In the fertilizer market, we often see a lot of colorful, colorful fertilizers, such as compound fertilizer, urea, water soluble fertilizer, controlled release fertilizer, coated fertilizer, etc. are not just a color, and the price of these color fertilizers Still relatively high. Some people say that this is because the trace fertilizer is added to the color fertilizer, so the price is high and it is very popular. But some people say that this is just adding a stain, and there is no benefit to the soil. What is the situation? Why are there so many colors of fertilizer? Let's talk about the color of fertilizer today.

First, the fertilizer has color, which can be roughly divided into two situations.

1. The raw materials produced are colored by themselves, or some natural colored substances such as humic acid additives are added.

2. There is also a kind of dyeing agent added to the fertilizer (some food-grade pigments, iron oxide series pigments, etc.), and the fertilizer is dyed into a colorful color.

Second, why do many fertilizer manufacturers want to color fertilizer?

1. Because most of the traditional fertilizers are similar in color and many types, farmers are not easy to identify, so the fertilizers are designed in different colors, allowing everyone to quickly identify the type of fertilizer through color.

2. Some fertilizers without color are difficult to see the concentration of fertilizer by naked eyes, while dyed fertilizers can roughly judge the concentration of fertilizer by the depth of the diluted color.

3, added some functional colored components, resulting in changes in fertilizer color, the purpose is to improve fertilizer efficiency, such as adding some humic acid to improve fertilizer quality.

4. Due to the requirements of facility agriculture, water-soluble fertilizers will be used in large quantities. In order to determine whether the fertilizer solution has flowed in the transparent water pipe, the fertilizer is often dyed to facilitate observation and control of the amount of fertilizer applied.

5, of course, does not rule out that some bad manufacturers just want to use the color of fertilizer to sell high prices, in fact, the role of fertilizer may not be the same as other.

3. What color is the conventional fertilizer?

Xiaobian has sorted out the common colors of conventional fertilizers. You can refer to them:

1. Ammonium bicarbonate, white or light color.

2. Ammonium chloride, white or yellowish.

3. Ammonium sulfate, white or light yellow.

4, urea, generally white, generally contains yellowish impurities.

5. Ammonium nitrate, the appearance is white or light yellow.

6, superphosphate, gray or light gray.

7, calcium sulfate, white, gray yellow, gray green, light brown and so on.

8, diammonium phosphate, gray, grayish white or taupe, and some are light yellow.

9, potassium nitrate, white or light color.

10, potassium dihydrogen phosphate, generally white transparent crystals, and some are yellowish crystals.

11. Organic fertilizers, bio-organic fertilizers, generally brown to dark brown granules or powder.

12, containing amino acid water-soluble fertilizer, containing humic acid water-soluble fertilizer, there are two forms of solid and liquid, the two water-soluble fertilizer liquids generally have a color, brown, brown, black, but also green.

13, medium and trace element water soluble fertilizer, generally white powder or transparent liquid, will also display a variety of colors depending on the state. For example, the iron fertilizer in the ionic state is green and red, but the iron fertilizer in the EDTA chelated state is mostly white.

After reading the above, you may have some understanding of the color of the fertilizer. What we need to pay special attention to is that some poor manufacturers can only paint fertilizers for a good price. In practice, we mainly look at the type of fertilizer and the efficacy of fertilizers. This is the most important thing.

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