1. Excavate the top 4-6 ins layer of dirt and fill back up with new topsoil of good quality. 2 P0 R& K8 v8 s W2 {) v- m" Z1 z2. 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 4 X$ o. D* G7 O
3# ceramistpalace 6 o( Q1 ?0 \" K! t7 n6 r- A% e+ P9 H- \) x7 j
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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。- |8 ^- b/ s- Q, E
BIGWOOOL 发表于 2010-1-4 23:21
1 P2 O9 I& O9 s7 Q9 J! _2 NI 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.