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两部分组成，其生长发育可划分为5个阶段：原生鳞茎分化期、原生鳞茎膨大期、侧生鳞茎形成期、鳞茎快速膨大期、鳞茎充实期。