What flowers are suitable for Jiayuguan
In the western end of the Hexi Corridor, Jiayuguan is famous for its Gobi scenery. This ancient Silk Road city has an annual evaporation rate 20 times that of precipitation, and the extreme temperature differences and arid environment have nurtured unique plant landscapes. Mastering the characteristics of suitable plants, deserts can also burst with vitality.
The survival strategy of plants in the northwest climate
Strategies for coping with extreme temperature differences
Under the average annual temperature of 6.7-7.7℃, the national Pagoda Tree obtains groundwater through deep roots and thick bark to resist the low temperature of -20℃ in winter. Peony adopts the form of perennial roots to survive the winter, storing nutrients in underground tubers and germinating new buds when the temperature is above 15℃ in spring.
Evolutionary characteristics of water-saving plants
The bulbs of the Lily store water, and the leathery leaves reduce transpiration. The succulent leaves of the Sedum can store water for 30 days, and the villous epidermis reflects strong light. These plants can survive in an environment with an annual precipitation of 85mm, and their water requirement is only 1/3 of that of ordinary flowers.
Selected plant scheme for Gobi garden
Optimal selection of drought-resistant trees
The roots of the Prunus sibirica reach a depth of 8 meters, and the flowering period can tolerate level 7 sandstorms.海棠 uses wax-covered leaves and配合夜间气孔开合机制 to increase water utilization by 40%. It is recommended to maintain a planting spacing of more than 3 meters to ensure root development space.
Ornamental flower combinations
Mixing planting of Persian aster and butterfly flower can extend the flowering period from May to September. The vertical lines of the Snake Whisk grass and the round leaves of the Hosta create a three-dimensional landscape. Planting 6-8 plants per square meter, combined with a drip irrigation system, can save water by 50%.
Interpretation of the city's ecological business card
As the city tree, the national Pagoda Tree has a survival rate of 92% in Jiayuguan, and its umbrella-shaped canopy can reduce the ground temperature by 4-6℃. The sophora gum secreted by the trunk has anti-wind erosion characteristics, and the cracked bark structure effectively reflects ultraviolet rays. Newly planted seedlings need to be tied with wind-resistant supports, and they can naturally resist wind speeds of 10m/s after three years.
The planting wisdom that has continued from the Han Dynasty's Tunten period has allowed Jiayuguan to form a unique community of xerophytic plants. Selecting 15-20 suitable plants for mixed cultivation, combined with early spring mulching and moisture retention measures, can create an ecological miracle of flowers blooming in three seasons on the Gobi balcony.