Humic acid is a natural organic matter. Humic acid plays a very important role in the soil. It has positive significance in maintaining soil ecological balance, improving soil fertility, and promoting plant growth. I believe that after reading our introduction, many friends who are engaged in agricultural production will want to buy humic acid products to see if they have such obvious effects. However, please note that there are many kinds of humic acid products on the market. How to choose high-quality products and how to buy them? use? Today I will briefly explain to you how to choose high-quality humic acid fertilizer and how to use it.
How to select humic acid fertilizers
1. Look at the appearance color. Generally, active humic acid fertilizers are mostly gray-black or dark brown;
2. Look at the color of the aqueous solution. After a good humic acid fertilizer is dissolved in water, the color of the aqueous solution will appear brown or brown;
3. To see the color change after absorbing moisture, take a sip of moisture with your mouth or squeeze it in your sweaty hands. The hygroscopic active humic acid fertilizer particles will become particularly black and shiny.
4. Choose products with high humic acid content, because the higher the humic acid content, the more significant the effect is. You can check the product description or consult the manufacturer to obtain relevant information.
How to use humic acid
1. Application time of humic acid fertilizer
(1) The application effect is good after transplanting, before flowering, expansion period and color change period;
(2) Apply before the dry season, rainy season, and cold wave to enhance crop resistance;
(3) It can be applied to crops with weak growth and urgent need to restore their growth.
2. Application method of humic acid fertilizer
(1) The combination of flushing and spraying has obvious effects;
(2) Used in conjunction with inorganic fertilizers and bacterial fertilizers, it can lose weight and increase efficiency;
(3) Small amounts and multiple times, fully diluted
(4) Although humic acid is good, you should not be greedy for too much. Only by applying it according to the conditions of the crops and soil can you see obvious effects.