Organic fertilizers are mainly derived from plant and/or animal residues and are applied to the soil to provide plant nutrients as a carbonaceous material whose main function is. Processed from biological materials, animal and plant waste, and plant residues, it eliminates toxic and harmful substances and is rich in a lot of beneficial substances, including: a variety of organic acids, peptides and rich in nitrogen, phosphorus and potassium. Nutritional elements.
1.What are the benefits of applying organic fertilizer to the soil?
Provide comprehensive nutrients. Organic fertilizer is a complete fertilizer.
It contains the nutrients and various beneficial elements needed for crops, and the nutrient ratio is comprehensive, which is beneficial to crop absorption. Therefore, the more organic fertilizer is applied, the more favorable the balance of soil nutrient ratio, the more beneficial to the absorption and utilization of soil nutrients by crops, and the fact that soil organic nutrients will not increase due to the application of organic fertilizer, destroying soil nutrients. balance.
2. Promote soil microbial breeding
Organic fertilizers contain a large amount of organic matter and are a place where various microorganisms grow and grow. According to Huang Jingchun's research on deep-fertilization combined with organic fertilizer application, the soil nitrogen-fixing bacteria nearly doubled compared with the control, the fiber-decomposing bacteria increased nearly 2 times, and other microbial communities also increased significantly. Therefore, the application of organic fertilizer can greatly promote the ripening process of the newly-opened land.
In addition, organic fertilizer can also produce various phenols, vitamins, enzymes, auxins and other substances in the process of decomposition, which can promote the growth of crop roots and the absorption of nutrients. The experiment proves that the rapeseed cake is particularly effective in the tea garden, not only the nutrient rich in the vegetable cake, but more importantly, the rapeseed cake produces a substance that can stimulate the root growth during the decomposition process, promoting the growth of the tea root and absorbing the nutrients. . Other organic fertilizers have a similar effect.
3. Improve soil fertility and water retention capacity
All organic fertilizers have strong cation substitution ability, can absorb more nutrients such as potassium, ammonium, magnesium, zinc, etc., prevent leaching, improve soil fertility, especially the ability of composting organic fertilizer to protect fertilizer. obvious. In addition, the organic fertilizer also has a strong buffering capacity, which can prevent the acidity change and soil compaction caused by long-term application of chemical fertilizer, can improve the soil's own stress resistance, and ensure the soil's good ecological environment.
4, reduce nutrient fixation, improve nutrient effectiveness
Organic fertilizers contain many organic acids, humic acids, hydroxyls, etc., all of which have strong chelating ability, can chelate with many metal elements such as manganese, aluminum, iron, etc. to form a chelate compound, which can reduce manganese ions to crops. Hazard. It can prevent the combination of aluminum and phosphorus into a closed-state phosphorus that is difficult to be absorbed by crops, and effectively invalidate the effectiveness of available phosphorus in the soil.
5. Accelerate the formation of soil aggregates and improve soil physical and chemical properties
Organic-inorganic agglomerates are important indicators of soil fertility. The more the content, the better the soil physical properties, the more fertile the soil, the stronger the soil, water retention and fertilizer retention capacity, the better the aeration performance, the more favorable the crop root growth.