Plants mainly absorb mineral elements through the root system, and various plants absorb mineral elements and each has its own characteristics, mainly in the following aspects: (1) The relationship between roots absorbing mineral elements and absorbing water. Mineral elements can only be absorbed by plants if they are dissolved in water. Water directly affects the absorption and transport of mineral elements, but the two are not directly proportional to each other, and each has its own independence. (2) The roots of plants have selective absorption of mineral elements. The amount of salt ions absorbed by the root is not proportional to the ions in the solution, and even the anions and cations of the same salt enter the plant in different proportions, so that the composition and pH of the nutrient solution gradually change. (3) Antagonism between single salt toxic ions. Any plant, such as a single-salt nutrient solution, cannot grow. It is called a single-salt poison. If a small amount of other salts is added to it, the single-salt can be eliminated and the ions can eliminate each other's poison. The phenomenon is called antagonism. Therefore, when formulating and selecting a nutrient solution, the nutrient solution formula should be selected according to the characteristics of the different species. Band Aid,Waterproof Band Aids,Medical Health Band-Aids,Non-Woven Waterproof Band-Aids Shaoxing Weijian Medical Supplies Co.,Ltd. , https://www.wetourmedical.com