In the structural adjustment of the fishery industry, it is a simple and easy method to increase the main breeding area of ​​grass carp and the proportion of polyculture. This can reduce production costs and increase economic efficiency. The grass carp "bamboo shoots" breeding techniques are described below. 1. Summer flower stocking. 1 is generally around mid-June. When stocking out-of-focus bags of summer flowers, they must first be put into the pond for 10 to 15 minutes, and then open the bag and put the fish to increase the survival rate of the stocking. 2 Generally, about 6,000 to 10,000 tails of summer flower are planted per acre. 3 Restocking should be enough at one time, try not to make it up. 4 feed feeding. When the fish is 3 to 10 cm in length, duckweed is the dominant species, with a small amount of three-folded surface composed of bean cake, bran, and corn (5:3:2), and grasses such as alfalfa, alfalfa grass and reeds are fed over 10 cm. Class, and with a certain amount of grain feed. Usually two times a day, that is, 9 to 10 am, 3 to 4 pm. From July to August, you can feed 1 time. 5 water quality regulation. In the early days of the grass carp, it is generally kept at a depth of about 50 centimeters to facilitate warming of the shallow water and fertilize the water; when it grows to 8 centimeters, it maintains a depth of about 70 centimeters; when it grows to 10 centimeters, it maintains a depth of about 90 centimeters; At 11.5 cm, maintain a water depth of about 1.2 meters; when it grows to more than 13 cm, maintain a water depth of 1.5 meters or more. 2. Adult fish breeding. 1 The pond where the grass-raising fish is mainly raised, the silt does not exceed 20 cm, and the water depth of the pond is kept more than 2 meters. 2 Grass carp species must be of uniform specifications, robust physique, specifications at 100 g/tail, and other collocations of species no larger than grass carp. 3 The amount of grass carp should be about 60% of the total amount. Better conditions of the pond, per acre can be put grass carp 500 to 550, with 300 perch, 70 perch, 80 per carp (or 150 to 200 per carp), but also with the appropriate combination of head carp. 4 to feed grass or all kinds of aquatic plants. In addition, all kinds of weeds and vegetables, beans, melons, corn, stems and leaves are good feed for grass carp. In addition, at about 4 pm every day, fish should be fed with 1.5% of the weight of pond fish to supplement nutrients and domesticate for centralized feeding.
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