Phosphorus ( P ) is one of essential macronutrients for plant growth and development .

磷是植物生长发育不可缺少的大量营养元素之一。

Phosphorus ( P ) is one of essential macronutrients for plant growth and development .

磷是植物在生长发育中所必须的大量元素之一。

The most important of these nutrients are the macronutrients : proteins , carbohydrates and fats .

这些营养物质中最重要的就是人体所需的大量的营养物质：各类蛋白质、碳水化合物、各类脂肪。

Effects of Boron , Molybdenum , Zinc and Macronutrients on the Yield and Quality of Alfalfa

硼、钼、锌与大量元素配施对紫花苜蓿草产量和品质的影响

Mass fraction and bioavailability of macronutrients of 21 ex-situ conservation rare plants in Wuhan Botanical Garden

武汉植物园21种迁地保护珍稀植物大量营养元素质量分数和吸收系数