What is the characteristic of chelation fertilizer of another industrial revolution in which chelate fertilizer is called fertilizer?
Since the 21st century, China's medium and micro-fertilizers and functional fertilizers have entered a stage of rapid development. There are more and more new types of products. From inorganic salts and organic acid salts to chelated micro-fertilizers, product appeals have entered a stage of high stability, safety and high efficiency. In the case of local soil deficiency, medium and trace elements are added, which effectively improves the utilization rate of fertilizer. Most of the medium and trace elements used in China are simple inorganic salts, and the utilization rate is limited.
Why is chelated fertilizer expensive?
In the inorganic activity, once the trace elements enter the fertilizer and are applied to the soil, most of them will lose their activity and can be absorbed by the plants. Therefore, even if the balanced fertilization and balanced fertilization are not balanced by the crops, this is why the soil has been measured. Balanced fertilization, but crops still suffer from symptoms of deficiency.
In order to solve this contradiction, EDTA, citric acid, fulvic acid, tartaric acid and the like were first used as chelating agents to form a chelate compound of trace elements, which effectively improved the stability of trace elements and improved the utilization rate of fertilizers. However, the above-mentioned chelating agents are costly, and it is difficult to accept and use this high-priced fertilizer in the absence of farmers' awareness of the full-element balanced fertilizer.
In recent years, there are trace element chelates in the use of waste protein, active humic acid and amino acids to produce inexpensive amino acids. The production cost is 8%-10% of the trace element chelate in EDTA, even if 2% is added to the compound fertilizer. -3%, the cost is only increased by 60-80 yuan / ton, and the utilization rate of this compound fertilizer can be increased by 10% -20%, compared with the simple N, P, K ternary compound fertilizer, increase production by 10% -25 %, in areas where there are serious shortages of trace elements in individual areas, it can reach more than 30%, and the effect is very obvious.
Since the amino acid itself can be directly absorbed by plants, it stimulates plant growth and is directly used by plants without photosynthesis; when used as a chelate, it can protect metal ions from side reactions with other substances, and protects metal ions from plants. After the desired part, it is also absorbed and utilized by crops. Therefore, the trace element chelate in amino acid is an organic micro-fertilizer with excellent performance, low price and moderate chelation constant, which can effectively solve the contradiction between balanced fertilizer and balanced absorption of crops. .
Although many companies are committed to reducing the cost of chewing fertilizer production, chelated fertilizers are still more expensive than other similar fertilizers as new high-end fertilizers. Chelating fertilizer is based on high-quality chelating agent and is equipped with a variety of expensive medium and trace elements. It is more conducive to soil and plant utilization than compound fertilizer and other Guangpu fertilizers, and has more prominent fertilizer effects.
Prevent the antagonism of trace elements
Chelates are chemically called complexes, which are cyclic structures formed by the attachment of a macromolecular ligand to a central metal atom. Organic molecular compounds that can chelate with metal ions are called chelating agents, or ligands.
The fertilizer produced by the secondary chelation of the chelating agent with the essential micronutrients (such as calcium, magnesium, sulfur, copper, zinc, molybdenum, etc.) required by the plant is called double chelated fertilizer or chelated medium trace element fertilizer. In recent years, chelation technology has been extended to new functional elements such as humic acid.
Domestically produced trace element fertilizers are mainly multi-element, while imported ones are mostly single-chelating and chelated. The domestic micro-fertilizer product components are difficult to reflect the differences in crops, soils, and planting systems, while the emphasis is on the pursuit of comprehensive nutrient types. The proportion of nutrient proportions in products is not strictly scientific.
The problem of mitigating medium and trace elements is a key issue related to the efficiency of multi-component fertilizers. The existing medium and trace element fertilizers are generally added with soluble inorganic salts. The antagonism of each element will greatly reduce the fertilizer efficiency and affect the absorption effect of the plants.
Developed countries such as the United States use EDTA, citric acid and other chelating agents to effectively prevent antagonism, but EDTA is costly and not suitable for China's national conditions. Therefore, research and development of chelating agents suitable for China's national conditions, cheap and high quality. It is a direction of research on medium and trace element fertilizers.
The chelating agent selectively captures certain metal ions in the cells of the plant and releases the metal ions in an appropriate amount when necessary. Because chelating agents have the ability to "smoke" (swallow or capture) "longitudinal" (spit or release) of metal ions, it is easier and more reasonable for crops to absorb nutrients. Therefore, it bears the role of the command in the plant body, balancing the nutrient supply between roots, stems, leaves, flowers and fruits, so that the plants thrive.
Combine the advantages of organic fertilizer and controlled release fertilizer into one?
Compared with the traditional inorganic trace element fertilizer, the chelated fertilizer has a well-balanced nutrient, is not easy to be fixed in the soil, is easily soluble in water, does not dissociate, can be well absorbed by plant roots, and can be combined with other solid or liquid fertilizers. Mixed application without antagonizing chemical reaction, without reducing the fertilizer effect of any fertilizer, preventing the occurrence of physiological diseases of crops due to elemental deficiency. Therefore, the application of the chelation process or the double chelated fertilizer in fertilizer production is another revolution in agricultural production.
Chelating fertilizers contain crop nutrient flavoring factors and plant growth promoting factors, and add a variety of high-activity synergistic substances that can improve the micro-ecological environment of plant roots and enhance the vitality of soil micro-organisms. It has a slow release and controlled release effect on nitrogen fertilizer, and has an activation function for phosphorus and potassium, and can improve the effectiveness of medium and trace elements such as calcium, magnesium, zinc and manganese in soil.
Fertilizer nutrients can be released in the soil like organic fertilizers according to the fertilizer requirements of crops, which can meet the demand for nitrogen, phosphorus and potassium in different growth stages of crops;
Where the harvest is a one-time harvested crop (such as wheat, rice, corn, fruit trees, etc.), all the fertilizers required for the entire growth period of the crop can be applied to the soil at one time, and no top dressing is required during the whole growth period; For crops that harvest fruits in succession (such as cucumber, tomato, etc.), the number of top dressings can be significantly reduced, labor saving, labor saving, labor intensity reduction, and production cost reduction.
Chelating fertilizer can promote the photosynthesis of crops and the complementarity, balance and coordination functions of various nutrients, and promote root development. The comprehensive utilization rate of nitrogen, phosphorus and potassium is increased by 20%-35%, and the fertilizer efficiency period is more than doubled compared with common fertilizer. Under the same nutrient content fertilization conditions, the field crops can increase production by 15%-20%, and economic crops increase production by 15%-30%.
Enhance the crop's ability to resist drought, high temperature, low temperature, salinity and lodging resistance. At the same time, it can also enhance the activity of various enzymes in plants, decompose and eliminate pathogenic bacteria, improve the ability of crops to resist pests and diseases, significantly reduce the incidence rate and reduce the amount of pesticides used.
It stimulates the activity of autotrophic nitrogen-fixing bacteria and improves soil fertility. In addition to all the advantages of organic fertilizers, in improving soil environment, promoting plant micro-ecological balance, improving crop yield and quality of agricultural products, all indicators can meet or exceed the production standards of pollution-free organic agricultural products.
The content of starch and protein in the food crop can be increased, and the sugar content, the degree of coloration and the freshness and storability of the fruit crops are improved. It has unparalleled excellent properties of organic fertilizer.
What can you chelate?
At the beginning of the production of chelated fertilizers, it mainly chelated the trace elements. The product is rich in iron, manganese, boron, zinc, copper, molybdenum and other chelating trace elements, which can be directly absorbed and utilized by crops, meet the trace elements needed for crop growth, prevent and cure the symptoms of deficiency, and avoid the loss of chelation. , antagonism and other phenomena, fertilizer utilization rate as high as 55-60%.
There are 17 kinds of nutrients necessary for crop growth, which are divided into large, medium and micro nutrients. A large number of elements include carbon, hydrogen, oxygen, nitrogen, phosphorus, potassium, medium elements include calcium, magnesium, sulfur, and trace elements include iron, copper, zinc, manganese, molybdenum, boron, nickel and chlorine. With the improvement of modern agricultural production level and the large use of nitrogen, phosphorus and potassium three-factor fertilizers, the lack of trace elements in soil is also becoming more and more serious.
Targeted application of micro-fertilizer is an effective technical measure to increase the yield of medium and low-yield fields, and is also an important means to maintain continuous yield increase in high-yield fields. By increasing the application of medium and micro-fertilizers, the demand for various nutrients in crops is met, so that the crops can grow normally and develop, so as to obtain the desired yield and benefits.
The application of medium and trace element fertilizers has greatly improved the inorganic nutrient balance of crops, not only greatly improved the yield of crops, but also greatly improved the quality of agricultural products, effectively reducing the content of nitrite in agricultural products, caused by some local deficiency. Disease can also be effectively prevented and treated.
The scientific application of micro-fertilizer not only satisfies the demand of nutrients for crops, makes it develop normally, is fully mature, improves the quality of agricultural products, reduces the surplus of a large number of elements, NPK, avoids waste of fertilizer and reduces soil pollution.
Chelation of humic acid, humic acid and other elements is the main development trend of chelated fertilizer in recent years. Fertilize soil fertility, stimulate growth, reduce soil-borne diseases, promote root development, release fixed phosphorus in soil; increase soil oxygen content, create favorable conditions for root growth, increase soil carbon-nitrogen ratio, and increase yield. With the development of water and fertilizer integration technology, the full water solubility technology of compound fertilizer chelated with humic acid has become the number one problem for enterprises.
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