#$%^&*AU2014100700A420140724.pdf#####PREPARATION METHOD, AGRICULTURAL COMPOSITION AND APPLICATIONS OF NATURAL BRASSINOLIDE ANALOGS Abstract The present invention provides extraction methods and uses of brassinolide analogues extracted from a plant, including the uses for the promotion of growth, resistance to low temperature and salt tolerance of a plant. Furthermore, the present invention also provides agricultural compositions comprising the brassinolide analogues.