How to distinguish humic acid between true and false
In recent years, become the hot concept of humic acid fertilizer agricultural market, various category and content of “black fertilizer” flooding the market, fish farmers difficult to distinguish between true and false. It is understood that, in order to achieve the purpose of black fertilizer, some enterprises add dyes, iron oxide red, flue ash, carbon powder and other materials, some enterprises directly use weathered coal, lignite. So, how do you identify the active humic acid fertilizer in a simple way?
Learn to look at these three points first:
1,Look at the color appearance, the general activity of humic acid fertilizer color is not very dark, mostly black or dark brown;
2,Look at the solution color, sample particles, water to a plastic bottle, the particles completely disintegrated, observed water solution color, the colour of the aqueous solution of humic acid fertilizer;
3,Look at the color change after moisture absorption, the general activity of humic acid fertilizer has good moisture absorption, with the mouth of two ha moisture or completely clutched in the sweaty palm, will see the activity of humic acid fertilizer particles become particularly black. Of course, farmers buy humic acid fertilizer, or should choose well-known enterprises, choose large brands.
The production of high quality active humic acid functional fertilizer must have four factors:
1,High-quality raw materials. High quality humic acid fertilizer usually selects high-grade weathered coal from Xinjiang and Inner Mongolia and Yunnan young brown coal, and makes reasonable compatibility;
2,The activation process. With the combination of ultrafine grinding and oxidative extraction, smaller molecular weight, more oxygen-containing functional groups and higher physiological activity will be obtained;
3,Chelation process. Humic acid and nitrogen, phosphorus and potassium binding reaction, but also determines the effect of humic acid fertilizer application, simple and not a mixture of humic acid and nitrogen, phosphorus and potassium chelating reaction, need precise control of online reaction pH, temperature, moisture and other key indicators in production;
4,Add dosage. The ratio of humic acid to nitrogen, phosphorus and potassium also affected the agronomic effects of humic acid fertilizer. Not the amount of humic acid as much as possible, many years of practice has proved that when the content of humic acid 2-6%, agronomic effect is more stable and more significant.
