1. Excavate the top 4-6 ins layer of dirt and fill back up with new topsoil of good quality. 6 S9 Q- w7 k* w4 x' q/ N. j* g2. Reduce the use of chemical fertilizer and use organic one instead.
3# ceramistpalace ' u& O' a! E6 F$ Z 1 ~2 `; b3 Q8 B9 R / J% V1 F3 h: m0 V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。. B- T' y2 w' g: Z
BIGWOOOL 发表于 2010-1-4 23:21
1 U# x6 S/ e5 R0 H9 g* lI 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.