Pond conditions. Freshwater lobsters like the water environment with fresh water and rich dissolved oxygen, so they should choose a place with sufficient water, no pollution source and convenient water injection and drainage. The area should be 2,000-3,300 square meters, and the bottom should be sandy or hard soil, and there should not be too much silt. The bottom of the pool should have submerged plants with an area of not less than 1/5. Good water inlet and drainage facilities should be installed in the pond, and net covers should be set at the water inlet and outlet to prevent escape and enemy harm. Aquatic plants, such as aquatic plants such as water hyacinth and water hyacinth, are kept around the pond, covering an area of about13 of the water surface, and sufficient hidden objects, such as artificial nests, stones and tiles, are arranged at the bottom of the pond for shrimp to inhabit. The area is about 1/5 of the pond area.

2. Shrimp fry stocking. The pond must be disinfected. In addition to sprinkling quicklime, the enemies in the pond, such as catfish, loach, snakes and rats, should be thoroughly removed. The stocking time of shrimp seedlings should be from March to May, and it should be carried out in sunny morning or evening. The shrimp seedlings are 2-4 cm in size and the density is 800-1000 per mu.

3. Feeding bait. The shrimp has a wide diet, and likes to eat small miscellaneous fish, snails and soybeans, as well as shrimp compound feed. Within 3 days after the seedlings are released, minced small miscellaneous fish and minced meat are mainly put in, and small miscellaneous fish, leftovers or artificial compound feed are put in the following 1 month; When it grows to 6-7 cm, all crushed snails, mussels and appropriate plant bait can be fed. Feed 1 time every morning and evening, and the feeding amount accounts for about 4%-7% of the body weight, and the specific feeding amount should be increased or decreased according to the feeding situation. Most of the feeding takes place at dusk and night, and the feeding amount at night accounts for more than 70% of the whole day.

4. Daily management. The water quality of the pond should always be fresh. Generally, the water should be changed every week15-20 cm deep, and there is enough dissolved oxygen. Check frequently at ordinary times, patrol the pond frequently, and remove the moss in the pond in time; Always check the filter screens at the inlet and outlet, and pay attention to the various activities and feeding of shrimp, and pay attention to the prevention and elimination of enemies.

5. Disease control. Since the shrimp was introduced into China, no outbreak or epidemic disease has been found, but when the breeding density is high, attention should be paid to disease prevention and control. One is brown spot disease. The crustacean of diseased shrimp has spotted black-brown ulcer, which often lies by the pool and is in a state of dying. The prevention and control methods are mainly to keep the water quality in the shrimp pond good, change the water regularly or put in quicklime, and dredge the pond every year; Be careful in the process of fishing, transportation and stocking to prevent damage to shrimp shells; When the disease is found, 1 mg/kg furacilin can be used for treatment, and at the same time,10-15 mg/kg tea meal liquid can be used for splashing to promote shrimp molting and repair damaged crustaceans. The second is black gill disease. The disease is mainly caused by water pollution and mold infection. Its symptom is that the gills change from red to brown or light brown until they become lambs completely, causing gill atrophy. The control method is: kill with 2-3 mg/kg furazolidone or bleaching powder, or sprinkle with 2 mg/kg malachite green or methyl blue in the whole pool. The third is ciliary disease. The disease is mainly caused by ciliates, such as Syngnathus, Bellworm, attached to the body surface, appendages, eyes and gills of shrimp. When it is serious, it can make lobsters fidgety and swim around the pool frequently, which hinders feeding, molting and growth. It can even cause lobster to die of hypoxia and suffocation. Generally, fresh water can be injected to keep the pool water clean. For treatment, the diseased lobster can be soaked in 0.40 mg/kg copper sulfate solution for 5-6 hours, and each course of treatment lasts for 3-5 days.

6. Capture. Freshwater lobsters can be harvested in the same year10-11month. One-time fishing can be carried out in the evening by dry pond or purse seine, and net fishing can be adopted if it is to be listed in stages and batches.