1. Excavate the top 4-6 ins layer of dirt and fill back up with new topsoil of good quality. ' @) O% ^/ l2 L2. Reduce the use of chemical fertilizer and use organic one instead.
! I. L8 P$ m7 ^2 W' O( @/ g0 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。 ' [) |! o. f J2 W1 _7 h) R9 w; eBIGWOOOL 发表于 2010-1-4 23:21
2 W$ i$ W1 t V: [0 t/ }. W8 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.