1. Excavate the top 4-6 ins layer of dirt and fill back up with new topsoil of good quality. ; z. M- v+ v4 o2. 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 ; T+ E. u+ J0 c- w2 v
3# ceramistpalace 9 ~* V$ _2 x% `5 P; a$ n7 w
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1 j6 q( Z3 _- B. O0 K' H5 p. [% u" M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。 ; v: D' i C4 n- R+ Z" Q" ]2 R' m* aBIGWOOOL 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.