Sodium humate judges the quality of the product by color depth, sedimentation rate and residue feeling:
1. Color depth: Dissolve a certain amount of humic acid sodium in a certain amount of water, and judge the product content by comparing the color depth. The darker the color, the better. If the color is too dark to judge, it can be judged by secondary or tertiary dilution comparison. In addition, please note that when the concentration is high, the solution is black, and with multiple dilutions, the color of the solution will become sauce color;
2. Precipitation speed: Powdery products usually precipitate faster, while flaky products precipitate slowly. The faster the precipitation is, the larger the particles are, and the more insoluble residue may be;
3. Residue feeling: humic acid sodium can be dissolved in the cup, and then you can move and press at the bottom of the cup with your fingers. Powdery products have a sense of residue, while sheet products, even if there is precipitation, should feel smooth and free of residue.
Sodium humate is a kind of macromolecular organic weak acid sodium salt with multiple functions, which is processed from weathered coal, peat and lignite. Its structure is relatively complex. It is known that humic acid molecules contain benzene ring, fused ring and some heterocycles (such as pyrrole, furan, indole, etc.). There are bridge bonds between the aromatic rings. The aromatic ring has various functional groups, mainly carboxyl group Phenol, hydroxyl, methoxy, quinone, etc. Sodium humate, which contains more than 75% of humic acid as dry basis, is a good veterinary medicine and feed additive for the production of green milk, meat and egg food.
Function principle of sodium humate: formally speaking, sodium humate, like honeycomb briquette, is a relatively stable natural macromolecular organic matter with aromatic structure. Because of these special physiological structures, sodium humate has a complex structure, high reactivity and strong adsorption performance. Therefore, in the process of aquaculture, the effect of purifying water quality can be achieved, deodorization can be achieved, and a large number of organic suspended particles can also be adsorbed. At the same time, under the action of various enzymes, the active substances in sodium humate molecules will also release a certain amount of oxygen, which can keep the growth and reproduction of some anaerobic harmful bacteria, and can also supplement oxygen to the water body. Of course, after the application of humic acid sodium in the water body, the water body will become greasy and the transparency will be reduced, which can prevent some sunlight from reaching the bottom layer, and can play a role in preventing lichen.
The application of humic acid sodium is more common in aquatic products. Of course, there are some potential uses that we haven't developed yet. But according to the current reaction, some applications we know are basically as follows.
Fertility and water effect: the water in some aquaculture ponds is very thin, and moss is easy to grow. According to its chemical composition, we speculate that it can supplement nitrogen sources. The role of Feishui is publicized by some propaganda companies. Whether there is such a role remains to be studied.
Purifying water quality: it can purify water quality to some extent. Adding some such substances in the pond can make the very turbid pond clear, which mainly uses its adsorption and sedimentation. I will not write about other functions one by one, mainly including protecting aquatic plants, integrating some heavy metal ions, inhibiting some effects, and also having the anti-virus effect. What we often use is to improve the bottom, often used to improve the bottom.
How do they buy humic acid sodium without quality problems? This requires us to select companies or enterprises with good development in all aspects when purchasing. It's just that the scale of the company is relatively formal, so their sales products generally have no quality problems. For example, if a company has a high social and commercial reputation, it means that consumers in the market are more interested in the company's related products than in the sales price in the market. Another very important factor is that when we buy sodium humate, we must see that there is no quality problem when we buy it.
Sodium humate can also be classified into powder, sheet, irregular particle and ball according to the product form. Different forms of products are advantageous. It is generally believed that powder products are evenly dispersed, rapidly dissolved, and cheaper than other similar products; Flakiness is more durable in terms of water color mixing, and fading is slow, but the coloring depth is not as ideal as powder, which is more suitable for acting on the bottom of water body; Spherical products are easy to use, but the content is low and not easy to dissolve; Irregular particles can slightly make up for the lack of sphericity, increase the content, and are also easy to put in, but these shapes and properties will affect the product cost. Therefore, farmers can choose which kind of humic acid products they need according to their functional requirements.
There are many skills for the quality identification of humic acid on the Internet, such as observing the color after dissolving in water. Good humic acid sodium is generally dark black, which will become the color of soy sauce after multiple dilutions; Or knead a small piece of solid product and knead it under the water. The less the sense of sand, the less impurities and the higher the purity of the product.
1. Appearance: black bright color, powdery flake particles
2. Superior products
3. Water soluble humic acid content (dry basis) ≥ 75%
4. Water insoluble matter (dry basis) ≤ 5%
5. Moisture content ≤ 10%
6. Fe content ≤ 0.45%
7. PH value 9-10
8. The package is plastic woven bag lined with film, with a net weight of 25Kg/bag.
The application of potassium humate fertilizer not only has obvious yield increase effect and economic benefits, but also as an organic fertilizer, potassium humate can improve the quality of agricultural products and is an important product of green basic industry.
Impact on the quality of food crops.
Compared with inorganic fertilizer, the yield, crude protein content and starch content of rice increased by 25-33%, 6.6% and 10.5% respectively.
Applying potassium humate to wheat can increase yield by 6.8-12%, which has the advantages of less investment, quick effect, long fertilizer effect (fertilizer effect period is more than one year) and significant economic benefits. The output increase is more than 11%, and the input-output ratio is 1:40, which is effective and suitable for popularization.
The application of potassium humate in maize can promote the early maturity of maize, with an average increase of 7-9% compared with other fertilizers, and an increase of 25-40 kg per mu.
