Look at the high-quality compound fertilizer packaging on the clear font, the sealing is neat, the fertilizer particles in the bag are consistent, no large lumps and less powder. If used with Canadian potassium fertilizer, some red potassium fertilizer particles can be seen.
优质 High-quality compound fertilizer with hand rubs, leaving a layer of gray-white powder on the hand, and has a sticky feeling. If the particles are broken, fine white crystals can be seen. The inferior compound fertilizer is mostly gray-black powder, has no sticky feeling, and has no white crystals in the particles.
A small amount of compound fertilizer is placed on the iron sheet and burned in an open flame. The ammonia smell indicates nitrogen, and a yellow flame indicates potassium. The thicker the ammonia smell, the yellower the yellow flame, indicating that the higher the nitrogen and potassium content, the better the compound fertilizer. On the contrary, it is a poor compound fertilizer.
Soluble high-quality compound fertilizer has good water solubility, most of which can be dissolved in water, even if there is a small amount of sediment, it is fine, and the inferior compound fertilizer is hardly soluble in water, and the residue is rough and hard.
优质 High-quality compound fertilizer with hand rubs, leaving a layer of gray-white powder on the hand, and has a sticky feeling. If the particles are broken, fine white crystals can be seen. The inferior compound fertilizer is mostly gray-black powder, has no sticky feeling, and has no white crystals in the particles.
A small amount of compound fertilizer is placed on the iron sheet and burned in an open flame. The ammonia smell indicates nitrogen, and a yellow flame indicates potassium. The thicker the ammonia smell, the yellower the yellow flame, indicating that the higher the nitrogen and potassium content, the better the compound fertilizer. On the contrary, it is a poor compound fertilizer.
Soluble high-quality compound fertilizer has good water solubility, most of which can be dissolved in water, even if there is a small amount of sediment, it is fine, and the inferior compound fertilizer is hardly soluble in water, and the residue is rough and hard.
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