1. Excavate the top 4-6 ins layer of dirt and fill back up with new topsoil of good quality.1 i8 E9 Y6 Y4 m! ^* J
2. Reduce the use of chemical fertilizer and use organic one instead.
& ^+ E' V2 P4 j4 J3 [& Y7 y3 A8 _8 g 2 a7 d4 N4 B# M/ q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。 f' X m7 q8 Y( }/ G1 V' z$ |+ E
BIGWOOOL 发表于 2010-1-4 23:21
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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.