What is the prospect of mixed culture in fish ponds in 2020? How should I raise it? With cost-benefit analysis

In recent years, under the pressure of environmental protection and limited maintenance, the cages on the surface of many reservoirs and lakes have been removed successively. Under this premise, mixed culture in fish ponds can ensure maximum economic benefits. What are the prospects for mixed culture in fish ponds in 2020? How should I raise it? What are the costs and benefits of farming?

I. what is the prospect of mixed culture in fish ponds in 2020?

Grass carp culture in central and southwest China has increased year by year, grass carp prices have fallen again and again, and the profits of grass carp culture have become lower and lower. Some mariculturists have found that silver carp is also the main source of profit in mixed culture in fish ponds, which is not only an opportunity way out under the grass carp culture mode, but also the choice of conventional fish. The mixed culture mode of silver carp + crucian carp + grass carp + silver carp can effectively utilize the space of fish ponds and significantly increase the benefit of culture.

The high-density intensive culture of silver carp, making full use of the fish carrying capacity in the pond space, the culture yield will be higher and higher economic benefits can be obtained, but at the same time, the requirements of hardware and software for culture are relatively high.

Second, how to raise the mixed culture mode of fish ponds

Breeding goal: the yield of silver carp reaches 1000 jin per mu.

Farming area: in terms of 1 mu, the water depth is about 1.5-2 meters.

Stocking specifications: silver carp 0.1kg-1.5jin, crucian carp ≤ 1kg, grass carp ≤ 1jin, silver carp ≤ 0.5jin.

Stocking mode: silver carp 1 (≤ 0.5jin) 100, silver carp 2 (0.5kg-1jin) 100, silver carp 3 (1-1.5jin) 150, crucian carp 100, grass carp 50, silver carp 50, a total of 550. among them, silver carp, crucian carp, grass carp and silver carp accounted for 63.6%, 18.2%, 9.1% and 9.1%, respectively.

Stocking density: 350 silver carp / mu, 100 crucian carp / mu, 50 grass carp / mu, 50 silver carp / mu.

III. Cost-benefit analysis

1. The first month after stocking

According to the feeding rate of 1%, it is expected to feed 3.75jin × 30 days = 112.5 jin / mu in the first month; emphasis should be placed on cultivating algae with fertilizer and water in early spring, and 600jin / mu of organic manure + Sufeibao should be sprinkled in the whole pond. Silver carp can grow to 0.6-1.8 jin as soon as possible.

2. The second month of stocking

In the second month, it is expected to feed 4.5 jin × 30 days = 135 jin / mu. This month, we still use fertilizer and water to cultivate algae, using 600 jin / mu of organic manure + 1 bottle of 2-4 mu of Yushibao to sprinkle in the whole pond. Silver carp can grow to 0.72-2.16 jin as soon as possible.

3. The third month of stocking

In the third month, it is expected to feed 5.4 jin × 30 days = 162 jin / mu. As the temperature rises this month, various kinds of metabolism in the water are strengthened, pathogenic bacteria and parasites begin to multiply in large numbers, disinfection and disinfestation are carried out once with iodine treasure, and the interval is 3 days. At the same time, attention should be paid to regulating the water quality and keeping the water body fat but not old. at the same time, 600 jin of organic manure / mu + Yushibao was sprinkled in the whole pool. Silver carp can grow to 0.8-2.5 jin as soon as possible.

4. The fourth month of stocking

In the fourth month, it is expected to feed 6.46jin × 30 days = 193.8 jin / mu. At the beginning of summer this month, with the gradual advent of high temperature, blue-green algae in ponds began to multiply in large numbers. The use of Aohua water treasure can effectively alleviate the water toxins caused by the outbreak of blue-green algae, combined with live bacteria to protect and change the treasure 1 jin / mu sprinkled in the whole pond. Silver carp can grow to 1.0-3.1 jin as soon as possible, and can sell up to 2.1-3.1 jin per mu at the end of this month.

5. The fifth month of stocking

In the fifth month, it is expected to feed 3.1 jin × 30 days = 93 jin / mu. This month, the growth rate of fish is the fastest, the accumulation of feed is also more, and the water load is heavier. The purification of water quality should be emphasized. Sprinkling Wujinliangshuibao in the whole pond can effectively degrade too much organic matter in the pond. At the same time, combined with Hudibao, ammonia nitrogen and nitrite can be effectively reduced. The remaining silver carp can grow to 1.2-2.4 jin as soon as possible.

6. The sixth month of stocking

In the sixth month, it is expected to feed 3.72jin × 30 days = 111.6 jin / mu. At the same time, use Sufeibao + Feishuibao to sprinkle the whole pond. The remaining silver carp can grow to 1.49-2.98 jin as soon as possible.

7. The seventh month of stocking

In the seventh month, it is expected to feed 4.47jin × 30 days = 134.1 jin / mu. At the same time, use Aohua Yushibao + Protective bottom Bao to sprinkle the whole pond. The remaining silver carp can grow to 1.79-3.58 jin as soon as possible, and it will sell more than 1.79 jin per mu at the end of this month.

8. Eighth month of stocking

In the eighth month, it is expected to feed 1.79 jin × 30 days = 53.7 jin / mu. At the same time, the whole pond was sprinkled with Zaofengbao + Daigai 1 jin / mu. The remaining silver carp can grow to 2.1 jin as soon as possible. According to the situation of feeding and management, all the silver carp can be sold in clear ponds (up to 214 jin / mu) to obtain year-end benefit settlement.

Thus it can be seen that as long as the culture survival rate is maintained at a high level during the culture cycle, coupled with the conscientious management of the farmers, the fish pond mixed culture mode of mainly raising silver carp to achieve a yield of 1000 jin per mu is completely feasible.