1. Excavate the top 4-6 ins layer of dirt and fill back up with new topsoil of good quality.: T6 J, a, Q3 U) P! q
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 6 ?, b1 P9 K' ^( D: W8 M1 [$ r
3# ceramistpalace & e; ]& J7 o1 ?+ w5 U 0 {6 h y) V, X/ a5 v, w) h2 i8 a+ K; A) K- o
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。- \: A$ H4 ~8 w4 [: M& d3 K% f
BIGWOOOL 发表于 2010-1-4 23:21
8 p) q9 B, e) L6 {% Q0 b* [) g" |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.