1. Excavate the top 4-6 ins layer of dirt and fill back up with new topsoil of good quality. 8 s, l& r- P$ p; i$ k) E2. 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 ! C& a3 a0 C& |3 y0 p1 G0 U2 Z# t
3# ceramistpalace : A* R G3 I" X1 J/ P
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% U5 i m1 g& ]+ f! P/ e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。$ w7 `6 o' f' ^+ n+ B* s
BIGWOOOL 发表于 2010-1-4 23:21
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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.