In aquaculture, pre-use productsSodium humate, It is very important to inhibit moss in the early stage, but many customers do not know that sodium humate not only inhibits moss, but also has other important functions.

The early application of sodium humate in aquatic products came from the properties of its fertilizers, but not because of nutrients. In the past two years, it has been suggested that it can supplement water and carbon sources. From this point of view, there is some truth, because humic Sodium is the sodium salt of humic acid. Humic acid is a macromolecular organic weak acid. It is the product formed after the decomposition of plant residues. It is mainly composed of carbon, hydrogen, oxygen, nitrogen and other elements. The data shows that the composition of humic acid It is roughly 50%-60% carbon, 4%-6% hydrogen, 1.5%-6.0% nitrogen, and most of the rest is oxygen. Also, it contains less than 1% sulfur and phosphorus. So as water carbon The addition of the source is understandable.

　　1. Purify the water

Because sodium humate is a relatively stable natural macromolecular organic matter, it is connected by sparse aromatic rings and has many pores of different sizes. Because of its complex structure, many functional groups, high reactivity and strong adsorption Therefore, in practical application, the effect of purifying water quality can be achieved, and some water turbidity occurs in the later stage of cultivation. Excluding other reasons, sodium humate can be used to improve the transparency of water body.

　2, shading effect

Physical shading means that after the application of sodium humate, the water body becomes soy sauce color, which can prevent part of the sunlight from reaching the bottom layer, thus preventing moss. Crab breeding ponds are used in a relatively large amount. The duration is generally short, generally 1-3 days, and the duration of flake products is relatively long, generally more than 5 days. In actual use, the color of soy sauce can last for 14 days.

3, keep grass and grass

In the crab pond, water plants should be planted. In the process of promoting sodium humate, it will be suggested that this is a good nutrition, which can protect grass and raise grass. In the actual process, it can also achieve corresponding effects. For example, pressing sodium humate by pressing 1-2kg\/mu 1 meter deep water application, if the aquatic plants are brittle and easy to break, it can be changed after 3 days of use, the aquatic plants will be obviously tough, and at the same time, the later stage with Bacillus sprinkling can achieve a good weed removal effect!

　　4, Chelated heavy metal ions

The surface of sodium humate has great negative charge properties, so it may undergo a series of reactions with heavy metal ions in water, so it has ion exchange properties and the ability to form chelates with metal ions.

Compared with sodium humate, sodium humate has more carboxyl groups, phenolic hydroxyl groups and organic polymers combined with N- and S-, so that sodium humate not only has acidic cation exchange, but also has the characteristics of complexation and chelation. The adsorption of heavy metal ions by sodium humate is not only cation exchange, but also forms a chelation relationship, so it can absorb a large amount of metals to eliminate toxins in water.

　　5, reduce the pH value

Carbon fertilizer is an important fertilizer for stabilizing the pH of water body. It is mainly carbon fertilizer. Sodium humate is mainly carbon fertilizer. The stronger the photosynthesis of plants, the more carbon fertilizer is needed. The higher the pH, the higher the pH of the water.