Unverified80% confidenceDecision RuleTime unknown
小面积盆栽建议买小规格（500g以内），硫酸亚铁开封后接触空气易氧化成硫酸铁失效，大包装用不完会浪费；地栽调酸才需考虑袋装硫磺粉的性价比
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80%
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Long-term
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