Chelate water soluble fertilizer products using common chelating agents, such as EDTA and EDDHA, which kind of chelated fertilizer products in the prevention of soil is not easy to be fixed, can be well absorbed by plants, first of all, to understand the different chelate state Fertilizers are different for crop utilization.
Different chelated fertilizers for different absorption and utilization of crops

When the soil pH is between 5 and 7, the most commonly used chelator EDTA can best maintain nutrient chelation.
When the soil pH exceeds 7.5, EDDHA is usually used.
Amino acids and citrates are best in acidic pH 7 soils, but are not effective chelators in the soil.
What is chelating water soluble fertilizer?

Chelating state refers to the organic matter if it has a salt-forming group (where there are active hydrogen atoms can be replaced) and a network of complex groups (complex reaction of the ligand), and metal cations, in addition to Salt effect, there are forming role. The cyclic complex thus formed is called a chelate state. For example, an EDTA molecule has the ability to completely encapsulate micronutrients. Other smaller chelators require two or three molecules (such as amino acids) to encapsulate micronutrients. There are now more developed new chelating agents: ammonium polyphosphate chelating technology.
What are the common chelating agents that have adverse effects on soil health?

Some common chelating agents such as EDTA and EDDHA do not decompose rapidly in the soil. So far, only a few known bacterial strains can break down these chelating agents. Most of them usually pass through the soil profile before decomposition, leading to long-term environmental problems.
How to choose the right chelate water soluble fertilizer?

Most of the soil in the country is rich in phosphorus, inorganic salts easily with phosphate, sulfate, organic matter reaction, the formation of insoluble material. In order not to reduce fertilizer efficiency, we use ammonium polyphosphate chelating technology, ammonium polyphosphate has a strong chelating effect in the soil is not easy to be fixed, can be well absorbed by plants. The first use of ammonium polyphosphate water soluble fertilizer began in the United States, gradually expanded to the United Kingdom, Belgium, France, Germany, Japan, applied in cucumber, tomato and other crop production, yield effect is very significant.
Why is the effect of polyphosphate chelation?

1. The first factor affecting the yield of crops is the long-term large amount of application of phosphate fertilizer, phosphate ions and soil calcium, magnesium and other cations in the soil to form a poorly soluble phosphate, destruction of soil aggregate structure, resulting in soil root damage, The absorption of nutrients. If the use of ammonium polyphosphate water soluble fertilizer, it will avoid with the soil phosphate, sulfate, organic matter and other reactions, to the crop of strong roots, but also contribute to the absorption of nutrients. Especially for the continuous lack of sun and low temperature of the crop roots and lateral roots of the growth has a strong role in promoting.

    
2 to promote flower bud differentiation Paul flower fruit, in the vegetative growth stage can promote the growth of buds, so that plants grow more 60-70% of the buds and flowers. In the bloom period can improve the use of 50% -60% of the pollination efficiency, increase buds and fruit set and protect the young fruit does not fall.

3. Effectively improve the absorption rate, ammonium polyphosphate has a strong chelating effect, can make nitrogen and phosphorus and a variety of trace elements chelate, not easily with the soil solution of calcium, magnesium, iron, aluminum and other ions and phosphate failure The Ammonium polyphosphate also has the role of chelating metal ions, such as zinc, manganese and other trace elements to improve the activity. In the use of trace elements than ordinary drip fertilizer 5-10 times. This is the use of ammonium polyphosphate water soluble fertilizer often requires a small amount, can be a significant increase in yield.