The grow progress of bulb is divided to 5 stages: probulb idiophase, probulb enlargement stage, primarybulb idiophase, bulb weight fast gain stage and bulb plenum stage.

地下鳞生鳞和侧生鳞两部组成，其生长发育可划5段：生鳞化期、生鳞膨大期、侧生鳞形成期、鳞快速膨大期、鳞充实期。