CN104145691A - Method for sustainable management of high and cold sand land in Northwestern Sichuan with rhodiola rosea - Google Patents

Abstract

The invention relates to a method for restoring vegetation in alpine sandy land in northwest Sichuan, in particular to a method for sustainably treating alpine sandy land in western Sichuan by using Rhodiola rosea, and belongs to the field of agricultural technology. The method for utilizing Rhodiola rosea to govern the alpine sandy land in northwestern Sichuan sustainably comprises the following steps: a. building sand barriers; Rhodiola is Rhodiola grandiflorum or Rhodiola angustifolia; c. planting: using hole planting method to transplant on the alpine sandy land in Northwest Sichuan, and planting in autumn; d. management: fertilization and pest control; e. seed collection: growing 5 Seed after year. The invention firstly successfully plants Rhodiola rosea in the alpine sandy land in northwestern Sichuan, and the survival rate of Rhodiola angustifolia can reach more than 90%. Because Rhodiola has certain economic value, the successful planting of Rhodiola in Northwest Sichuan not only has ecological value, but also has economic value, thus realizing the sustainable management of alpine sandy land in Northwest Sichuan.

Description

The method of using Rhodiola rosea to sustainably control the alpine sandy land in Northwest Sichuan

technical field

The invention relates to a method for restoring alpine sandy land in northwestern Sichuan in an alpine area or a similar area, in particular to a method for using Rhodiola rosea to sustainably control the alpine sandy land in western Sichuan, and belongs to the field of agricultural technology.

Background technique

Grassland degradation and desertification have become problems in China and the world at present, and Northwest Sichuan is no exception.

Northwestern Sichuan is located on the southeastern edge of the Qinghai-Tibet Plateau. It is an important water conservation area for the Yangtze River and the Yellow River. The average altitude is above 3600m. The climate type belongs to the continental plateau cold temperate monsoon climate. , Long winter without summer, low heat; dry and rainy seasons are distinct, rainy and hot in the same season; sunshine is long, solar radiation is strong; disastrous weather is frequent. The annual average temperature is 0-6°C, the extreme maximum temperature is 25.0°C in July, and the extreme minimum temperature is -38.9°C in February. The average annual sunshine is 1,600-2,400 hours, and the active accumulated temperature above 10°C is 1,000-1,500°C. The annual precipitation is 500-900mm, 80% of which is concentrated in May to October. The average annual snow accumulation period is 76 days, which can be as long as 3 months and as short as 2 months. The soil fertilizer content is low, which belongs to the typical ecological environment fragile area.

In order to prevent further desertification of grasslands and control degraded grasslands, Northwest Sichuan has been actively working on the vegetation restoration of degraded and deserted grasslands. For example, Wang Yanchun (Study on the Restoration Effect of Fenced Grassland Vegetation in Northwest Sichuan Grassland and Grassland Project Area, Grass Industry Science, 2008) comprehensively evaluated the grassland retreat in Northwest Sichuan from the aspects of aboveground vegetation species diversity, biomass, grass height and coverage. The effect of vegetation restoration on the fenced steppe in the grazing-grass project area. Liu Bing (the impact of grassland management measures and degradation degree on the change of soil nutrient content, Chinese Journal of Ecological Agriculture, 2007) explored the soil fertility of alpine natural grazing grassland under different measures in Northwest Sichuan, and found that soil organic matter, total N, The total P content increased significantly, and the soil available N and P content also increased significantly. Many scholars have done a lot of detailed work on restoration measures of degraded sandy land, characteristics of plant communities, changes in soil environment, and the relationship between vegetation and soil from different angles, but these studies are still at the stage of theoretical research.

In addition, the management of the alpine sandy land in Northwest Sichuan is currently mostly focused on ecological management, such as planting tall red willow and hard-stalked Agropyron. Due to the limited economic benefits of these vegetation, the artificial vegetation restoration of degraded grasslands in alpine areas is currently supported by the state. After the completion of the project, there will be no continuous investment of funds. In addition, the survival rate of vegetation is not high, and there will be no follow-up economic benefits. No one cares about it, eventually causing the sand to return to desertification.

How to sustainably manage the alpine sandy land in western Sichuan and truly restore desert vegetation is an urgent problem to be solved at present.

Faced with the above problems, people began to look for ways to achieve sustainable management of alpine sandy land in Northwest Sichuan. At present, medicinal materials with high economic value successfully grown in sandy land include Cistanche deserticola in Xinjiang and licorice in Inner Mongolia. However, due to the special climatic conditions and harsh environment in the sandy land in Northwest Sichuan, these two kinds of medicinal materials cannot survive in the sandy land in Northwest Sichuan. It can be seen that the selection of vegetation in degraded sandy land is very important, and it is not easy to achieve sustainable vegetation restoration in alpine sandy land.

In summary, in order to achieve sustainable management of alpine sandy land in Northwest Sichuan, the selected vegetation must bring both ecological value and economic value, and the selection of vegetation is very important in the management of degraded sandy land or grassland.

Rhodiola rosea is a perennial herbaceous plant of Crassulaceae. Its roots are mainly used as medicine, and its taste is slightly astringent. In recent years, Chinese researchers have done a lot of research work on Rhodiola rosea. In terms of chemical components, more than 30 compounds have been isolated from Rhodiola rosea plants; salidroside, two kinds of superoxidized Functional components such as isoenzymes of biodismutase and petracenin (Ⅱ) have generally attracted people's attention. Studies have found that Rhodiola has the effects of anti-aging, anti-fatigue, anti-hypoxia, promoting blood circulation and removing blood stasis, and can be used for heart failure, anemia, diabetes, hypotension, physical weakness after illness, forgetfulness, neurasthenia and other diseases. It can be seen that rhodiola has good medicinal economic value.

The inventor of the present application has long been committed to the research of seedling raising and artificial cultivation of Rhodiola rosea. Preliminary research results (patent 200810304937.2) disclose a method for raising seedlings of Rhodiola grandiflorum and its cultivation method. The disclosed Rhodiola grandiflora cultivation method includes: a, site selection, site preparation, b, cultivation, c, field management, d , Harvesting.

Facing the severe degradation of the sandy land in the alpine region of Northwest Sichuan, the inventors of the present application have conducted a lot of research in an attempt to realize the sustainable development of vegetation restoration in the degraded sandy land. At present, there is no relevant report on the use of rhodiola to control the alpine sandy land in Northwest Sichuan.

Contents of the invention

In view of the above-mentioned status quo, the present invention proposes a method for sustainably managing the alpine sandy land in northwestern Sichuan, that is, planting rhodiola rosea on the alpine sandy land, which has both ecological value and economic value, thereby achieving sustainable governance of Sichuan The purpose of the alpine sandy land in the northwest.

Technical scheme of the present invention:

The invention provides a method for utilizing Rhodiola rosea to sustainably control the alpine sandy land in northwestern Sichuan, comprising the following steps:

a. Build sand barriers: build sand barriers on the alpine sandy land in northwestern Sichuan using conventional barrier building methods;

B, seed selection: select Rhodiola rosea seedlings or rhizome ramet propagation seedlings to be seedlings, and described Rhodiola rosea is Rhodiola grandiflora or Rhodiola angustifolia,

For seedlings: seedling cultivation time ≥ 3 years, seedling stem diameter ≥ 2cm;

For rhizome ramet propagation seedlings: Rhodiola grandiflorum rhizome diameter ≥ 2cm, rhizome length ≥ 15cm; Rhodiola attenuata seedling diameter ≥ 8cm;

C, planting: the selected seedlings of step b are transplanted on the alpine sandy land in northwestern Sichuan with sand barriers by means of hole planting, and fertilizers are buried under the sandy ground, and are planted in autumn; after planting, use fine soil from all sides to For inner cultivation, the covering soil should exceed the terminal bud by 5-8cm; wherein, the planting amount is 4200-6000 plants/mu; the fertilizer is mainly organic fertilizer, supplemented by inorganic fertilizer, and the amount of organic fertilizer is 3000-5000kg/mu;

d. Management:

(1) Fertilization: spray fertilizer, 1 to 2 times a year; the fertilizer is inorganic fertilizer, and the amount of fertilizer applied is: nitrogen: calculated as urea, 2kg/mu; potassium and phosphorus: calculated as potassium dihydrogen phosphate, 2kg/mu ; Fertilizer concentration is 0.5～1wt%;

(2) Pest control: control root rot, leaf spot, powdery mildew, aphids, rodents;

e. Seed collection: Seeds are collected after 5 years of growth, and 1/3 to 2/3 of each cluster can be picked during seed collection.

Among them, the construction method in step a is: use plateau red willow as material, and set up high vertical or semi-concealed biological sand barriers; high vertical sand barriers are set on the windward side and wind erosion nest on the top of the sand dunes, and the setting direction is perpendicular to the main wind direction ; Semi-implicit sand barriers are set on the leeward side of degraded grass hills and places with gentle terrain.

Furthermore, when building sand barriers, plateau red willows are raised with short branch cuttings, and sand barriers are built with materials with seedling age ≥ 2 years.

Furthermore, the planting method of the plateau red willow is as follows: the hole planting method is adopted, and the plateau red willow is treated with a root-promoting material (potassium indole butyrate) before transplanting (soaking the base of the plateau red willow with 200-00 ppm of potassium indole butyrate hours), the distance between transplanted plants is 2-4m, and the size and depth of the holes are slightly larger than the root system of seedlings; when planting, fill half of the soil, lift the seedlings and step on it, then fill it up and step on it, and finally cover with empty soil; among them, moderately degraded The planting amount of grassland should be 60-160 plants/mu, and the planting rate of severely degraded grassland should be 200-600 plants/mu.

In step b, the Rhodiola rosea is preferably Rhodiola angustifolia.

In step b, seedlings with large body size, large and full buds, robust, disease-free and without mechanical damage are selected for seedlings; seedlings with no pests and diseases and no damage to the epidermis are selected for rhizome ramet propagation seedlings.

In step c, when planting, when there are other vegetations in the sandy land, the planting spacing is 30-35 cm, and the row spacing is 35-40 cm; when there is no other vegetation in the sandy land, the planting spacing is 30-35 cm, and the row spacing is 30-35 cm.

Preferably, the seedlings are treated with disinfectant solution before transplanting in step c.

Specifically, the seedlings are soaked in an aqueous solution of potassium permanganate with a concentration of 0.1-0.5% for 20-30 minutes before transplanting.

The concentration of the disinfectant is preferably 0.1-0.5% potassium permanganate aqueous solution.

The inventive method has the following beneficial effects:

The invention successfully plants Rhodiola rosea for the first time in the alpine region of northwest Sichuan, and the survival rate of Rhodiola angustifolia can reach more than 90 percent, and the survival rate of Rhodiola grandis can reach more than 70 percent. Because Rhodiola has certain economic value, the successful planting of Rhodiola in Northwest Sichuan not only has ecological value, but also has economic value, thus realizing the sustainable management of alpine sandy land in Northwest Sichuan.

Detailed ways

The invention provides a method for restoring alpine degraded grassland vegetation in northwestern Sichuan, comprising the following steps:

a. Build sand barriers: build sand barriers by conventional barrier building methods on alpine degraded grasslands in Northwest Sichuan;

b. Seed selection: select Rhodiola rosea seedlings or rhizome ramet propagation seedlings as seedlings, wherein the seedling cultivation time is ≥ 3 years, and the diameter of the seedling stem is ≥ 2cm; rhizome ramet propagation: rhizome rhizome diameter ≥2cm, rhizome length ≥15cm, and the diameter of Rhodiola angustifolia seedlings should be ≥8cm; due to the specific soil environment, climate environment and other factors in the alpine region of Northwest Sichuan, it has certain selectivity for seedlings, that is, not all Rhodiola seedlings are all suitable for planting in the alpine regions of Northwest Sichuan. After exploration, it is found that the seedlings need to be raised for ≥3 years, and the diameter of the seedling stem is ≥2cm; The length is ≥15cm, and the diameter of Rhodiola angustifolia seedlings should be ≥8cm;

From June to August, the surface temperature of the sandy land can reach above 56°C on sunny days. If the seedlings are too small, the seedlings will be dried and die in the sandy land. Only when the stems of the seedlings are large enough can they grow Grows normally in sandy soil. It is found through tests that the survival rate of seedling stems with a diameter less than 2cm is lower than 40%, while the survival rate of seedling stems with a diameter greater than 2cm is higher than 70%;

c, planting: the seedlings selected in step b are transplanted on the alpine sandy land in northwestern Sichuan with sand barriers by means of hole planting, and fertilizers are buried under the sandy ground, and are planted in autumn. After planting, use fine soil from all sides to For inner cultivation, the covering soil should exceed the terminal bud by 5-8cm; among them, the planting amount is 5000-6000 plants/mu, the fertilizer is farmyard manure, and the fertilizer dosage is more than 3 tons/mu; when planting, set the planting conditions according to the site conditions. When there are other vegetation on the ground, the distance between plants is 30-35cm, and the distance between rows is 35-40cm; Local materials are used locally, and the cost is relatively low; farmyard manure is an organic fertilizer, which is characterized by comprehensive nutrients. It not only contains nitrogen, phosphorus, and potassium, but also contains calcium, magnesium, sulfur, iron and some trace amounts. element;

d. Management:

(1) Fertilization: Spray fertilizer, 1-2 times a year; the fertilizer is inorganic fertilizer: nitrogen (calculated as urea) 2kg/mu, potassium phosphorus (calculated as potassium dihydrogen phosphate) 2kg/mu, which can be mixed with water Spraying at a concentration of 0.5 to 1%;

(2) Pest control: control root rot, leaf spot, powdery mildew, aphids, rodents;

e. Seed collection: Seed collection after 5 years of growth, 1/3 to 2/3 of each clump can be picked when picking seeds. After a Rhodiola survives, it grows into multiple clumps, and only 1/3 of each clump needs to be picked when picking. 2/3 is enough; the rest continue to grow, so as to achieve sustainable growth.

Among them, the construction method in step a is: using plateau red willow as material, setting up high vertical or semi-concealed biological sand barriers; The direction is perpendicular to the main wind direction; semi-implicit sand barriers are set on the leeward side of degraded grass hills and relatively flat terrain.

Furthermore, when building sand barriers, plateau red willows are raised with short branch cuttings, and sand barriers are built with materials with seedling age ≥ 2 years.

Furthermore, the planting method of the plateau red willow is as follows: the hole planting method is adopted, the plateau red willow is treated with root-promoting materials before transplanting, the distance between the transplanted plants is 2-4m, and the size and depth of the holes are slightly larger than the root system of the seedling; It should be vertical, the root system should be stretched, and the depth should be appropriate. After filling half of the soil, lift the seedlings and step on it, then fill the soil and step on it, and finally cover with empty soil; moreover, the planting amount of moderately degraded grassland should be 60-160 plants/mu, The planting amount of severely degraded grassland should be 200-600 plants/mu.

In step b, seedlings with large body size, large and full buds, robust, disease-free and without mechanical damage are selected for seedlings; seedlings with no pests and diseases and no damage to the epidermis are selected for rhizome ramet propagation seedlings.

Propagation of rhizome seedlings refers to putting the seedlings in the sun for half a day to 1 day, removing the rhodiola with disease and no bud eyes, and then cutting the whole seedling of Rhodiola so that each rhizome seedling remains 2 to 3 bud eyes, the root length of Rhodiola grandis should be ≥15cm, and the diameter of Rhodiola attenuata lumpy seedlings should be ≥8cm.

Rhodiola rosea of the present invention is limited to transplanting in autumn.

In step c, plant one seedling evenly, plant one seedling in each hole, the ditch depth is 7-10 cm, the seedlings are erected into the hole, and the rhizome ramet propagation seedlings are put into the hole flatly. Both ensure that the root system is stretched and the buds are upward. After planting, use fine soil to cultivate the soil from all sides inward, and the covering soil should exceed the terminal bud by 5-8cm. When transplanting in autumn, the cover soil should be properly thickened to protect against cold and prevent freezing and pulling.

In the present invention, in order to achieve sustainable management of the alpine sandy land in Northwest Sichuan, the selection of species must have both economic and ecological benefits, and finally Rhodiola is creatively selected as the sandy land restoration vegetation. But if still adopting the cultivation method disclosed in the patent No. 200810304937.2, Rhodiola rosea can not be successfully cultivated in the alpine region of northwest Sichuan. Perhaps due to different factors such as soil environment and climate environment, the selection of seedlings, Rhodiola planting conditions and management requirements are not the same. Through a lot of creative work, the applicant of the present invention has explored a method for cultivating rhodiola rosea in the alpine region of Northwest Sichuan, and realized the sustainable management of the alpine sandy land in Northwest Sichuan.

The more specific and detailed description of the following non-limiting examples will help the understanding of the present invention, and the protection scope of the present invention is not limited by these examples, and the protection scope of the present invention is determined by the claims.

Embodiment 1 The plantation of Rhodiola angustifolia in the alpine sandy land in western Sichuan

The present invention will be described in further detail below by specific embodiment, and the control method of northwestern Sichuan alpine sandy land comprises the following steps:

1. Confirmation of the restoration site The main restoration process: survey→fence construction→sand barrier construction→vegetation restoration; Grassland degradation grade classification shall be implemented according to GB19377-2003:

1.1 Survey: Select moderately or severely degraded alpine sandy land, survey the basic information such as geographical location, grassland type, planting area, etc., and formulate an overall ecological restoration and vegetation restoration plan;

1.2 Fence construction: Fence construction can be carried out before and after planting; the quality and erection of fences shall be implemented in accordance with the regulations of JB/T51068-1999 and NY/T 1237-2006;

1.3 Build sand barriers:

Construction method: use plateau red willow as material to set up high vertical or semi-concealed biological sand barriers; high vertical sand barriers are mainly set up in places with harsh conditions such as the windward side of the top of the sand dunes and wind erosion nests, and the setting direction should be perpendicular to the main wind direction ;Semi-implicit sand barriers are mainly set on the leeward side of degraded grass hills and relatively flat terrain;

Requirements for construction materials: Plateau red willows are raised with short branch cuttings, and sand barriers are built with materials with seedling age ≥ 2 years;

Planting method: adopt the hole planting method, and apply root-promoting materials before transplanting the plateau red willow (that is, soak the base of the plateau red willow with 200-00ppm potassium indolebutyrate for 0.5-1 hour), the distance between the transplanted plants is 2-4m, the size of the hole The height and depth should be slightly greater than the root system of the seedlings; when planting, the stem of the seedlings should be vertical, the root system should be stretched, and the depth should be appropriate. After filling half of the soil, lift the seedlings and step on them, then fill them with soil and step on them, and finally cover with empty soil;

Construction density requirements: the planting amount of moderately degraded grassland should be 60-160 plants/mu, and the planting amount of severely degraded grassland should be 200-600 plants/mu.

2. Seed selection: select Rhodiola angustifolia of the genus Rhodiola sedum as a planting species for controlling alpine degraded sandy land;

2.1 Seedling selection and treatment

Rhodiola seedlings are divided into seedlings and ramets.

A) Seedlings: After 3 years of seedling cultivation, the stem diameter of the seedlings ≥ 2cm can be transplanted; the seedlings are graded according to size, buds, and robustness; the one with the largest body size, large, full and strong buds is the best; the medium size 1. Those with full and strong buds are good; those with no disease, no mechanical damage, and full buds are qualified; otherwise, they are defective products and are not recommended for use;

B) Propagation of seedlings by rhizome ramets: first put the seedlings in the sun for half a day to 1 day, remove the diseased Rhodiola rosea and those without bud eyes, and then cut the whole Rhodiola rosea seedlings, and the Rhodiola attenuata clusters The diameter of blocky seedlings should be ≥ 8cm; 2 to 3 bud eyes must be reserved for each rhizome seedling, and try to ensure that the selected seedlings are free from diseases and insect pests and the epidermis is not damaged;

2.2 Planting time: planting in autumn;

2.3 Seedling treatment: Soak in 0.1-0.5% potassium permanganate aqueous solution for 20-30 minutes before transplanting to sterilize the seedlings;

3. Cultivation:

3.1 Planting method: adopt hole planting method: row spacing 40cm, plant spacing 35cm, plant about 5000 plants per 667 square meters; plant evenly, plant one seedling in each hole, the seedlings are erected into the hole, and the rhizome ramets are placed in the hole, ensuring The root system is stretched out and the buds are upward; after planting, use fine soil to cultivate the soil from all sides inward, and the covering soil should exceed the terminal buds by 5-8cm, and transplant in autumn; when planting, when there are other vegetation in the sandy land, the distance between plants should be 30-35cm , the row spacing is 35-40cm; when there is no other vegetation in the sandy land, the row spacing is 30-35cm, and the row spacing is 30-35cm; when planting, there is fertilizer buried under the sand; the fertilizer is mainly organic fertilizer, supplemented by inorganic fertilizer, organic The amount of fertilizer is 3000～5000kg/mu;

4 Restoration site management and maintenance

4.1 Irrigation: After planting, timely water and irrigate the planting land, which can be implemented in accordance with the relevant regulations of SL 334-2005;

4.2 Fertilization: Spray fertilizer, 1-2 times a year; the fertilizer is inorganic fertilizer, and the fertilization amount is: nitrogen (calculated as urea), 2kg/mu; potassium and phosphorus (calculated as potassium dihydrogen phosphate), 2kg/mu ; The concentration of fertilizer is 0.5-1% by weight; the use of fertilizer should comply with the regulations of DB51/338;

4.3 Replenishment of seedlings: after planting, if missing nests and dead seedlings are found, the sand barrier and rhodiola should be replanted in time to ensure that the seedlings are complete;

4.4 Implement fence enclosure management, refer to the provisions of NY/T 1176-2006;

4.5 Comprehensive prevention and control of rodent and insect pests shall be implemented in accordance with the provisions of NY/T 1240-2006.

Using the method of Example 1, Rhodiola rosea was successfully planted in the alpine region of northwestern Sichuan for the first time, and the survival rate of Rhodiola angustifolia can reach more than 90%.

Embodiment 2 Plantation of Rhodiola grandiflora in alpine sandy land in western Sichuan

Embodiment 2 is different from Example 1 only in the selected species. In the present embodiment, Rhodiola grandiflora is used, and when rhizome ramet propagation seedlings are selected, when selecting Rhodiola grandiflora for use, the rhizome diameter ≥ 2cm, and the rhizome length ≥ 15cm. The rest of the steps are the same as in Example 1. Using the method in Example 2, Rhodiola rosea was successfully planted in the alpine region of Northwest Sichuan for the first time, and the survival rate of Rhodiola grandis can reach more than 70%.

Comparative Example 1 Different varieties and different planting methods

We initially tried to plant cistanche and licorice in the alpine region of Northwest Sichuan, but none of them succeeded. This is mainly because both Cistanche deserticola and licorice grow in the temperate continental arid and semi-arid climate area, where the altitude is low, the winter is cold and long, the boundary between spring and summer is not clear, the summer is short, the temperature is high, and the temperature drops quickly in autumn; the annual precipitation is in the Below 400mm. The annual average temperature is between 4°C and 14°C, and there is sufficient sunshine. The climate characteristics are completely different from those in the desertified areas in Northwest Sichuan, especially the rainfall and severe winter in the desertified areas in Northwest Sichuan are very unfavorable to the growth of Cistanche and licorice, a large number of rotten roots appear in summer, and it is difficult to survive the winter smoothly in winter.

In the experiment, we carried out the sandy land planting of Rhodiola clump and Rhodiola rosea, etc. After experiments, Rhodiola clumps basically all died (the survival rate of the year was less than 5%), and Rhodiola rosea could not survive the winter normally (second The annual spring germination rate is less than 5%).

In addition, in the present invention, if the cultivation method disclosed in the patent No. 200810304937.2 is still adopted, Rhodiola rosea cannot be successfully cultivated in the alpine region of northwestern Sichuan; it may be due to different factors such as soil environment and climate environment, the selection of seedlings The requirements for planting conditions and management of Rhodiola rosea are different.

Seedling requirements of comparative example 2

From June to August, the surface temperature of the sandy land can be as high as 56°C or higher on sunny days. When Rhodiola rosea is used, the diameter of the rhizome is less than 2cm, and the length of the rhizome is less than 15cm; when Rhodiola is selected, the diameter of the seedlings propagated by division of the rhizome is less than 8cm), the seedlings will be dried and withered in the sand, and only the stems of the seedlings are large enough Only then can it grow normally in sandy soil. It is found through tests that the survival rate of seedling stems with a diameter less than 2 cm is lower than 40 percent, while the survival rate of seedling stems with a diameter greater than 2 cm is higher than 70 percent.

Claims (9)

1. the method for utilizing rhodiola root sustainability and administering northwest, river alpine sandy land, is characterized in that, comprises the following steps:

A, build sand-protecting barrier: on river the Northwest alpine sandy land, adopt the conventional barrier mode of building to build sand-protecting barrier;

B, seed selection: selecting rhodiola root seedling or rhizome division propagation seedling is seedling, and described rhodiola root is rhodiola or narrow leaf rhodiola root,

For seedling: seedling seedling raise period >=3 year, the diameter >=2cm of seedling seedling stem;

For rhizome division propagation seedling: rhodiola rhizome diameter >=2cm, rhizome length >=15cm; Narrow leaf rhodiola root seedling diameter >=8cm;

C, plant: adopt cultivation mode in cave to transplant on northwest, the river alpine sandy land that is provided with sand-protecting barrier selected b step seedling, under sand ground, be embedded with fertilizer, and plant in the fall; After plantation, inwardly earth up from surrounding with fine earth, blinding exceedes terminal bud 5～8cm; Wherein, plantation amount be 4200-6000 plant/acre; Described fertilizer is taking fertilizer as main, and inorganic fertilizer is auxiliary, Rate of Organic Fertilizer 3000～5000kg/ mu;

D, management:

(1) fertilising: spray fertilizer, a year 1～2 time; Wherein fertilizer is inorganic fertilizer, and its fertilizing amount is: nitrogen: with ureometer, and 2kg/ mu; Potassium phosphorus: in potassium dihydrogen phosphate, 2kg/ mu; Fertilizer concentration is 0.5～1wt%;

(2) extermination of disease and insect pest: prevent and treat root rot, leaf spot, powdery mildew, aphid, the plague of rats;

E, seed collecting: grow 5 years afterwards collect seed, when seed collecting every clump pluck its 1/3～2/3.

2. the method for utilizing rhodiola root sustainability and administering northwest, river alpine sandy land according to claim 1, is characterized in that, the mode that builds sand-protecting barrier in step a is: taking plateau red building as material, the biological sand-protecting barrier of high vertical or half implicit expression is set; High vertical sand barrier is arranged on top of sand dune windward side and wind erosion nest, and setting party is to vertical with prevailing wind direction; Half implicit expression sand-protecting barrier is arranged on Degenerated mound lee face and the mild place of physical features.

3. the method for utilizing rhodiola root sustainability and administering northwest, river alpine sandy land according to claim 2, is characterized in that, while building sand-protecting barrier, plateau red building adopts brachyplast cuttage and seedling culture, carries out sand-protecting barrier build with the material of seedling age >=2 year.

4. according to the method for utilizing rhodiola root sustainability and administering northwest, river alpine sandy land described in claim 2 or 3, it is characterized in that, the planting system of plateau red building is: take cave to plant method for planting, plateau red building is used growth-promoting root material processed before transplanting, transplant strain spacing 2～4m, size and the degree of depth in cave are greater than seedling root; While planting, after the half of banketing, carry seedling and tread, then banket and tread, be finally covered with loosened soil; Wherein, moderate Degraded Sandy plantation amount is 60～160 plants/acre, and heavy-degraded sand ground plantation amount is 200～600 plants/acre; Described growth-promoting root timber material is indolebutyric acid potassium, describedly refers to soak plateau red building base portion 0.5～1 hour with indolebutyric acid potassium 200-00ppm with the processing of growth-promoting root.

5. according to the method for utilizing rhodiola root sustainability and administering northwest, river alpine sandy land described in claim 1～4 any one, it is characterized in that, in step b, described rhodiola root is narrow leaf rhodiola root.

6. according to the method for utilizing rhodiola root sustainability and administering northwest, river alpine sandy land described in claim 1～5 any one, it is characterized in that, in step b, seedling selects that build is large, luxuriant large and full and healthy and strong, anosis, the seedling that has no mechanical damage of bud; Rhizome division propagation seedling is selected without damage by disease and insect, the undamaged seedling of epidermis.

7. according to the method for utilizing rhodiola root sustainability and administering northwest, river alpine sandy land described in claim 1～6 any one, it is characterized in that, in step c, while planting, in the time that sand ground has other vegetation, plantation spacing in the rows is 30～35cm, and line-spacing is 35～40cm; In the time that sand ground does not have other vegetation, spacing in the rows is 30～35cm, and line-spacing is 30～35cm.

8. according to the method for utilizing rhodiola root sustainability and administering northwest, river alpine sandy land described in claim 1～7 any one, it is characterized in that, before planting transplantation of seedlings in step c, adopt thimerosal processing, described thimerosal is that concentration is the potassium permanganate solution of 0.1-0.5wt%.

9. the method for utilizing rhodiola root sustainability and administering northwest, river alpine sandy land according to claim 8, is characterized in that, adopts the method for thimerosal processing to be before planting transplantation of seedlings: seedling potassium permanganate solution is soaked to 20～30min.