1. Excavate the top 4-6 ins layer of dirt and fill back up with new topsoil of good quality." ^& U5 L0 r. p/ U/ w
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 , S0 F+ G8 \0 t. C# Y5 l* _) d# Z
3# ceramistpalace ; n/ z1 l" k& `& A
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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。. T8 d4 `8 T; i$ k
BIGWOOOL 发表于 2010-1-4 23:21
; `4 n [- ]1 N% Y E3 _$ J6 A KI 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.