Introduction to Cotton Thorn: Cotton Thorn is a rare species, a deciduous dwarf shrub, 20-40 cm high, with erect or slanted branches. The climate in the distribution area is arid, with scarce rainfall, hot summers and severe cold winters. The annual average temperature is about 7℃, the absolute maximum temperature can reach 40℃, the absolute minimum temperature can reach -32℃, and there are more than 3000 hours of sunshine throughout the year; the annual precipitation is 50-150 mm, mostly concentrated in June-August, but Evaporation is much greater than precipitation.

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