Functions of Organic Fertilizer

1. Organic fertilizer can improve the soil and balance the acid and alkali.
The acidity and alkalinity of soil is often measured by pH. The reason why soil is acidic and alkaline is that 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; otherwise it is alkaline; when the two are equal, the soil is neutral. Most of the soil pH in my country is in the range of 4.5 to 8.5, and the pH value increases from south to north, forming a situation of "acid in the south and alkali in the north". Due to the difference in climate between the north and south of my country, the south is humid and rainy, and the soil is mostly acidic, while the north is dry and rainless, and the soil is mostly alkaline. If the soil is too (too) acidic or too (too) alkaline, it will reduce the effectiveness of soil nutrients to varying degrees, making it difficult to form a good soil structure, seriously inhibiting the activity of soil microorganisms, and affecting the growth and development of various crops.
2. Contains various nutrients.
Organic fertilizer is not only rich in organic matter and organic acids, such as humic acid, amino acids, and fulvic acid, but also contains various large, medium, and trace elements. Although the content is low, it is relatively comprehensive. Generally speaking, nitrogen grows leaves, phosphorus grows flowers, and potassium grows fruits; silicon protects roots, calcium protects fruits, magnesium protects leaves, and sulfur protects flavor; iron prevents yellow leaves, copper prevents fallen leaves, molybdenum prevents flower leaves, and zinc prevents small leaves. Boron prevents leaf curling.
3. It has long-term effect.
Real organic fertilizer must not be dissolved or melted, because organic fertilizer contains a large amount of cellulose and lignin that cannot be dissolved by water. It must be decomposed by microbial bacteria in the soil and converted into amino acids and carbohydrates before it can be dissolved. Fruit tree roots absorb, which is a slow and long-lasting process.