What is the research status and prospect of the impact of organic mulching measures on soil fertilit

China advocates the application of organic fertilizer and biological organic fertilizer. It can improve soil fertility and water retention capacity, organic fertilizer microorganisms have strong vitality, long-term survival in the soil, nitrogen-fixing bacteria, phosphate-solubilizing bacteria, potassium-solubilizing bacteria and other microorganisms, can use nitrogen in the air, release potassium and phosphorus in the soil that are not easy to be absorbed by crops, and the sustained nutrition of crops.

The organic matter in the soil can significantly improve the physical and chemical properties of the soil, make the soil tillage better, improve the water seepage capacity, improve the soil water storage, fertilization, fertilizer supply, drought and flood control ability, significantly increase the yield, and chemical fertilizer is irreplaceable. The main way to increase soil organic matter is to increase the amount of organic fertilizer applied. At present, it can improve soil fertility and water retention capacity, organic fertilizer microorganisms have strong vitality, long-term survival in the soil, nitrogen-fixing bacteria, phosphate-solubilizing bacteria, potassium-solubilizing bacteria and other microorganisms, can use nitrogen in the air, release potassium and phosphorus in the soil that are not easy to be absorbed by crops, crop nutrients sustained.

The nutrient-providing integrated bio-organic fertilizer contains a large number of beneficial microorganisms, which can decompose the organic matter in the soil, increase the structure of soil aggregates, and improve soil composition. Microbes multiply in the soil so quickly that they act like an invisible web. After the death of microorganisms, there are many thin tubes in the soil.

These thin tubes not only increase the permeability of the soil, but also make the soil fluffy and soft, and the nutrient and water are not easy to lose, increasing the water storage capacity of the soil.

The application of nitrogen fertilizer disrupts the balance of the soil microbial community, intensifies the activity of microorganisms, accelerates the mineralization of the soil, and a large amount of clay material is mineralized and decomposed into salt. Soil secondary salinization was severe, and salt stress inhibited crop growth. Fertility is declining.

Organic matter is the food and energy of microorganisms**, only when the content of soil organic matter increases, the number and type of microorganisms can improve the health of the soil, the role of soil microorganisms in the soil and crops is self-evident, the limited space is occupied by soil microorganisms, soil pathogens have no room to survive, and soil diseases can be effectively controlled. Therefore, soil-borne diseases are rooted in the reduction of soil organic matter. Excessive use of fertilizers and chemical pesticides can only lead to a vicious cycle.

In order to effectively control soil-borne diseases, it is necessary to increase the content of soil organic matter.

Improve soil nutrition and increase soil fertility. At present, there are more and more studies on the impact of organic matter cover on soil environment, but the results have not been uniformly determined, there is a lack of long-term positioning observation data, its mechanism has not been studied clearly, and the technical system in production practice is not perfect.

The current situation is very good, and at the same time, there can be very good development, which can improve the fertility of the soil and promote the increase of food production in the future.

Advocate the use of organic fertilizers and promote the use of biological fertilizers, which can better protect the environment, and are also good for plants and can avoid pollution.

Briefly describe the effect of soil texture on soil fertility, which texture is more powerful for fertility?

Increase fertility: Apply compost and other agricultural fertilizers with high organic matter content to increase and maintain soil fertility. 2. Reasonable crop rotation:

Cropping in the family Doujia crops is rotated every four years to increase the amount of nitrogen in the soil. 3. Increase the application of soil amendment: improve the water retention of soil and improve the adsorption performance of soil.

4. Returning straw to the field: return the chopped straw directly to the field.

The application of organic fertilizer can effectively increase the content of soil organic matter and increase the number of beneficial bacteria and microorganisms.

1.The soil is high in minerals and organic matter.

2.The humus layer is deeply accumulated.

3.The soil has good water permeability and strong fertilizer retention ability.

1. Nutrient factors: refers to the nutrient storage, intensity factors and capacity factors in the soil, which mainly depend on the quantity and composition of soil minerals and organic matter.

2. Physical factors: refers to the texture, structure, porosity, moisture and temperature of the soil. They affect the oxygen content, redox and aeration of the soil, thereby affecting the conversion rate and existence of nutrients in the soil, the nature and operation of soil moisture, and the growth capacity and physiological activities of plant roots.

3. Chemical factors: refers to the pH of the soil, cation adsorption and exchange properties, soil reducing substances, soil salinity, and the content of other toxic substances.

4. Biological factors: refers to microorganisms in the soil and their physiological activities.

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.