一、实验目的: 1、掌握如何确定每人每日营养素的需要量 2、掌握食谱的计算方法及全评价 3、综合1和2,提出膳食建议

一、实验目的: 1、掌握如何确定每人每日营养素的需要量 2、掌握食谱的计算方法及全评价 3、综合1和2,提出膳食建议

目的和意义 1、可按照各类人群的营养素推荐供给量,具体落实到用膳者的每日膳 食中,使得人们可以按照需要摄入足够的热能和营养素。 2、结合当地食物的品种、生产季节、经济条件和厨房烹饪水平合理选 择食物

中国农业大学：《植物营养学》课程教学资源（PPT课件）钙、镁、硫、硅肥料

中国农业大学：《植物营养学》课程教学资源（PPT课件）施肥与作物品质和环境

Aims of this lecture Summarize properties of the rhizosphere, especially Gradients in Nutrient concentration Redox potential Exudates Microbial activity Non-infecting rhizosphere microorganisms Infecting rhizosphere microorganisms that are relevant to plant mineral nutrition red from H Marschner:

Concept of plant nutrition Plant nutrition is a term that takes into account the interrelationships of mineral elements in the growth medium as well as their role in plant growth

The principles of application fertilizers Law of the Minimum: the crop's yield is restricted by the lack of one element, even Mg- al Zn S though there may be sufficient quantities of all the

一、能量的來源及能值 二、人体能量消耗的构成 三、能量消耗的测定方法 四、DRIs及食物来源

Soil fertil Soil fertility is the characteristics of soil that enables it to Provide nutrients in adequate amounts in adequate time In appropriate balance for growth of particular plant(s)