This year, I have no experience in raising carp. What problems should we pay attention to when cultivating carp?

There are many problems that need to be paid attention to in the process of carp culture. If you don't pay attention, it is easy to cause losses to your own production. Here I will introduce some problems that should be paid attention to in the process of carp culture.

The optimum pH value of carp growth environment is 6.3 ~ 8.4. The optimum water temperature for growth is 5-32℃, the optimum dissolved oxygen concentration is 4 mg/L, and the optimum water temperature is above 35℃ or below 8℃. The sexual maturity age of carp is 2 years old. The incubation temperature is 20-22℃, and carp can breed and lay eggs at 65438 04℃. Most carp ponds have a water depth of more than 2m and are equipped with 2-3 oxygen generators with working power exceeding 4KW. The silt should not be too deep, and 10 ~ 20cm is the best.

First, the preparation before breeding

Remove excess sludge, expose it to 10 ~ 20 days, and lay quicklime slurry and steel bars around it, which can effectively remove harmful gases and loose sludge; Next, one week before stocking, the pool water was treated with amino acids, and the water color was stabilized with fertilizer and Bacillus.

The stocking time is 65438+ 10 or early June 165438+ 10. You can choose 1 year-old carp fry with strong body, full scale, bright color and neat specifications, and the stocking amount is 27,000 /hm2. In addition, in order to disinfect the free-range seedlings, soak them in 5% saline for about 10 minute.

Second, scientific feeding.

There are several principles for fry to enter the pond: 1. Domesticate a small amount of open space. The second is to adhere to the "three looks", that is, the activities of watching water color, weather and fish. The third is to adhere to the principle of "four decisions" and eat less and more meals, that is, timing, quality, quantity and positioning. The feeding amount is directly proportional to the fish weight, and the feeding amount is 2% ~ 5% of the fish weight. Feeding frequency depends on water temperature: once in the morning and once in the afternoon, with water temperature16 ~19℃; When the water temperature rises to 20 ~ 22℃, twice in the morning and twice in the afternoon; When the water temperature rises to 23 ~ 29℃, twice in the morning and twice in the afternoon; When the water temperature rises to 30 ~ 32℃, once in the morning and once in the evening. Adhere to a small number of times, using manual or automatic feeder to feed, the time is controlled in 30 ~ 50 minutes.

Third, the daily management

Patrol the pool 2 ~ 3 times a day, carefully observe the fish situation and water quality changes in the pool, and turn on the oxygen generator in hot and rainy days to prevent flooding. The function of aeration is to increase dissolved oxygen in the pond. When it is higher than 4 mg/L and lower than 2 mg/L, the fry will appear abnormal phenomena or soak or float. Generally, it is necessary to start the oxygen generator at noon on a hot sunny day; On rainy days, oxygen needs to be turned on in the morning and at midnight. In case of bad weather or floating head, start the oxygen generator to extend the start-up time. Especially in ponds with a water depth of more than 2m, stratification will occur at high temperature, and the lower water body will be seriously deprived of oxygen.

The above are the problems that need to be paid attention to in the process of carp culture for your reference and study, and I hope it will help you.