发布时间:2025-01-21 12:46:41
可以,将龙骨花切段扦插,插穗长度应为20厘米至25厘米,在剪口处涂上多菌灵(也可用草木灰),然后晾干切口,插于微干的粗沙土中,一星期后插髓开始失水萎蔫,这时可浇少量的水,沙土宁干勿湿,以免剪口腐烂,待30天至40天,即可生根。
如果给一张cad的施工图你但是上面有地方却没有标上尺寸那我们怎么求的出精确的尺寸
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