What is biological fertilizer and what are the common types of biological fertilizers

Biofertilizers, also known as microbial fertilizers, bacterial fertilizers, and hundred fertilizers, utilize microorganisms to fix nitrogen and decompose soil minerals and organic matter, thereby stimulating crop root growth and promoting crop absorption of various nutrients in the soil.
Biogenic fertilizers can improve soil, activate nutrients fixed by the soil, improve fertilizer utilization efficiency, and provide a favorable ecological environment for crop rhizosphere. They are ideal fertilizers for green and organic agriculture.
Biological fertilizers added to special generic compound fertilizers include compound microbial fertilizer, phosphorus fertilizer, silicate fertilizer, biological Organic fertilizer, etc.
What are the common biological fertilizers? 1. Rhizobium fertilizer is used for leguminous crops, generally used for seed dressing.
Use 30-40 grams per 667 square meters and add an appropriate amount of water to adhere to the seeds.
It is required to mix and sow as needed, and avoid drying and direct sunlight.
After 48 hours, the seeds should be remixed.
When poor nodulation effect is found after crop emergence, the rhizobium fertilizer for water can be poured near the seedlings.
If pesticide treated seeds are used, they should be mixed 2-3 weeks before Rhizobia.
2. Nitrogen fixing agents can be applied to various crops except leguminous crops, such as wheat, corn, vegetables, etc.
It can be used as base fertilizer, topdressing, or for dipping roots or mixing seeds.
Cannot be used together with strong acids, alkalis, or effective pesticides or fertilizers.
It cannot be applied simultaneously with a large amount of nitrogen fertilizer, at least 10 days apart.
However, mixed application with Manure, phosphorus and potassium fertilizer is conducive to promoting the activity of nitrogen fixing bacteria.
For every 667 square meters, the dosage is 0.5-1 kilograms. First, wet the crop seeds with clean water, sprinkle with bacterial agents, and mix well. First, mix with bran, crushed corn, and phosphate fertilizer to form a nutrient solution, and then pour the seeds in and mix well.
When topdressing, it can be mixed with soil manure and applied in a ditch or hole near the plant.
3. Antibiotic agents can reduce crop rot and root rot, increase seedling emergence rate, and promote growth, promoting early ripening.
It also has a certain inhibitory effect on some underground pests.
Wheat and beans can be mixed with mushroom powder.
First, wet the seeds with water and mix 30-50 grams of mushroom powder per 667 square meters. Alternatively, 5-10 portions of mushroom powder can be mixed with 10 portions of cake powder and 100-300 portions of fertilizer soil.
As base fertilizer or topdressing, 100-250 kg per 667 square meters is used. It is effective to mix it with Superphosphate as seed fertilizer.
It can be mixed with insecticides, but cannot be mixed with pesticides.
Ammonium sulfate, Ammonium nitrate and Ammonium bicarbonate can inhibit it, and the antibiotic fertilizer can be used more than 10 days after application.
4. Phosphorus fungicides can generally be divided into two types: one is organic phosphorus, which uses enzymes produced in life activities to convert difficult to utilize organic phosphorus into forms that can be utilized by plants; Another type is inorganic phosphorus, which enhances the dissolution of insoluble phosphates in the soil through the acids it produces.
It can be used as a base fertilizer or mixed with nitrogen-fixing bacteria and antibiotics for fertilizer efficiency.
5. Potassium fungicide can be applied to crops such as wheat, corn, and vegetables, and its application range is wide,.
Used as a base fertilizer, 25 kilograms per 667 square meters; For seed mixing, 5 kilograms per 667 square meters, mixed with dry and fine soil to form a thin paste for seed mixing; Used as top dressing, mix 20 kilograms of bacterial fertilizer with 2500 kilograms of pig manure, and apply it in strips or holes in the sowing ditch.
After application, soil should be immediately covered to maintain a dark and moist state.
Combining other cultivation measures, such as timely drainage and irrigation, intermediate tillage and soil loosening.