米兰喜暖热湿润和光照充足的环境 ,喜温性强 ,耐寒性弱 ,尤忌霜冻 ,对热量条件要求严格。据实验 ,米兰在 12℃以上才能生长 ,最适宜现蕾开花的温度为 2 5～ 30℃。管理得当的米兰在一年内要连续开花5次之多 ,但莳养不得法 ,常会发生不开花现象。其预防措施如下 :(1)秋季适当推 Warm and humid, warm and humid Milan, and adequate light environment, hi warm, cold weak, especially avoid frost, demanding on the heat conditions. According to the experiment, Milan can grow above 12 ℃, and the most suitable temperature for flower budding is 25 ~ 30 ℃. Well-managed Milan will blossom as many as five times a year in succession, but not enough to raise the law, often without blooming. The preventive measures are as follows: (1) appropriate autumn push