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A simple move to determine the environment at the bottom of the lobster pond
Publish Time：
2021-12-06
The bottom environment of the lobster pond is a "factory" that provides dissolved oxygen, microorganisms, and other nutrients necessary for the normal growth and development of crayfish. These conditions in the bottom environment of the lobster pond interact and constrain each other. The quality of the bottom environment directly affects the growth of crayfish. The yield and quality of crayfish raised in a normal bottom environment differ greatly from those in an abnormal bottom environment. However, we are not sure whether the bottom environment of the pond is normal or abnormal. Generally, people think of improving the bottom environment frequently to prevent problems from arising. But now there are various bottom improvement products on the market. If we choose bottom improvement products that kill bacteria and algae, the burden on the lobster pond will be heavier under certain conditions! Below is an introduction to the method of "looking at the roots to understand the bottom". I believe that after reading it, you will have a rough judgment by going to your own lobster pond for on-site observation.
Breeding crayfish requires planting aquatic plants to provide safe molting and daily living for crayfish. During the growth process of aquatic plants, the root system of aquatic plants will change with the changes in the environment at the bottom of the lobster pond. As the saying goes, white roots are strong, yellow roots are alive, black roots are sick, and gray roots are deadly. Many people don't quite understand the meaning of this sentence, so today I will take you to understand the relationship between the color of the grass root system and the environment at the bottom of the lobster pond.
1、 White roots are powerful, crayfish are playful
Some aquatic plants look clear and watery, and when you pick up a handful, you can vaguely smell the fragrance of the soil. The white roots, like tender lotus roots, are strong and powerful. White roots are usually the tip of new or old roots. These roots have a strong ability to secrete oxygen, which can oxidize the surrounding sediment and form an oxidation ring, causing soluble divalent iron around them to oxidize into trivalent iron precipitates, preventing them from accumulating on the surface of the roots and maintaining their white color. This indicates that the environment at the bottom of the pond is excellent, and crayfish enjoy growing and thriving in it.
2、 Huang Gen saves his life, crayfish watch the show
Yellow roots generally appear on the surface of old roots and the base of roots. These roots age due to insufficient oxidation and nutrition, causing thickening of the cell wall in the outer layer and deposition of trivalent iron on the roots, forming a yellow brown iron film. This layer of iron film has a protective effect, which can prevent toxic substances from entering the interior of the water grass roots. Therefore, from this yellow root, it can be judged that the dissolved oxygen in the bottom environment is insufficient, and bacteria and viruses have not yet formed a significant invasion on the bottom, which poses a certain hidden danger to the growth of crayfish.
3、 Hagen is sick, crayfish are sick
Due to insufficient oxygen in the bottom environment of the pond, there is a high amount of divalent iron. At the same time, organic matter in the sediment undergoes anaerobic decomposition, producing a series of toxic substances such as hydrogen sulfide. When hydrogen sulfide combines with divalent iron, it forms ferrous sulfide (black) and precipitates on the surface of the roots of aquatic plants, turning them black. This root physiological function further declines, so the color of the roots of this aquatic plant indicates that there are a large number of toxic and harmful substances in the bottom environment, which pose a serious threat to the health of crayfish!
4、 Gray roots are deadly, crayfish lose their lives
I grabbed a handful of aquatic plants and found that their roots were in the shape of gray water stains, accompanied by a smell of rotten eggs. This is due to the lack of iron at the bottom of the pond, which prevents the elimination of hydrogen sulfide and inhibits the respiration and absorption functions of the roots, leading to root death. So, from the grey roots, it can be inferred that the bottom environment has severely deteriorated, which can lead to direct poisoning and death of crayfish.
Isn't this method very simple? However, if you want to fully and accurately understand the environment at the bottom of the pond, you still need to combine observing the activity of crayfish more, which can add a bit of accurate confidence to your judgment. This method is really practical!
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