Field experiment was conducted to study the effects of controlled-release fertilizer on potato growth and soil enzyme activities.The results indicated that:Compared with ordinary fertilizer,the plant height,stem diameter and chlorophyll were significantly increased by the application of controlled-release fertilizer,which respectively increased by 5.94%,9.04% and 5.55%.Furthermore,when the amount of controlled-release fertilizer was reduced by 20%,there was no significant change on the promotion effect.Both...