A. Types of Agricultural Fertilizers
Agricultural fertilizers are primarily divided into two categories based on their source and properties: inorganic fertilizers and organic fertilizers.
a. Inorganic Fertilizers: Inorganic fertilizers are mineral fertilizers, also called chemical fertilizers, or simply chemical fertilizers. They are inorganic salts derived from minerals and are produced by the chemical industry. They primarily include elemental fertilizers such as nitrogen, phosphate, and potash fertilizers; compound fertilizers containing nitrogen, phosphorus, and potassium; and trace element fertilizers. Common inorganic fertilizers include superphosphate, nitrogen fertilizers, and potassium dihydrogen phosphate. Inorganic fertilizers are generally high in nutrients, readily soluble in water, quickly decompose, and are easily absorbed and utilized by crops. However, long-term use can lead to soil compaction and reduced fertility.
b. Organic Fertilizers: Organic fertilizers are primarily derived from plants and/or animals and are carbon-containing materials applied to the soil to provide plant nutrients. Examples include farmyard manure, green manure, and stable manure. Organic fertilizers contain large amounts of biomass, animal and plant residues, excrement, and biological waste. Applying organic fertilizers not only provides comprehensive nutrition for plants but also has a long-lasting effect. They increase and regenerate soil organic matter, promote microbial growth, and improve soil physical and chemical properties and biological activity.
A. What are the types of buffered agricultural fertilizers?
Buffered fertilizers are a special type of agricultural fertilizer that slowly releases nutrients, providing long-lasting nutritional support for plants. There are many types of buffered fertilizers, and the following are some common ones:
a. Resin-coated controlled-release fertilizers: Resin-coated controlled-release fertilizers are slow-release fertilizers manufactured using polymer resin coating technology. They slowly release nutrients according to crop needs, meeting their long-term nutritional requirements.
b. Stabilized fertilizers: Stabilized fertilizers contain urease inhibitors or nitrification inhibitors. These fertilizers slow the hydrolysis of urea and the nitrification of ammonium nitrogen, thereby achieving a slow-release nutrient release effect.
In addition to the two types of buffer fertilizers mentioned above, there are many different brands and types of buffer fertilizers available on the market. Farmers can choose the appropriate buffer fertilizer based on the actual needs of their farmland and crop growth conditions.
In general, there are many types of agricultural fertilizers. Inorganic and organic fertilizers each have their own advantages and disadvantages and are suitable for different scenarios. Buffer fertilizers are a newly emerging type of fertilizer that slowly releases nutrients according to crop needs, improving fertilizer utilization and promoting healthy crop growth. When selecting agricultural fertilizers, comprehensive consideration should be given to factors such as farmland conditions, crop needs, and environmental protection.
