1, pond treatment: the water depth should be controlled at 1.5-2m. Before stocking, 75- 100kg of quicklime slurry should be used in each acre of pond, and then 150-250kg of organic fertilizer should be applied to each acre of pond to fertilize water. 2. Stocking: in late April, when the water temperature is above 18℃, stock 1500-2000 fish fry per mu of pond with specifications of 4-5cm. 3 1, feeding: the daily feeding amount in early stage is 8- 10% of body weight.

First, California bass culture technology

1, pond treatment

(1) The pond area is 2-3 mu, and the water depth is controlled around 1.5-2m, with less requirements for bottom silt.

(2) Before stocking the fry, 75- 100kg of quicklime slurry is used for the whole pond per mu to clean the pond. After cleaning the pond, apply 150-250kg organic fertilizer per mu of pond to fertilize water.

2. Stocking

(1) In late April, when the water temperature is kept above 18℃, stocking will be carried out.

(2) Summer flower fry with the size of 4-5cm is suitable for stocking fry, and the size gap between fry should not be too large. Before stocking, take a medicinal bath with salt water for about 5 minutes.

(3) Put1500-2,000 fry in each mu of pond, and at the same time, put a small amount of carp, crucian carp and silver carp.

3. Feeding

(1) At the initial stage of feeding, fresh bait is mainly fed, mainly domestic fish seedlings, water worms, red worms, etc., and it is fed three times a day (in the morning, at noon and at night), and the daily feeding amount is about 8- 10% of the fish weight.

(2) With the continuous growth of fish, gradually switch to fresh animal feed or artificial compound feed, and feed it twice a day (from 8: 30 to 9: 00 in the morning and from 4: 00 to 5: 00 in the afternoon). The daily feeding amount is about 3-5% of the fish weight, and it is appropriate to eat it within 1.5-2 hours. Common bass feed: eel feed, or mixed feed prepared according to the ratio of fish meal 60%, No.4 powder and yeast powder 40%, or mixed fish pulp and proper amount of peanut bran and corn flour.

4. Management

(1) California bass has high requirements for dissolved oxygen in water, so it needs to be equipped with an aerator. When the oxygen in the pond is insufficient, or the weather is sultry, thunder and rain, it needs to be started in time to aerate.

(2) After two months' feeding, the California bass will be raised in different grades to avoid the phenomenon of the law of the jungle.

(3) When the pond water body is too fat and the water quality deteriorates, quicklime should be sprinkled in time to improve the water quality.

(4) In winter and summer, raise the water level in the pond to ensure that the water temperature is appropriate.

Second, California bass culture density

1, if the pond is single-cultured, put 1000-2000 bass with the size of 8- 10cm per mu of pond. In case of single culture in cement pond (with an area of 50- 100 square meter), put 20-30 bass per square meter. In case of cage culture (area:16-50m2), put 20-30 perch with 5-6cm size per square meter.

2. In the case of polyculture, medium and low-yield adult fish ponds under 500kg are usually selected for polyculture, and the wild miscellaneous fish in the polyculture ponds are used as food for bass, and 200-500 bass with specifications of 3-5cm are put into each mu. If the bait fish is supplemented artificially, the stocking amount can be increased appropriately.