Soil testing formula fertiliser: scientific soil fertilization to make the soil more fertile

Fertile soil will make flowers more beautiful, food production is higher, fruit is sweeter, and farmers' income will be higher. Therefore, in the process of promoting agricultural modernization, the quality protection and upgrading of cultivated land must be carried out simultaneously. However, in the survey, we found that many agricultural arable land is more and more barren, the more fertilizers are used, and the grain output is not growing, even backwards. What causes these problems? In fact, the soil management work is not scientific. In modern agricultural production, scientific soil testing and fertilization are carried out by using the soil testing formula fertilizing instrument , and the data is used to guide the rational fertilization, which not only reduces the cost of fertilizer, but also makes the soil more fertile and makes the land “golden”.

In soil management, fertilization is an important task. We grow crops on the land, and the crops will take nutrients from the soil to meet their own growth and development needs. If there is insufficient nutrients in the soil, the crop will have physiological barriers that affect yield and quality. Therefore, fertilization supports crop growth by supplementing the soil with nutrients. In general, fertilization should be how much to make up, what is missing, and traditional fertilization operations are mostly based on experience, and have not been refined, thus causing a phenomenon in which soil nutrients do not match plant growth requirements. It affects the growth of crops. Not only that, but excessive fertilization also causes a series of problems such as soil compaction and acidification, resulting in lower and lower soil quality. Therefore, in order to make the soil more fertile, it should be done with refined fertilization management, the application of soil testing and formula fertilization instrument, so that people can guide the lack of land and the lack of quantity, indicating the direction for scientific fertilization.

In fact, the use of land, especially agricultural land, should be developed and protected. In recent years, with the popularization and application of soil instruments such as soil testing and formula fertilization instruments, it has provided important support for rational use of soil resources, elimination of soil low-yield factors, prevention of soil degradation and improvement of soil fertility levels, and promoted agriculture first. Sustainable development.

Bright Steel Bar

BRIGHT STEEL BAR

Bright steel bar is carbon or alloy steel bar with shining bright surface which is improved by cold drawing, peeling, turning, grinding and polishing over hot rolled black surface bars. By cold drawing, the steel bar yield strength and tensile strength will be improved. By peeling and turning, the surface imperfections will be removed. By grinding, the diameter tolerance will be more precision. By polishing, the surface will be much more shining.

Except the shining bright surface, comparing with the hot rolled black surface bars, the bright steel bars has better surface roughness, better roundness, straightness, more precision size tolerance etc.

Heat treatment such as annealing, normalizing, quenching and tempering will be done before do cold finishing on the hot rolled bar to get bright steel bar, in such condition, the steel bright bar will get most suitable mechanical properties to meet different application requirement.

The advantages of steel bright bars we supply:

1) Big stocks of hot rolled round bars or wire rods as raw materials

2) Heat treating furnaces to adjust the mechanical properties

3) Full sets of testing equipment to test the sizes, mechanical properties and microstructure.

4) Multiple packages to avoid broken packages and anti-rusty

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SHANDONG LE REN SPECIAL STEEL CO., LTD. , https://www.sdcolddrawnsteelbar.com