1. Excavate the top 4-6 ins layer of dirt and fill back up with new topsoil of good quality. 9 s! m5 X. s0 X9 ]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 * s$ m. D& y& k3 M
3# ceramistpalace + \ h% ]: c* B" I5 Z! i . P- f# A8 Y' m$ L' P " `: @+ z b- W+ C0 M1 c$ a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。 9 A4 {" x; d2 pBIGWOOOL 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.