1. Excavate the top 4-6 ins layer of dirt and fill back up with new topsoil of good quality.8 F1 I- |% Q! o* N- U- A
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 0 Q8 c& V7 I+ [2 X, T b
3# ceramistpalace 6 y9 y+ ?' g# ^- \ + a) j1 g+ F' c% }( p) ~# S' @2 R
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。 # ], b6 w, e- dBIGWOOOL 发表于 2010-1-4 23:21
6 u# k9 V. Q9 C t4 H
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.