nutrient requirement rate

例句：

1. 1. The plant requiresa certain amount of nitrogen togrow properly.
   植物需要一定量的氮来正常生长。
2. 2. The food industry is constantly seekingto improve the nutrient requirement rateof their products.
   食品工业一直在寻求提高其产品的营养成分需求率。
3. 3. The researchteam found that the nutrient requirement rate for thiscrop was higher than expected.
   研究小组发现这种作物的营养成分需求率比预期的要高。