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.