High-heat-preservation substrate for recovery of broken hill vegetation in high elevation region

Abstract

The invention relates to the technical field of plant cultivation substrates, in particular to a high-heat-preservation substrate for recovery of broken hill vegetation in a high elevation region. 45-50% by volume of sand loam, 35-40% by volume of highland barley straw, 3-6% by volume of organic fertilizer, 0.01-0.03% by volume of pellet agent, 0.01-0.03% by volume of polyvinyl acetate, 0.01-0.03%by volume of sodium carboxymethylcellulose, 2-4% by volume of humic acid, 2-4% by volume of liquid emulsified asphalt and 0.03-0.10% by volume of plant seeds are taken, the substrate thickness is 2-6cm, the highland barley straw particle size is 2-4 cm, the organic fertilizer is faeces of Tibetan-sheep and yaks, highland barley straw and rape stalk with the particle size smaller than 4 cm, faeces and the stalk are mixed according to the volume ratio being 1:(1-3) and then subjected to composting fermentation, the composting time is from October to April the following year, turning and ventilation are conducted semimonthly, film mulching is used for covering at night, the fermentation temperature is maintained, and the seeds comprise one or multiple of pennisetum centrasiaticum, orinus thoroldii (Stapf ex Hemsl.) bor, rrtemisia wellbyi Hemsl. et Pears. ex deasy, oxytropis sericopetala, rhododendron nivale and sabina chinensis. The substrate has the advantages of being high in heat preservation, capable of prolonging plant growth time, resistant to washout, good in water-retaining property and capable of increasing the broken hill coverage rate.

Description

technical field [0001] The invention relates to the technical field of plant cultivation substrates, in particular to high thermal insulation substrates used for restoration of damaged mountain vegetation in high altitude areas Background technique [0002] The ecological environment in the plateau area is extremely fragile, and the immature ecological chain has poor self-regulation and repair ability after being damaged. After the vegetation on the mountain is degraded, soil erosion will be aggravated, making the slope more barren, and increasing the difficulty of vegetation restoration. Tibet belongs to the plateau cold and arid climate zone, which has extreme natural conditions of low temperature in winter, repeated freezing and thawing, and high evaporation in summer. In the existing research, planting bags (blankets), foreign soil spraying, thick-layer substrates and vegetation concrete greening technologies are mostly used in the vegetation restoration of damaged mount...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a substrate for restoration of damaged mountain vegetation with high thermal insulation properties that can be applied to plateaus and alpine regions, especially in alpine regions above 3,000 meters above sea level, and solves the problem of poor thermal insulation and freeze-thaw resistance in the prior art. Poor capacity, spraying can only be done when the daily minimum temperature is greater than 8°C, resulting in short plant growth cycle, poor overwintering rate of cultivated vegetation in alpine regions, and technical problems that the vegetation system is easy to degrade