Soil organic matter refers to the carbonaceous organic compounds in the soil in various forms, and refers to the material in the soil that originates from life, and is the material in the soil other than minerals, air and water, which is the most active part of the soil and is one of the important indicators of soil fertility. It can be said that without organic matter there is no soil fertility.
Why organic matter is so important, it has to start from its function, seven major roles determine the level of
soil fertility.
Organic Matter is the Main Source of Soil Nutrients
Organic matter contains a variety of nutrients required for crop growth, can directly or indirectly provide N, P, K, Ca, Mg, S and other trace elements for crop growth, WeChat search vegetable farmers circle concern. More than 95% of N elements are present in the soil in organic state. In addition to the applied N fertilizer, the main source of soil N elements is provided by the decomposition of organic matter.
Organic Matter can Promote the Growth and Development of Crops
Humic acid in organic matter can enhance plant respiration, improve the permeability of cell membranes and enhance the absorption of nutrients. Meanwhile, the vitamins and some hormones in organic matter can promote the growth and development of plants.