1. Excavate the top 4-6 ins layer of dirt and fill back up with new topsoil of good quality. 0 K) U. j7 G6 R% M+ P+ y% B3 u2. 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 # Z- W0 Y8 Z0 s' E3 V
3# ceramistpalace 4 J3 o3 T' X+ u5 `
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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。 ; g( A' }, m' n3 S. m0 s, z4 LBIGWOOOL 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.