1. Excavate the top 4-6 ins layer of dirt and fill back up with new topsoil of good quality. . [' ?4 L; G0 X" ?) F2. 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 ' n8 i, Z3 p; q1 P2 L7 V) V
3# ceramistpalace 6 g4 B% q3 b0 w. v5 g# R4 L! L 6 V7 F+ _* |' i' ?# B* i [8 u) \* l! L: H5 L4 {( ^" L8 x1 p
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。 8 q9 d6 q6 k+ C s2 j2 Q8 MBIGWOOOL 发表于 2010-1-4 23:21
, u) o" `( q5 wI 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.