有机农场用“有机肥料”

有机农场用“有机肥料”，

"Organic farmers can and do use composts of plant and animal materials and uncomposted plant materials are allowed under Federal NOP (National Organic Program) guidelines. Raw manure can be used, but must be applied at least 120 days prior to harvesting most crops."

Raw manure can be used... I always wonder about this.

所有跟帖： 

• 是吗? 看来是要慎用有机蔬菜了 -吃与活- ♂ (0 bytes) () 11/21/2014 postreply 08:16:16

• at least 120 days prior to harvesting most crops -薛成- ♂ (0 bytes) () 11/21/2014 postreply 08:17:44

• That's a good point -Lily168- ♀ (0 bytes) () 11/21/2014 postreply 08:19:52

• 那么多数蔬菜生长需要多长时间呢 -吃与活- ♂ (0 bytes) () 11/21/2014 postreply 08:25:59

• 一般美国都用完全发酵的肥料，因为他们有足够的资源。我不担心。外国就难说了。 -薛成- ♂ (0 bytes) () 11/21/2014 postreply 08:31:42