一、作物的养分平衡作物生长发育需要吸收许多营养元素,有大量元素和微量元素,这些元素虽在植株体内的含量差异很大,但是各具有特殊的生理功能,而且彼此不能互相取代,作物如果缺乏某一种营养元素时,就不能正常地生长发育,即使其他营养元素很充足,产量也要受到影响,所以各种营养元素对作物的生长发育具有同等重要的作用。而且各种营养元素彼此间是相互联系的,相辅相成的。 First, the crop nutrient balance Crop growth and development need to absorb many nutrients, a large number of elements and trace elements, although these elements vary widely in the plant body, but each has a special physiological function, and can not replace each other, if the crop In the absence of a certain nutrient element, it can not grow and develop normally. Even if other nutrient elements are abundant, the yield will be affected. Therefore, various nutrient elements play an equally important role in crop growth and development. And a variety of nutrients are interrelated with each other, complement each other.