1. Excavate the top 4-6 ins layer of dirt and fill back up with new topsoil of good quality. ( @: i" g4 q! v' v1 w2. Reduce the use of chemical fertilizer and use organic one instead.
3# ceramistpalace / J! E' r% _0 t' @ ) m# k' I' v9 N Z9 d , q: ~& y, r; {) |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。. q; k" `% {/ F+ p4 N. O/ b; z5 C
BIGWOOOL 发表于 2010-1-4 23:21
! Z7 L& n* b# u+ V- Y2 \0 W' 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.