Welcome to Guangdong Volkswagen agricultural Polytron Technologies!
Securities Code:833759

Soil auditorium
Location:Home > News > Soil auditorium

Effect of soil organic matter on soil fertility

Publisher:Time:2015-11-08 18:21:26Views:


Soil fertility is an important indicator of soil fertility, which is the ability to measure the variety of soil nutrients required to provide crop growth. The comprehensive performance of a variety of basic soil properties, is the difference between the soils from the essential features of soil parent material and other natural body and soil as the material basis of natural resources and agricultural means of production. The soil fertility can be divided into natural and man-made soil according to the cause of formation. The former refers to in five major soil forming factors (climate, biology, parent material, topography and age) under the influence of the formation of fertility, mainly exist in uncultivated natural soil; the latter refers to long-term under artificial cultivation, fertilization, irrigation and other various farming activities affect the fertility, mainly in farming land soil.

Soil fertility is the basic soil properties and essential characters of, is the soil for plant growth ability to supply and coordinate nutrient, moisture, air and heat, is an integrated response of soil physical, chemical and biological properties, soil is also different in the nature of the parent material. Including natural fertility, artificial fertility and the combination of the two economic fertility.
Natural fertility is formed by the action of soil parent material, climate, biology, topography and other natural factors of soil fertility, is a comprehensive expression of soil physical, chemical and biological characteristics. Its formation and development depend on the quality, quantity and combination of various natural factors. Natural fertility is the product of natural reproduction process, it is the basis of land productivity, it can spontaneously grow natural vegetation.
Artificial soil fertility is the soil fertility, which is formed under the influence of human production activities, such as tillage, fertilization, irrigation and soil improvement. The combination of natural and artificial fertility of the soil can be used to produce the abundant agricultural products. Economic fertility is the unification of natural fertility and artificial fertility, which is formed by the combination of two kinds of fertility in the same soil. Only with the natural fertility of the soil, there is no trace of human past labor. But with the soil fertility of the soil, because of the artificial fertility, it is human's labor. Since artificial fertility is the formation of people's production activities, people can use all natural conditions and social conditions to promote the formation of artificial fertility, and accelerate the transformation of potential fertility, so that the land as soon as possible into production.
Soil organic matter is the organic substance that exists in the soil. It includes a variety of animal and plant residues, microorganisms and decomposition and synthesis of a variety of organic matter. Soil organic matter is an important component of the soil solid phase, although the content of soil organic matter is only a very small part of the soil, but it has a very important role in soil formation, soil fertility, environmental protection and sustainable development of agriculture and forestry. The source of organic matter in soil is very extensive. Soil organic matter can be divided into corrosion and non corrosive. Microorganism is the earliest source of soil organic matter.
How much is the organic matter in the soil, it is an important symbol to measure the soil fertility level, it has the important function to the soil fertility.
(1) is an important source of carbon, nitrogen, phosphorus and other nutrients in soil. 95% of the nitrogen present in the soil organic matter. At the same time, it also contains a certain amount of nutrients, such as sulfur, potassium, calcium, magnesium, iron and other nutrients, the supply of crops. In addition, organic acid and carbonic acid produced by the organic matter in the process of decomposition can promote the release of soil nutrient.
(2) can promote the formation of soil aggregate structure. After the organic matter is decomposed by microorganisms, it can produce a kind of material which can be cemented by soil particles, which can make the small soil particles bonded to the ball.
(3) can improve soil properties. After the organic matter decomposition, it can produce the cementing material, which can reduce the viscosity of clay, improve the soil quality and the effect of the soil and the permeability.
(4) increase the water retention properties of soil. Topsoil organic matter containing multiple, can make the soil is loose and porous, surface water can seep into, also because of the organic matter of strong water absorption and improve the water retention capacity of soil.
(5) can improve soil fertility. Because of the adsorption of soil organic matter, can absorb and accommodate a variety of nutrients, to avoid loss. At the same time, it can also be used to buffer the strong acid and alkali changes caused by the application of chemical fertilizer, which is conducive to the growth of crops.


4008807696
0769-88431833