The Top 10 Roles of Organic Fertilizer

Any organic material (compounds containing carbon elements) used as fertilizer is called organic fertilizer. Generally speaking, organic fertilizer is the residue of dead plants and animals and manure excreted by animals. Organic fertilizers are divided into commercial organic fertilizers and agricultural fertilizers. Agricultural fertilizers include soil fertilizer, stable fertilizer, circle fertilizer, compost, compost, green manure, human urine and manure, etc. So what does organic fertilizer do?

First, it can increase the agglomerate structure of soil.

Soil agglomerate structure is a soil structure formed by a number of soil particles bonded together as agglomerates. Small pores are formed between single grains, and large pores are formed between agglomerates. Small pores can keep water, and large pores can keep ventilation. Soil with agglomerate structure can ensure the good growth of plant roots and is suitable for crop cultivation and growth. The role of agglomerate structure in soil fertility.

① It reconciles water and air.

② It can reconcile the contradiction between the consumption and accumulation of nutrients in soil organic matter.

③ It can stabilize soil temperature and regulate soil heat condition.

④ Improves tillage and facilitates the extension of crop roots.

Second, it can improve the permeability and looseness of the soil.

Fruit tree leaves suck in carbon dioxide and exhale oxygen; root system suck in oxygen and exhale carbon dioxide. In order to carry out the normal nutrient cycle, the surface shallow respiratory roots must have sufficient oxygen supply, which requires the soil to have looseness and permeability. Soil permeability is proportional to the size of the soil particles and is influenced by the water content of the soil, temperature, atmospheric pressure and air temperature. Soil permeability is also called soil aeration, which is the performance of the mutual exchange between soil air and atmosphere, or the rate at which the atmosphere enters the soil. It is closely related to the soil structure, especially with the pore characteristics, the total porosity or a high proportion of large pores of the soil, has good permeability. For example, well-structured soils have better permeability than poorly structured soils; sandy soils are better than clayey soils; soils with moderate moisture content are better than excessively moist ones; surface soils are better than lower soils, etc.

Third, it can improve the soil and balance the acidity and alkalinity.

The strength of soil acidity and alkalinity is often measured by the degree of acidity and alkalinity. Soil has acidity and alkalinity because there are small amounts of hydrogen ions and hydroxide ions in the soil. When the concentration of hydrogen ions is greater than the concentration of hydroxide ions, the soil is acidic; vice versa, it is alkaline; when they are equal, it is neutral. Most of the soil pH in China is within the range of 4.5 to 8.5, and the pH value increases from south to north, forming the trend of "south acid and north alkali". Due to the difference in climate between the south and north of China, the south is wet and rainy, the soil is mostly acidic, while the north is dry and less rainy, the soil is mostly alkaline. Soils that are too acidic or too alkaline will reduce the effectiveness of soil nutrients to varying degrees, making it difficult to form a good soil structure and seriously inhibiting the activities of soil microorganisms, affecting the growth and development of various crops.

Fourth, it can improve the quality of agricultural products.

Changes in the main organic components in fruits.

1, Water. Except for chestnuts, walnuts and other nuts and other dry fruits, the water content of most fruits is 80% to 90%.

2, Sugar, acid. Sugar, acid content and sugar-acid ratio is the main sign of fruit quality. Fruits in sugar to glucose, fructose and sucrose most, starch exists in the green fruit, different fruit species contain sugars also vary, such as grapes, figs, cherries in glucose, fructose; peaches, plums, apricots in sucrose more than reducing sugar. Organic acids in the fruit are mainly malic acid, citric acid, tartaric acid, apples, pears, peaches with malic acid, citrus, pomegranate, figs, citric acid is the main, the acid in the fruit in the young fruit content is low, with the growth of the fruit and improve, nearly mature fashion as a respiratory substrate and decomposition.

3, Pectin. The endogenous cause of fruit hardness is the intercellular binding force, the mechanical strength of cellular constituent substances and cell expansion pressure, the intercellular binding force is influenced by pectin. Immature fruit original pectin exists in the primordial wall of the middle gum layer, so that the cells are connected to each other, with the maturation of the fruit, under the action of enzymes into soluble pectin and pectinate, so that the flesh of the fruit becomes soft. The content of cellulose and calcium has a great influence on the hardness of the fruit.

4, The aroma and odor of the fruit. Aroma and odor is an important factor in determining the quality of the fruit. Many fruits have astringent taste, mainly tannin substances, citrus in the bitter taste of the main component is naringin. The fruit also contains vitamins, vitamin A is the yellow fruit containing more carotene, such as apricot, loquat, persimmon, etc. Prickly pear, date, Chinese kiwi, sea buckthorn contains relatively high vitamin C. High content in the young fruit containing chlorophyll, with the growth of the fruit, the absolute amount increases, but the content per unit of fresh weight decreases, the peel is higher than the heart of the fruit, sunny side is higher than the backlight side.

5, The change of pigment. The color of the fruit has chlorophyll, carotenoids, anthocyanin, anthocyanin glycosides and flavonoids. The structure of carotenoids is tetraterpene (C), there are 500 kinds of carotenoids, which exist in chloroplasts and plastids, combined with proteins, have the role of protecting cells from strong light damage, when the fruit is ripe, chlorophyll decreases and carotenoids increase.

Fifth, it contains various nutrients.

Organic fertilizer contains not only rich organic matter and organic acids, such as humic acid, amino acids, xanthic acid, but also contains a variety of large, medium and trace elements, although the content is low, but more comprehensive. In general, nitrogen long leaves, phosphorus long flowers, potassium long fruits; silicon to protect the roots, calcium to protect the fruits, magnesium to protect the leaves, sulfur to protect the taste; iron to prevent yellow leaves, copper to prevent leaf drop, molybdenum to prevent flowering leaves, zinc to prevent small leaves, boron to prevent leaf curl.


Sixth, with long-lasting.

Real organic fertilizer shall not dissolve, and can not dissolve, because organic fertilizer contains a large amount of cellulose and lignin can not be dissolved by water, it must be through the soil microbial bacteria to decomposition, converted into amino acids and carbohydrates to be absorbed by the root system of fruit trees, which is a slow and lasting process.

Seventh, with efficiency.

Organic fertilizer decomposition, provide energy and nutrients for soil microbial activities, promote microbial activities, accelerate the decomposition of organic matter, the production of active substances, etc. can promote the growth of crops and improve the quality of agricultural products, not only eat melon sweet, eat wheat, more importantly, through the microbial decomposition of organic acids can activate the soil to be fixed mineral elements can be fully absorbed and used.

Eighth, with water retention.

Research information pointed out that: in organic fertilizer humus contains lipids, waxes and resins, because in the process of soil formation with higher fertility, these substances can infiltrate the soil mass, making it hydrophobic, weakening the process of soil wetting and capillary water movement rate, so that the evaporation of soil moisture is reduced and soil water holding capacity is enhanced, thus improving the soil moisture conditions.

The results of studying the hydrophilicity and hydrophobicity of humus showed that they are determined by the side chains on the edge of the huminic acid molecule, and when the degree of polymerization of the huminic acid molecule is small, the amount of dew of its side chain groups is larger, and there is an inverse relationship between them, and the relationship between humus substances and water molecules, to some extent, determines the moisture properties of organic substances.

The agglomerate structure is related to the organic matter content of the soil and the amount of organic fertilizer applied. The water-stable agglomerate structure ensures the looseness of the soil surface layer and facilitates soil permeability. This structure is characterized by loose agglomerates and large non-capillary porosity, thus reducing the height and speed of water capillary movement in the soil and reducing evaporation of water from the soil surface. The structural radius of soil particles with better agglomerate structure is larger than the structural radius of soil particles with poorer agglomerate structure, while the velocity of capillary water upward movement is inversely proportional to the radius of the structural unit.

Ninth, with insulation.

Organic fertilizer has the function of heat absorption and temperature increase, which is beneficial to the root sprouting and growth of fruit trees. Organic fertilizer in the process of decomposition will release a certain amount of heat, improve the temperature of the soil, at the same time, organic fertilizer heat capacity, good insulation performance, not easily affected by external cold and heat changes, winter frost protection, summer heat protection, which is very beneficial to fruit tree root sprouting, growth and overwintering.

Tenth, soil organic matter content is an important symbol of soil fertility test.

Soil organic matter is a general term for the material in the soil that comes from life. Soil organic matter is an important component of the solid phase part of the soil, is one of the main sources of plant nutrition, can promote the growth and development of plants, improve the physical properties of the soil, promote the activities of microorganisms and soil organisms, promote the decomposition of nutrients in the soil, improve the role of fertility and buffering of the soil. It is closely related to the structural, aeration, infiltration and adsorption properties and buffering properties of the soil. Usually, the content of organic matter is positively correlated with the level of soil fertility within a certain content range under the same or similar other conditions.

Soil organic matter content is one of the important signs to test soil fertility, and organic fertilizer can improve the organic matter content of soil.