macronutrient

详细解释:【机】 大量营养剂

详细解释：

mac.ro.nu.tri.ent

n.（名词）
An element, such as carbon, hydrogen, oxygen, or nitrogen, required in large proportion for the normal growth and development of a plant.
大量营养素：满足植物正常生长和发育而需要的大量元素，如碳、氢、氧或氮等