1, seedling raising. The aquaculture pond is mainly a cement pond with an area of 20-40m2 and a water depth of 0.6-0.8m.. You can also choose a pond with good water quality near the water source and build drainage and escape prevention facilities. Strictly disinfect the pond before releasing the seedlings, apply basic fertilizer to cultivate plankton and provide open bait. The area of transplanted aquatic plants accounts for 30% of water surface. Put 0.8cm juvenile shrimp 10- 15000 per mu. In the early stage, natural bait was given priority to, soybean milk and minced fish were properly fed, and artificial feed was given priority to with individual growth.

2. Pond culture. Put 65,438+0-65,438+0.5 million young shrimps per mu, sprinkle quicklime regularly to increase the calcium content in the water, and increase the feeding amount at night, mainly with compound feed.

3. Rice planting. Choose fields with good water quality, no pollution sources around, strong water retention, convenient irrigation and drainage, and no flooding to raise shrimp in rice fields. Dig a shrimp culture ditch along the inside of the rice field ridge, with a width of 1.5m and a depth of1m. If the site area is large, dig a trench in the middle of the site with a width of1m. The width of the ridge is more than 3 meters, and the height of the ridge is 1 meter. At a distance of 0/m from the ridge/kloc-0, a pile with a height of 1 .5 m is drilled every 3 meters, which is erected with bamboo, and there are melons, beans and gourds. Planted on the edge of the ridge. After the vines are put on the shelves, they will play the role of shading the sun and cooling off the heat in hot summer. Aquatic plants, such as Sophora alopecuroides, Haematococcus verticillata, Ceratophyllum japonicum and other submerged plants, should be transplanted in shrimp ditches and ridges, and the coverage of aquatic plants should be 30%, especially scattered and scattered, which is beneficial to the smooth flow of water in shrimp ditches. Build an escape wall around the site with plastic film, cement board, asbestos tile or calcium plastic board to prevent crayfish from escaping.

4. Stock trading. Crayfish should be stocked with clear water, and shrimp can only be released after water testing is safe. There are two ways to raise crayfish: First, in the first ten days of September after rice harvest, the shrimps are directly put into the rice fields and allowed to breed by themselves. According to the actual situation of rice field culture, generally, 20 kilograms of crayfish with individuals over 40 grams are cultured per mu, and the sex ratio is 3: 1. 2. After the rice seedlings are planted in May, put 2-4 cm young shrimps1500-2,000 or 30 kg/mu. When stocking crayfish, attention should be paid to the quality of young shrimps, and the stocking specifications in the same field should be as neat as possible, and all crayfish should be stocked at one time. In sunny mornings or rainy days, the young shrimps are disinfected with 3% ~ 4% saline bath after stocking 10 minute.