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.

地下鳞茎由原生鳞茎和侧生鳞茎，其生长发育可划为5个阶段：原生鳞茎化期、原生鳞茎膨大期、侧生鳞茎形期、鳞茎快速膨大期、鳞茎充实期。