Differentiation of humic acid fertilizer is only 3 strokes

Humic acid fertilizers are chemical fertilizers that have been treated with ammonia, nitrification, salination, or added with nitrogen, phosphorus, potassium, trace elements, and other additives. They have improved soil, increased nutrient availability, and enhanced plant resistance. Converse, promote the activity of soil beneficial microorganisms, increase production and improve quality and other effects. So, which methods can quickly identify the quality and quality of humic acid fertilizers?

Three methods to distinguish between true and false

Check the water-solubility Put the humic acid fertilizer in the water, observe the speed of dissolution, whether it can be completely dissolved, and whether there is sediment. Usually good quality humic acid fertilizers perform well.

Check the color If it is a humic acid water-soluble fertilizer or powder, a small amount in the clear water, the color of the water will turn brown and black, if the color is very dark, it may be stained. If it is a humic acid fertilizer granule, it can be made by hand. If it is discolored and the color is difficult to wash off with water, there is also a possibility of staining. The particles can also be crushed to see if the inside and the outside are of uniform dark brown color. If the outside is only black and white (or other colors), it may be stained. Special emphasis is that there is a kind of fertilizer on the market that is white granules. Allegedly due to the addition of white humic acid, it must not be bought because white humic acid is not a substance at all!

Judgment on whether or not to be activated Some humic acid fertilizers are humic acid powders that have not been activated or have a low degree of activation, and the humic acid fertilizers produced by the humic acid fertilizers have poor effects and are slow to perform. If the price of a humic acid fertilizer is extremely low, it is possible to add unactivated raw flour, so be careful.

Three features need attention

First, humic acid fertilizers have different nutrient ratios and different production methods, which can lead to great differences in fertilizer properties. Therefore, different humic acid fertilizers and reasonable amounts are used for different crops and the growing period of crops. Farmers and distributors must follow the instructions, do not increase or decrease the amount. Because humic acid belongs to the category of biostimulating hormones, application of too high concentrations may inhibit crop growth, but the concentration is too low and does not have the effect of stimulating crops, so the concentration must be in place.

Second, not every crop has a direct effect on humic acid. Humic acid has the most obvious effects on rhizome crops. Therefore, radish, potatoes, sweet potatoes, etc. must be used in popularization experiments. The melons, wheat, rice, etc., with relatively large leaves, have insignificant oil crops such as rapeseeds and ramie. Although there are actual effects, such as the speed, number and length of root development, the data can only be detected by scientific methods and it is difficult for the naked eye to identify.

Third, humic acid can not completely replace chemical fertilizers and farmyard fertilizers. It is more effective when applied in combination with chemical fertilizers and farmyard fertilizers.

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