Nitrogen, phosphorus and potassium fertilizers are the three types of fertilizers commonly used in agricultural production, and they play a vital role in the growth and development of crops. Below we will introduce in detail the common types of nitrogen, phosphorus and potassium fertilizers.
1. Types of nitrogen fertilizers.
1.Ammonium nitrogen fertilizer: mainly including ammonium sulfate, ammonium chloride, ammonium bicarbonate, etc. The nitrogen in this type of fertilizer exists in the form of ammonium ions, which is easily adsorbed by the soil and is not easy to lose. Ammonium nitrogen fertilizer is suitable for a variety of soils and crops, but care should be taken to avoid mixing with alkaline substances to avoid ammonia volatilization loss.
2.Nitrate nitrogen fertilizer: such as ammonium nitrate, calcium nitrate, etc. The nitrogen in this type of fertilizer exists in the form of nitrate ions, which are soluble in water and easily absorbed by crops. Nitrate nitrogen fertilizer is suitable for water-scarce, well-drained soil and nitrogen-loving crops such as tobacco, sugar beets, etc.
3.Amide nitrogen fertilizers: such as urea. Urea is a fertilizer with a high nitrogen content, and its nitrogen exists in an amide state, which needs to be converted to ammonium or nitrate in the soil before it can be absorbed by crops. Urea is suitable for all kinds of soils and crops, and has the advantages of long fertilizer efficiency and easy use.
Second, the type of phosphate fertilizer.
1.Superphosphate: Superphosphate is a water-soluble phosphate fertilizer with a high phosphorus content. It is suitable for acidic soils and phosphorus-deficient crops such as wheat, corn, etc. Superphosphate should be mixed with organic fertilizer when applying to improve fertilizer efficiency.
2.Calcium-magnesium-phosphate fertilizer: Calcium-magnesium-phosphate fertilizer is a weakly acidic fertilizer with moderate phosphorus content. It is suitable for neutral or alkaline soils, and has the advantages of improving soil and improving crop stress resistance. Calcium, magnesium and phosphorus fertilizers should be applied with deep soil cover to reduce phosphorus fixation and loss.
3.Phosphate rock powder: Phosphate rock powder is a kind of insoluble phosphate fertilizer with a high phosphorus content. It is suitable for acidic soils and phosphorus-loving crops such as trees, vegetables, etc. Phosphate rock powder should be mixed with organic fertilizer and lime to improve the solubility and utilization rate of phosphorus.
3. Types of potash fertilizers.
1.Potassium chloride: Potassium chloride is a water-soluble potassium fertilizer with a high potassium content. It is suitable for all kinds of soils and crops, and has the advantages of fast fertilizer efficiency and easy use. However, it should be noted that the chloride ions in potassium chloride may have adverse effects on some crops, such as tobacco, potatoes, etc.
2.Potassium sulfate: Potassium sulfate is a neutral potassium fertilizer with a moderate potassium content. It is suitable for all kinds of soils and crops, and has the advantages of improving soil and improving crop quality. Potassium sulfate should be mixed with organic fertilizer when applied to improve fertilizer efficiency. Nitrogen, phosphorus and potassium fertilizers
3.Potassium and magnesium fertilizer: Potassium and magnesium fertilizer is a compound fertilizer containing potassium and magnesium, which is suitable for potassium and magnesium deficient soils and crops. Potassium and magnesium fertilizers should be mixed with organic fertilizers and phosphate fertilizers to meet the needs of crops for a variety of nutrients.
In short, nitrogen, phosphorus and potassium fertilizers are indispensable and important fertilizers in agricultural production. When selecting fertilizers, we should consider soil conditions, crop needs, fertilizer properties and other factors, and reasonably select and use fertilizers to improve crop yield and quality and achieve sustainable agricultural development.