Calcium is an essential nutrient for plant growth. Almost 80% of fruit trees and vegetables have a large demand for calcium. Root development and stem and leaf growth require a lot of calcium. Therefore, if you want to grow your own fruit, you will sell it at a high price. So, it is very important to make calcium supplements. Let's take a look at the effects of calcium on crops and fruit trees.
1, the importance of calcium
The importance of calcium is that calcium participates in the composition of the cell wall in the form of pectin calcium. Calcium deficiency, cell wall can not form, affect cell division, hinder the formation of new cells, it is said that the fruit is not smashed, it is closely related to calcium. In addition, calcium also affects the growth of root tips, shoot meristems, affects long growth, firm wood, seed germination and seed and root development. Calcium can prevent the extravasation of substances in cells and liquid cells to keep the membrane from decomposing and prevent the fruit from becoming aging.
2, the harm of calcium deficiency
The leaves are deficient in calcium, the leaves are light, the young leaves and the leaves are green, and then there are needle-sized brown spots at the near leaf margin. As the leaves grow, the leaves are scorched, the leaves are curled downward, and the tops of the grapes grow. Point dead.
Calcium has a great effect on the fruit. Calcium is related to the enzymes in the plant, and it prevents the outflow of the contents of the pulp cells and the entry of external bacteria into the cells and breeding. Calcium is involved in the regulation of enzyme activity in cell wall synthesis and degradation, reducing the decomposition of cell walls and maintaining fruit firmness and quality.
3. Types and methods of use of calcium fertilizer
(1) Nitrate calcium fertilizer
The main representatives are calcium nitrate, calcium ammonium nitrate, calcium magnesium nitrate, calcium potassium nitrate, etc., which are the mainstream calcium supplements on the market. The advantages are the price, the water solubility is good, the use is convenient; the neutral fertilizer does not cause the acidification of the soil, the nitrate nitrogen absorption inside is faster, the effect can be reflected from the blade faster, and of course there are defects: calcium nitrate Calcium ions are difficult to move, especially when sprayed, they must be sprayed evenly on the fruit to absorb, and can not be mixed with boron, potassium dihydrogen phosphate or high-phosphorus water-soluble fertilizer, and reaction will produce precipitation and affect fertilizer efficiency.
(2) Amino acid calcium
Amino acid calcium is also called amino acid chelated calcium, which is the use of amino acids as a chelating agent to chelate calcium ions. Plants can directly absorb calcium by directly absorbing amino acids. Compared with traditional calcium nitrate series, the absorption rate is high and the mobility is better. . Another reason for the good effect of amino acid calcium is that the amino acid itself can have a good effect on the accumulation of sugar, taste and carbohydrate in the leaves and fruits.
(3) EDTA calcium
Calcium EDTA is a calcium fertilizer chelated with EDTA. It can be said to be the highest calcium fertilizer for absorption. It has a white fluffy powder shape and can be pinched by hand. It has the feeling of “squeaking and squeaking†of the foot. EDTA calcium is very stable, no It is easy to react with phosphate and sulfate, and has good mixing property. It also solves the reaction of calcium and boron mixed reaction. It can conduct up and down with the movement of EDTA in plants. Because the raw materials are expensive, the calcium content is not very high. About 10%, the market has less EDTA calcium, and more manufacturers use it as a raw material to produce chelated calcium fertilizer.
(4) Calcium alkoxide
Calcium alkoxide is a calcium fertilizer chelated with various sugar alcohols such as mannitol and xylitol. More than 90% of the finished calcium sugar calcium is blue transparent liquid, which is significant, at 1,4-1,5 Left and right, it can be said that it is the best mobile calcium fertilizer. Sugar alcohol itself is the active constituent of plant protoplasts. It is widely found in plant phloem. Plants regard sugar alcohol as “self-humanâ€, which can be transported in the body without barriers. It can be transmitted both up and down in the xylem and phloem, and it is the only one that can conduct up and down. Calcium fertilizer. In recent years, the fire has spread all over the country, and the price has become more and more close to the people.
(5) Other calcium fertilizer
Other calcium-containing fertilizers such as calcium magnesium phosphate, superphosphate, quicklime, etc. are gradually no longer used, and the use of silicon calcium and calcined oyster shell powder to regulate acidic soil and calcium supplementation, calcium absorption and utilization are generally used, but the soil effect is improved. not bad.
The above is about the introduction of calcium fertilizer. Regarding the use of calcium fertilizer, what else do you have to add?
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