The application of humic acid sodium in aquatic products is not particularly extensive. There are also many platforms and seminars on this material, but there are still many functions worth developing and using. At present, the technology is not particularly mature. Application of humic acid sodium If we want to understand the application of a substance, we must first understand its characteristics, including its physical and chemical properties. So let's analyze it. 1. Classification of humic acid sodium: At present, we see powder, sheet, ball and broken types on the market, and they are slightly different in color, precipitation speed and residue touch.
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.
Sodium humate refers to the comprehensive product of humic acid and sodium alkali, so the main difference between humic acid and sodium humate * lies in their acidity and alkalinity. Humic acid is acidic, while sodium humate is alkaline and more soluble in water than the former. The common coal raw materials of sodium humate are lignite and weathered coal, because they are high in content and rich in nutrients. Lignite is generally brown or brownish black, weathered coal is generally black, the total content of humic acid is between 30% - 70%, chemically active lignite, but it is easy to flocculate when the electrolyte content in water is high.
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.
Technical quality index ()
Appearance: black bright color, amorphous solid particles
Particle size: 20-120 mesh
Water soluble humic acid content (dry basis) ≥ 70%
Water insoluble matter (dry basis) ≤ 12%
Moisture content ≤ 15%
Fe content ≤ 0.45%
PH value 8-9
The package is plastic woven bag lined with film, with a net weight of 25kg/bag.
Effects of humic acid and potassium fertilizer on quality changes of agricultural products.
Compared with other fertilizers, the application of humic acid potassium fertilizer can increase the starch content of potato by more than 10%, 12-19%, and the vitamin content of tomato by 654.8%, 20-35%, which is convenient for long-term storage and free of fertilizer pollution.
Fruit test results.
Effects of humic acid and potassium fertilizer on quality changes of agricultural products.
Effect of sugar content of Hami melon: Applying potassium humate can increase the sugar content of Hami melon by 8-15%.
Effects on sugar content and vitamin C content of watermelon: After applying potassium humate, sugar content and vitamin C content of watermelon increased by 13-31.3% and 3-42.6% respectively. In the soil with poor fertility, the sugar content of potassium humate organic fertilizer was 16-31% higher than that of chemical fertilizer, and the vitamin C was 13.4-63.6% higher.
