Sodium humate is the sodium salt of humic acid, which is widely used in medicine and industry.
In crayfish farming, sodium humate mainly plays the following roles:
A. Shading to control the growth of moss.
Many crayfish farmers did not pay attention to fertilizing and watering the rice after harvesting the rice, which caused the moss to grow and spread in the rice fields. In order to control the outbreak of moss, sodium humate is often used for shading to control the growth and spread of moss.
B. Decontaminate the aquatic plants.
Sodium humate has strong flocculating properties, which can flocculate impurities in the water to make the water more refreshing, thereby reducing the water purification load of aquatic plants and achieving the effect of removing sewage plants.
C. Water detoxification.
Humic acid has a strong effect of complexing heavy metals. Sodium humate enters the water body and loses sodium ions and becomes humic acid. It complexes and precipitates some heavy metals that may be harmful to crayfish, which plays a role in understanding the poison of the water body.
In addition, studies have shown that sodium humate has the function of stimulating the growth of aquatic plants, and the aquatic plants will grow faster after using sodium humate.
Although sodium humate has many advantages in the cultivation of crayfish, we still need to pay attention to the amount and frequency of use in the use: generally use sodium humate once to adjust the color of the water body for about three days, and use it continuously for two to three times. It has the effect of preventing and controlling moss and removing dirt from aquatic plants. The dosage of sodium humate should be controlled at a water depth of 50 cm and 2 kg per mu of water surface. Too high frequency will have a negative impact on aquatic plants: due to the long-term lack of photosynthesis, aquatic plants will stop growing or even die.
The above is the method and some experience of using sodium humate in the process of breeding crayfish for many years. If it is not correct, please let the breeding masters give us your advice.