Nutrient
The total nutrient amount of compound fertilizer is generally high, the nutrient variety is more, one application of compound fertilizer at least at the same time can supply two kinds of main nutrients of crop.
Uniform structure
For example, ammonium phosphate does not contain any useless accessory, and its anions and cations are the main nutrient elements of crop absorption. The nutrient distribution of this fertilizer is quite homogeneous, and the structure is close, the nutrient release is homogeneous and the fertilizer is stable and long after the granule is caused by powder or crystalline unit fertilizer. Because of the low secondary composition, the adverse effects on the soil are small.