1. the urea fertilizer water fish culture fertilization method

urea fertilizer water method is very simple, once a week, each time five kilograms can be applied, it is best to use with compound fertilizer, to avoid some adverse effects of a single fertilizer. The main purpose of fertilization is to promote the growth of plankton, which is not only beneficial to water quality, but also provides certain food for fish, especially for filter-feeding fish such as silver carp and bighead carp.

Silver carp: Silver carp, also known as silver carp, is one of the four major domestic fish in China, and is also a typical filter-feeding fish. Its temperament is impatient, good at jumping, nutritious, is very suitable for breeding excellent fish species, is also the main freshwater aquaculture fish, distributed in major water systems, not only grows fast, but also is not easy to get sick, the yield is also very high.

2, bighead carp: bighead carp, also known as silver carp or fat head fish, is a common freshwater fish, also known as the scavenger in the water. Its appearance is similar to silver carp, but its eyes are lower. It is distributed in many waters and mainly inhabits the middle and upper layers of the water body. As a characteristic fish in China, it has high economic value.

3. Carp: Carp is not a filter-feeding fish, but its feeding habits are more miscellaneous, it can also eat plankton, and it grows fast, does not require high temperature, and is very easy to raise. It is worth mentioning that it lives at the bottom of the water, so it can be intercropped with other fish.