In the vegetable growing and the green bud stage of chrysanthemum“Golden empress”,different concentrations(10 mg/L,20 mg/L and 50 mg/L)of KT was sprayed to study the effect of KT on the leaves of the green bud,physiological and biochemical changes of the petals in the florescence,the time of flowering and the length of florescence of chrysanthemum. Results as follows:In the leaves of green bud stage,the changes of chlorophyll content,Reductive suger/soluble protein,Dry Weight/Fresh Weight,the apparent photo...