Organic fertilizer on the soil of the 5 role! No substitute!

Organic fertilizers are derived primarily from plants and/or animals and are applied to the soil to provide plant nutrients in the form of primarily functional carbonaceous materials. It is processed by biological substances, animal and plant wastes and plant residues, which eliminates toxic and harmful substances and is rich in a large number of beneficial substances, including a variety of organic acids, peptides and rich nutrient elements including nitrogen, phosphorus and potassium.

At present, more than 40% of China's total cultivated land has been degraded. Soil fertility and soil use efficiency are two key factors to increase grain yield.

The contribution rate of soil fertility in European and American countries is 72%, but it is only 52% in our country. The quality of cultivated land is poor, the utilization rate of water and fertilizer is high, and the contribution rate of soil fertility is inevitably low. This set of figures is enough to show that China has paid a lot of water and fertilizer inputs in return for high-yield food.

Therefore, improving the fertility of farmland soil and storing grain in soil is an important basis and strategic choice to ensure our food security and ecological environment security.

What are the benefits of applying organic fertilizers to the soil?

1. Provide comprehensive nutrition. Organic fertilizers are complete fertilizers

Contains nutrients needed by crops and a variety of beneficial elements, nutrient ratio comprehensive, conducive to crop absorption. Therefore, the more organic fertilizer is applied, the more favorable the balance of soil nutrient ratio will be, and the more favorable the absorption and utilization of soil nutrients by crops will be. More organic fertilizers do not lead to large increases in soil nutrients, nor do they destroy them.

2. Promote the propagation of soil microorganisms

Organic fertilizer contains a lot of organic matter, is a variety of microbial growth and reproduction place. After deep tillage and application of organic fertilizer, soil nitrogen-fixing bacteria almost doubled compared with the control, fiber decomposing bacteria nearly doubled, and other microbial communities also increased significantly. Therefore, application of organic fertilizer can greatly promote the ripening process of newly reclaimed land.

In addition, organic fertilizer in the process of decomposition can also produce a variety of phenols, vitamins, enzymes, auxin and other substances, can promote the growth of crop roots and nutrient absorption.

3, improve soil fertility and water retention capacity

Organic fertilizers have strong cationic substitution ability, which can absorb more potassium, ammonium, magnesium, zinc and other nutrients to prevent leaching and improve soil fertility retention ability, especially decomposed organic fertilizers.

In addition, organic fertilizer also has a strong buffer capacity, which can prevent the change of acidity and soil compaction caused by long-term application of chemical fertilizer, improve the resistance of soil itself, and ensure a good soil ecological environment.

4. Reduce nutrient fixation and improve nutrient utilization

Organic fertilizers contain many organic acids, humic acids, hydroxyl groups and other substances. They have strong chelating ability, and can be chelated with manganese, aluminum, iron and many other metal elements to form chelates, which can reduce the impact of manganese ions on crops. Harm. It can also prevent aluminum and phosphorus from mixing with difficult to be absorbed by crops and becoming ineffective closed storage phosphorus, thus greatly improving the availability of soil available phosphorus.

5. Accelerate the formation of soil aggregates and improve soil physical and chemical properties

Organic-inorganic aggregates are important indexes of soil fertility. The higher the content, the better the physical properties of the soil, the more fertile the soil, the stronger the retention capacity of soil, water and fertilizer, the better the aeration performance, and the better the root growth of crops.