NPK fertilizer, a compound fertilizer of three main plant nutrients: nitrogen (N), phosphorus (P), and potassium (K), is an indispensable and important tool in modern agricultural production.

As a kind of compound fertilizer, NPK fertilizer can provide the three main nutrients of nitrogen, phosphorus and potassium needed for plant growth at one time. It has the advantages of convenient application, comprehensive nutrients and significant fertilizer effect. According to the needs of different crops and different growth stages, there are a variety of NPK fertilizer products on the market to choose from, such as high nitrogen type, balanced type and high potassium type, to meet the needs of different agricultural production.