What inorganic salts do plants need, and the three major inorganic salts that plants need

Mainly nitrogen, phosphorus, potassium, and a variety of trace elements.

The three major inorganic salts that plants need are: nitrogen-containing, phosphorus-containing and potassium-containing inorganic salts.

Nitrogen, phosphorus and potassium are among the various nutrients (carbon, hydrogen, oxygen, nitrogen, phosphorus, potassium, calcium and magnesium) that plants need, phosphorus and potassium are the nutrients that plants need and take away more during harvesting, and the amount they return to the soil in the form of residues and roots is not much. Therefore, it is often necessary to supplement these nutrients with fertilizers. The nitrogen, phosphorus and potassium mentioned in middle school textbooks roughly correspond to three parts: leaves, rhizomes.

Nitrogen is a component of proteins, nucleic acids and chlorophyll in plants, chlorophyll a and chlorophyll b. All are nitrogenous compounds. Green plants carry out photosynthesis to convert light energy into chemical energy, and inorganic matter into organic matter and oxygen, with the help of chlorophyll.

Glucose is the raw material for the synthesis of various organic substances in the plant body, and chlorophyll is the factory where the leaves of the plant make "food". Nitrogen is also a component of the vitamin and energy systems in plants.

Phosphorus is an important part of bones and teeth. Severe phosphorus deficiency can lead to anorexia, anemia, etc. The Chinese Nutrition Society recommends that the appropriate daily intake of phosphorus for adults over 18 years old is 700 mg.

Common foods containing phosphorus are lean meat, eggs, milk, organ meats, kelp, peanuts, nuts, and whole grains.

Basic introduction to inorganic salts:

Inorganic salts (minerals), that is, salts in inorganic compounds, generally only account for 1% of the fresh weight in biological cells, and more than 20 kinds have been found in the human body, among which a large number of elements are calcium Ca, phosphorus P, potassium K, sulfur S, sodium Na, chlorine Cl, magnesium Mg, trace elements are iron Fe, zinc Zn, selenium Se, molybdenum Mo, fluorine F, chromium Cr, cobalt Co, iodine I, etc.

Although the content of inorganic salts in cells and the human body is very low, but the effect is very large, if you pay attention to the diversification of the diet, eat less animal fat, eat more brown rice, corn and other coarse grains, do not eat too much refined flour, you can maintain the normal level of inorganic salts in the body. Inorganic salts are mineral nutrients present in the body and food, and most inorganic salts in cells are in ionic form and are composed of a combination of organic and inorganic matter.

More than 20 essential inorganic salts have been found in the human body, accounting for about 4 to 5% of the body's weight. Among them, the content is more calcium, phosphorus, potassium, sodium, chlorine, magnesium, sulfur seven kinds; The daily dietary requirement is more than 100mg, which is called a macroelement.

With the progress of modern analysis technology, the use of atomic absorption spectroscopy, neutron activation, plasma emission spectroscopy and other trace analysis methods, it was found that iron, iodine, copper, zinc, manganese, cobalt, molybdenum, selenium, chromium, nickel, silicon, fluorine, vanadium and other elements are also necessary for the human body, and the daily dietary requirement is g mg called trace elements.

Categories: Education Science >> Entrance Examination >> Analysis: Elements necessary for all plants.

Carbon (C), Hydrogen (H), Oxygen (O), Nitrogen (N), Phosphorus (P), Potassium (K), Sulfur (S), Calcium (Ca), Magnesium (Mg), Boron (B), Iron (Fe), Copper (Cu), Zinc (Zn), Manganese (Mn), Molybdenum (Mo), Chlorine (Cl).

Some of the elements necessary for plants.

Sodium (Na), Cobalt (Co), Vanadium (V), Silicon (Si).

Both inorganic and organic salts have different effects on plants. Inorganic salts refer to salts that do not contain carbon elements, such as potassium salts, nitrogen salts, phosphate dates, etc., which are inorganic elements necessary for plant growth and metabolism. Organic salts are a class of salts containing carbon, such as amino acids, proteins, sugars, etc., which are important organic compounds in plants.

Both inorganic and organic salts are very important in the growth of plants. Inorganic salts play a key role in the growth and development of plants, such as potassium can promote the growth of plants, phosphorus can promote the development of plant roots, and nitrogen is an important part of protein synthesis in plants. Therefore, in the process of plant growth, the ** of inorganic salts is very important.

Organic salts are important organic compounds in plants, such as proteins, nucleic acids, sugars, etc., which are important components of plant cells and tissues. At the same time, organic salts also provide energy and nutrients to plants.

Therefore, both inorganic and organic salts are very important nutrients for plants. Stools allow them to play different roles in the growth and development of plants. In general, plants need the right amount of inorganic and organic salts to maintain their normal growth and development.

Inorganic salt ions are better for plants. Inorganic salts can generally be soluble in water, plants can be actively transported and transpired by the roots, and Yingling will transport inorganic salt ions to various parts of the country, so as to obtain the required nutrients.

It should be an inorganic salt, which is relatively better absorbed and relatively cost-effective.

Ca: Calcium can be used as a bridge between the phosphate group of phospholipids and the carboxyl group of proteins in biological membranes, thus maintaining the stability of membrane structure. In addition, calcium in the cytosol and soluble proteins form calmodulin, which acts as a "second messenger" in metabolic regulation.

mg: Mainly found in young organs and tissues, and concentrated in seeds when plants mature. Magnesium ions can activate various phosphomutases and phosphokinases during light and respiration.

S: Sulfur deficiency in plants will lead to green deficiency (initiated from mature and young leaves), dwarfing, accumulation of anthocyanins, etc. b：

When boron is deficient, the anthers and filaments atrophy, the velvet layer tissue is destroyed, and the pollen is stunted. Boron also has the effect of inhibiting the formation of toxic phenolic compounds. mn：

Manganese ions are activators of dehydrogenases, decarboxylases, kinases, oxidases, peroxidases, etc. in cells, especially affecting glycolysis and the tricarboxylic acid cycle. Manganese makes the water in photosynthesis crack into oxygen. When manganese is deficient, there is a lack of green between the leaf veins (young leaves or old leaves appear first), accompanied by the generation of small necrotic spots.

zn: Zinc is an essential element for chlorophyll synthesis. When the zinc is insufficient, the stem of the plant is short, the lotus cluster, the leaves are small and deformed, and the leaves lack green.