Degree of industrialization: farmyard manure and commercial organic fertilizer

The processing technology is different: commercial organic fertilizer, bio-organic fertilizer and organic-inorganic compound fertilizer.

Different fermentation treatments: anaerobic fermentation organic fertilizer and aerobic fermentation organic fertilizer.

Fermentation raw materials are different: straw organic fertilizer, soybean meal organic fertilizer, cow manure organic fertilizer, sheep manure organic fertilizer, self-made compost and so on.

Main features:

Farm manure: The history of traditional farm manure fertilization can be traced back to Shang Dynasty. It is said that Yi Yin created the plot field method, and the use of farmyard manure can increase the yield. Including human feces, livestock feces, food, bird droppings, silkworm excrement, etc. Various cake fertilizers and refined slag fertilizers; There are animal sea fertilizer, plant sea fertilizer and mineral sea fertilizer; There are winter green manure, summer green manure, aquatic green manure, perennial green manure and wild green manure; There are peat and lignite; There are smoked soil, pit soil, nitrate soil, garbage, chimney ash, fat mud, plant ash and so on. It can be said that there are many kinds of prints.

Because of production conditions and industrialization, it is different from commercial organic fertilizer.

Commercial organic fertilizer: Commercial organic fertilizer has changed from traditional mode to factory unit, and its scale and production capacity have increased rapidly.

Its characteristics:

Improve soil organic matter content. Regular application of organic fertilizer can obviously increase the content of soil organic matter, which is conducive to maintaining the stability of soil organic matter and improving the physical and chemical properties of soil.

Promote the formation of soil aggregate structure. Soil organic matter, calcium carbonate and polysaccharide have good effects on the stability of soil structure. Applying organic fertilizer can improve the content of soil organic matter more than applying organic fertilizer, especially can produce more pentose, hexose and polysaccharide. This is especially beneficial to the formation of water-stable aggregates, such as the obvious increase of water-stable aggregates larger than 0.25 mm

Provide nutrition. Organic fertilizer contains all kinds of nutrients needed by crops, and the use of organic fertilizer can obviously improve the content of nutrients, especially potassium, in topsoil. The investigation of cultivated land in China 1995 by the Ministry of Agriculture showed that the phosphorus content in cultivated land increased compared with that before 1990, but the cultivated land lacking potassium and trace elements expanded, and advocating returning straw to the field was beneficial to partially returning soil potassium.

Regulate nitrogen supply in soil. In the early stage of decomposing straw with large C/N ratio, microorganisms should absorb nitrogen from soil to form their own somatic cells, which leads to the biological fixation of soil nitrogen and plays a role in temporarily preserving nitrogen. When microorganisms die, this part of nitrogen is decomposed and released. In addition, the application of organic fertilizer increases the energy substances in the soil and is also beneficial to biological nitrogen fixation. The content of organic matter in organic fertilizer can reach about 30%. Relevant data show that the energy released by each oxidation of 1.0g carbon can meet the needs of nitrogen-fixing microorganisms to fix 10~40mg nitrogen.

Improve the activities of soil microorganisms and soil enzymes. After the application of organic fertilizer, the number of microorganisms increased obviously, especially in the soil near the application of organic fertilizer, which played a very good role in accelerating the release of organic nutrients and activating nutrients in the soil. In addition, organic fertilizer can also reduce the diseases of some crops.

Advantages of applying organic fertilizer in agricultural production include:

1, balanced nutrition, promoting crop growth, obviously increasing yield and high fertilizer efficiency;

2. Improve the quality of agricultural products;

3, inhibiting pathogenic bacteria and reducing pests and diseases;

4. Loosening and improving the soil to reduce nitrate pollution in the soil;

5, increase the water absorption of crops, and enhance the drought resistance and lodging resistance of crops;

6. Through scientific management, the planted crops can reach the national green food fertilizer standard "A level" or "AA level".

As for other organic fertilizers, the main difference is that the raw materials are different and the process is different. Such as cow manure organic fertilizer, chicken manure organic fertilizer, sheep manure organic fertilizer, etc. Its raw materials determine its nutritional characteristics.

For example, cow dung organic fertilizer is rich in fiber, which can improve soil hardening and make soil fluffy; Chicken manure organic fertilizer can be used as high-quality base fertilizer for planting crops and also as base fertilizer for planting fruit trees in winter.