| 释义 |
mac·ro·nu·tri·ent AHD[măk'rō-no͞o′trē-ənt, -nyo͞o′-] D.J.[ˌmækrəʊˈnuːtriːənt, -ˈnjuː-]K.K.[ˌmækroˈnutriənt, -ˈnju-]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
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