Potassium fulvic acid has no effect after use, and it cannot be directly said to be fake. First of all, we need to look at our misunderstanding of the method of use in the process of use, and the reasons for the early ineffectiveness.

1. When using potassium fulvic acid, pay attention to secondary dilution, otherwise it will cause root burning and weaken crop seedlings.

2. The use time is wrong, such as high temperature sunny day or rainy day, and rainy day after spraying, so the effect of fertilizer will be reduced, and it needs to be reused.

3. Poor soil, which is another problem. Poor soil environment, such as soil-borne diseases and salinization, will affect fertilizer efficiency.

How to distinguish true from false potassium fulvic acid compound fertilizer? From three aspects:

1. Color. The color of good quality potassium fulvic acid is generally ebony black. If your colors are too bright, you need to pay attention. Other ingredients may be added, and coloring agents may also be added.

Second, the smell. Potassium fulvic acid generally has no other smell, such as strong sourness or ammonia smell, so it is basically judged as fake.

3. Solubility. We can put it in water and dissolve it into a brown solution. If you dissolve the color too dark, its quality may not be good.