1. Excavate the top 4-6 ins layer of dirt and fill back up with new topsoil of good quality.4 x. O3 V# P3 V9 M. C( j+ g7 u
2. Reduce the use of chemical fertilizer and use organic one instead.
3# ceramistpalace ' s% {) g; m- q, C5 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。* R! j! B) Q3 ^5 E* ]- }
BIGWOOOL 发表于 2010-1-4 23:21
4 d+ D3 G. ^4 m/ s4 [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.