1. Excavate the top 4-6 ins layer of dirt and fill back up with new topsoil of good quality. $ W, \5 ] o. z7 Y1 S0 `7 c7 Q2. Reduce the use of chemical fertilizer and use organic one instead.
3# ceramistpalace 7 l; Y" L4 ~ @) L' ^
+ k s: R$ l4 t( w( r
0 H) C; i' k6 d' K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 a4 z& I; U, Y8 Z* l4 F
BIGWOOOL 发表于 2010-1-4 23:21
4 X. X& Q* j$ l! y/ Q; {4 d, _, _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.