The seedlings of Eustoma grandiflorum sprayed with different concentration GA were cultivated in different light and temperature conditions,and their growth situation was observed.The results showed that 200~800 mg/L GA could promote the elongation and enlargement of stem and increase the leaf area of Eustoma grandiflorum seedlings.At the same concentration level of GA,the seedlings grew better under the light intensity of 1 800 lx,day length of 24 h and temperature of 25℃ than that under the light intensit...