白兰是一种名贵的香花,不耐寒,在华南能露地栽培,而在长江流域及北方只能盆栽,冬季要移入室内才能越冬。一般家庭栽培白兰,冬天时常遇到冻害。这个问题能不能解决呢? 笔者去年从南方引种一盆白兰,从5月到10月生长迅速,开花四、五十朵,香味浓郁。11月下旬气温降低后移入室内。室温最低时只有4—5℃。其大型叶片发生冻害,叶片周缘先焦枯、卷起,最后 Prynne is a valuable fragrant flower, not cold, can be planted in the open field in South China, and in the Yangtze River Basin and the North can only potted in winter to move into the room to wintering. Common family cultivation Prydium, frost damage often encountered in winter. This problem can not be solved? I introduced from the south last year, a pot of Prynne, from May to October rapid growth, flowering four or five, rich flavor. In late November after the temperature dropped into the room. Room temperature is only 4-5 ℃ minimum. Frost damage occurs on its large leaves, the first leaves of the periphery of coke dry, rolled up, and finally