怎样养好扶桑

植物图片 2019-05-28 09:47

盆栽扶桑

扶桑又叫朱槿牡丹。北方盆栽冬天人室养护，只要气温适合和光照充分，可常年开花。扶桑品种较多，有重瓣、单瓣；有红、桃红、橙黄、黄、白等色。

扶桑通常采用扦插繁殖，温室内可全年扦插。家庭可用花盆、木箱等在7~8月时扦插，较易成活。扦插时，选1~2年生枝条，插穗剪成8―10厘米长，把插穗下部的叶子去掉，上面留2~3叶子，扦插深度为插穗长的1/3-1/2，可用素面沙土或粗沙等做扦插用土。扦插后，最好用塑料薄膜或玻璃覆罩，并适度遮荫，经常喷水，保持较高的湿度。25~30天可以生根，然后分植上盆。

扶桑喜排水良好、肥沃的沙壤土，北方盆栽可用营养土上盆。换盆垫马掌片做底肥，5-9月，每1-2周追施液肥1次，冬天在高温房间内栽培，也需追肥。

扶桑抗寒能力较差，9月底至10月初搬入室内有阳光处，室温应保持在15~22℃之间。冬天短时间的零下低温就受冻害，长时期的低温和阴湿能使根颈腐烂，是扶桑冬天落叶、春天死亡的主要原因。5月中旬出房，摆在避风向阳处。

盆栽扶桑最忌积水久湿，平时注意适量浇水。低温时注意勒水，雨后盆中积水要及时倒掉，积水久了易引起烂根黄叶。

家庭养大棵扶桑，可在9月中旬修剪，先将残老病弱枝剪掉，结合整形，将健壮枝条剪去2/3。剪后放背风向阳处，注意勒水。9月底至10月初入室时，续发的新枝可达10厘米。新生枝抵抗力强，不易落叶，来年开花较早。

专题： 扶桑
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