... 11单一肥料straightfertilizer 12大量元素(主要养分)primarynutrient;macronutri-ent 13中量元素(次要养分)secondaryelement;nutrient ...
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N any substance, such as carbon, hydrogen, or oxygen, that is required in large amounts for healthy growth and development 大量营养素; 碳、氢或氧等为健康成长和发展所大量需求的物质
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