1. Excavate the top 4-6 ins layer of dirt and fill back up with new topsoil of good quality.# P0 p0 _! K" [$ t7 Y$ b
2. Reduce the use of chemical fertilizer and use organic one instead.
1 C. Z8 i1 q. H, @8 a : ^/ l2 _+ ]" S! j# Y, D ^; Q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。3 X; b% n% A, ]- l5 ~& p. x
BIGWOOOL 发表于 2010-1-4 23:21
9 g3 D" ~4 k/ l3 Q; @" ?1 ~' }. uI 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.