Technical points of soilless Culture of Loach in cement Pond

one。 The use of old cement pond culture must first carry out disinfection. After the construction of the new cement pool, the alkali must be removed, the cement pool must be filled with water and soaked for 10 days, and the water should be changed every two days, or be dealkalized with drugs.

Second, transplanting aquatic plants is the key to soilless aquaculture. Water hyacinth or water peanut is selected, which accounts for 2/3 of the cement pool. It is disinfected with 20ppm potassium permanganate solution and put in.

Third, the use of organic fertilizer to cultivate water quality, to provide natural bait for Loach, the dosage is 1000 jin per mu, packed with snakeskin bag in the distribution pond.

Fourth, Misgurnus anguillicaudatus seedlings were soaked in 3-4% salt water for 5 minutes before entering the pond to kill bacteria and parasites. The stocking density of Loach seedlings is 80 eggs per square meter, and the stocking specification is 5 ~ 8 eggs per tail. The temperature difference of entering water is not more than 3 ℃ ~ 5 ℃.

5. Misgurnus anguillicaudatus seedlings were fed for 3 days after entering the pond, and an adaptive process was given to it. The feeding amount was 5%-8% of the body weight of Loach, from less to more, and gradually increased. Feeding should be timed, fixed, and quantified. Feed once in the morning, in the middle and in the evening, and it is appropriate to finish the feed within 2 hours after feeding.

Change water in time and disinfect regularly. When the transparency of the water body drops to more than 20 cm, it should be drained and irrigated in time. Disinfect regularly with bleach, etc. Sprinkle EM bacteria once every half month to regulate the water quality.

7. Disease prevention and control. In the process of Misgurnus anguillicaudatus culture, attention should be paid to the prevention and control of diseases, such as red fin disease, water mildew disease, air bubble disease, curved bone disease, rotifer disease, tongue cup disease, pesticide poisoning and other biological pests.

Eighth, timely start to catch the market, catch the big and stay the small. Generally, you can catch Loach after National Day. At this time, Loach individuals grow to 5Mel 7 times as much as when throwing seedlings, and the ratio of feed to meat is the most suitable. It can also be determined according to the local market situation. When catching, leave the smaller Loach for sale in the coming year.

9. Do a good job of overwintering and heat preservation. It is necessary to maintain a certain water level in the cement pool in winter, break the ice and maintain the dissolved oxygen content of the water body every day when freezing, and plastic greenhouses can be built to ensure that Loach seedlings and Loach species survive the winter safely.