nutrient

• These nutrients comprise the major cost of producing weaned pigs .
  这些营养物质构成断乳仔猪生产的主要费用。
• The crop and the way it is used determine the nutrients removed .
  作物种类及其利用方式决定着养分耗失的数量。
• Every individual has a physiological requirement for each nutrient .
  每个人对每种营养成分都有一种生理上的需要。
• There is still great interest in boron as an essential plant nutrient .
  迄今硼作为植物的必要营养元素仍极其重要。
• The brain is selective about which nutrients it removes from the blood .
  脑对于从血液中取走哪些营养物是有选择的。
• This is wasteful because it deprives the soil of valuable nutrients .
  这是一种浪费，因为它夺走了土壤的有价值的养料。
• The nutrient may be intercepted by the roots as they grow through the soil .
  当根系穿过土壤生长时，可以截获营养物质。
• Biological activity in a soil is influenced by soil acidity and nutrient status .
  生物的活动被土壤养分含量状况所制约。
• Nitrogen as a plant nutrient is treated in a great number of publications .
  人们对植物营养中的氮素研究已发表相当大量的报告。
• A chemical solution of nutrients is added to the water to produce food for the plants .
  在水中加一种化学营养剂作为植物的养料。