Compound Fertilizer

Compound fertilizers are chemical fertilizers made by chemical methods or/and mixed methods containing any two or three of the nutrient elements of crops, nitrogen, phosphorus and potassium. Its role is to meet the comprehensive needs and balance of multiple nutrients needed by agriculture under different production conditions. It is widely used in modern agriculture.

Due to the needs of agriculture, compound fertilizers, especially high-concentration compound fertilizers, are an inevitable trend in the development of Chemical Fertilizer varieties. The early Fertilizer Industry in most countries was dominated by fertilizers in the production unit (fertilizers containing a nutrient). With the development of soil fertilizer science and Agricultural Fertilization technology, agriculture has moved towards Scientific Fertilization. Scientific fertilization must be based on different soil types and properties, fertility levels, crop types and climatic conditions and other factors to determine the variety and quantity of fertilizer, so that the excessive application or shortage of one or more nutrients in the soil and waste.

The content of each nutrient element of the Compound Fertilizer is generally expressed in the corresponding percentage of N–P2O5-K2O, and its sum is the concentration of the fertilizer. According to Chinese standards, the total content of 25% to 30% is a low concentration, 30% to 40% is a medium concentration, and more than 40% is a high concentration compound fertilizer. Compound fertilizers can evenly supply several nutrients to crops at the same time, so as to give full play to the mutual promotion of nutrients. Because of its different production processes, it can be divided into three categories: compound fertilizer, compound fertilizer and mixed compound fertilizer.