Muddy seedlings cultivating new technology

First, pond conditions. The area of ​​ponds for cultivation of loach seedlings should not be large. It is generally 30 meters long, 10-15 meters wide and 1.2-1.5 meters deep, with a slope ratio of 1:3 and a bottom sediment thickness of no more than 15 centimeters.

Second, clear pond disinfection. Keep 10-15 cm deep in the pool water 10 days before planting, and splash the whole pool with 150-200 kg of lime per acre, including pool slope. After 2 days in the clear pond, it was filtered and filled with water about 50 centimeters deep. Muddy seedlings were used to pull empty nets in the first two days before the next pond to check for predator organisms.

Third, the cultivation of feed organisms. After water injection, 200-300 kg of organic manure was fermented per mu. The muddy seedlings are 3-4 days ahead of the pond and splashed with soy milk to cultivate natural feed organisms. On average, 2.5 kilograms of soybeans are ground into the soybean milk per acre.

Fourth, seedling stocking. (1) Restocking time: After the muddy seedlings are hatched, the lower ponds can be collected after the yellow seedlings (4-5 days) in the human-circulating road pool. Choose sunny days 9-10am or 4-5pm. Purchase muddy seedlings to carefully observe the seed quality, poor quality can not be stocked. In the same cultivation pond, the muddy seedlings hatched in the same batch should be placed so as not to affect the survival rate and the out-of-pool specification. (2) Transport, stocking methods and stocking densities. Muddy seedlings are made by adding a proper amount of fresh water to a special nylon bag. Each bag contains 100,000 tails and is transported with oxygen. When the seedlings are released, the water temperature in the cultivation tank and the nylon bag shall be measured firstly. When the water temperature differs by more than 2°C, the seedlings cannot be released, otherwise death will be caused. Put the nylon bag into the cultivation pond water, and after about 20 minutes, the loach seedlings will adapt to the water temperature of the cultivation pond, and choose the place where the leeward sun is sunny and there is no muddy water. Slowly put the loach seedlings into the cultivation pond by the poolside. Conditions can also be used to "eat food" pond method, that is, muddy seedlings before the lower pond to take measures to feed. Generally, 500-600,000 mud loach seedlings are planted per acre.

Fifth, feeding feed. After the muddy seedlings descended from the pond, the soybean milk was splashed four times a day, respectively, at 9:00, 11:30, and 2:00, 4.30. To Quanchiposa, including the corner of the cultivation pool. Soybean milk is freshly ground and fed with 1 kilogram of soybeans and 10-12 kilograms of soybean milk milled with water. Every day, 4 kilograms of soyabean milled soymilk are fed on a per acre basis, and water quality is appropriately increased or decreased after 5 days. Soybean milk was fed for about 15 days, and the fish with a protein content of about 35% was ground into a powdered feed with full-priced pellets.

Sixth, daily management. Each day, we observed the lakes in the early, middle, and evening times three times to observe the changes in the water color and the activities of the muddy seedlings and clear the enemy. Pay close attention to the occurrence of bubble disease in the afternoon and immediately add water after the discovery. Early use of drugs to prevent trichodiasis. During the whole cultivation period, the water depth is maintained at 50-80 cm, and the water is discharged once every 7-10 days, each time is 10-15 cm, and each kilogram is flooded with 1 kilogram of photosynthetic bacteria. The transparency of the pool water is maintained at 20-25 cm, and the water quality is appropriately applied. Organic Fertilizer.

Seven, fishing. The most frequent muddy activities in the evening are the main fishing time. The 4-8 cm long muddy seedlings are to be grounded with a 9-mesh polyethylene net cloth, and the length of the net should be more than 1 meter wide. At the end of the harvest, half of the water in the pool is drained, and fresh water is added to stimulate fishing. The mud loach that has been collected is strictly screened and put into the holding tank for sale.

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