1. Excavate the top 4-6 ins layer of dirt and fill back up with new topsoil of good quality. 2 M2 _& W$ E- T3 M/ F& x0 H2. Reduce the use of chemical fertilizer and use organic one instead.
3# ceramistpalace % n& T+ ^ e: S- C9 b % n2 \: [& V! U& x" n& h) R6 E+ P, D) C3 ?+ X$ w9 E. O7 s
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。7 E# x3 u- \2 c2 p t
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.