First, grass carp fry culture technology
1. Select a pond.
(1) Choose rivers, streams or reservoirs with abundant water resources, fresh water quality, high dissolved oxygen and no pollution, and configure corresponding facilities.
(2) Generally, the pond area is 1-3 mu, which is an east-west rectangle.
Step 2 put in fried food
(1) reasonably control the density, and put 800- 1000 tails per mu, with a specification of about 3-4 cm.
(2) You can't put too many fry at a time, which is easy to cause fry to kill each other.
Step 3 feed scientifically
(65,438+0) Feeding artificial feed such as soybean milk, 65,438+0 times in the morning and afternoon respectively, gradually increased with the growth of fry.
Bait quantity.
(2) In the process of grass carp culture, it is necessary to carry out fertilizer and water cultivation to breed a large number of natural bait.
4. Preventive measures
(1) Choose weather with suitable temperature, usually in sunny morning.
(2) In summer, attention should be paid to prevent the fry from anoxia and flooding. Once the fish is found to be floating, the aerator should be turned on immediately to avoid the death of grass seedlings.
2. How many fry can golden grass carp grow in a year?
1, grass carp fry can grow 2 Jin a year.
2, fish farming first raises water to ensure the purity and vitality of water. There is too much mud at the bottom of the pond, so you can take out the mud at the bottom and dry it for a while and disinfect it thoroughly.
3. Grass carp culture needs a lot of algae, and a lot of beneficial bacteria, such as Bacillus subtilis, can be put in the pond.
4, grass carp before stocking, need to be vaccinated with blood-heat vaccine.
5. Choose fish species that are disease-free, have the same body color, have no ulcers, scabs or spots on the skin, have intact fins, have no deformity, are flexible in activities and are not easy to be hooked.
6, fixed-point, quality, quantitative feeding of fresh feed, do not change the feed frequently.