The cultivated rheum required quantity has an increase for the fe, mn, co, and decrease for the zn, cu, ni element nutrition with the growth age changes.
随著生长年龄增加种植大黄对铁、锰、钴元素营养需求量有所增加，对锌、铜、镍元素营养的需求量略减。
Ca potentiators effect of ca, Cu, Mn, Mg, fe and Zn contents and quality in japonica rice were studied.
利用粳稻品种探讨了钙增效剂对稻米中钙及铜、锰、镁、铁、锌积累和品质的影响。
And the order of element concentration was first n, next K, then Ca, P, Mg, Fe, Mn, Zn and Cu in order.
在元素含量的顺序上是氮最高，钾次之，随后依次为钙、磷、镁、铁、锰、锌、铜。
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