Its composition containing: organic humus and nitrogen, phosphorus, potassium, calcium, magnesium, sulfur and iron, copper, zinc, boron, molybdenum and other trace elements.
它的成份含﹕有机腐殖质和氮、磷、钾、钙、镁、硫及铁、铜、锌、硼、钼等多种微量元素。
They found no noted differences between conventional and organic crops with regard to vitamin c, magnesium, calcium, potassium, zinc and copper content.
他们发现在传统作物与有机作物中，维生素c，镁，钙，钾，锌和铜的含量没有明显差异。
An inorganic element, such as calcium, iron, potassium, sodium, or zinc, that is essential to the nutrition of human beings, animals, and plants.
无机元素无机元素，如铝、铁、钾、钠或锌，为人类、动物和植物营养必不可少的成分。
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