As an essential measure to improve fruit appearance quality, bagging culture for Fuji apples has been widely extended in China. However, many problems pertaining to enclosed fruits, such as sunburn, black dot disease, fine fruit surface cracking, inferior color development, etc., have emerged coincidently, which is assumed to be associated closely with the changes of microenvironment where fruits grow. The purpose of this experiment was to examine the fruit microenvironment as influenced by bagging. Methodo...