Recently, some readers have sent messages: In the past, crayfish were raised in a paddy field, and it was still good to raise. Now I would like to continue farming crayfish in this paddy field. What kind of aquatic plants can be planted with this species? What is the appropriate amount of crayfish seedlings per mu for nesting crayfish? What feed is best?
Raising lobsters in the pond is an efficient mode of production. This model can make full use of the various resources in Zhangtang, improve the productivity of Qiantang, and achieve a double harvest of shrimp and alfalfa, which has the advantages of less investment, less risk, and high efficiency.
In addition to the cultivation of crayfish in Putian, crayfish can also be cultivated in aquatic vegetable fields such as cress and white rice.
When crayfish were cultured in cress fields, the production mode of “crayfish-cress rotation†was selected. This model can be cultivated for two annual years, that is, raising lobster in the first half of the year and planting cress in the second half of the year. In March each year, 10,000 to 12,000 crayfish seedlings with a size of 1 to 3 centimeters per acre are placed, 150 to 200 kilograms of crayfish can be produced per mu, and cress is planted in the second half of the year. Annual mu gross profit 5000-7000 yuan.
It is also possible to nest crayfish in Kushiro. The Jinhu County Fishery Technology Promotion Center in Tuhu Town, Jinhu County has experimented with 60 mu of farmland for polyculture of clams and crayfish, and has achieved good economic returns with an input-output ratio of 1-4. Select a landfill with convenient injection and drainage, fresh water and no pollution, and excavate the ring ditch around the field block, with a depth of 1 meter and a width of 3 to 4 meters. The center should appropriately excavate shallow ditch and be field-shaped. Cockroaches are transplanted in mid-April, with a spacing of 1 to 1.2 meters and a plant spacing of 0.5 to 0.8 meters, 800 to 1,000 plants per acre. In the 10 days before the transplanting, the young larvae with 2 to 3 cm of larvae are stocked with 0.5 to 10,000 larvae per acre. The larvae should be placed in shallow water and water hyacinths to allow them to climb into the pond. Before the shrimp species are released, they should be bathed with 3% to 5% salt water for 5 minutes to prevent shrimp disease. At the same time, 20 to 30 kilograms of snails are placed per acre, and 1.0 to 2.5 kilograms of feed per acre. In late May, you can catch Daxiao Xiao Xiao listed. Crayfish feed is mainly fed with special compound feeds.
In addition, crayfish can also be cultivated in rice fields. It is worth noting that when polyculture or nesting of crayfish in aquatic plants, biological pests should be used as far as possible to prevent the use of pesticides. If you use a hand sprayer, you must use a nozzle with a 7-micron orifice, and spray the medicine in the upper middle of the plant to reduce the amount of liquid that falls into the water. Spraying should be carried out after the dew is dry on the sunny day. If the application is improper and the concentration of pesticides is too high, “running horse water†should be quickly filled to ease the injury.
Raising lobsters in the pond is an efficient mode of production. This model can make full use of the various resources in Zhangtang, improve the productivity of Qiantang, and achieve a double harvest of shrimp and alfalfa, which has the advantages of less investment, less risk, and high efficiency.
In addition to the cultivation of crayfish in Putian, crayfish can also be cultivated in aquatic vegetable fields such as cress and white rice.
When crayfish were cultured in cress fields, the production mode of “crayfish-cress rotation†was selected. This model can be cultivated for two annual years, that is, raising lobster in the first half of the year and planting cress in the second half of the year. In March each year, 10,000 to 12,000 crayfish seedlings with a size of 1 to 3 centimeters per acre are placed, 150 to 200 kilograms of crayfish can be produced per mu, and cress is planted in the second half of the year. Annual mu gross profit 5000-7000 yuan.
It is also possible to nest crayfish in Kushiro. The Jinhu County Fishery Technology Promotion Center in Tuhu Town, Jinhu County has experimented with 60 mu of farmland for polyculture of clams and crayfish, and has achieved good economic returns with an input-output ratio of 1-4. Select a landfill with convenient injection and drainage, fresh water and no pollution, and excavate the ring ditch around the field block, with a depth of 1 meter and a width of 3 to 4 meters. The center should appropriately excavate shallow ditch and be field-shaped. Cockroaches are transplanted in mid-April, with a spacing of 1 to 1.2 meters and a plant spacing of 0.5 to 0.8 meters, 800 to 1,000 plants per acre. In the 10 days before the transplanting, the young larvae with 2 to 3 cm of larvae are stocked with 0.5 to 10,000 larvae per acre. The larvae should be placed in shallow water and water hyacinths to allow them to climb into the pond. Before the shrimp species are released, they should be bathed with 3% to 5% salt water for 5 minutes to prevent shrimp disease. At the same time, 20 to 30 kilograms of snails are placed per acre, and 1.0 to 2.5 kilograms of feed per acre. In late May, you can catch Daxiao Xiao Xiao listed. Crayfish feed is mainly fed with special compound feeds.
In addition, crayfish can also be cultivated in rice fields. It is worth noting that when polyculture or nesting of crayfish in aquatic plants, biological pests should be used as far as possible to prevent the use of pesticides. If you use a hand sprayer, you must use a nozzle with a 7-micron orifice, and spray the medicine in the upper middle of the plant to reduce the amount of liquid that falls into the water. Spraying should be carried out after the dew is dry on the sunny day. If the application is improper and the concentration of pesticides is too high, “running horse water†should be quickly filled to ease the injury.
IV Solutions for Antitumor and Chemotherapy Antiemetic
Iv Solutions For Antitumor And Chemotherapy Antiemetic,Tropisetron Hydrochloride Injection,Ondansetron Hydrochloride Injection,Granisetron Hydrochloride Injection
Shandong Qidu Pharmaceutical Co., Ltd. , https://www.qdyypharma.com