锰是植物和动物必需的微量元素之一,供应不足时,会影响生长和发育;但在过量情况下,亦能引起某些生理毒害。植物对锰的吸收主要来自土壤,而食草家畜和人类,则从植株和子实中摄取所需要的部分锰,因而土壤中锰的含量与植物的生长和人体健康有着密切的关系。钴在植物固氮中起着重要的作用,但 Manganese is one of the trace elements essential for plants and animals. Inadequate supply can affect growth and development; however, it can cause some physiological toxicities in the event of excess. Plants absorb manganese mainly from the soil, while herbivorous livestock and humans take up some of the required manganese from plants and fruits, so the content of manganese in the soil is closely related to plant growth and human health. Cobalt plays an important role in nitrogen fixation in plants, however