What Are Compound Fertilizers

Compound fertilizers are chemical fertilizers containing any two or three of the crop nutrients nitrogen, phosphorus, and potassium, which are made by chemical methods or mixed methods. In the production of compound fertilizers, soil testing formulas are often used to measure soil nutrients. Soil testing and formula fertilization are based on soil testing and fertilizer field experiments. On this basis, the application quantity, fertilization period, and application method of nitrogen, phosphorus, potassium, and medium and trace elements are put forward.

The core of soil testing and formula fertilization technology is to adjust and solve the contradiction between crop fertilizer demand and soil fertilizer supply. At the same time, the nutrient elements required by crops are supplemented in a targeted manner. What elements are lacking in crops can be supplemented, and how much is needed to achieve a balanced supply of various nutrients to meet the needs of crops; improve fertilizer utilization and reduce dosage, and improve crops. The purpose of improving the quality of agricultural products, save labor and increase income.

What Are Chemically Synthesized Compound Fertilizers
Chemically synthesized compound fertilizers refer to compound fertilizers synthesized through obvious chemical reactions, which are made through the process of chemical synthesis or ammoniated granulation. This type of compound fertilizer contains two or more elements required by crops and has high nutrient content, which can supply the nutrients required by crops in a balanced and long-term manner, and improve the effect of fertilization and yield increase.

Secondly, this type of compound fertilizer is mostly granular, generally has low moisture absorption, no caking, and good physical properties. It can improve the poor properties of some elemental fertilizers, and it is also convenient for storage, especially for mechanized fertilization. Finally, this type of fertilizer can be used as seed fertilizer, basal fertilizer, and top dressing, and has a wide range of applications.

However, chemical compound fertilizers also have some disadvantages. For example, the ratio of nitrogen, phosphorus, and potassium is relatively fixed, which cannot be applied to the nutrient requirements of various soils and crops. Therefore, in the process of compound fertilizer application, it is generally necessary to cooperate with the application of elemental fertilizers to meet the needs of various types and quantities of nutrients in different growth stages of various crops and to achieve the balanced needs of crops for high yield.

In addition, chemical compound fertilizers are chemically synthesized from different elements and compound fertilizers, so it is difficult to meet the requirements of crops for different nutrient fertilization technologies during the fertilizer application process, and it is impossible to obtain the best application effect of various nutrients contained in them.

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