Unverified85% confidenceDecision RuleTime unknown
正宗焦作垆土铁棍山药表皮呈暗红色（俗称'红头'），带有明显的'铁锈斑'和不规则细密根须；沙土种植的铁棍山药表皮偏黄白、光滑、须根少，品质和药用价值次之
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85%
Confidence
Long-term
Relevance
-
First Seen
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