Who is contracting the farm under the dam of Niuweiling Reservoir? Breeding there, okay?

The water quality is good and there are many aquaculture projects. Pond conditions: the area is 5- 10 mu, the water depth is 1.6- 1.8 m, and there is little silt at the bottom of the pond. Every 3 mu of pond is equipped with 1 aerator, which is rich in fresh natural water and the ratio of pond to foundation is 5:2.

Fish culture: Reasonable density and multiple varieties and specifications are important measures to achieve high yield and make full use of feed. The four major fish are cultivated in 1 year. The first crop will be released from Qingming, and 320 grass carp can be released per mu, of which 120 will weigh about 1 kg each, which will be raised to about 3 kg when they leave the pond in August, and the remaining 200 will weigh about150g each, and will be raised to 3,000 in Qingming next year. 30 bighead carp can be put in each crop, and each tail weighs about 1 kg, which has a fast growth rate and can weigh 3 kg when coming out of the pond. In general, the profits of grass carp and bighead carp can offset the costs, while other fish cultured at the same time are the key to the profits of aquaculture. 700 shad with 50 grams per mu can be released, and 350-400 grams can be raised to 1 year; Each crucian carp weighing 150g can be put into 130 and raised 1 year. Each carp weighing 10g can be put in 10 per mu, 1 year can be raised 1.5-2 kg/tail; A 50-gram snakehead can be put into 10, 1.3 kg per mu and can be raised 1 year.

Feed selection. Must choose high-grade grass carp feed, so that fish grow fast, low cost, good water quality.

Feeding. Feed 2-3% pond fish in March-May, 3-4% pond fish in10/65438+1October, and 3-4% pond fish in June-September, twice a day, at 9: 00 am and 4: 00 pm. If possible, it is best to use a bait feeder to feed the bait, so that the bait is evenly fed and it is not easy to pollute the pool water. According to the weather, water color and fish eating, the feeding amount can be flexibly controlled. Because the compound feed for fish is expensive at present, if a certain amount of elephant grass or ryegrass is fed in four fish ponds where grass carp is mainly raised, the meat quality of grass carp can be effectively improved at a lower cost. Therefore, it is necessary to have a certain area of pond foundation to grow green feed. After feeding in the morning, feed green feed, and feed 0.5kg fish with 300-350g green feed every day. Feed some wheat to the bottom shad. Don't feed it too late in the afternoon or when the weather changes suddenly, otherwise the fish will easily float their heads due to lack of oxygen at night. The aerator should be started early when the fish has a floating head according to the weather change, and it should be started at noon on sunny days in summer 1-2 hours, which can break the temperature difference between the upper and lower water layers and increase the dissolved oxygen in the water. In this way, the fish in the pond can drift less at night, reduce the occurrence of fish in the pond and reduce the breeding cost.