Does applying organic fertilizer to the soil necessarily increase the humus content?

Looking at the decomposition of organic fertilizer and what raw materials are produced, it should be able to increase the content of organic matter. The technology for producing organic fertilizers can tell you a little bit about it.

Yes, the organic matter in the organic fertilizer can attach to the fertilizer in the soil.

Advantages of organic fertilizer:

Rich in organic matter and various nutrients, it can not only provide nutrients directly for crops, but also activate potential nutrients in the soil, enhance microbial activity, and promote the transformation of substances.

The application of organic fertilizer can also improve soil physical and chemical properties, improve soil fertility, and prevent and control soil pollution, which chemical fertilizers do not have. Making full use of the scientific accumulation and rational application of organic fertilizer sources can not only reuse agricultural waste, reduce chemical fertilizer investment, protect the rural environment, and create a good agricultural ecosystem, but also achieve the purpose of fertilizing soil with stable and high yield, increasing yield and income.

Improve the content of soil organic matter, renew the composition of soil humus, and increase soil fertilizer.

Soil organic matter is an important indicator of soil fertility and the material basis for the formation of a good soil environment. Soil organic matter consists of undecomposed, semi-decomposed organic matter residues and humus in the soil. The fresh organic fertilizer in the applied soil, under the action of microorganisms, decomposes and converts into simple compounds, and at the same time, through the action of biochemistry, it is recombined into new, more complex and relatively stable soil-specific macromolecular polymer organic compounds, which are black or brown organic colloids, that is, humus.

Humus is the stable organic matter in the soil and has an important impact on soil fertility.

Improve soil physical properties.

Organic fertilizer produces hydroxyl ligands in the process of decomposition, which combine with polyvalent metal ions on the surface of soil clay or hydroxide polymer to form aggregates, and the density of organic fertilizer is generally smaller than that of soil, and the organic fertilizer applied to the soil can reduce the bulk density of the soil, improve the soil aeration condition, reduce the soil planting resistance, and make the tillage better. The organic quality has strong water retention ability, large specific heat capacity, small thermal conductivity, dark color, easy heat absorption, and good temperature regulation.

If organic fertilizers are not applied to the soil, the humus content in it may decrease year by year.

Humus is a long-term organic matter formed by the old Xingzhi species, which usually exists in the surface layer of the soil, and plays an important role in soil fertility, water retention capacity, microbial activity, etc. Organic fertilizers are rich in organic matter, which can be gradually converted into humus and stored in the soil through the decomposition of soil microorganisms.

If no organic fertilizer is applied to the soil for a long time, the humus in it will be gradually lost or degraded through natural decomposition and the influence of other factors (such as human activities, climate change, etc.). Therefore, making sure to add organic fertilizers regularly can help maintain the humus content in the soil and improve soil fertility and crop yields.

According to the characteristics of the soil, climatic conditions and the characteristics of crop growth and development, formula fertilization, strict control of the use of toxic chemical fertilizers and dosage.

Increasing the application of organic fertilizer and increasing the content of soil organic matter can enhance the adsorption capacity of soil colloids to heavy metals and pesticides. For example, brown fulvic acid can absorb and dissolve trichlorobenzene herbicides and some pesticides, and humus can promote the precipitation of cadmium. At the same time, the addition of organic fertilizer can also improve the flow conditions of soil microorganisms and accelerate the biodegradation process.

Not necessarily. When the soil organic matter content has reached the organic matter content of an organic fertilizer, the more the organic fertilizer is used, the higher the soil organic matter content will increase?

Soil organic matter content refers to the amount of various animal and plant residues and microorganisms and the organic matter decomposed and synthesized into a unit volume of soil. It is generally expressed as a percentage of the weight of organic matter in dry soil.

Soil organic matter content is greatly affected by climate, especially the hydrothermal status of soil and the nature and intensity of physical and chemical processes; Generally speaking, as a large area, the soil organic matter content should be relatively stable. When the climatic conditions such as water and heat are suitable, and the content of available nitrogen is high, the decomposition of organic matter is faster, and the improvement of soil organic matter over time is not necessarily proportional to the amount of organic fertilizer input. As a small area (such as a greenhouse or a certain plot), organic fertilizer resources are sufficient, and the organic matter content of organic fertilizer is high, the more organic fertilizer is applied to the soil, the higher the soil organic matter content will be increased.

Decomposition is a stage in the decomposition process of organic fertilizers. At this stage, the organic matter has changed to the point where it is unrecognizable in its original form, becoming a black and soft substance, sometimes smelly, losing two-thirds of its original weight (generally 3 tons of organic fertilizer raw materials can rot 1 ton of organic fertilizer), and becoming smaller in the ratio of carbon to nitrogen. Before the application of organic fertilizer, it is necessary to emphasize the decomposing, because most of the nutrients contained in the organic fertilizer that are not decomposed are retarded, and the crops cannot be directly absorbed and utilized.

Organic fertilizer that is not well decomposed when applied to the soil is not only inefficient, but also breeds weeds and spreads germs and eggs. Therefore, the purpose of organic fertilizer decomposition is to release nutrients to improve fertilizer efficiency, and at the same time avoid some adverse effects on crops when fertilizer is decomposed in the soil, especially the high temperature generated, which is easy to "burn seedlings".

The decomposition of organic fertilizers is a complex process. The process of mineralization and humification of organic matter can only be carried out under soil microbial crops. In order for organic matter to be decomposed, the release of nutrients must rely on the activities of microorganisms.

In the process of decaying, the decomposition and synthesis of organic matter are carried out at the same time.

On the one hand, some organic substances change from complex forms to simple forms, from water-insoluble substances to water-soluble substances, so as to improve the effectiveness of nutrients and make nutrients easy to be absorbed and utilized by crops, which is mineralization;

On the other hand, some simple compounds or intermediate products in the decomposition process, under the action of microorganisms, are resynthesized into complex compounds, and finally can be synthesized into humus, which is humification.

Therefore, the production of humus is an important indicator of the decomposition of organic fertilizer, and its content is closely related to the quality of organic fertilizer.

The migration of humus to elements is mainly manifested in the surface adsorption and ion exchange adsorption of metal ions by organic colloids, and the integration and complexation of humic acids on elements.

Interpretation: Humus is a colloidal substance formed by the decomposition and transformation of organic matter by microorganisms, which is generally black or dark brown, and is the main component of soil organic matter (50% 65%). Humus is mainly composed of carbon, hydrogen, oxygen, nitrogen, sulfur, phosphorus and other nutrients, and its main types are humic acid and fulvic acid (also known as fuli acid).

Humus has moderate cohesiveness, which can make clay loose and sandy soil cohesive, and is a good cementing agent for forming an agglomerate structure.

The decomposition of organic fertilizer means that the organic fertilizer is composted and changed from raw manure to mature manure. Its essence is that in the process of stacking, through the action of microorganisms, the organic matter that is difficult to be used by crops is turned into nutrients that are easy to be absorbed and utilized by crops, so as to achieve effectiveness; The 60 70 high temperature produced in the pile can kill most of the germs and insect eggs, and achieve harmlessness. When we went to the countryside, we found that many vegetable farmers and fruit farmers directly applied unrotted organic fertilizer to the ground, and the nutrient state of these organic fertilizers was slow when they were not ripe, and could not be directly absorbed and utilized by the roots of fruit trees, and in the process of underground decay, it was easy to generate heat and burn seedlings.

In addition, the unrotted organic fertilizer contains a large amount of animal organic matter, so it has become an ideal wintering place for many fruit tree pests, especially easy to attract beetles (grubs), peach heartworms, inchworms, scaphoid caterpillars, pear blossom net bugs, etc., which are extremely unfavorable to pest control. Therefore, it is important to learn from this and that organic fertilizer must be applied only after it has rotted. Imported car market.

For agricultural planting, the application of base fertilizer is very important for improving the soil and supplementing the nutrients needed by plants, and it is found that many people are very casual for the application of base fertilizer, and some manure is not rotted and applied, which will lead to root burning, carrying harmful bacteria and pests into the soil, and in serious cases, it will also emit harmful gases, hurt trees and roots.

Therefore, the base fertilizer of the plant must be well rotted, don't underestimate this, because the final income is not the same.

It is recommended to use well-rotted sheep manure, and it will be better to add bacteria to rot it twice.