1. Peanut bran is insoluble in water and is not easily absorbed and utilized by unicellular algae. After being deposited at the bottom of the pond, it will rot and stink, pollute the bottom material and leave hidden dangers.
2. The cost of peanut bran increases, which increases the burden.
3. Shrimp ponds fertilized with inorganic fertilizers (such as urea and calcium superphosphate) are basically not sick.
What substance is used to fertilize the water depends on the bottom material of the pond. Generally speaking, it is best to use inorganic fertilizer directly in muddy and sandy muddy ponds. It is difficult to apply water and fertilizer to ponds with sand bottom, high ponds and plastic film mulching, and the method of combining inorganic fertilizer with organic fertilizer is better.
One of the most important functions of fertilizer and water is to increase oxygen. The pond changes the color and transparency of water by fertilizing. The color and transparency of water are mainly determined by the species and quantity of phytoplankton. The more species and quantity of phytoplankton, the lower the transparency. The function of phytoplankton is to release oxygen through photosynthesis in the sun. The more phytoplankton, the more oxygen is released.