1. Excavate the top 4-6 ins layer of dirt and fill back up with new topsoil of good quality. 2 V4 h) s5 m5 b$ c& ~' V2. 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 ( Q' u. O* j3 d
3# ceramistpalace 1 u' N" q7 D1 y4 `& h y) V
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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。 4 i3 K$ A( ]" D' D& S: HBIGWOOOL 发表于 2010-1-4 23:21
! K. x$ o$ n- b; v* Z+ A% S% }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.