Magnesium Oxide Fertilizer - Nutrition
The magnesium content varies among different plants. Most of the magnesium in the early growth stage is present in the leaves. When it is in the fruiting stage, it is transferred to the seeds and stored in the form of phytate. Magnesium is highly mobile in the phloem, and magnesium stored in vegetative or other organs can be redistributed and reused. In normal growing plant leaves, approximately 10% of magnesium is bound to chlorophyll a and chlorophyll b, 75% of magnesium is bound to ribosomes, and the remaining 15% is free or bound to various magnesium activatable enzymes. Or the cation binding site of the cell.
1. Chlorophyll synthesis and photosynthesis
The main function of magnesium is as the central source of chlorophyll a and chlorophyll b porphyrin ring, which plays an important role in chlorophyll synthesis and photosynthesis. After the magnesium atom is combined with the chlorophyll molecule, it has the necessary structure to absorb the photon, in order to effectively absorb the photon to carry out the photosynthetic reaction.
2, protein synthesis
Another important physiological function is the bridging element that binds to the ribosomal subunits, ensuring a stable structure of the ribosome and providing a site for protein synthesis. About 75% of the magnesium in leaf cells participates directly or indirectly in protein synthesis through the above-mentioned effects. Magnesium is essential for the stabilization of ribosomal particles, particularly polysomes, and is also required for functional RNA protein particles to synthesize proteins in sequence with amino acids and other metabolic components.
3. Activation of the enzyme
A series of enzymatic reactions in plants require magnesium or are dependent on magnesium for regulation. Magnesium forms a bridge between the pyrophosphate structure of ATP or ADP and the enzyme molecule. The substrate for most ATPases is Mg-ATP. Magnesium is more effective than other ions (such as manganese) in activating phosphokinase.
4, plant demand for magnesium and symptoms of magnesium deficiency
When plants are deficient in magnesium, their outstanding performance is a decrease in chlorophyll content and chlorosis. Due to the strong mobility of magnesium in the phloem, the symptoms of magnesium deficiency are often first manifested on the old leaves and gradually develop into new leaves. In the absence of magnesium, the plants are short and grow slowly. Dicotyledonous plants are chlorotic between veins when they are deficient in magnesium, and gradually change from pale green to yellow or white. There are also brown or purple-red spots or streaks of different sizes. When magnesium is severely deficient, necrosis occurs in the whole leaves. When the gramineous plants were deficient in magnesium, the green chlorophyll accumulation in the leaves of the leaves showed dark green spots, and the rest was pale yellow. When the magnesium was severely deficient, the leaves faded and streaked, especially the necrotic spots appeared at the tip of the leaves.
Magnesium deficiency has a greater impact on the degradation of starch in chloroplasts, the transport of sugar and the unloading of sucrose in phloem, while the effect on photosynthesis itself is relatively small. Many metabolic processes require high-energy phosphates, so magnesium has a great impact on energy transfer. Magnesium deficiency reduces the rate of transport of photosynthetic products from "sources" (such as leaves) to "libraries" (such as roots, fruits, or storage tubers). Magnesium deficiency has a much greater effect on root growth than on the ground, resulting in a lower root to shoot ratio.
Magnesium deficiency is likely to occur in sandy soils, acidic soils, and soils with high K+ and NH4+ contents. Sand is not only high in magnesium itself, but also leaching is more serious; in addition to leaching of acidic soil, the antagonism of H+, Al3+ plasma is also one of the causes of magnesium deficiency; the absorption of Mg2+ by high concentration of K+ and NH4+ is Very strong antagonistic effect. Therefore, the application of magnesium fertilizer, soil improvement, and balanced fertilization are necessary to correct magnesium deficiency.
FENGCHENG CITY HEQI BRUCITE MINING CO., LTD is registered in Dandong city, Liaoning province. Sufficient talent reserves, proper environmental governance, convenient transportation and communication.We are mainly engaged in the purchase, processing and sales of mineral products.
Main products: magnesium hydroxide flame retardant and brucite powder. Complete specifications of products, welcome to visit our factory guidance.
Since its inception, with "business integrity, standard services, sustainable development, commitment to the community" is the principle of the company. Our company has a good reputation, which is oriented by customers' demands, strives for survival by quality reputation, relying on high-quality products and good services.
