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Bioslag culture muddy four main points
It is advisable to build a breeding pond with 50-100 square meters and a depth of 0.7-1 meter in Dianchi Lake. The wall of the pool must be steep and compacted. It is best to use triads or cement. Barbed wire is installed at the inlet and outlet to prevent muddy escape and wild fish invasion. The bottom of the pond is covered with 20-30 cm thick residue of biogas and mixed mud, and a small part of the slope is provided with a small earth package. Plants can be planted on the soil package as the basic feed and activity site for the loach. At the bottom of the drainage hole, dig a fish pit 30-40 cm deep and 5% of the size of the rearing pond to allow the mud to swim and catch. After the Dianchi Lake is built, it shall be disinfected with fresh lime ponds. After the medicinal properties have disappeared, the inflow water will be put into the loach seedlings. Mud breeding (1) Natural spawning. Select a small spawning pond and inject fresh water after proper cleaning. According to every cubic meter of water, use 100 grams of quick lime slurry in Quanchiposa. After the drug disappears, press the ratio of male to female ratio 1:2. When the water temperature reaches 15°C or more, use brown chips, willow roots, and water grass to form a fish nest. Disperse into the pond, make the loach spawn on the fish nest, and take it out and transfer it to the hatching pond for hatching. In order to grasp the time of estrus in females, it is also possible to capture them for artificial insemination. Generally, about 500,000 eggs can be hatched per cubic meter of water. (2) artificial hatching. The water intensity of the muddy hatching pond is to be able to turn the muddy eggs. The eggs of the muddy eggs can hatch from the membrane at the appropriate water temperature (20-28°C) for 1-2 days. Seedlings to cultivate newly hatched loach seedlings must be cultivated in a special pool. The depth of the pond is 30-50 cm, and about 800 tails per square meter. If the water is used for cultivation, the stocking density of loach seedlings can be increased to 2,000 tails per square meter. Feed egg yolk, fish meal, rice bran, etc. Each day thereafter, compound feed and biogas slurry are fed at 2-5% of the total weight of the loach seedlings. Biogas slurry can be directly devoured by loach seedlings, and plankton can be cultivated to supplement live feeds. After the biogas slurry is injected, plankton can multiply and the pond water is light green or dark brown. Ponds used for biogas slurry should be inspected frequently. If the dissolved oxygen in the water body is low, oxygenation measures should be taken in time. During August-September, the water temperature increased, and the loach grows quickly and consumes large amounts of food. The transparency of the general pond water body is not less than 20 cm. If the transparency of the water body is too low, the water should be changed in time to improve the pond water environment. The quail cultured quail pond is about 50 cm deep, and the stocking density is 100 g/m2. The wheat bran, rice bran, rice, rapeseed cake flour, corn flour, biogas residue, and biogas slurry are fed. Feeding rate on feed day was 1% in March, 4% in April-June, 10% in July-August, and 4% in September-October. No feed was given from November to February of the following year. Biogas slag and biogas slurry can be exchanged and put in small quantities, depending on the change in water quality. Immediately after the completion of biogas fertilizer, it is not appropriate to release water (except that the dissolved oxygen in the water body is too low), otherwise it is not conducive to the direct ingestion of plankton and the growth of plankton. During the summer season, we must put a awning above the raising pond (preferably planting grapes, loofah, etc.), and regularly add new water. During the winter season, we can put biogas residue in the corners of the rearing pond to provide thermal insulation for the loach.