CATDOLL : CATDOLL: Is it good to give the crab pond a fertilizer bath before the rain?

1. Is it good to fertilize the crab pond before the rain?

Hello friend, it is also very good to use Qianpei hydroponics. In general, we use fertilizer and water cultivation.

2. What is the best fertilizer for crab farming? Thank you

The most important thing for crab farming is water plants. The industry generally says that good grass makes crabs fat. Plant water plants with good palatability at the bottom of the pond, such as duckweed and elodea, build fences around the pond with film to prevent crabs from escaping, and feed a certain amount of wild fish and small fish regularly. The initial cost is generally around 2,000 yuan per mu.

3. Why do crab ponds need to be fertilized in aquaculture?

Fertilizer water is the foundation for crab farming. Only when the pond water quality is well-established and the water quality does not age prematurely and algae accumulate, will it not affect the growth and health of crabs. I hope this helps you.

4. How to use urea in crab farming fertilizer and water and how much to use

The amount of fertilization for crab breeding ponds should be determined according to the water quality. Urea is generally used as the main fertilizer when the water quality is relatively thin, about 5-10 catties per mu, and some phosphorus fertilizer is added, about 2 catties per mu. When the water quality is moderate, phosphorus fertilizer is generally used as the main fertilizer, generally 1-2 catties per mu. When the weather is hot, it is not recommended to use urea or ammonium carbonate.

Advantages: Nutrients are released quickly in the water body, reaching very high concentrations in a short time, and the water is fertilized quickly.

Disadvantages: First, if the nutrient concentration is too high in a short period of time, it is easy to cause excessive reproduction of algae in the water body and water concentration. Second, if the nutrients cannot be quickly absorbed by the algae, it is easy to cause the increase of ammonia nitrogen and nitrite in the water body. Third, the nutrient composition is single and the fertilizer effect lasts for a short time. Fourth, improper fertilization is easy to cause the massive reproduction of cyanobacteria, naked dinoflagellates, etc.