1. Excavate the top 4-6 ins layer of dirt and fill back up with new topsoil of good quality. " V7 R3 T* D& T: x; a2. Reduce the use of chemical fertilizer and use organic one instead.
3# ceramistpalace 9 }; f' k( E4 U3 O6 ^# v5 s' {$ V
: K5 x# U$ s+ v- ^1 I
, [# z# q) {4 z8 J7 U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。5 `8 d' ~: F( ]/ C
BIGWOOOL 发表于 2010-1-4 23:21
5 r0 a6 J/ S* U$ a# F! k/ o0 o2 II 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.