CN-121986621-A - Soil ecological restoration method for algae-moss-grass symbiotic crust

Abstract

The invention discloses a soil ecological restoration method for algae-moss-grass symbiotic crust, belonging to the technical field of ecological restoration. The method comprises the following steps of inoculating algae, moss plants and grassy herbaceous plants to soil together, setting illumination conditions with illumination intensity of 3000 Lux~8000 Lux on the soil to be repaired, and applying water according to the frequency of every 1-3 days. The invention can flexibly adjust the regulation and control scheme according to the climate conditions of different areas, the strong light and high frequency water application combination is suitable for wet areas, the weak light condition is suitable for water limited areas, the whole process does not need to depend on chemical reagents, the environment is protected, the invention can be widely applied to ecological engineering such as soil restoration, side slope treatment and the like in arid and semiarid areas, and has wide application prospect.

Inventors

• ZHANG WEIZHEN
• LI ZHIGANG
• LIN PENG
• LI QIHUI
• LONG ZHONGYI
• LI WAN
• ZHOU CHUHAN
• HAN JINMENG
• ZHANG YANLIN
• DING YAO

Assignees

• 成都理工大学
• 四川金砂道生物科技有限公司
• 中国市政工程西南设计研究总院有限公司

Dates

Publication Date

20260508

Application Date

20260312

Claims (7)

1. 1. The soil ecological restoration method for the algae-moss-grass symbiotic crust is characterized by comprising the following steps of: The algae, moss and grass herb are inoculated to the soil together, lighting conditions with lighting intensity of 3000 Lux~8000 Lux are set on the soil to be repaired, and water is applied according to the frequency of every 1-3 days.
2. 2. The method of ecological restoration of soil according to claim 1, wherein said algae is a glycosphingoid, said moss plant is sphagnum, and said grass is ryegrass.
3. 3. The method for ecologically restoring soil according to claim 1 wherein the algae is inoculated in an amount of 5 g/m 2 on a dry weight basis and ryegrass is sown in an amount of 11.25 g/m 2 .
4. 4. The method of ecological restoration of soil according to claim 1, wherein said bryophyte is planted in the form of pre-cultivated moss blocks.
5. 5. The method for restoring soil ecology according to claim 1, wherein the method for jointly inoculating algae, moss and grass plants into the soil is that algae, moss and ryegrass are planted in a mode of simultaneous implantation or staged implantation.
6. 6. The method of ecological restoration of soil according to claim 5, wherein the method of staged implantation is: firstly, planting moss plants and ryegrass, and planting algae after culturing for 14 days; Or first planting moss plants and algae, culturing for 14 days, and then planting ryegrass.
7. 7. The method of ecological restoration of soil according to claim 1, wherein the soil is alkaline residue soil or barren sanded soil.

Description

Soil ecological restoration method for algae-moss-grass symbiotic crust Technical Field The invention relates to the technical field of ecological restoration, in particular to a soil ecological restoration method for algae-moss-grass symbiotic crust. Background Soil desertification, desertification and barren problems are increasingly prominent, and ecological environment restoration and agricultural sustainable development are severely restricted. The traditional soil improvement means depend on chemical modifier or single plant cultivation, and have the defects of high cost, easiness in causing secondary pollution, difficulty in lasting ecological restoration effect and the like. Biological crust is used as an important component of the desert ecosystem, is formed by compounding organisms such as algae, moss, lichen and the like with soil particles, and has the functions of improving soil structure, improving soil fertility and reducing water and soil loss. However, naturally formed biological crust has long development period, is sensitive to environmental conditions, and is difficult to be rapidly applied to artificial ecological restoration scenes. The existing technology for artificially constructing biological crust generally has the problems of unreasonable species collocation, inaccurate regulation and control of environmental conditions and lack of optimization of planting time sequence. This results in low efficiency of crust formation, poor stability, and unexpected improvement effect on physical and chemical properties of soil. In addition, the crusts constructed by single algae, moss or herbaceous plants have insufficient stress resistance when dealing with complex field environments, and the dual requirements of soil structure improvement and vegetation restoration cannot be considered. Therefore, the development of a high-efficiency and stable multi-species symbiotic organism crust construction technology has important significance for ecological restoration in arid and semiarid regions. Disclosure of Invention The invention aims to provide a soil ecological restoration method for algae-moss-grass symbiotic crust, which aims to solve the problems in the prior art. In order to achieve the above object, the present invention provides the following solutions: According to one of the technical schemes, the soil ecological restoration method for the algae-moss-grass symbiotic crust comprises the following steps: The algae, moss and grass herb are inoculated to the soil together, lighting conditions with lighting intensity of 3000 Lux~8000 Lux are set on the soil to be repaired, and water is applied according to the frequency of every 1-3 days. Based on the technical scheme, the invention has the following technical effects: The algae-moss-grass symbiotic biological crust has the remarkable beneficial effects that plant growth indexes can be remarkably improved on one hand, under the condition that 3000-8000 Lux illumination is matched for watering every day or every 3 days, the germination rate of ryegrass can reach 63% at the highest, the plant height can reach 25.8 cm, the biomass increment of the sphagnum can reach 5.6 mg/cm 2, the synergistic high-efficiency growth of algae, moss and grass is realized, on the other hand, the physical and chemical properties of soil can be effectively improved, the pH of the soil is reduced to 7.0-8.0, the volume weight of the soil is reduced to 1.56 g/cm 3, the total porosity is increased to 29%, the compressive strength of the soil is increased to 88% at the highest, the structural stability and the erosion resistance of the soil are remarkably enhanced, meanwhile, the initial nutrition competition between species can be avoided by adopting the planting strategy of the ryegrass after the sphagnum-algae is firstly cultivated to 14 d, the high-moss is increased by 17% in a relatively synchronous group, the compressive strength of the soil is increased by 92%, the ecological environment-friendly method can be widely applied to the areas with different requirements of high-level, the ecological environment-friendly and the environment-friendly ecological environment-friendly region can be widely controlled by the high-humidity-critical environment-friendly contrast, the environment-friendly region is not limited by the requirements of the full-range of the method. Drawings FIG. 1 shows the germination rate of ryegrass under different light and moisture conditions. FIG. 2 shows the plant height of ryegrass under different light and moisture conditions. FIG. 3 shows the biomass increment of moss under different light and moisture conditions. FIG. 4 shows soil pH under different light and moisture conditions. FIG. 5 shows soil volume weights under different light and moisture conditions. FIG. 6 shows soil porosity under different light and moisture conditions. FIG. 7 shows the compressive strength of soil under different light and moisture conditions. FIG. 8 shows