What are the biological fertilizers?

As we all know, biological fertilizer, like chemical fertilizer and organic fertilizer, is an important fertilizer source in agricultural production. However, judging from the current trend, biological fertilizer is pollution-free and does not pollute the environment, which is more in line with the development of green agriculture advocated by modern times. The following editor introduces five common biological fertilizers.

1. Rhizobium fertilizer

It is used in legume crops and is generally used for seed dressing. Every 667 square meters with 30-40 grams, plus an appropriate amount of water are adhered to the seeds. It is required to sow with mixing, avoid drying and direct sunlight. Seeds should be re-mixed for more than 48 hours. When it is found that the nodulation effect of crops is poor after emergence, rhizobium fertilizer can be poured near the seedlings. If the seeds sterilized by pesticides should be disinfected 2-3 weeks before the rhizobium is mixed.

2. Nitrogen fixing bacteria

All kinds of crops except legumes, such as wheat, corn, vegetables and so on, can be applied. It can be used as base fertilizer, topdressing, or dipped in root and seed dressing. Can not be used at the same time with strong acid, strong alkali or germicidal pesticides and fertilizers. Nor can it be applied at the same time with a large amount of nitrogen fertilizer, at least 10 days apart. However, the mixed application of organic fertilizer and phosphorus and potassium fertilizer was beneficial to promote the activity of nitrogen-fixing bacteria. Every 667 square meters 0.5-1 kg, first wet the crop seeds with water, sprinkle with bacteria and mix well, it is best to mix with bran bran, chopped corn and phosphate fertilizer into a nutrient solution, then pour in the seeds and mix well. Topdressing can be mixed with soil manure and ditch application or hole application near the plant.

3.Antimicrobial agents

It can reduce the rotten roots of crops, increase the emergence rate, promote growth and promote early maturity. It also has a certain inhibitory effect on some underground pests. Wheat and beans can be mixed with fungus powder. First wet the seeds with water, mix well with 30-50 grams of bacterial powder for every 667 square meters, or mix 5-10 parts of bacterial powder into 10 parts of cake powder and 100-300 parts of cake soil. As base fertilizer or topdressing, 100-250 kg per 667 square meters, mixed with calcium superphosphate as seed fertilizer. It can be mixed with pesticides, but not with fungicides. Ammonium sulfate, ammonium nitrate and ammonium bicarbonate had inhibitory effect on it, and antibacterial fertilizer could not be used until more than 10 days after application.

4. Phosphorus bacteria

Generally, there are two kinds of organophosphorus bacteria: one is organophosphorus bacteria, which converts difficult-to-use organophosphorus into forms that can be used by plants with the help of enzymes produced in bacterial life activities, and the other is inorganic phosphorous bacteria, through the acids produced by them, enhance the dissolution of insoluble phosphate in the soil. It can be used as base fertilizer or mixed with nitrogen fixing bacteria and antibacterial agents, and the fertilizer effect is the best.

5. Potassium bacteria

Wheat, corn, vegetables and other crops can apply potassium bacteria, and it has a wide range of applications. Used as base fertilizer, 25kg per 667m2; for seed dressing, 5kg per 667m2, mixed with dry fine soil into dilute paste; used as topdressing, 20kg of bacterial fertilizer mixed with 2500 kg of pig manure, strip or hole application in the sowing ditch. The soil should be covered immediately after application to keep it dark and moist. Combined with other cultivation measures, such as timely drainage and irrigation, ploughing and loosening soil, etc.

Biological fertilizer is a kind of live bacterial products, its efficiency is directly related to its use, you can refer to the above application.

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