1. Excavate the top 4-6 ins layer of dirt and fill back up with new topsoil of good quality. 8 ]5 A+ r k5 F) ]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 o5 c: A( t" w B
3# ceramistpalace 0 p* R8 |) T" X o* s2 E1 P
: {; M: q2 q, e$ { 1 j. ?$ l0 l9 @ [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。6 C0 }9 q0 r( f# ?" x4 E
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.