1. Excavate the top 4-6 ins layer of dirt and fill back up with new topsoil of good quality. 2 p9 z- d t. Y1 G0 h9 n: T2. Reduce the use of chemical fertilizer and use organic one instead.
3# ceramistpalace , n) m9 X( }+ |- I9 J" i/ @$ I7 k, f1 d9 q2 h
Z- G( Y& I |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。1 j6 u) I6 r8 R2 z
BIGWOOOL 发表于 2010-1-4 23:21
# P# H' b7 v# Y# k1 Y; L' \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.