1. Excavate the top 4-6 ins layer of dirt and fill back up with new topsoil of good quality.- k$ d; p7 l: O1 p/ Z
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 ! o9 e' a+ p! s! C7 o b/ E9 Q
3# ceramistpalace - ]6 Y* X" d o) n 1 _' B7 R% y) d8 v" _) R5 T7 f- P! [: w) v
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; z7 \/ ]; t ?( h
BIGWOOOL 发表于 2010-1-4 23:21
# d; { S3 E2 V: F0 F9 @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.