Characteristics of compound fertilizers

The advantages of compound fertilizers: high active ingredients and many types of nutrients; few side ingredients and little adverse impact on the soil; low production cost; good physical properties. Disadvantages of compound fertilizers: The nutrient ratio is fixed and it is difficult to adapt to the different needs of various soils and crops. It is often supplemented and adjusted with simple fertilizers. It is difficult to meet the requirements of fertilization technology. The movement patterns of various nutrients in the soil and the requirements for fertilization technology are different. For example, nitrogen fertilizer has high mobility, P and K fertilizer have small mobility, but the aftereffect of phosphorus and potash fertilizer is long. In terms of application, nitrogen fertilizers are usually used as top dressing, phosphorus and potassium fertilizers are usually used as base fertilizers and seed fertilizers, and compound fertilizers apply various nutrients at the same location and at the same time. In this way, it is difficult to meet the nutrient requirements of crops in a certain period. Therefore, it is necessary to understand the soil conditions in various places, the growth characteristics and fertilizer requirements of various crops, and apply appropriate compound fertilizers.