1. Excavate the top 4-6 ins layer of dirt and fill back up with new topsoil of good quality. ' j4 K8 J2 F( G9 u Y+ L; X/ `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 e. A0 e/ r; b! u. K1 m9 [
3# ceramistpalace ; ^) `9 _. F' E/ C( C. ]0 w8 i7 n, T l- B2 @$ V
% O0 ^8 f9 h' C' n$ x
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。 2 h. K. P3 `! XBIGWOOOL 发表于 2010-1-4 23:21
% d5 _" V0 ^& v" t# U
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.