation restoration method can increase the vegetation coverage in a short time, and has very light operability and practical value. It has broad application and protection in the use and protection of returned farmland in arid desert areas Development prospects, this vegetation restoration method is mainly based on local native plants, supplemented by appropriate sparse planting, to meet the restoration needs of vegetation diversity.

Description of drawings:

The present invention will be further described below in conjunction with the accompanying drawings.

Fig. 1 is a schematic diagram of the implementation steps of the method for rapid restoration of vegetation in arid desert areas of the present invention.

Detailed ways:

The present invention is described in detail below in conjunction with accompanying drawing and specific embodiment:

A method for rapid recovery of vegetation in arid desert areas as shown in Figure 1, comprising the following steps:

Step A) Screen the afforestation land according to the soil type of the returned farmland: select a reasonable afforestation land according to the soil type of the returned farmland. In the arid desert area, the area where the vegetation is restored through artificial afforestation should choose gray-brown desert soil with deep soil layer or ash with clay in the lower layer. The brown desert land is used as afforestation land, and there is a shortage of water in the arid desert area. On the premise of maximizing water retention and utilization, reduce the number of artificial irrigation and reduce the cost of afforestation; The water retention rate of such soil plots is poor, the survival rate of afforestation is low, and the seedling retention rate is poor;

Step B) Select the afforestation time of the returned farmland: the seedlings for afforestation planting include container seedlings and bare-root seedlings, container seedlings are selected for afforestation in spring (April-May) and autumn (September-October), and bare-root seedlings are all in spring Afforestation before germination;

Step C) select plant for plantation: the tree species for plantation selection will be carried out according to the principle of solid trees on the spot;

Step D) Land preparation and ditching of returned farmland: remove crop stalks on the returned farmland, such as corn stalks, sunflower stalks and other straws, and then level the land and open deep ditches. The main purpose of ditching is to facilitate watering in the early stage and to facilitate precipitation The collection and utilization of water can achieve the purpose of improving water use efficiency and making full use of precipitation;

Step E) method for afforestation of returned farmland:

e1): Shallow irrigation, due to the lack of soil moisture in the converted farmland, the soil is hard, and shallow irrigation is performed once before afforestation, and the planting pit is opened after the water infiltrates;

e2): The size of the planting pit is determined according to the size of the seedlings;

When planting container seedlings, determine the row spacing and plant spacing. Before afforestation, the seedling nutrition bag should be removed, and then the seedlings with soil balls should be placed in the pit. The soil ball on the upper part of the container seedlings is lower than the planting pit. To straighten, and then water;

When planting bare-root seedlings, determine the depth of the planting pit and the custom-made row spacing, place the seedlings in the planting pit, step on them firmly, and then lift the seedlings to promote the root system of the seedlings to stretch, then bury the soil, step on the ground, and then irrigate after afforestation;

Step F) management and protection of seedlings in land for afforestation.

Select the preferred tree species as the afforestation species, and in step C) the selection of the afforestation species is based on the principle of real trees on the spot is specifically,

c1): First of all, the native tree species with strong drought resistance should be selected as the preferred tree species for afforestation;

c2): Secondly, determine the tree species for afforestation according to the degree of soil salinization. On the land with heavy soil salinization, the main tree species for afforestation are Lycium barbarum, Tamarix multiflora, Lycium barbarum, Haloxylon, and Chinese ephedra, and the soil with light soil salinization The main afforestation tree species are holly, Nitraria, and flower sticks.

As the preferred setting size of the deep groove, the distance between the deep grooves in the step D) is 200cm, the depth of the groove is 40cm, and the width of the groove is 30cm.

Step F) The specific measures for the management and protection of seedlings in the reforestation land are as follows: after afforestation, the management and protection measures are mainly irrigation and weeding, and the specific methods of irrigation are as follows. After the seedlings are planted, watering is performed every 15 to 20 days, and shallow irrigation is used for irrigation. The water surface should be 4cm to 5cm away from the border surface to prevent the water from overflowing the border surface and cause weeds to grow. After July, reduce the number of irrigation, promote the degree of lignification of the seedlings, and enhance the resistance of the seedlings to facilitate the wintering of the seedlings. Irrigate in the summer of the second year Irrigation can be stopped after 1 or 2 times, and the seedlings can grow by using natural precipitation. During the growth of the seedlings, weeds are easy to breed, so weeding should be done in time to prevent weeds from competing with the seedlings for fertilizer and water, and promote the normal growth of the seedlings. In the second year, with the reduction of irrigation times, the growth of seedlings is vigorous, which further limits the growth of weeds, and weeding management is basically not carried out.

Step E) in the afforestation method of returned cultivated land, as the preferred planting method of container seedling cultivation and bare root seedling cultivation when afforestation:

When container seedlings are planted, the afforestation line spacing should be 2m, the plant spacing should be 1.5m-2m, and the soil ball at the top of the container seedlings should be 5cm-10cm lower than the planting pit;

When bare-rooted seedlings are used for afforestation, the depth of the planting pit is generally more than 40cm, and the custom-made plant row spacing is preferably 2m, and the bare-rooted seedlings are buried at 2/3 of the depth of the pit.

Example 1:

Afforestation by ditching container seedlings of holly holly in returned cultivated land

(1) Afforestation site selection, site preparation and ditching

Taking the implementation of the rapid restoration of vegetation in the Minqin Sand Control Station in the arid desert area in 2012 as an example, in the spring of 2012, the sandy gray palm with flat terrain, good drainage and sand was selected in the Minqin Sand Control Station area in the arid desert area. On the desert soil, the irrigated land is used as afforestation land, and the time for returning the farmland is 5 years. Use ditching equipment to ditch at a row spacing of 2m, with a ditch depth of 40cm and a width of 30cm, and then manually remove the virtual soil in the ditch.

(2) Select holly holly as afforestation seedlings

The survival rate of bare-root planting of Ilex japonica is almost 0, and the container seedlings are too large to easily damage the roots, and its survival rate is low. Therefore, the 1-year-old container seedlings of holly holly are selected as afforestation seedlings when afforestation on degraded land.

(3) Afforestation method

Use small water to shallowly irrigate once in the deep ditch that has been opened, and the fixed planting pit can be excavated after the water infiltrates. The size of the planting pit is determined by the nutrient bowl of the sand holly container seedling, which is slightly larger than the nutrient bowl, and a pit with a width of 20 cm and a depth of 20 cm is opened. The surface is slightly lower than the planting pit, then bury the soil, step on it, and water it.

(4) Afforestation time

Sand holly container afforestation can be afforested to avoid the high temperature season. Spring Festival afforestation is generally carried out between April and May, and autumn is generally carried out in October.

(5) Nursing management

Ilex is extremely resistant to drought, and requires very little water during the entire growth period, so water management is relatively strict. Too many times of irrigation can easily cause the root system of Ilex to rot and die. After the seedlings are planted, they can be irrigated, and the head water should be irrigated enough, but the water should not overflow the seedlings. After half a month, they should be irrigated again shallowly to promote the growth of the roots of the seedlings, and then reduce the number of irrigations. Irrigate once every 1 to 1.5 months. It is enough to irrigate winter water once, and irrigate once during the high temperature period of summer in the second year. After the root system grows fully, the irrigation can be stopped, and the seedlings can use natural precipitation to grow normally. After the seedlings are planted, weeds in the ditch are mainly removed, especially at the seedling stage, to prevent weeds from competing with the seedlings for fertilizer and water, and to promote the rapid growth of the seedlings. Sand holly is resistant to poor soil and can grow normally without fertilization during the growth period.

(6) Vegetation coverage and growth status

The survival rate of Sha Dongqing container afforestation reached over 86.2%. The preservation rate of the 5-year-old holly is still 77.56%, the average height growth has reached 66.6cm, the average crown width has reached 75.0cm×76.2cm, and the growth condition is good. The vegetation coverage of the returned farmland has reached more than 38%, which is 45.23% higher than that of the idle returned farmland. The plantation of Ilex japonica plantations on the returned farmland increases the diversity of vegetation species on the returned farmland, improves the vegetation coverage, and does not require artificial irrigation after the planting survives, effectively improving the ecological and economic benefits of the returned farmland.

Example 2:

Afforestation of Nitraria bare-root seedlings planted on returned farmland

Take the rapid restoration of the vegetation of the returned farmland in the Minqin Sand Control Station area in the arid desert area in 2014 as an example. The specific method is as follows:

(1) Afforestation site selection, site preparation and ditching

Nitraria is suitable for growing on quicksand and clay, and there are a wide range of afforestation sites, including various types of returned farmland. At the same time, it is required that the returned cultivated land should be flat, without a large number of plants such as Nitraria, tamarisk, and wolfberry without natural regeneration. Use a tractor to dig trenches with a depth of 30cm and a distance of 2m. After ditching, use a ditch opener to remove empty soil in the ditch, and in some places, remove it manually to facilitate the smooth passage of water during artificial irrigation.

(2) Seedling selection

The survival rate of Nitraria bare-root transplanting can be selected for 1 to 2-year-old bare-root seedlings for transplanting and afforestation. The height of 1-year-old seedlings is between 15-15cm, and the height of 2-year-old seedlings is between 25-35cm. The afforestation of large seedlings is highly competitive, which is not conducive to the growth of weeds. When afforestation of small seedlings, weeds tend to compete with them for water and fertilizer, and the management of seedling weeding is difficult.

(3) Afforestation time

Nitraria afforestation can be carried out before the emergence of Nitraria in spring or after the leaves fall in autumn. In the spring of 2014, afforestation was carried out in late April, using 1-year-old bare-root seedlings for afforestation. Also can afforestation in autumn, at the beginning of November in autumn, after Nitraria defoliation, can afforestation, Nitraria afforestation follows seedling afforestation.

(4) Afforestation method

Carry out ditching and afforestation in the ditch that has been opened on the returned farmland. If the soil is too dry and the land is hard, shallow irrigation should be performed once before afforestation. After 3 to 4 days, the ditch can be used for afforestation when the surface is not sticky to the feet. The size depends on the size of the seedlings, and the plant spacing is 2.2m. For seedlings with a height of 20cm, the ditching depth is about 25cm, and the length and width are both 20cm. Put the wood vertically in the pit, bury the soil to 2/3 of the depth of the pit, step on it, and then lift the seedlings to promote the stretching of the roots of the seedlings, and then Bury the soil, step on it, and irrigate after afforestation.

(5) Management after afforestation

In the early stage of Nitraria afforestation, the root system is not yet developed, and the water in the surface soil is easy to lose. In the early stage, special attention should be paid to irrigation. After the head water pipe is full, it should be irrigated once every 15-20 days according to the weather and temperature, and the irrigation should be irrigated 3 times continuously. Irrigate once, irrigate once before the soil is frozen, and then stop irrigation in the next year, open ditches for afforestation, which is beneficial to the collection and utilization of precipitation. In the early stage of growth, the seedlings are small and weeds are easy to breed. Weeds can be removed once a week after irrigation. After the seedlings grow up, the weeds are no longer competitive, and weeding can be stopped. After the second year, watering and weeding management are not required, and the seedlings can grow normally by relying on natural precipitation.

(6) Vegetation coverage and growth status

The survival rate of Nitraria bare-root afforestation reached over 92.6%. The preservation rate of the 3-year-old Nitraria was still 85.17%, the average height reached 66.6cm, the average crown width reached 75.0cm×76.2cm, and the growth condition was good. The vegetation coverage of the returned farmland has reached more than 38%, which is 45.23% higher than that of the idle returned farmland. The plantation of Nitraria plantations on the returned farmland increases the diversity of vegetation species on the returned farmland, improves the vegetation coverage, and does not require artificial irrigation after planting and survival, effectively improving the ecological and economic benefits of the returned farmland.

Example 3:

Afforestation of black-fruited wolfberry container seedlings on returned cultivated land

(1) Afforestation site selection, site preparation and ditching

Taking the implementation of rapid vegetation restoration of degraded farmland at the Minqin Sand Control Station in the arid desert area in 2012 as an example, in the spring of 2012, the Minqin Sand Control Station in the arid desert area was selected to be flat, well-drained, and irrigated. Cultivated land is used as afforestation land, mainly with sticky soil. Aeolian sand soil and sand leaking land should not be selected as afforestation land, and the time for returning farmland is 5 years. Use a tractor to dig a ditch with a row spacing of 2m, with a ditch depth of 40cm and a width of 30cm, and then manually remove the virtual soil in the ditch.

(2) Select black fruit wolfberry as afforestation seedlings

For afforestation of wolfberry black fruit, you can choose nutritious pot seedlings or bare root seedlings. The height is 15-20cm. The root system of container seedlings is complete, and the survival rate of afforestation is high. The afforestation of container seedlings and bare-root seedlings should follow the afforestation of the seedlings, and the afforestation is easy to survive.

(3) Afforestation time

Afforestation of container seedlings of Lycium barbarum can be carried out when avoiding the high temperature season. The survival rate of afforestation in April in spring and October in autumn is the highest, which can reach more than 96.2%. The survival rate of afforestation is relatively high.

(4) Afforestation method

On April 10, 2013, afforestation was carried out in the ditches opened on the returned farmland. If the soil is too dry and the land is hard, shallow irrigation should be performed once before afforestation. After 3 to 4 days, the ground will not stick to the feet. Ditching can be used for afforestation. The size of the pit depends on the size of the container seedlings. The height of the container is 18cm. The depth of the ditch is about 25cm, and the length and width are both 20cm. The top is slightly lower than the planting pit, then bury the soil and step on it with your feet.

(5) Management after afforestation

In the initial stage of afforestation of container seedlings of black fruit wolfberry, the seedlings are small, and weeds should be removed in time. Watering can be done after afforestation, and the root system is not yet developed in the early stage of afforestation, so it can be irrigated once every 20 days. Shallow irrigation is suitable for afforestation, and the number of irrigations should be reduced after July, just once before wintering, and once in June of the second year. It needs watering to grow normally. After 2 years of afforestation, it enters the full fruit period. If economic output is needed, the number of times of irrigation will be increased accordingly. If it is not necessary to irrigate once a year, it can grow normally.

(6) Vegetation coverage and growth status

The survival rate of container afforestation of black fruit medlar reached more than 98.5%. The preservation rate of 4-year-old Lycium barbarum is still 93.51%, the average height reaches 58.67cm, the average crown width reaches 69.7cm×62.6cm, and the growth condition is good. The vegetation coverage of returned farmland has reached more than 45.3%, which is 52.5% higher than that of idle returned farmland. The plantation of the black fruit Lycium barbarum plantation on the returned farmland has increased the diversity of vegetation species on the returned farmland, improved the vegetation coverage, and does not require artificial irrigation after the planting has survived, effectively improving the ecological and economic benefits of the returned farmland.

It should be emphasized that: the above are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention are valid. Still belong to the scope of the technical solution of the present invention.

Claims (5)

1. a kind of method of arid-desert area rejected reasons quick recovering vegetation, it is characterised in that：Include the following steps：

Step A) according to rejected reasons soil property type screening reproducing area：Rational reproducing area is selected according to rejected reasons soil property type, The greyish brown desert soil or lower layer that arid-desert area preferably selects soil layer deep by the region of artificial afforestration recovery vegetation have clay Greyish brown desert soil plot is as reproducing area, the plot that soil content should not be selected excessive and have leakage husky；

Step B) selection rejected reasons Afforestation Time：Afforestation plant nursery includes container nursery and naked nursery, container nursery choosing It selects and afforests in spring (4~May) and autumn (9~October), and naked nursery is afforested before spring does not sprout；

Step C) selection Silvicultural：Reproducting tree species selection will be carried out according to the principle set in fact on the spot；

Step D) rejected reasons site preparation and trench digging：Remove rejected reasons on crop material, by ground levelling, open zanjon；

Step E) rejected reasons method of forestation：

e1)：Light irrigation, due to rejected reasons Different Soil Water Deficits, soil property is hard, and light irrigation is primary before afforestation, after Infiltration again Carry out out planting pit；

e2)：The size of planting pit is determined according to nursery stock size；

When container nursery is afforested, determines afforestation line-spacing and spacing in the rows, remove seedling-nourishing bag before afforestation, it then will be with soil ball Nursery stock is placed in hole, and container nursery top soil ball is less than planting pit, then buries soil, treads, nursery stock wants righting, then pours water；

When naked breeding and afforestation, determines planting pit depth and customization seeding row spacing, nursery stock is placed in planting pit, is treaded, then again Young plant is mentioned, seedling root is promoted to unfold, then buries soil, is treaded, can be poured water after afforestation；

Step F) Afforestation on Abandoned Cropland nursery stock manage and protect.

2. the method for rejected reasons quick recovering vegetation in arid-desert area according to claim 1, it is characterised in that：Step C) The tree principle real on the spot of middle reproducting tree species selection basis specifically,

c1)：First have to select the indigenous tree of strong drought resistance as preferred reproducting tree species；

c2)：Secondly reproducting tree species are determined according to soil salinization degree, with black fruit fructus lycii, more on the heavier soil of the soil salinization Spend Chinese tamarisk, matrimony vine, sacsaoul, epheday intermedia for Major Tree Species Planted, with Ammopiptanthus mongolicus, white thorn, hedysarum scoparium on the light soil of the soil salinization For Major Tree Species Planted.

3. the method for rejected reasons quick recovering vegetation in arid-desert area according to claim 1, it is characterised in that：Step D) The drains spacing 200cm of middle zanjon, ditch depth 40cm, furrow width 30cm.

4. the method for rejected reasons quick recovering vegetation in arid-desert area according to claim 1, it is characterised in that：Step F) Afforestation on Abandoned Cropland the concrete measure managed and protected of nursery stock be：Pipe irrigation project is mainly poured water and weeding after afforestation, wherein the specific side that pours water Method is as follows, primary, light irrigation method to be used of pouring water of pouring water every 15~20 days after seedling growth, and the water surface is away from furrow face 4cm~5cm Can, it prevents water from covering furrow face, causes weeds propagation and widespread, frequency of irrigation is reduced after July, promote nursery stock degree of lignification, enhance seedling The wooden resistance, in favor of seedling overwintering, the next summer, which is poured water 1~2 time, can stop to fill, and nursery stock can be given birth to using natural precipitation It is long.

5. the method for rejected reasons quick recovering vegetation in arid-desert area according to claim 1, it is characterised in that：Step E) In rejected reasons method of forestation：

When container nursery is afforested, afforestation line-spacing is advisable with the 2m that ditches, and spacing in the rows is advisable with 1.5m~2m, and container nursery top soil ball is low In planting pit 5cm~10cm；

When naked breeding and afforestation, planting pit depth is generally in 40cm or more, and customization seeding row spacing is advisable with 2m, and naked nursery is embedded in At hole deep 2/3.