1. Calcium (Ca) is present in the form of calcium pectate in crops and is a component of the colloidal layer in cell walls. Calcium has a certain influence on nitrogen metabolism in vivo, and is an auxiliary factor of some enzymatic activities, enhancing the activity of enzymes related to carbohydrate metabolism. Calcium can neutralize organic acids formed in the process of crop metabolism, regulate pH in crops and reduce the dispersity of protoplasmic colloid, which is conducive to normal metabolism of crops. In addition, calcium can antagonize some ions to eliminate the toxic effects of some ions.
2. Iron (Fe) is mainly concentrated in chloroplasts, which cannot be formed due to iron deficiency and is an essential element in photosynthesis. The essential cytochrome oxidase, catalase, peroxidase and so on of plant aerobic respiration are all ferric enzymes. Ferritin (Fd) is an iron-containing electron transfer protein involved in the electron transport of photosynthesis, nitrate reduction, and biological nitrogen fixation.
3. Manganese (Mn) is involved in photosynthesis. It also had an important effect on the oxidation of crops. It can activate many enzyme systems in crops, such as isocitrate dehydrogenase, malic acid enzyme and c-carboxylase. Manganese can significantly promote seed germination and early seedling growth of rice, corn, rape, etc., as well as pollen tube elongation of various crops.
4. Various components of oxidase in copper (Cu) crops, such as polyphenol oxidase, ascorbate oxidase and indoleacetic acid oxidase, play an important role in catalytic REDOX reaction. Cuprease is a component of chloroplasts, and copper is involved in photochemical reactions in green leaves. Cupraflutein plays a catalytic role in fat metabolism.
5. Zinc (Zn) is mainly involved in the synthesis of indoleacetic acid and the activity of certain enzyme systems. Zinc-containing enzymes such as glutamate dehydrogenase, malate dehydrogenase and phospholipase play a role in hydrolysis, REDOX process and protein synthesis in plants. The activity of carbonic anhydrase, which is related to the amount of zinc in the body, mainly exists in chloroplasts, which is involved in the formation of chlorophyll and plays an important role in photosynthesis and the formation of carbohydrates.
6. Boron (B) is a structural component in non-crops. It plays an important role in the operation of carbohydrates and is indispensable for the construction of crop reproductive organs. Boron can promote the differentiation process of plant meristem cells and promote the synthesis of protein and fat. Boron can improve the drought and cold resistance of crops and prevent the occurrence of physiological diseases.
7. Molybdenum (Mo) is an important component of the nitrogenase active part and plays an important role in biological nitrogen fixation. It is a component of nitrate reductase. The activity of phosphatase that hydrolyzes various phospholipids is affected. When deficient, your body has less vitamin C.
Due to the different physiological functions of these nutrients and their interactions, the normal growth and development of crops are ensured and the life cycle is realized. Although all crops contain these essential nutrients, different crops have different requirements for the number of nutrients, reflecting one of their most important nutritional characteristics.