发布时间:2025-02-07 17:05:17
这个要看你营养土的成分,正常营养土和黄沙比例为1:1,黄沙主要增加过水性,防止水肥过大引起烂根,营养土如果泥炭土、椰糠等成分过大则要增加黄沙的比例
建筑钢筋图纸怎么看的懂我要学习哪位朋友能给个帮助图集技巧什么的谢谢下面有邮箱
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