1. Excavate the top 4-6 ins layer of dirt and fill back up with new topsoil of good quality.. ?0 S- G; `( b9 B' m7 T4 j3 L
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 9 I a- _% c! F& r$ J8 _1 _6 T
3# ceramistpalace 1 h2 J. O) V; Y1 y. _
# B. h/ i- j) s* e ' C2 `# m5 L d; A. h6 k7 H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。% i! x2 \0 v. _$ \/ X: |
BIGWOOOL 发表于 2010-1-4 23:21
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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.