1. Excavate the top 4-6 ins layer of dirt and fill back up with new topsoil of good quality.$ x0 ^9 ?- V3 |/ |" \* J
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 2 K+ s. y: r$ a( e R1 Z X
3# ceramistpalace ) g9 P3 L# g0 ?) E
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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。6 J( G6 O' ^) _3 D3 |
BIGWOOOL 发表于 2010-1-4 23:21
% t3 e/ ~: _1 ?6 e9 r HI 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.