将含铁浓度为0～22.4mg/L液的半强度Hoaglaab营养液用于日本薄荷(Menthaarvensis)的生长,以确定该植物缺铁时及其产生毒性时的铁含量。日本薄荷在温室中生长105天后采收,分析其叶及其它组织,以测定植物组织中的铁含量。可使日本薄荷最大程度地生长的叶最低含铁量为70～76mg/kg,导致其生长速度减慢的叶片组织铁含量上限为192mg/kg。当叶片铁含量为78～186 Half-strength Hoaglaab nutrient solution with 0-22.4 mg / L iron concentration was used for the growth of Mentha arvensis to determine the iron content of the plant when it was iron-deficient and its toxicity. Japanese peppermint was harvested 105 days after growth in a greenhouse and its leaves and other tissues analyzed to determine iron content in plant tissues. The maximum iron content of leaves that could maximize the growth of Japanese mint was 70-76 mg / kg, resulting in a maximum iron content of 192 mg / kg in leaf tissue with slow growth. When the leaf iron content of 78 ~ 186