Organic Fertilizer Can Protect Water and Soil Fertility
Soil organic matter in nature, is mainly from the ground vegetation, as well as soil microorganisms, soil animals, and roots of plant debris. It is a stable humic substance formed by complex biochemical processes and is closely bound with soil particles. It is a main body of soil organic matter and a major part of the total organic matter. It is one of the main indicators of soil fertility level.
1. Usually humus is an organic colloid.Its huge surface area and surface energy make it have an important effect on the adsorption of soluble nutrients. The substitution of humus is four or five times larger than that of clay, which can enhance soil fertility
2. Soil porosity increases because, organic matter has loose soil effect, thereby it can improve soil water permeability. The water absorption of humus is 10 times that of clay, and the pore condition of soil is improved, so it can significantly improve the soil water retention.
3. Soil humus is weak acid, and its salts have amphoteric colloid properties, which can buffer acid base change of soil solution, and its acidity can promote reaction with insoluble phosphorus and increase solubility of phosphorus.
4. Fresh humus is a good soil structure cement. It can promote good structure formation, increase soil looseness, permeability. The formation of a large aggregate structure is related to the abundance of organic matter. Fungal hyphae wound soil aggregate structure is more stable. Soil organic matter is a dark color, endothermic and increase soil temperature, affecting water and heat conditions.
