1. Excavate the top 4-6 ins layer of dirt and fill back up with new topsoil of good quality.- U" G3 b4 ?7 m/ p4 _+ I6 t) Q: Z
2. Reduce the use of chemical fertilizer and use organic one instead.
本帖最后由 ceramistpalace 于 2010-1-5 16:28 编辑 * R5 e( x6 x Z
3# ceramistpalace ) |5 Q2 B5 T6 B7 b& ?
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可是我已经铺上了大概3IN 的COMPOST 土,要挖起来就费劲了。不过还要谢谢您的回复。5 {7 N- g7 x2 a) B
BIGWOOOL 发表于 2010-1-4 23:21
' F/ i. T L0 `8 ?! p: [I should tell a bobcat is required if you wanna do the whole front/back yard OR just spot-excavation (dig a bigger and deeper than normal hole, dump the old dirt and back fill w/ good topsoil when you want to plant a new tree) if you gonna do the job yourself.