Generally speaking, the chlorophyll content of crops is closely related to the nitrogen effects of crops. Therefore, the relative content of chlorophyll or the “greenness degree†of plants can be determined with the use of chlorophyll analyzer. Nitrogen fertilizer needs of crops such as wheat, cotton and vegetables. What is carbon steel made of? Carbon Steel Stainless,Carbon Seamless Steel,Metal Stamping Carbon Steel Products,Carbon Steel Square Pipe Zhonglian Yongsheng Special Steel Co.,Ltd , https://www.zlysssteel.com
Chlorophyll analyzer is a simple, rapid and non-destructive method for diagnosis and diagnosis of nitrogen. It is a concrete embodiment of the application of science and technology to agricultural production. Through its measurement, researchers can predict the demand for crops and make reasonable predictions. Nitrogen fertilization was applied to determine whether the implementation was performed through a nitrogen fertilizer reaction test. Whether it could be used as a representative and whether it could increase the utilization rate of nitrogen fertilizer could provide important data support for the precise application of nitrogen fertilizer and environmental protection.
In general, different types of crops grow on different types of land. Because of the differences in climate, environment, and conditions, the amount of nitrogen fertilizer needed is also different. However, traditional methods of agricultural fertilization are excessive. The application is not insufficient, resulting in a large amount of excess fertilizer applied. On the one hand, there is no significant increase in the growth of the crop, but on the contrary it also has a certain inhibitory effect. On the other hand, the application of excessive nitrogen fertilizer causes environmental pollution. This has affected the agricultural environment in the field and affected the sustainable development of modern agriculture. These are the negative effects caused by the application of excess nitrogen fertilizer. The goal of modern agriculture is to realize the goal of high yield and high quality under the premise of protecting the environment and improving the soil. Therefore, the application of the chlorophyll meter is in line with the current development background of agriculture.
Why do you say that? This is because the results measured by the chlorophyll meter are closely related to the precise application of nitrogen fertilizer. Using the chlorophyll meter to perform the nitrogen fertilizer reaction test can save the agricultural resources, that is, reduce the use of nitrogen fertilizer and significantly increase the nitrogen fertilizer utilization rate. It has created conditions for the high yield and high quality of crops. At the same time, nitrogen pollution has also improved environmental pollution and promoted the healthy development of modern agriculture.
So-called carbon steel actually means the mechanics performance depends on is the carbon content in steel, general not add master alloy elements of the steel is also known as general carbon steel or carbon steel, and also called carbon steel, carbon steel means the carbon content WC is less than two percent of the iron carbon alloy, carbon and carbon steel in addition to outside, also contains a small amount of materials such as silicon, manganese, sulfur and phosphorus.
Generally carbon steel with higher carbon content will be harder and stronger, but the plasticity will be lower.
What are the advantages and disadvantages of carbon steel?
advantages
1. Higher hardness and better wear resistance of carbon steel can be obtained after heat treatment.
2. The hardness of carbon steel in annealed state is very moderate, and it has good machinability.
3, carbon steel raw materials are very common, simple and easy to obtain, and the cost of production is relatively low.
disadvantages
1, the thermal hardness of carbon steel will be poor, because when the working temperature of the tool is more than two hundred degrees, its hardness and wear resistance will drop sharply.
2, the hardenability of carbon steel is very low, water quenching completely quenched the diameter of the general in 15-18 mm, and for the diameter or thickness is only about 6 mm, so it will be relatively easy to deformation and cracking.
What are the classifications of carbon steel
1, according to the use of carbon steel can be divided into carbon structural steel, carbon tool steel and easy to cut structural steel these three categories.
2. According to the smelting method, carbon steel can be divided into open hearth steel, converter steel and electric furnace steel.
3. According to the method of deoxidation, carbon steel can be classified into efferrescent steel, killed steel, semi-killed steel and special killed steel, which are denoted by code F, Z, B and TZ respectively.
According to the carbon content, carbon steel can be divided into low carbon steel, medium carbon steel and high carbon steel.
5. According to the content of sulfur and phosphorus, carbon steel can be divided into ordinary carbon steel with higher content, high-quality carbon steel with lower content of phosphorus and sulfur, and high-grade high-quality steel with lower content of phosphorus and sulfur, and finally there is a super grade of high-quality steel these four categories.
September 30, 2021