What Is Organic Fertilizer? A Detailed Explanation of the Definition of Organic Fertilizer
A reader left a comment: There are many brands of organic fertilizer on the market now. What does organic fertilizer do? In response to the above question, Zhongdiwang has compiled the characteristics and advantages of organic fertilizer, listed in detail below for readers' reference. Characteristic 1. Organic fertilizer provides crops with a variety of nutrients: Organic fertilizer is also called...
A readerleft a comment: There are many brands of organic fertilizer on the market now. What does organic fertilizer do?
In response to the above question, Zhongdiwang has compiled the characteristics and advantages of organic fertilizer, listed in detail below for readers' reference.
Characteristic 1. Organic fertilizer provides crops with a variety of nutrients:
Organic fertilizer, also called farmyard manure, is a safe fertilizer. It generally contains all kinds of nutrient elements needed by crops and rich organic matter, containing not only nitrogen, phosphorus and potassium, but also trace elements such as boron, molybdenum, zinc, manganese and copper, as well as growth stimulants.
Characteristic 2. Organic fertilizer can improve the effectiveness of chemical fertilizers:
The main mechanism by which organic fertilizer reduces nutrient fixation and improves the effectiveness of chemical fertilizers is the "chelation" of organic fertilizer. So-called "chelation" means that the humic acid in organic fertilizer forms a ligand with the inorganic salts in the soil, binding them firmly to each other, reducing the chemical reactions between nutrient elements and the soil, improving the effectiveness of the fertilizer, raising the utilization rate of chemical fertilizers, preventing chemical fertilizers from leaching and pollution, and improving the quality of agricultural products.
During the decomposition of organic fertilizer, the various organic acids and carbonic acid produced can promote the transformation of sparingly soluble phosphates in the soil and improve the availability of phosphorus. The nutrients in organic fertilizer are mostly in organic form and must be decomposed by microorganisms and converted into the inorganic form absorbed by crops. This process is slow, gradually transforming and releasing nutrients. Therefore, organic fertilizer is not only effective in the current year but also has a long-lasting residual effect, stable in nature and not too rapid.
Characteristic 3. Organic fertilizer can increase the number of soil microorganisms and provide the energy they need:
Organic fertilizer is not only food for crops but also food for soil microorganisms. Organic fertilizer contains large numbers of microorganisms, and most microorganisms rely on the existing organic matter to sustain life. When the soil is rich in organic matter, it promotes vigorous microbial activity.
In the process of metabolism, microorganisms release large amounts of enzymes and produce a black or brown humus, which can supply energy to microorganisms in a lasting and stable way and create a good living environment for them.
Characteristic 4. Organic fertilizer can effectively improve the physical properties of soil:
Humus is a colloidal substance and the main substance with water stability. The cohesive force of soil humus is 10.5 times less than that of clay, while its adhesion is greater than that of sand grains, so sandy soil does not scatter and clayey soil becomes loose.
Organic fertilizer can improve the water- and fertilizer-holding capacity of sandy soil, and for clayey soil it can reduce its cohesion, making it loose, facilitating tillage and drainage, and extending the suitable tillage period of the soil. Humus also deepens soil color and has a heat-absorbing and warming effect, which is beneficial to seed germination and crop growth. Humus has a strong water-absorbing capacity, generally able to absorb 9 to 25 times its own weight in water, which helps crops resist drought and waterlogging.
Characteristic 5. Organic fertilizer can enhance the fertilizer-holding capacity of soil:
Organic fertilizer has many functions, and its core part is organic colloid. Organic colloid has cementing power and substitutive properties. Organic fertilizer concentrates a large amount of organic colloid, and its ion exchange capacity is equivalent to 10 to 20 times that of the soil body, thereby greatly increasing the absorption of potassium, sodium, calcium, magnesium, iron and aluminum in the soil.
Characteristic 6. Organic fertilizer can reduce soil pollution:
The humus in organic fertilizer can absorb certain pesticides, and the chelates formed by organic matter and heavy metal ions are easily soluble in water and can be discharged from the soil, eliminating pesticide residues and reducing heavy metal pollution of the soil.
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