1, Pond culture: Crayfish are cultured in ponds with sufficient water source, good water quality and convenient irrigation and drainage, and drainage and escape prevention facilities are built. Early juvenile shrimps are mainly natural bait, and with the growth of individuals, artificial feed should be the main one.

2. Paddy field culture: Choose fields with good water quality, abundant water, no pollution, convenient irrigation and drainage, and free from flooding to raise shrimp in paddy field, and feed mainly snails, earthworms, mixed fish, animal livers, vegetable leaves, soybean meal and pumpkin leaves.

3. Lotus field culture: Similar to rice field culture, shrimp seedlings are generally put in from the end of June to the beginning of August.

I. Pond culture

1, pond conditions

Choose a pond with sufficient water, good water quality and convenient irrigation and drainage. It is best to have a contiguous pond with a water depth of 0.8-1.2m.. Build drainage and escape prevention facilities, and surround them with asbestos tiles or calcium plastic plates to prevent crayfish from escaping. A large round mound can be built in the pond for crayfish to dig holes, feed and inhabit. Plant aquatic plants (Elodea nuttallii, Hydrilla verticillata, etc.) in rows in the water, apply sufficient base fertilizer, and strictly disinfect the pond before releasing seedlings.

2, stocking fry

The stocked fry can be juvenile shrimp or semi-finished shrimp. Put 30,000 young shrimps per mu, and put 1 10,000 semi-finished shrimps per mu. Disinfect with 2% salt water for 2 minutes before stocking. When stocking, test the water. Only when the water is safe can the shrimp be released. When stocking, pay attention to putting it gently to avoid injury to the shrimp species.

3. Feeding management

Early young shrimps were mainly fed with natural bait, and soybean milk and minced fish were properly fed. With the growth of individuals, they should be fed with artificial feed, and gradually fed with green feed (vegetable leaves, corn, soybean meal, pumpkin leaves, etc.) and animal bait (snails, earthworms, mixed fish, animal liver, etc.). Feeding should be timed, quantitative and fixed-point, and it can be fed at 7-9 am and 5-8 pm every day, and the feeding amount should be adjusted according to the temperature and food intake. Daily management should pay attention to patrol the pond every day, monitor the water quality, timely remove the remaining bait and sundries in the pond, keep the pond clean and prevent enemy damage.

Second, rice field culture

1, pond conditions

Choose fields with good water quality, abundant water, strong water retention, no pollution, convenient irrigation and drainage, and no flooding to raise shrimp in rice fields. Shrimp-raising ditches should be dug around the inside of the rice field ridge, and the field ditch should be dug in the middle of the field if the field area is large, and escape prevention nets should be set at the water inlet and drain, and the ridge should be strengthened and reformed. Submerged plants, such as Vallisneria angustifolia, Haematococcus verticillata and Ceratophyllum demersum, should be transplanted in the shrimp ditch and field, which is beneficial to the unimpeded flow of water in the shrimp ditch. An escape wall is built around the field with plastic film, cement board, asbestos tile or calcium plastic board to prevent crayfish from escaping.

2, stocking fry

There are two ways to raise crayfish in rice fields: one is to put the shrimps directly into the rice fields in the first ten days of September after the rice is harvested, and let them breed by themselves. According to the actual situation of rice field culture, the ratio of male to female is generally 3:1; Second, after rice seedlings are planted in May, young shrimps with the size of 2-4cm 1500-2000 are put into each mu. Note that the stocking specifications of the same field should be as uniform as possible, and the stocking should be sufficient at one time.

3. Feeding management

The feed of crayfish in rice field is mainly snails, earthworms, mixed fish, animal liver, chicken water, etc., with green feed such as vegetable leaves, soybean meal, pumpkin leaves and corn. Generally, it can be fed at 7-9 am and 5-8 pm every day. Pay attention to adjusting the water level in daily management to prevent enemy diseases.

Three, lotus field culture

1, pond conditions

Lotus cultivation is similar to paddy cultivation. Choose a lotus root field with sufficient water, strong water retention, no pollution and no flooding, dig a ring shrimp ditch with a width of 2.5m and a depth of 0.8m around the lotus root field 1.5m, and dig in the middle. ＃? Shrimp ditch, in which submerged plants such as Sophora alopecuroides, Haematococcus verticillata and Ceratophyllum are planted. The water inlet and outlet are provided with escape prevention nets, and the lotus ridge is fixed with shading nets (50cm higher than the ridge) to prevent escape.

2, stocking fry

Crayfish raised in lotus field generally choose to put in shrimp seedlings from the end of June to the beginning of August every year, which is suitable for stocking seedlings (crayfish can reproduce themselves in the future). Before stocking, it can be disinfected by 3%-4% salt water bath washing 10 minute.

3. Feeding management

Crayfish in the lotus root field don't need to be fed too much, because the lotus root field is rich in bait, just throw a proper amount of snails, miscellaneous fish and shellfish every once in a while. Attention should be paid to remove all crayfish in the lotus root field as far as possible before May every year, even if they are caught, they need to be killed with drugs to avoid affecting the germination and growth of lotus root.