1. Excavate the top 4-6 ins layer of dirt and fill back up with new topsoil of good quality.! r! l; j. S7 r% o8 {
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 4 {! ?% D9 R* a u
3# ceramistpalace ) J: K8 F: q: ?" w# h& U
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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。4 f6 z' k g3 F1 W; w- ~4 _3 U8 k
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.