1. Excavate the top 4-6 ins layer of dirt and fill back up with new topsoil of good quality. ; M, j7 _/ N1 t7 \" v% ^# f3 h2. Reduce the use of chemical fertilizer and use organic one instead.
2 d/ D2 E. j; u! l7 z t 7 u3 T9 ?5 o1 e$ v( T# N% B M ^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 P4 c; c4 ~4 m! ^$ J8 b4 BBIGWOOOL 发表于 2010-1-4 23:21
0 U, ^/ I/ C" ZI 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.