What are the classifications of fertilizers? The difference between chemical fertilizer and organic fertilizer.
Fertilizer is the food of plants, it is a substance that directly or indirectly supplies nutrients needed by crops, improves soil properties, and improves crop yield and quality. In recent years, with the fierce competition in the fertilizer market, there are many different fertilizer names, and many products are really confused by the name alone. The following editor will take you to learn more about fertilizer.
What is fertilizer?
Any substance that is applied to the soil or sprayed on the ground of crops, can directly or indirectly supply crop nutrients, increase crop yields, improve product quality, or improve soil properties and fertility is called fertilizer. Those fertilizers that directly supply essential nutrients to crops are called direct fertilizers, such as nitrogen fertilizer, phosphate fertilizer, potash fertilizer, trace elements and compound fertilizers. Other fertilizers that are mainly used to improve the physical, chemical and biological properties of the soil, thereby improving the growth conditions of crops, are called indirect fertilizers, such as lime, gypsum, and fertilizers fall into this category.
What kinds of fertilizers are there?
According to chemical composition: organic fertilizer, inorganic fertilizer, organic and inorganic fertilizer;
By nutrient: elemental fertilizer, compound (combined) fertilizer (multi-nutrient fertilizer);
According to the way of fertilizer effect: fertilizer, slow-acting fertilizer;
According to the physical status of the fertilizer: solid fertilizer, liquid fertilizer, gas fertilizer;
According to the chemical properties of fertilizers: alkaline fertilizer, acid fertilizer, neutral fertilizer;
What is chemical fertilizer?
In a narrow sense, chemical fertilizers refer to fertilizers produced by chemical methods; in a broad sense, chemical fertilizers refer to all inorganic fertilizers and slow-acting fertilizers produced in industry. So some people just call nitrogen fertilizer chemical fertilizer. Chemical fertilizer is the general term for nitrogen, phosphorus, potassium, and compound fertilizer.
what is organic fertilizer?
Organic fertilizer is a type of natural fertilizer that is used in rural areas to use various organic materials such as animal and plant residues or human and animal excrement, which are accumulated on the spot or directly cultivated and buried. It is customarily called farm fertilizer.
What is the difference between chemical fertilizer and organic fertilizer?
(1) Organic fertilizers contain a large amount of organic matter and have obvious effects on improving soil and fertilizing; chemical fertilizers can only provide inorganic nutrients for crops, and long-term application will cause adverse effects on the soil, making the soil more greedy.
(2) Organic fertilizers contain a variety of nutrients, which are balanced; while chemical fertilizers contain a single type of nutrients, long-term application is likely to cause an imbalance of nutrients in the soil and food.
(3) Organic fertilizers have low nutrient content and need to be applied in large quantities, while chemical fertilizers have high nutrient content and a small amount of application.
(4) Organic fertilizers have a long fertilizer effect time; chemical fertilizers have a short and strong fertilizer effect period, which is easy to cause nutrient loss and pollute the environment.
(5) Organic fertilizers come from nature, and there are no chemical synthetic substances in the fertilizers. Long-term application can improve the quality of agricultural products; chemical fertilizers are pure chemical synthetic substances, and improper application can reduce the quality of agricultural products.
(6) During the production and processing of organic fertilizers, as long as they are decomposed, the application can improve the drought resistance, disease resistance, and insect resistance of crops, and reduce the use of pesticides; long-term application of chemical fertilizers often reduces the amount of plants. A large amount of chemical pesticides are needed to maintain crop growth, which can easily cause the increase of harmful substances in food.
(7) Organic fertilizers contain a large number of beneficial microorganisms, which can promote the biotransformation process in the soil, which is conducive to the continuous improvement of soil fertility; long-term large-scale application of chemical fertilizers can inhibit the activity of soil microorganisms, resulting in a decline in the automatic regulation of soil.