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CN-121970659-A - Sand restoration method based on dittany compound and grass-filling multi-species configuration

CN121970659ACN 121970659 ACN121970659 ACN 121970659ACN-121970659-A

Abstract

The invention relates to a sand restoration method based on a dittany compound and grass-filling multi-species configuration, which relates to the technical field of sand fixation and comprises the following steps of S1, applying a water-retaining agent on the surface of sand to be treated; S2, spraying a dittany compound to promote formation of biological soil crust, and S3, covering a sunshade net on the sand surface, wherein the dittany compound comprises silver She Zhen moss, plant seeds and a compound microorganism growth promoter, and the compound microorganism growth promoter consists of trehalose, glycerol, potassium dihydrogen phosphate, ferrous sulfate heptahydrate, EDTA disodium, sodium molybdate and glycine betaine. The method combines the biological skinning technology with the multi-species vegetation configuration, not only can rapidly fix sand surfaces and resist wind erosion, but also can gradually improve soil nutrients and biological activity and promote forward succession of an ecological system, and has the advantages of low cost, environmental friendliness, continuous ecological benefit and the like.

Inventors

  • PAN CHENGCHEN
  • Zhao Chongzhao
  • WANG LILONG
  • LIU JILIANG

Assignees

  • 内蒙古草业技术创新中心有限公司
  • 中国科学院西北生态环境资源研究院

Dates

Publication Date
20260505
Application Date
20260403

Claims (9)

  1. 1. A sand restoration method based on a dittany compound and grass-filling multi-species configuration is characterized by comprising the following steps: S1, applying a water-retaining agent on the surface of sand to be treated; s2, spraying the dittany complex to promote the formation of biological soil crust; s3, covering a sunshade net on the sand surface; wherein the dittany complex comprises psoriasis She Zhen, plant seeds and a complex microbial growth promoter; The compound microorganism growth promoter consists of trehalose, glycerol, potassium dihydrogen phosphate, ferrous sulfate heptahydrate, EDTA disodium, sodium molybdate and glycine betaine.
  2. 2. The sand restoration method according to claim 1, wherein the method for obtaining the silver She Zhen moss is characterized by comprising the steps of collecting cortex dictamni radicis, drying in the shade, grinding into fine soil, filtering by a soil sieve with a pore diameter of 0.1mm, and uniformly mixing.
  3. 3. The sand restoration method according to claim 1, wherein the preparation method of the compound microorganism growth promoter comprises the following steps: (1) Weighing 30-80 g of trehalose, 60-80 ml of glycerol, 5-10 g of monopotassium phosphate, 3-5 g of ferrous sulfate heptahydrate, 0.2-0.4 g of sodium molybdate and 10-30 g of glycine betaine; (2) Sequentially dissolving the components in deionized water, and stirring until the components are completely dissolved; (3) Adding 0.1-0.3 g of EDTA disodium, and continuously stirring and uniformly mixing; (4) And (3) the deionized water is used for fixing the volume to 100 liters, and the composite microorganism growth promoter is obtained.
  4. 4. The method for repairing sand according to claim 3, wherein the silver She Zhen moss plant seeds and the compound microorganism growth promoter= (15-25): 2-3): 1-2 are mixed to form a suspension by mass ratio for use.
  5. 5. The method of repairing a sand according to claim 1, wherein the sunshade rate of the sunshade net is 60% to 80% in a bio-soil crust formation period and a plant seedling period, and the sunshade rate of the sunshade net is reduced to 20% to 40% after the vegetation enters a stationary growth period.
  6. 6. The sand restoration method according to claim 1, wherein in the step S1, the water-retaining agent is an agriculture and forestry water-retaining agent, the dosage of the water-retaining agent is 3-5 kg/mu, the water-retaining agent is directly applied to the land, and the water-retaining agent is uniformly mixed with soil and then watered.
  7. 7. A method of repairing a sand according to claim 1, wherein the application amount of the dittany compound is 150-250g per square meter of sand.
  8. 8. The method of claim 1, wherein the plant seeds are shrub seeds and herb seeds, wherein the shrubs are lespedeza, caragana microphylla, pedal boy, salix psammophila, and the herb is sallowness, elymus cape, bromus awamori, cryptopsis grossedentata, lysimachia, agropyron, bluegrass, and sand rice.
  9. 9. A sand restoration method according to claim 8, wherein the ratio of the shrubs to the herbs by mass is: 5% of shrubs, 25% of caragana microphylla, 8% of pedal man and 10% of salix psammophila; herbs including Saprolongation 5%, aleurites chowensis 5%, bromus 10%, cryptocarya paliurus 5%, lawsonia inermis 5%, bingcao 8%, poa pratensis 4%, sami 8%.

Description

Sand restoration method based on dittany compound and grass-filling multi-species configuration Technical Field The invention relates to the technical field of sand fixation, in particular to a sand restoration method based on a dittany compound and grass-filling multi-species configuration. Background Desertification is one of the most serious ecological environmental problems facing the world today, which leads to decline of land productivity, frequent sand storm, serious threat to regional ecological safety and sustainable development of economic society. In the treatment of mobile and semi-mobile sand, how to quickly fix sand surfaces, recover vegetation and rebuild the functions of an ecological system is a core technical challenge. Although the traditional physical and chemical sand fixation technology (such as grass square paving, chemical sand fixation agent spraying and the like) can stabilize the sand surface in a short period, the traditional physical and chemical sand fixation technology is high in cost, the material is not degradable, the soil fertility and the biological activity cannot be improved fundamentally, and the ecological benefit is limited. Therefore, biological sand stabilization technology aimed at restoring the function of the ecological system is increasingly paid attention to, wherein the biological soil crust technology and the plant sand stabilization technology are two main paths. Disclosure of Invention In order to solve the technical problems, the invention discloses a sand restoration method based on a dittany compound and grass-filling multi-species configuration, and the biological soil crust has the advantages of sand surface fixation, soil fertility improvement, wind erosion resistance and strong adaptability to extreme stress. Through the design of the vegetation multilayer structure, a multi-level vegetation community is formed, so that the earth surface coverage can be improved, and the stability of the vegetation community and the function of an ecological system are enhanced. The mixed restoration of the biological soil crust and the sand-fixing plants can make up the defect that the sand surface cannot be covered completely after vegetation is planted, can improve microclimate level of a planting area, enhance species diversity and accelerate the sustainability and stability of ecological restoration. The sunshade net covers the soil, so that partial illumination can be shielded, plants are prevented from being burnt due to direct irradiation of strong light, soil moisture loss is restrained, soil moisture content is improved, meanwhile, the sunshade net is arranged to stabilize a sand surface, and development of biological soil crust is promoted. The water-retaining agent can improve the water-retaining capacity of soil, especially can obviously inhibit the loss of soil moisture in drought seasons, and provides more moisture support for plants. The method comprises the following steps: A sand restoration method based on a dittany compound and grass-filling multi-species configuration comprises the following steps: S1, applying a water-retaining agent on the surface of sand to be treated; s2, spraying the dittany complex to promote the formation of biological soil crust; s3, covering a sunshade net on the sand surface; wherein the dittany complex comprises psoriasis She Zhen, plant seeds and a complex microbial growth promoter; The compound microorganism growth promoter consists of trehalose, glycerol, potassium dihydrogen phosphate, ferrous sulfate heptahydrate, EDTA disodium, sodium molybdate and glycine betaine. The method for obtaining the silver She Zhen moss comprises the steps of collecting the skin of the silver moss, drying in the shade, grinding into fine soil, and filtering and uniformly mixing through a soil sieve with the aperture of 0.1 mm. The preparation method of the compound microorganism growth promoter comprises the following steps: (1) Weighing 30-80 g of trehalose, 60-80 ml of glycerol, 5-10 g of monopotassium phosphate, 3-5 g of ferrous sulfate heptahydrate, 0.2-0.4 g of sodium molybdate and 10-30 g of glycine betaine; (2) Sequentially dissolving the components in deionized water, and stirring until the components are completely dissolved; (3) Adding 0.1-0.3 g of EDTA disodium, and continuously stirring and uniformly mixing; (4) And (3) the deionized water is used for fixing the volume to 100 liters, and the composite microorganism growth promoter is obtained. And according to the mass ratio, the silver She Zhen moss plant seeds and the compound microorganism growth promoter= (15-25)/(2-3)/(1-2) are mixed to form suspension for use. In addition, the sunshade rate of the sunshade net is 60-80% in the formation period of the biological soil crust and the plant seedling period, and is reduced to 20-40% after the vegetation enters the stationary growth period. In the step S1, the water-retaining agent is an agriculture and forestry water-retai