| 释义 |
微量元素wēiliàng yuánsù植物体除需要钾、磷、氮等元素作为养料外,还需要吸收极少量的硼、砷、锰、铜、钴、钼等元素作为养料,这些需要量极少的元素叫做微量元素。{trace element; chemical element, such as boron, arsenic, manganese, copper, cobalt, and molybdenum, required in minute quantities other than such nutrients as kalium, phosphor, and nitrogen, by an organism to maintain proper physical functioning} |