Preparation of compound fertilizer based on spring plowing

The compounding effect of the compound fertilizer is more significant than the application of the single-ferment fertilizer. This concept of fertilization has been recognized and accepted by farmers. However, due to a variety of factors, most farmers do not know that even if they purchase qualified compound fertilizers, they will reduce or even reduce crops due to improper selection or improper application.
1. Pursue suitable compound fertilizer according to local soil characteristics. For farmers who are located in alkaline soil in the north, they should generally choose acid compound fertilizer. On the contrary, farmers in southern acid soil should choose alkaline. Compound fertilizer; for soils with low organic matter content, it can generally be combined with the application of organic compound fertilizer or organic and inorganic compound fertilizer. In the alkaline soil of northwest China, it is generally not suitable to select and apply compound fertilizer produced by using soluble phosphorus, potassium chloride and ammonium chloride as raw materials.
Second, according to the variety of crops to buy compound fertilizer field crops should generally use NPK ternary compound fertilizer; for vegetables, fruit trees and other economic crops, especially root crops, due to more potassium, should use higher potassium and phosphorus Potassium ternary compound fertilizer; for chlorine-free crops such as grapes, potatoes, tobacco, sugar beets, etc., it is not suitable to apply compound fertilizer with high chloride ion content produced by using potassium chloride or ammonium chloride as raw materials.
Third, according to the nature of fertilizers to buy compound fertilizer Farmers friends should learn to understand and master a little about the common sense of fertilizer, so that you can find out when you buy fertilizer. National standards stipulate that the effective nutrient content of compound fertilizer (composite fertilizer) is divided into high, medium and low: high concentration of NPK ≥40%, medium concentration of NPK ≥30%, low concentration of NPK ≥25% Excluding trace elements and medium elements; water-soluble phosphorus content ≥ 40%. The nutrient content is different, the quantity applied and the technical requirements are different, of course, the price is different.
4. Purchasing compound fertilizer according to fertilization method In order to improve the fertilizer efficiency of compound fertilizer, different fertilizer types should be used for different fertilization methods. When used as a base fertilizer, it is necessary to purchase granular compound fertilizer, or to purchase a compound fertilizer containing slow-release fertilizer, which has a long fertilizer effect and is beneficial to increase the utilization rate of nitrogen. The effect of humic acid compound fertilizer is generally better than that of topdressing.
5. According to the principle of balanced fertilization, it is necessary to contact the agricultural technicians in order to understand the soil characteristics and the fertilizer requirements of the crops. It is best to combine with the soil testing and formula fertilization, according to the principle of balanced crop nutrition, according to soil testing. The result is a reasonable formula, what is missing what is needed to achieve a balanced supply of crop nutrients. Finally, it should be noted that the compound fertilizer is relatively fixed, must not be blindly selected and applied, nor can it be applied as a single fertilizer to avoid unnecessary loss and waste.

Metallurgical Machinery Bearings

Bearings play an important role in the metallurgical industry, mainly in the following aspects:

1. Equipment operation: The metallurgical industry uses a large number of rotating equipment, such as rolling mills, ovens, cooling equipment, etc., and the normal operation of these equipment is inseparable from the support and guarantee of bearings. Bearings can reduce the friction and wear of equipment, improve the reliability and operation efficiency of equipment.

2. Load bearing: The equipment in the metallurgical industry usually needs to bear heavy loads, and the bearings can bear and distribute these loads to ensure the stable operation of the equipment. For example, in the rolling process, bearings are subjected to high temperatures, high speeds and large loads, which can ensure the normal operation of the rolling mill.

3. Temperature and environmental adaptability: The working environment of the metallurgical industry is usually harsh, such as high temperature, high humidity, corrosive gas, etc., and the bearing needs to have good high temperature resistance, corrosion resistance and other characteristics to adapt to these harsh environments.

4. Energy saving and emission reduction: The optimal design and selection of bearings can reduce energy consumption and emissions, and improve the energy utilization rate of equipment. For example, the use of low-friction bearings and high-efficiency sealing structures can reduce energy consumption and lubricant consumption.

To sum up, bearings in the metallurgical industry not only ensure the normal operation of equipment, but also improve the reliability, stability and energy efficiency of equipment, and play an important supporting role in the development of the metallurgical industry

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