发布时间:2025-01-20 05:44:36
芦荟扦插可于春季3~4月在母株上取插穗,将中部的节位处切断,上段留有5~7片叶,下段也留3~4片叶,切下的茎段晾干10~15天,然后去掉离切口最近的两片叶,将其插入苗床长10~15厘米,去除基部2侧叶,放置1天后插于培养土内,4~5天后浇水。25天后发根,分苗上盆即可。
外面气温38度 打开空调调到16度 能把房间里面温度降到16度吗 要多久时间 请问
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