1, the water source requires fresh water quality, sufficient dissolved oxygen and no pollution. It is better to use loamy clay. The width of the bank is more than 3 meters, the slope is1:2.5-3 meters, the water depth is 0.8 ~1.5 meters, and the PH value is 7.5 ~ 8.5. The pond area should not be too large, and it is generally 3 ~ 8 mu, rectangular and east-west. When new water is injected into the pond, it should be filtered with 20-40 mesh gauze to prevent wild fish and fish eggs from entering the pond with the water flow. According to the pattern of high irrigation and low drainage, the drainage channel is built to ensure that irrigation can be carried in and discharged.

2. The pond cleaning and disinfection can effectively kill enemy organisms (catfish, loach, snakehead, snake, rat, etc.), wild miscellaneous fish (carp, crucian carp, etc.) and pathogens in the pond. Quicklime and bleaching powder can be used, which is economical, affordable and safe. The specific operation method is:

(1) quick lime disinfection. Dry disinfection: 70kg of quicklime is used per mu, and the water is splashed all over the pool. If possible, it will be hugged with a rake. After a week of drying in the pond, fresh water will be injected. Disinfection with water: Each mu of water surface is calculated according to the water depth 1 m, dissolved in water with quicklime 130 kg, and evenly sprinkled throughout the pool.

(2) bleaching powder disinfection. After the bleaching powder containing 30% available chlorine is completely dissolved, the whole pool is evenly sprinkled, and the dosage is 25 kg per mu.

3. Aquatic plants play an important role in lobster culture. The first aquatic plants can make up for the lack of lobster bait and supplement a lot of vitamins; Secondly, it can prevent wind and waves, absorb some harmful substances in water, purify water quality and balance water environment; Third, it can provide hidden and roosting places for young shrimps and shelled shrimps, and reduce bullying by the strong. Generally, the planting area of aquatic plants accounts for half of the total pond area. Variety selection: low-stem reed, POTAMOGETON crispus, Sophora alopecuroides, Ceratophyllum japonicum, wild corner, Zizania latifolia, yellow grass, POTAMOGETON malayi, Elodea nuttallii and so on. If possible, you can also put some empty cans, bamboo tubes, tree roots and other wastes at the bottom of the water body, which are the favorite habitats for crayfish.

4. When the lobsters are stocked in the shrimp pond, appropriate amount of organic fertilizer is applied to cultivate bait organisms, which can directly provide natural bait for the shrimps after entering the pond. 400 kg/mu of fermented organic fertilizer is selected to maintain the corresponding fertility of the pool water. In the process of feeding, with the gradual deepening of the water level, it is necessary to topdressing the decomposed organic fertilizer, and the choice of quantity and time depends on the fat and thinness of the water, generally not exceeding 80 kg at a time. The transparency of the pool water is kept at about 35 cm.

5. The release of lobster fry is divided into spring release and autumn release. Requirements specification neat, complete appendages, no disease, no injury, a foot. Wash with 5% salt water bath for 5- 10 minutes before stocking to kill parasites and pathogenic bacteria. The purchased shrimps should be soaked in the pond water for 1 min when they enter tang qian, and then soaked for 1 min for 2-3 minutes. This is repeated for 2-3 times, so that the surface and gill cavity of the shrimps can absorb enough water before stocking, which can improve the survival rate.

6. Putting cultured shrimps in spring: 5,000-6,000 young shrimps with a body length of 3-5 cm are put in mid-March; Parenting shrimps in autumn: 500 artificially selected lobster parent shrimps are put into each mu around September, with the male-female ratio of 3∶ 1.

7. Lobster is omnivorous, and animal feed, plant feed and various artificial feeds should be used together at different stages. Animal feed mainly includes small fish pieces, dried fish meal, snail meat and various animal offal; Plant feed mainly includes rapeseed cake, soybean meal, bran, wheat, corn, pumpkin, various vegetables and flood weeds.

Extended data:

Life habits:

Lobster has strong adaptability. According to the investigation, it can survive in lakes, rivers, ponds, canals and paddy fields, even in some water bodies where fish are difficult to survive. Lobster has a strong adaptability to dissolved oxygen in water. It can not only climb ashore in an oxygen-deficient environment, but also lie on its side on the water with the help of floating plants or aquatic plants in the water and breathe through its gills to survive.

Lobster has a strong tolerance to hypoxia, and it can climb ashore for gill breathing to survive in an anoxic environment. The pH value of water quality is in the range of 5.8 ~ 9, and it can still survive normally when the dissolved oxygen is lower than1.5 mg/L. Normal growth requires dissolved oxygen above 3 ml/L.

Lobsters have a strong tendency to flow, like new water and living water, go upstream against the current, and like to live in groups. In aquaculture ponds, groups often gather around the water inlet. In rainy days, the shrimp can stay or escape on the shore for a short time against the current, and it will climb up to the shore to live when the water environment is not suitable, so the breeding ground should have fence facilities to prevent escape.

References:

Baidu encyclopedia-lobster