The introduction of compound fertilizer refers to fertilizers containing more than two of the three elements of nitrogen, phosphorus and potassium. The total amount of nutrients is generally high and there are many kinds. Compared with powdered or crystalline unit fertilizer, the compound fertilizer has compact structure, uniform nutrient release and stable and lasting fertilizer efficiency.
The advantages of compound fertilizer are that compound fertilizer is generally made into granules, which has low hygroscopicity, is not easy to agglomerate, is convenient for storage and application, and is especially convenient for mechanized fertilization. Because there are few auxiliary components in compound fertilizer, it can save the cost of packaging, storage and transportation and improve the utilization rate of fertilizer.
Disadvantages of compound fertilizer The nutrient proportion of compound fertilizer is fixed, so it is difficult to meet the needs of various soils and crops. Moreover, the movement speed of different nutrients in the soil is different, and the degree of retention and loss is also different, so it is difficult to achieve the ideal effect in the application time and fertilization position.
How to use compound fertilizer In the process of using compound fertilizer, the methods of hole application and spreading application are generally adopted. Dig a small hole near the root system 10 cm, then sprinkle fertilizer, or dilute it with water and pour it into the soil.