1. Excavate the top 4-6 ins layer of dirt and fill back up with new topsoil of good quality. . l8 w' y0 x4 D' d) W: p2. Reduce the use of chemical fertilizer and use organic one instead.
3# ceramistpalace : ]1 X- H8 s" w" w 9 w" m, n! b( q. [1 x 6 Z3 S6 r$ u. r' F" o, 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。) p$ E9 G* e# @3 j% p& F: m
BIGWOOOL 发表于 2010-1-4 23:21
7 w1 j( k& i# m& e' [1 @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.