一、什么是作物营养诊断农作物在生长发育过程中,需要吸收必须的营养元素,(如碳、氢、氧、氮、磷、钾、钙、镁、硫、铁、硼、锰、铜、锌、钼等)。这些元素在作物体内的含量多少不一,生理作用各异。但各种元素的作用是不能代替的,作物生长过程中,缺少任何一种营养元素,都将使作物的生命活动不协调,生长停滞,产量下降。作物营养诊断就是通过作物外部形态的观察和测定作物汁液营养元素的含量,从而判断作物养料丰缺的方法,其目的在于: First, what is crop nutrition diagnosis Crops in the growth and development process, the need to absorb the necessary nutrients, (such as carbon, hydrogen, oxygen, nitrogen, phosphorus, potassium, calcium, magnesium, sulfur, iron, boron, manganese, copper, zinc , Molybdenum, etc.). The content of these elements in the body vary, different physiological roles. However, the role of various elements can not be replaced. In the process of crop growth, the lack of any kind of nutrient elements will make the life activities of crops uncoordinated, the growth will stagnate and the output will drop. Crop nutrition diagnosis is to observe the appearance of crops and determine the content of nutrient elements in crop juice to determine the abundance of crop nutrients method, which aims to: